US20150060042A1 - Electrical submersible pump and pump system including additively manufactured structures and method of manufacture - Google Patents
Electrical submersible pump and pump system including additively manufactured structures and method of manufacture Download PDFInfo
- Publication number
- US20150060042A1 US20150060042A1 US14/013,494 US201314013494A US2015060042A1 US 20150060042 A1 US20150060042 A1 US 20150060042A1 US 201314013494 A US201314013494 A US 201314013494A US 2015060042 A1 US2015060042 A1 US 2015060042A1
- Authority
- US
- United States
- Prior art keywords
- submersible pump
- electric submersible
- impeller
- diffuser
- metal matrix
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
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Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
- E21B43/128—Adaptation of pump systems with down-hole electric drives
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
- F04D13/10—Units comprising pumps and their driving means the pump being electrically driven for submerged use adapted for use in mining bore holes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
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- C22C1/04—Making non-ferrous alloys by powder metallurgy
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- C22C32/001—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with only oxides
- C22C32/0015—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with only oxides with only single oxides as main non-metallic constituents
- C22C32/0026—Matrix based on Ni, Co, Cr or alloys thereof
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- C—CHEMISTRY; METALLURGY
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- C22C—ALLOYS
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- C22C32/0047—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents
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- C—CHEMISTRY; METALLURGY
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- C22C33/02—Making ferrous alloys by powder metallurgy
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
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- F04D29/00—Details, component parts, or accessories
- F04D29/02—Selection of particular materials
- F04D29/026—Selection of particular materials especially adapted for liquid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
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- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/2205—Conventional flow pattern
- F04D29/2222—Construction and assembly
- F04D29/2227—Construction and assembly for special materials
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/445—Fluid-guiding means, e.g. diffusers especially adapted for liquid pumps
- F04D29/448—Fluid-guiding means, e.g. diffusers especially adapted for liquid pumps bladed diffusers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/80—Data acquisition or data processing
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- B22F2003/1057—
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C2200/00—Crystalline structure
- C22C2200/02—Amorphous
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2230/00—Manufacture
- F05D2230/30—Manufacture with deposition of material
- F05D2230/31—Layer deposition
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2300/00—Materials; Properties thereof
- F05D2300/10—Metals, alloys or intermetallic compounds
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2300/00—Materials; Properties thereof
- F05D2300/20—Oxide or non-oxide ceramics
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2300/00—Materials; Properties thereof
- F05D2300/20—Oxide or non-oxide ceramics
- F05D2300/22—Non-oxide ceramics
- F05D2300/226—Carbides
- F05D2300/2263—Carbides of tungsten, e.g. WC
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2300/00—Materials; Properties thereof
- F05D2300/60—Properties or characteristics given to material by treatment or manufacturing
- F05D2300/603—Composites; e.g. fibre-reinforced
- F05D2300/6032—Metal matrix composites [MMC]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Definitions
- the present disclosure relates to electric submersible pumps. More particularly, the present disclosure relates to electric submersible pumps configured to provide improved contaminant tolerance and resulting increase in life span of the pump and pump components.
- Electric submersible pump systems are used in a wide variety of environments, including wellbore applications for pumping production fluids, such as water or petroleum.
- Electric submersible pump systems typically include, among other components, a submersible pump that provides for the pumping of high volumes of fluid, such as for use in oil wells which produce large quantities of water, or high volume water wells and a submersible motor for operating the electric submersible pump.
- a typical electric submersible pump utilizes numerous stages of diffusers and impellers, referred to as pump stages, for pumping fluid to the surface from the well.
- the impellers are configured to rotate within the diffusers. It is known in the art to make impellers and diffusers from a cast alloy by machining operations, such as milling, turning, etc.
- tolerance to contaminants in the pumped fluid is of great concern. More particularly, tolerance to contaminants in the pumped fluid is a critical functionality that can enhance the lifespan of the electric submersible pumps. If a fluid being pumped contains a significant amount of contaminants, and more particularly entrained abrasive contaminants, such as sand, the abrasive particles will abrade and/or erode the components, and in particular the pump impellers and diffusers, and thereby shortening the life of the pump. To minimize the detrimental effects of these contaminants, recent developments have provided submersible pumps that include features to reduce material loss due to contaminants.
- One of these features includes utilizing coatings on the component substrate, such as the cast alloy, thus providing for a harder surface area that is less susceptible to damage by the impact of these contaminants.
- the inclusion of other wear resistant pump components comprised of harder material than the impeller and diffuser, may be utilized such as bearings formed of hardened material.
- inclusion of these coating and or wear resistant components is considerably more expensive than conventional pump stage components.
- an electric submersible pump including conventional pump stage components having improved tolerance to contaminants, such as sand, thus providing for an increase in the lifespan of the pump. Further, there is a need for an electric submersible pump that allows continuous operation of the electric submersible pump system for an extended period of time.
- the electric submersible pump comprising: a housing; at least one impeller disposed in the housing; and at least one diffuser disposed in the housing and configured in cooperative engagement with the at least one impeller. At least one of the at least one impeller and the at least one diffuser is configured as a monolithic additively manufactured structure comprised of a metal matrix composite.
- the electrical submersible pump system comprising: an electric submersible pump; and an electric motor configured to operate the electric submersible pump.
- the electric submersible pump comprises: a housing; at least one impeller; and at least one diffuser.
- the at least one impeller and the at least one diffuser are disposed within the housing and configured in cooperative engagement.
- the housing, the at least one impeller, and the at least one diffuser define an internal volume within the housing, said internal volume configured to receive a fluid.
- At least one of the at least one impeller and the at least one diffuser is configured as a monolithic additively manufactured structure comprised of a metal matrix composite.
- Yet another aspect of the disclosure resides a method of manufacturing an electric submersible pump.
- the method comprising: (a) forming at least one impeller disposed in a housing; and (b) forming at least one diffuser disposed in the housing and configured in cooperative engagement with the at least one impeller.
- At least one of the at least one impeller and the at least one diffuser is configured as a monolithic structure comprised of a metal matrix composite.
- At least one of steps (a) through (b) is carried out by direct metal laser sintering.
- FIG. 1 is a side view of an electric submersible pump disposed within a wellbore in accordance with one or more embodiments shown or described herein;
- FIG. 2 is a schematic sectional view of a portion of an electric submersible pump assembly in accordance with one or more embodiments shown or described herein;
- FIG. 3 is a schematic sectional view of a portion of the electric submersible pump assembly of FIG. 2 in accordance with one or more embodiments shown or described herein;
- FIG. 4 is an isometric view of an electric submersible pump diffuser in accordance with one or more embodiments shown or described herein;
- FIG. 5 is an isometric view of an electric submersible pump impeller in accordance with one or more embodiments shown or described herein;
- FIG. 6 is an enlarged view of a portion of a metal matrix composite material of an electric submersible pump component in accordance with one or more embodiments shown or described herein;
- FIG. 7 is a flowchart depicting an embodiment of an additive manufacturing method for producing the effusion plate in accordance with the present disclosure.
- embodiments of the present disclosure provide a system and method for monolithic design and manufacture of an electric submersible pump.
- the present disclosure further provides embodiments of a system and method for monolithic design and manufacture of an electric submersible pump manufactured via additive manufacturing techniques. Using such techniques, the monolithic design so produced may provide improved tolerance to contaminants.
- first,” “second,” and the like, herein do not denote any order, quantity, or importance, but rather are used to distinguish one element from another and intended for the purpose of orienting the reader as to specific components parts.
- Approximating language may be applied to modify any quantitative representation that could permissibly vary without resulting in a change in the basic function to which it is related.
- the modifier “about” used in connection with a quantity is inclusive of the stated value, and has the meaning dictated by context, (e.g., includes the degree of error associated with measurement of the particular quantity). Accordingly, a value modified by a term or terms, such as “about”, is not limited to the precise value specified. In some instances, the approximating language may correspond to the precision of an instrument for measuring the value.
- references throughout the specification to “one embodiment,” “another embodiment,” “an embodiment,” and so forth, means that a particular element (e.g., feature, structure, and/or characteristic) described in connection with the embodiment is included in at least one embodiment described herein, and may or may not be present in other embodiments.
- reference to “a particular configuration” means that a particular element (e.g., feature, structure, and/or characteristic) described in connection with the configuration is included in at least one configuration described herein, and may or may not be present in other configurations.
- inventive features may be combined in any suitable manner in the various embodiments and configurations.
- the terms “may” and “may be” indicate a possibility of an occurrence within a set of circumstances; a possession of a specified property, characteristic or function; and/or qualify another verb by expressing one or more of an ability, capability, or possibility associated with the qualified verb. Accordingly, usage of “may” and “may be” indicates that a modified term is apparently appropriate, capable, or suitable for an indicated capacity, function, or usage, while taking into account that in some circumstances the modified term may sometimes not be appropriate, capable, or suitable. For example, in some circumstances, an event or capacity can be expected, while in other circumstances the event or capacity cannot occur—this distinction is captured by the terms “may” and “may be”.
- an exemplary electric submersible pump (ESP) system 10 including portions manufactured via additive manufacturing techniques is illustrated wherein the ESP system is disposed within a wellbore 12 .
- the wellbore 12 is formed in a geological formation 14 , for example, an oilfield.
- the wellbore 12 is further lined by a casing 16 , as indicated in FIG. 1 .
- the casing 16 may be further perforated to allow a fluid to be pumped (referred to herein as “production fluid”) to flow into the casing 16 from the geological formation 14 and pumped to the surface of the wellbore 12 .
- the ESP system 10 includes an electric submersible pump 20 , an electric motor 22 configured to operate the electric submersible pump 20 , and an electric cable 24 configured to power the electric motor 22 .
- the ESP system 10 according to some embodiments of the invention is disposed within a wellbore 12 for continuous operation over an extended period of time. Accordingly, in such embodiments, the ESP system 10 and the components of the ESP system 10 may be subjected to extreme conditions such as high temperatures, high pressures, and exposure to contaminants, such as sand.
- the ESP system 10 further includes a gas separator 26 and a seal 28 .
- the ESP system 10 may further include additional components such as bellows or springs (not shown).
- the present invention provides an electric submersible pump manufactured via additive manufacturing techniques that is capable of withstanding high temperatures, high pressures, and exposure to contaminants.
- the electric submersible pump 20 according to an embodiment is a multi-stage unit with the number of stages being determined by the operating requirements. Each stage consists of a driven impeller and a diffuser manufactured via additive manufacturing techniques (described presently) which directs flow to the next stage of the pump.
- the electrical submersible pump 20 is configured as a centrifugal pump comprising one or more pump stages 30 .
- the electric submersible pump 20 is comprised of a plurality of pump stages 30 .
- Each pump stage 30 is comprised of at least one impeller 34 and at least one diffuser 36 , (as best illustrated in FIGS. 3 and 4 ) stacked on a common shaft 38 extending at least the length of the pump 20 and cooperatively engaged one with the other.
- the one or more pump stages 30 , and more particularly the at least one impeller 34 and at least one diffuser 36 are disposed within a housing 40 .
- the shaft 38 extends concentrically through the housing 40 and is rotated by the electric motor 22 , thus driving the pump 20 .
- the electric submersible pump 20 may include one or more rotating impellers 34 and one or more stationary diffusers 36 that can be assembled in either floater or compression configurations to meet performance requirements.
- each of the at least one impellers 34 is configured to rotate within a diffuser 36 during operation of the pump 20 .
- the diffuser 36 is stationarily mounted within the housing 40 . It has been found that the number of impellers 34 needed to produce a given flow rate at a given pressure is inversely proportional to impeller speed. More particularly, if the impeller speed is increased by a factor of 3, the number of impellers 34 can be reduced by the same ratio and produce the desired flow rate and pressure.
- the at least one impeller 34 and the at least one diffuser 36 define an internal volume 42 within the housing 40 , said internal volume 42 configured to receive a fluid 44 as indicated in FIG. 3 .
- the internal volume 42 is configured such that there is fluid communication between the at least one impeller 34 , the at least one diffuser 36 and the fluid 44 that the internal volume 42 may contain.
- fluid communication means that the fluid 44 passing through the electric submersible pump 20 , is in contact with the internal volume 42 of the electric submersible pump 20 , and more particularly is in contact with the at least one impeller 34 and the at least one diffuser 36 .
- the electric submersible pump 20 and the components of the electric submersible pump 20 have a geometry and configuration such that the fluid 44 when passing through the internal volume 42 is in fluid communication with the at least one impeller 34 and the at least one diffuser 36 .
- FIGS. 4 and 5 illustrate embodiments of the at least one impeller 34 and the at least one diffuser 36 formed via additive manufacturing techniques.
- each of the at least one impeller 34 and the at least one diffuser 36 are configured as a monolithic structure and comprised of a metal matrix composite 50 .
- the term “metal matrix composite” is comprised of a metal matrix having a ceramic material dispersed therein (described presently). These materials are inherently designed to be sand tolerant and highly resistant to other contaminant materials that may result in erosion, abrasion, and corrosion to the pump stage components.
- the cooperating impeller 34 and diffuser 36 are formed as a monolithic structure, and having a single solid, uniform material makeup.
- the monolithic structures may be manufactured by additive manufacturing processes, such Direct Metal Laser Melting (DMLM).
- DMLM Direct Metal Laser Melting
- additive manufacturing techniques involve applying a source of energy, such as a laser or electron beam, to deposited powder layers in order to grow a part having a particular shape and features.
- the metal matrix composite 50 is comprised of a metal matrix 52 and a ceramic material 54 .
- matrix refers to a fine-grained material in which larger materials or objects are embedded.
- metal matrix refers to a metal material or a material comprised substantially of a metal material and capable of having other materials embedded therein.
- the metal matrix 52 includes a metal in combination with a non-metal.
- the metal matrix 52 includes a material selected from the group consisting cobalt, nickel, chromium, iron, copper and combinations thereof.
- the metal matrix composite 50 includes the ceramic material 54 dispersed in the metal matrix 52 including chromium.
- the term “ceramic” as used herein refers to an inorganic, non-metallic material having high hardness, high temperature strength, good electro-thermal insulation, and high chemical stability. Further, the term “ceramic” as used herein refers to a crystalline ceramic material or an amorphous ceramic material.
- the ceramic material 54 includes a metal in combination with a non-metal. In one embodiment, the ceramic material 54 includes an oxide, a nitride, a boride, a carbide, a silicide, a silica, or a sulfide.
- the ceramic material 54 includes a material selected from the group consisting of alumina, silica, aluminum silicate, zirconium oxide, mica, glass and combinations thereof. In an embodiment, the ceramic material 54 includes tungsten carbide (WC) dispersed in the metal matrix 52 .
- WC tungsten carbide
- additive manufacturing techniques generally allow for construction of custom parts having complex geometries, curvatures, and features, such as at least one impeller 34 and the at least one diffuser 36 discussed herein. Accordingly, additive manufacturing may be used to construct portions of the submersible pump having a variety of shapes and features, such as the at least one impeller 34 and the at least one diffuser 36 .
- Additive manufacturing may be particularly useful in the construction of at least one impeller 34 and the at least one diffuser 36 for the electric submersible pump, as the at least one impeller 34 and the at least one diffuser 36 may be constructed as a monolithic structure from high-strength materials that may be difficult to machine or tool using traditional methods.
- additive manufacturing techniques provide the capability to construct complex solid objects from computer models, without difficult machining steps.
- additive manufacturing techniques involve applying a source of heat, such as a laser or electron beam, to deposited powder layers (e.g., layer after layer) in order to grow a part having a particular shape.
- the at least one impeller 34 and the at least one diffuser 36 are fabricated using an additive manufacturing process.
- an additive manufacturing process known as direct metal laser sintering (DMLS) or direct metal laser melting (DMLM) is used to manufacture the monolithic components.
- DMLS direct metal laser sintering
- DMLM direct metal laser melting
- the additive manufacturing method is not limited to the DMLS or DMLM process, but may be any known additive manufacturing process.
- This fabrication process eliminates joints that would typically be defined within the at least one impeller 34 and the at least one diffuser 36 , thus making them susceptible to contaminants.
- DMLS is an additive layer process that produces a component directly from a CAD model using a laser and a fine metal/composite powder.
- the CAD model is sliced into thin layers, and the layers are then reconstructed layer by layer, such that adjacent layers are laser fused together.
- the layer thickness is generally chosen based on a consideration of accuracy vs. speed of manufacture.
- a steel plate is typically fixed inside the DMLS machine to serve as both a support and a heat sink.
- a dispenser delivers the powder to the support plate and a coater arm or blade spreads the powder on the plate.
- the machine software controls the laser beam focus and movement so that wherever the laser beam strikes the powder, the powder forms into a solid.
- the process is repeated layer by layer until the fabrication of the component, and in this particular instance, the at least one impeller 34 or the at least one diffuser 36 is completed.
- FIG. 7 is a block diagram illustrating an embodiment of a method 60 for constructing the at least one impeller 34 and the at least one diffuser 36 using additive manufacturing techniques.
- the method 60 may be performed by an additive manufacturing system, with the acts described herein being performed by a computer.
- the method 60 includes defining a particular configuration (block 62 ).
- the configuration may be programmed into an additive manufacturing system by using a specialized or general purpose computer, for example.
- the model may be for constructing the at least one impeller 34 or the at least one diffuser 36 , wherein each component has a complex shape.
- the defined configuration may include any of the shapes and features described above.
- a powder e.g., a metal, ceramic, or composite powder
- a chamber such as a vacuum chamber. Any of a variety of materials may be used in any suitable combination, including those described in detail above.
- an energy source such as a laser or electron beam, for example, is applied to the deposited metal powder.
- the laser or electron beam melts or otherwise consolidates the powder into a layer having a cross-sectional shape 68 corresponding to the configuration defined in step 62 .
- a computer or operator may determine whether the part is incomplete or complete, in step 708 .
- steps 64 and 66 are repeated to produce layers of consolidated powder having cross-sectional shapes 68 corresponding to the defined confirmation or model until construction of the part is complete.
- the energy source is applied to melt or otherwise consolidate each newly deposited powder layer until the final product is complete and the at least one impeller 34 and/or the at least one diffuser 36 having the defined configuration is produced.
- a novel electric submersible pump system and more particularly, a novel electric submersible pump configured to provide improved contaminant tolerance and resulting increase in life span of the pump and pump components.
- a novel electric submersible pump configured to provide improved contaminant tolerance and resulting increase in life span of the pump and pump components.
- the lifespan made possible through the use of components manufactured by additive manufacturing techniques and configured as monolithic structures comprised of a metal matrix composite, as disclosed herein, is much longer and not limited by thickness of coating.
- the resulting system and pump minimize, if not eliminate, the effects of erosion, abrasion, and corrosion on component parts.
- the electric motor 22 is configured to operate a pump 20 in a borehole, or wellbore 12 , as indicated in FIG. 1 .
- the electric motor 22 is configured to operate an electric submersible pump 20 including the impeller 34 and the diffuser 36 , as indicated in FIGS. 3-5 .
- at least one of the impeller 34 and the diffuser 36 is configured as a monolithic structure, or component, comprised of the metal matrix composite 50 to allow long term operation of the at least one of the impeller 34 and the diffuser 36 in the presence of contaminants, such as sand, in the wellbore 12 .
- an ESP system 10 is provided. Referring to FIG. 1 , in one embodiment, the ESP system 10 is configured to be installed in a wellbore 12 . In one embodiment, the ESP system 10 is configured to be installed in a geological formation 14 , such as an oilfield. In some embodiments, the ESP system 10 may be capable of pumping production fluids from a wellbore 12 or an oilfield. The production fluids may include hydrocarbons (oil) and water, for example.
- the ESP system 10 is installed in a geological formation 14 , such as an oilfield, by drilling a hole or a wellbore 12 in a geological formation 14 , for example an oilfield.
- the wellbore 12 maybe vertical, and may be drilled in various directions, for example, upward or horizontal.
- the wellbore 12 is cased with a metal tubular structure referred to as the casing 16 .
- cementing between the casing 16 and the wellbore 12 may also be provided.
- the casing 16 may be perforated to connect the geological formation 14 outside of the casing 16 to the inside of the casing 16 .
- an artificial lift device such as the ESP system 10 of the present disclosure may be provided to drive downhole well fluids to the surface.
- the ESP system 10 according to some disclosed embodiments is used in oil production to provide an artificial lift to the oil to be pumped.
- An ESP system 10 may include surface components, for example, an oil platform (not shown) and sub-surface components (found in the wellbore).
- the ESP system 10 further includes surface components such as motor controller surface cables and transformers (not shown).
- the sub-surface components may include pumps, motor, seals, or cables.
- an ESP system 10 includes sub-surface components such as the electric submersible pump 20 and the electric motor 22 configured to operate the pump 20 .
- the electric motor 22 is a submersible two-pole, squirrel cage, induction electric motor.
- the electric motor 22 is a permanent magnet motor.
- the motor size may be designed to lift the desired volume of production fluids.
- the pump 22 is a multi-stage unit with the number of stages being determined by the operating requirements.
- each stage of the electric submersible pump 20 includes a driven impeller 34 and a diffuser 36 which directs flow to the next stage of the electric submersible pump 20 .
- the electric submersible pump 20 includes a first pump stage and a second pump stage.
- the electric motor 20 is further coupled to an electrical power cable 24 .
- the electrical power cable 24 is coupled to the electric motor 22 by an electrical connector.
- the electrical power cable 24 provides the power needed to power the electric motor 22 and may have different configurations and sizes depending on the application.
- the electrical power cable 24 is designed to withstand the high-temperature wellbore environment.
- the electric submersible pump 20 includes a housing 40 , the impeller 34 and the diffuser 36 , the impeller 34 and the diffuser 36 are disposed within the housing 40 , as indicated in FIG. 3 .
- the housing 40 , the impeller 34 and the diffuser 36 define the internal volume 42 within the housing 40 , said internal volume 42 containing the fluid 44 , as indicated in FIG. 3 .
- the impeller 34 and the diffuser 36 are configured as monolithic structures manufactured utilizing additive manufacturing techniques and comprised of the metal matrix composite 50 , thus enabling operation in the presence of damaging contaminants, where the system 10 is exposed to these types of conditions.
- the metal matrix composite 50 advantageously allows for the electric submersible pump 20 , and more particularly the impeller 34 and the diffuser 36 to continuously operate in environments in which contaminants are present.
Abstract
An electric submersible pump and pump system including additively manufactures structures and method of manufacture are disclosed. The pump system including the electric submersible pump and an electric motor configured to operate the electric submersible pump. The electric submersible pump including a housing, at least one impeller and at least one diffuser disposed within the housing in cooperative engagement. The housing, the at least one impeller, and the at least one diffuser defining an internal volume configured to receive a fluid. At least one of the at least one impeller and the at least one diffuser configured as a monolithic additively manufactured structure comprised of a metal matrix composite. Also provided is an electric submersible pump including an impeller and a diffuser, wherein at least one of the impeller and the diffuser is configured as a monolithic additively manufactured structure comprised of a tungsten carbide (WC) dispersed in a metal matrix.
Description
- The present disclosure relates to electric submersible pumps. More particularly, the present disclosure relates to electric submersible pumps configured to provide improved contaminant tolerance and resulting increase in life span of the pump and pump components.
- Electric submersible pump systems are used in a wide variety of environments, including wellbore applications for pumping production fluids, such as water or petroleum. Electric submersible pump systems typically include, among other components, a submersible pump that provides for the pumping of high volumes of fluid, such as for use in oil wells which produce large quantities of water, or high volume water wells and a submersible motor for operating the electric submersible pump.
- A typical electric submersible pump utilizes numerous stages of diffusers and impellers, referred to as pump stages, for pumping fluid to the surface from the well. During operation, the impellers are configured to rotate within the diffusers. It is known in the art to make impellers and diffusers from a cast alloy by machining operations, such as milling, turning, etc.
- During operation of these types of submersible pumps, tolerance to contaminants in the pumped fluid, and in particular sand, is of great concern. More particularly, tolerance to contaminants in the pumped fluid is a critical functionality that can enhance the lifespan of the electric submersible pumps. If a fluid being pumped contains a significant amount of contaminants, and more particularly entrained abrasive contaminants, such as sand, the abrasive particles will abrade and/or erode the components, and in particular the pump impellers and diffusers, and thereby shortening the life of the pump. To minimize the detrimental effects of these contaminants, recent developments have provided submersible pumps that include features to reduce material loss due to contaminants. One of these features includes utilizing coatings on the component substrate, such as the cast alloy, thus providing for a harder surface area that is less susceptible to damage by the impact of these contaminants. In addition, the inclusion of other wear resistant pump components, comprised of harder material than the impeller and diffuser, may be utilized such as bearings formed of hardened material. However, inclusion of these coating and or wear resistant components is considerably more expensive than conventional pump stage components.
- In the field of oil and gas, it is typical to remove a pump from a well for servicing periodically. If contaminants have abraded the pump components severely, the pump may potentially have to be removed earlier than the usual life. The cost for removing an electric submersible pump, including lost production time, can be quite expensive, particularly with regard to wells not easily accessible, such as offshore drilling wells.
- Accordingly, it is desired to provide for an electric submersible pump, including conventional pump stage components having improved tolerance to contaminants, such as sand, thus providing for an increase in the lifespan of the pump. Further, there is a need for an electric submersible pump that allows continuous operation of the electric submersible pump system for an extended period of time.
- These and other shortcomings of the prior art are addressed by the present disclosure, which provides an electric submersible pump, an electrical submersible pump system and a method of manufacturing an electric submersible pump.
- One aspect of the present disclosure resides in an electric submersible pump. The electric submersible pump comprising: a housing; at least one impeller disposed in the housing; and at least one diffuser disposed in the housing and configured in cooperative engagement with the at least one impeller. At least one of the at least one impeller and the at least one diffuser is configured as a monolithic additively manufactured structure comprised of a metal matrix composite.
- Another aspect of the present disclosure resides in an electrical submersible pump system. The electrical submersible pump system comprising: an electric submersible pump; and an electric motor configured to operate the electric submersible pump. The electric submersible pump comprises: a housing; at least one impeller; and at least one diffuser. The at least one impeller and the at least one diffuser are disposed within the housing and configured in cooperative engagement. The housing, the at least one impeller, and the at least one diffuser define an internal volume within the housing, said internal volume configured to receive a fluid. At least one of the at least one impeller and the at least one diffuser is configured as a monolithic additively manufactured structure comprised of a metal matrix composite.
- Yet another aspect of the disclosure resides a method of manufacturing an electric submersible pump. The method comprising: (a) forming at least one impeller disposed in a housing; and (b) forming at least one diffuser disposed in the housing and configured in cooperative engagement with the at least one impeller. At least one of the at least one impeller and the at least one diffuser is configured as a monolithic structure comprised of a metal matrix composite. At least one of steps (a) through (b) is carried out by direct metal laser sintering.
- Various refinements of the features noted above exist in relation to the various aspects of the present disclosure. Further features may also be incorporated in these various aspects as well. These refinements and additional features may exist individually or in any combination. For instance, various features discussed below in relation to one or more of the illustrated embodiments may be incorporated into any of the above-described aspects of the present disclosure alone or in any combination. Again, the brief summary presented above is intended only to familiarize the reader with certain aspects and contexts of the present disclosure without limitation to the claimed subject matter.
- These and other features, aspects, and advantages of the present disclosure will become better understood when the following detailed description is read with reference to the accompanying drawings in which like characters represent like parts throughout the drawings, wherein:
-
FIG. 1 is a side view of an electric submersible pump disposed within a wellbore in accordance with one or more embodiments shown or described herein; -
FIG. 2 is a schematic sectional view of a portion of an electric submersible pump assembly in accordance with one or more embodiments shown or described herein; -
FIG. 3 is a schematic sectional view of a portion of the electric submersible pump assembly ofFIG. 2 in accordance with one or more embodiments shown or described herein; -
FIG. 4 is an isometric view of an electric submersible pump diffuser in accordance with one or more embodiments shown or described herein; -
FIG. 5 is an isometric view of an electric submersible pump impeller in accordance with one or more embodiments shown or described herein; -
FIG. 6 is an enlarged view of a portion of a metal matrix composite material of an electric submersible pump component in accordance with one or more embodiments shown or described herein; and -
FIG. 7 is a flowchart depicting an embodiment of an additive manufacturing method for producing the effusion plate in accordance with the present disclosure. - The disclosure will be described for the purposes of illustration only in connection with certain embodiments; however, it is to be understood that other objects and advantages of the present disclosure will be made apparent by the following description of the drawings according to the disclosure. While preferred embodiments are disclosed, they are not intended to be limiting. Rather, the general principles set forth herein are considered to be merely illustrative of the scope of the present disclosure and it is to be further understood that numerous changes may be made without straying from the scope of the present disclosure.
- As described in detail below, embodiments of the present disclosure provide a system and method for monolithic design and manufacture of an electric submersible pump. The present disclosure further provides embodiments of a system and method for monolithic design and manufacture of an electric submersible pump manufactured via additive manufacturing techniques. Using such techniques, the monolithic design so produced may provide improved tolerance to contaminants.
- The terms “first,” “second,” and the like, herein do not denote any order, quantity, or importance, but rather are used to distinguish one element from another and intended for the purpose of orienting the reader as to specific components parts. Approximating language, as used herein throughout the specification and claims, may be applied to modify any quantitative representation that could permissibly vary without resulting in a change in the basic function to which it is related. The modifier “about” used in connection with a quantity is inclusive of the stated value, and has the meaning dictated by context, (e.g., includes the degree of error associated with measurement of the particular quantity). Accordingly, a value modified by a term or terms, such as “about”, is not limited to the precise value specified. In some instances, the approximating language may correspond to the precision of an instrument for measuring the value.
- In the following specification and the claims, the singular forms “a”, “an” and “the” include plural referents unless the context clearly dictates otherwise. As used herein, the term “or” is not meant to be exclusive and refers to at least one of the referenced components being present and includes instances in which a combination of the referenced components may be present, unless the context clearly dictates otherwise. In addition, in this specification, the suffix “(s)” is usually intended to include both the singular and the plural of the term that it modifies, thereby including one or more of that term (e.g., “the impeller” may include one or more impellers, unless otherwise specified). Reference throughout the specification to “one embodiment,” “another embodiment,” “an embodiment,” and so forth, means that a particular element (e.g., feature, structure, and/or characteristic) described in connection with the embodiment is included in at least one embodiment described herein, and may or may not be present in other embodiments. Similarly, reference to “a particular configuration” means that a particular element (e.g., feature, structure, and/or characteristic) described in connection with the configuration is included in at least one configuration described herein, and may or may not be present in other configurations. In addition, it is to be understood that the described inventive features may be combined in any suitable manner in the various embodiments and configurations.
- As used herein, the terms “may” and “may be” indicate a possibility of an occurrence within a set of circumstances; a possession of a specified property, characteristic or function; and/or qualify another verb by expressing one or more of an ability, capability, or possibility associated with the qualified verb. Accordingly, usage of “may” and “may be” indicates that a modified term is apparently appropriate, capable, or suitable for an indicated capacity, function, or usage, while taking into account that in some circumstances the modified term may sometimes not be appropriate, capable, or suitable. For example, in some circumstances, an event or capacity can be expected, while in other circumstances the event or capacity cannot occur—this distinction is captured by the terms “may” and “may be”.
- Referring to
FIG. 1 , an exemplary electric submersible pump (ESP)system 10 including portions manufactured via additive manufacturing techniques is illustrated wherein the ESP system is disposed within awellbore 12. In one embodiment, thewellbore 12 is formed in ageological formation 14, for example, an oilfield. Thewellbore 12 is further lined by acasing 16, as indicated inFIG. 1 . In some embodiments, thecasing 16 may be further perforated to allow a fluid to be pumped (referred to herein as “production fluid”) to flow into thecasing 16 from thegeological formation 14 and pumped to the surface of thewellbore 12. - As illustrated in
FIG. 1 , theESP system 10 includes an electricsubmersible pump 20, anelectric motor 22 configured to operate the electricsubmersible pump 20, and anelectric cable 24 configured to power theelectric motor 22. As noted earlier, theESP system 10 according to some embodiments of the invention is disposed within awellbore 12 for continuous operation over an extended period of time. Accordingly, in such embodiments, theESP system 10 and the components of theESP system 10 may be subjected to extreme conditions such as high temperatures, high pressures, and exposure to contaminants, such as sand. As further illustrated inFIG. 2 , in an embodiment, theESP system 10 further includes agas separator 26 and aseal 28. In some embodiments, theESP system 10 may further include additional components such as bellows or springs (not shown). - In an embodiment, the present invention provides an electric submersible pump manufactured via additive manufacturing techniques that is capable of withstanding high temperatures, high pressures, and exposure to contaminants. With reference to
FIGS. 2-4 , the electricsubmersible pump 20 according to an embodiment is a multi-stage unit with the number of stages being determined by the operating requirements. Each stage consists of a driven impeller and a diffuser manufactured via additive manufacturing techniques (described presently) which directs flow to the next stage of the pump. In an embodiment, the electricalsubmersible pump 20 is configured as a centrifugal pump comprising one or more pump stages 30. In the embodiment illustrated inFIG. 3 , the electricsubmersible pump 20 is comprised of a plurality of pump stages 30. Eachpump stage 30 is comprised of at least oneimpeller 34 and at least onediffuser 36, (as best illustrated inFIGS. 3 and 4 ) stacked on a common shaft 38 extending at least the length of thepump 20 and cooperatively engaged one with the other. The one or more pump stages 30, and more particularly the at least oneimpeller 34 and at least onediffuser 36 are disposed within ahousing 40. The shaft 38 extends concentrically through thehousing 40 and is rotated by theelectric motor 22, thus driving thepump 20. In an embodiment, the electricsubmersible pump 20 may include one or morerotating impellers 34 and one or morestationary diffusers 36 that can be assembled in either floater or compression configurations to meet performance requirements. - In a particular configuration, each of the at least one
impellers 34 is configured to rotate within adiffuser 36 during operation of thepump 20. Thediffuser 36 is stationarily mounted within thehousing 40. It has been found that the number ofimpellers 34 needed to produce a given flow rate at a given pressure is inversely proportional to impeller speed. More particularly, if the impeller speed is increased by a factor of 3, the number ofimpellers 34 can be reduced by the same ratio and produce the desired flow rate and pressure. In an embodiment, the at least oneimpeller 34 and the at least onediffuser 36 define aninternal volume 42 within thehousing 40, saidinternal volume 42 configured to receive a fluid 44 as indicated inFIG. 3 . - In an embodiment, the
internal volume 42 is configured such that there is fluid communication between the at least oneimpeller 34, the at least onediffuser 36 and the fluid 44 that theinternal volume 42 may contain. The term “fluid communication”, as used herein, means that the fluid 44 passing through the electricsubmersible pump 20, is in contact with theinternal volume 42 of the electricsubmersible pump 20, and more particularly is in contact with the at least oneimpeller 34 and the at least onediffuser 36. Furthermore, in an embodiment, the electricsubmersible pump 20 and the components of the electricsubmersible pump 20 have a geometry and configuration such that the fluid 44 when passing through theinternal volume 42 is in fluid communication with the at least oneimpeller 34 and the at least onediffuser 36. -
FIGS. 4 and 5 illustrate embodiments of the at least oneimpeller 34 and the at least onediffuser 36 formed via additive manufacturing techniques. As shown inFIGS. 4 and 5 , in an embodiment, each of the at least oneimpeller 34 and the at least onediffuser 36 are configured as a monolithic structure and comprised of ametal matrix composite 50. As used herein, the term “metal matrix composite” is comprised of a metal matrix having a ceramic material dispersed therein (described presently). These materials are inherently designed to be sand tolerant and highly resistant to other contaminant materials that may result in erosion, abrasion, and corrosion to the pump stage components. More specifically, as illustrated, at least one or both of the cooperatingimpeller 34 anddiffuser 36 are formed as a monolithic structure, and having a single solid, uniform material makeup. During the manufacture process, the monolithic structures may be manufactured by additive manufacturing processes, such Direct Metal Laser Melting (DMLM). In general, additive manufacturing techniques involve applying a source of energy, such as a laser or electron beam, to deposited powder layers in order to grow a part having a particular shape and features. - Referring now to
FIG. 6 , illustrated is a portion of a component according to an embodiment, and more particularly a portion of one of theimpeller 34 or thediffuser 36 comprised of ametal matrix composite 50. Themetal matrix composite 50 is comprised of ametal matrix 52 and aceramic material 54. - The term “matrix” as used herein refers to a fine-grained material in which larger materials or objects are embedded. Further the term “metal matrix” as used herein refers to a metal material or a material comprised substantially of a metal material and capable of having other materials embedded therein. In one embodiment, the
metal matrix 52 includes a metal in combination with a non-metal. In an embodiment, themetal matrix 52 includes a material selected from the group consisting cobalt, nickel, chromium, iron, copper and combinations thereof. In an embodiment, themetal matrix composite 50 includes theceramic material 54 dispersed in themetal matrix 52 including chromium. - The term “ceramic” as used herein refers to an inorganic, non-metallic material having high hardness, high temperature strength, good electro-thermal insulation, and high chemical stability. Further, the term “ceramic” as used herein refers to a crystalline ceramic material or an amorphous ceramic material. In one embodiment, the
ceramic material 54 includes a metal in combination with a non-metal. In one embodiment, theceramic material 54 includes an oxide, a nitride, a boride, a carbide, a silicide, a silica, or a sulfide. In one embodiment, theceramic material 54 includes a material selected from the group consisting of alumina, silica, aluminum silicate, zirconium oxide, mica, glass and combinations thereof. In an embodiment, theceramic material 54 includes tungsten carbide (WC) dispersed in themetal matrix 52. - As noted above, additive manufacturing techniques generally allow for construction of custom parts having complex geometries, curvatures, and features, such as at least one
impeller 34 and the at least onediffuser 36 discussed herein. Accordingly, additive manufacturing may be used to construct portions of the submersible pump having a variety of shapes and features, such as the at least oneimpeller 34 and the at least onediffuser 36. - Additive manufacturing may be particularly useful in the construction of at least one
impeller 34 and the at least onediffuser 36 for the electric submersible pump, as the at least oneimpeller 34 and the at least onediffuser 36 may be constructed as a monolithic structure from high-strength materials that may be difficult to machine or tool using traditional methods. In addition, additive manufacturing techniques provide the capability to construct complex solid objects from computer models, without difficult machining steps. In general, additive manufacturing techniques involve applying a source of heat, such as a laser or electron beam, to deposited powder layers (e.g., layer after layer) in order to grow a part having a particular shape. - In the exemplary embodiment, the at least one
impeller 34 and the at least onediffuser 36 are fabricated using an additive manufacturing process. Specifically, an additive manufacturing process known as direct metal laser sintering (DMLS) or direct metal laser melting (DMLM) is used to manufacture the monolithic components. Although the process is described herein as DMLS, one having ordinary skill in the art would understand that DMLM could also be used. Alternatively, the additive manufacturing method is not limited to the DMLS or DMLM process, but may be any known additive manufacturing process. This fabrication process eliminates joints that would typically be defined within the at least oneimpeller 34 and the at least onediffuser 36, thus making them susceptible to contaminants. Rather, DMLS is an additive layer process that produces a component directly from a CAD model using a laser and a fine metal/composite powder. - The CAD model is sliced into thin layers, and the layers are then reconstructed layer by layer, such that adjacent layers are laser fused together. The layer thickness is generally chosen based on a consideration of accuracy vs. speed of manufacture. Initially, a steel plate is typically fixed inside the DMLS machine to serve as both a support and a heat sink. A dispenser delivers the powder to the support plate and a coater arm or blade spreads the powder on the plate. The machine software controls the laser beam focus and movement so that wherever the laser beam strikes the powder, the powder forms into a solid. The process is repeated layer by layer until the fabrication of the component, and in this particular instance, the at least one
impeller 34 or the at least onediffuser 36 is completed. - It will thus be appreciated that using the DMLS method permits the monolithic design and construction of the at least one
impeller 34 and the at least onediffuser 36 that were previously not producible in a reliable or economical manner. -
FIG. 7 is a block diagram illustrating an embodiment of amethod 60 for constructing the at least oneimpeller 34 and the at least onediffuser 36 using additive manufacturing techniques. Themethod 60 may be performed by an additive manufacturing system, with the acts described herein being performed by a computer. Themethod 60 includes defining a particular configuration (block 62). The configuration may be programmed into an additive manufacturing system by using a specialized or general purpose computer, for example. In some embodiments, the model may be for constructing the at least oneimpeller 34 or the at least onediffuser 36, wherein each component has a complex shape. The defined configuration may include any of the shapes and features described above. Instep 64, a powder (e.g., a metal, ceramic, or composite powder) is deposited into a chamber, such as a vacuum chamber. Any of a variety of materials may be used in any suitable combination, including those described in detail above. Instep 66, an energy source, such a laser or electron beam, for example, is applied to the deposited metal powder. The laser or electron beam melts or otherwise consolidates the powder into a layer having across-sectional shape 68 corresponding to the configuration defined instep 62. A computer or operator may determine whether the part is incomplete or complete, in step 708. If the part is incomplete, then steps 64 and 66 are repeated to produce layers of consolidated powder havingcross-sectional shapes 68 corresponding to the defined confirmation or model until construction of the part is complete. In other words, the energy source is applied to melt or otherwise consolidate each newly deposited powder layer until the final product is complete and the at least oneimpeller 34 and/or the at least onediffuser 36 having the defined configuration is produced. - Accordingly, disclosed is a novel electric submersible pump system, and more particularly, a novel electric submersible pump configured to provide improved contaminant tolerance and resulting increase in life span of the pump and pump components. Unlike contaminant tolerant coatings applied to metal alloy components, the lifespan made possible through the use of components manufactured by additive manufacturing techniques and configured as monolithic structures comprised of a metal matrix composite, as disclosed herein, is much longer and not limited by thickness of coating. The resulting system and pump minimize, if not eliminate, the effects of erosion, abrasion, and corrosion on component parts.
- In one embodiment, the
electric motor 22 is configured to operate apump 20 in a borehole, orwellbore 12, as indicated inFIG. 1 . In one embodiment, theelectric motor 22 is configured to operate an electricsubmersible pump 20 including theimpeller 34 and thediffuser 36, as indicated inFIGS. 3-5 . In one particular embodiment, at least one of theimpeller 34 and thediffuser 36 is configured as a monolithic structure, or component, comprised of themetal matrix composite 50 to allow long term operation of the at least one of theimpeller 34 and thediffuser 36 in the presence of contaminants, such as sand, in thewellbore 12. - In one embodiment, an
ESP system 10 is provided. Referring toFIG. 1 , in one embodiment, theESP system 10 is configured to be installed in awellbore 12. In one embodiment, theESP system 10 is configured to be installed in ageological formation 14, such as an oilfield. In some embodiments, theESP system 10 may be capable of pumping production fluids from awellbore 12 or an oilfield. The production fluids may include hydrocarbons (oil) and water, for example. - In some embodiments, the
ESP system 10 is installed in ageological formation 14, such as an oilfield, by drilling a hole or awellbore 12 in ageological formation 14, for example an oilfield. Thewellbore 12 maybe vertical, and may be drilled in various directions, for example, upward or horizontal. In one embodiment, thewellbore 12 is cased with a metal tubular structure referred to as thecasing 16. In some embodiments, cementing between thecasing 16 and thewellbore 12 may also be provided. Once thecasing 16 is provided inside thewellbore 12, thecasing 16 may be perforated to connect thegeological formation 14 outside of thecasing 16 to the inside of thecasing 16. In some embodiments, an artificial lift device such as theESP system 10 of the present disclosure may be provided to drive downhole well fluids to the surface. TheESP system 10 according to some disclosed embodiments is used in oil production to provide an artificial lift to the oil to be pumped. - An
ESP system 10 may include surface components, for example, an oil platform (not shown) and sub-surface components (found in the wellbore). In one embodiment, theESP system 10 further includes surface components such as motor controller surface cables and transformers (not shown). In one embodiment, the sub-surface components may include pumps, motor, seals, or cables. - Referring again to
FIG. 1 , in one embodiment, anESP system 10 includes sub-surface components such as the electricsubmersible pump 20 and theelectric motor 22 configured to operate thepump 20. In one embodiment, theelectric motor 22 is a submersible two-pole, squirrel cage, induction electric motor. In one embodiment, theelectric motor 22 is a permanent magnet motor. The motor size may be designed to lift the desired volume of production fluids. In one embodiment, thepump 22 is a multi-stage unit with the number of stages being determined by the operating requirements. In one embodiment, each stage of the electricsubmersible pump 20 includes a drivenimpeller 34 and adiffuser 36 which directs flow to the next stage of the electricsubmersible pump 20. On one embodiment, the electricsubmersible pump 20 includes a first pump stage and a second pump stage. - In one embodiment, as indicated in
FIG. 1 , theelectric motor 20 is further coupled to anelectrical power cable 24. In one embodiment, theelectrical power cable 24 is coupled to theelectric motor 22 by an electrical connector. In some embodiments, theelectrical power cable 24 provides the power needed to power theelectric motor 22 and may have different configurations and sizes depending on the application. In some embodiments, theelectrical power cable 24 is designed to withstand the high-temperature wellbore environment. - Further, as noted earlier, in one embodiment, the electric
submersible pump 20 includes ahousing 40, theimpeller 34 and thediffuser 36, theimpeller 34 and thediffuser 36 are disposed within thehousing 40, as indicated inFIG. 3 . As noted earlier, thehousing 40, theimpeller 34 and thediffuser 36 define theinternal volume 42 within thehousing 40, saidinternal volume 42 containing the fluid 44, as indicated inFIG. 3 . - In the disclosed embodiments, the
impeller 34 and thediffuser 36 are configured as monolithic structures manufactured utilizing additive manufacturing techniques and comprised of themetal matrix composite 50, thus enabling operation in the presence of damaging contaminants, where thesystem 10 is exposed to these types of conditions. Themetal matrix composite 50 advantageously allows for the electricsubmersible pump 20, and more particularly theimpeller 34 and thediffuser 36 to continuously operate in environments in which contaminants are present. - This written description uses examples to disclose the disclosure, including the best mode, and also to enable any person skilled in the art to practice the disclosure, including making and using any devices or systems and performing any incorporated methods. The patentable scope of the disclosure is defined by the claims, and may include other examples that occur to those skilled in the art. Such other examples are intended to be within the scope of the claims if they have structural elements that do not differ from the literal language of the claims, or if they include equivalent structural elements with insubstantial differences from the literal language of the claims.
Claims (23)
1. An electric submersible pump comprising:
a housing;
at least one impeller disposed in the housing; and
at least one diffuser disposed in the housing and configured in cooperative engagement with the at least one impeller,
wherein at least one of the at least one impeller and the at least one diffuser is configured as a monolithic additively manufactured structure comprised of a metal matrix composite.
2. The electric submersible pump of claim 1 , wherein the housing, the at least one impeller, and the at least one diffuser define an internal volume within the housing, said internal volume configured to receive a fluid.
3. The electric submersible pump of claim 1 , wherein the electric submersible pump is configured as a centrifugal pump comprising one or more pump stages, wherein each of the one or more pump stages comprises an additively manufactured impeller and an additively manufactured diffuser.
4. The electric submersible pump of claim 1 , wherein the metal matrix composite comprises a ceramic material dispersed within a metal matrix.
5. The electric submersible pump of claim 3 , wherein the metal matrix comprises a material selected from the group consisting of cobalt, nickel, iron, chromium and combinations thereof.
6. The electric submersible pump of claim 3 , wherein the ceramic material comprises a crystalline ceramic material.
7. The electric submersible pump of claim 3 , wherein the ceramic material comprises an amorphous ceramic material.
8. The electric submersible pump of claim 3 , wherein the ceramic material comprises a metal in combination with a non-metal.
9. The electric submersible pump of claim 3 , wherein the ceramic material comprises at least one of an oxide, a nitride, a boride, a carbide, a silicide, a silica, or a sulfide.
10. The electric submersible pump of claim 1 , wherein the metal matrix composite comprises tungsten carbide (WC) dispersed in a metal matrix.
11. The electric submersible pump of claim 1 , wherein the metal matrix composite comprises tungsten carbide (WC) dispersed in a substantially chromium matrix.
12. An electrical submersible pump system, comprising:
an electric submersible pump; and
an electric motor configured to operate the electric submersible pump, wherein the electric submersible pump comprises:
a housing;
at least one impeller; and
at least one diffuser,
wherein the at least one impeller and the at least one diffuser are disposed within the housing and configured in cooperative engagement,
wherein the housing, the at least one impeller, and the at least one diffuser define an internal volume within the housing, said internal volume configured to receive a fluid, and
wherein at least one of the at least one impeller and the at least one diffuser is configured as a monolithic additively manufactured structure comprised of a metal matrix composite.
13. The electric submersible pump system of claim 12 , wherein the metal matrix composite comprises a ceramic material dispersed within a metal matrix.
14. The electric submersible pump system of claim 13 , wherein the metal matrix comprises a material selected from the group consisting of cobalt, nickel, iron, chromium and combinations thereof.
15. The electric submersible pump system of claim 13 , wherein the ceramic material comprises one of a crystalline ceramic material or an amorphous ceramic material.
16. The electric submersible pump system of claim 13 , wherein the ceramic material comprises at least one of an oxide, a nitride, a boride, a carbide, a silicide, a silica, or a sulfide.
17. The electric submersible pump system of claim 13 , wherein the ceramic material comprises a material selected from the group consisting of alumina, silica, aluminum silicate, zirconium oxide, mica, glass and combinations thereof.
18. The electric submersible pump system of claim 11 , wherein the metal matrix composite comprises tungsten carbide (WC) dispersed in a substantially chromium matrix.
19. A method of manufacturing an electric submersible pump comprising:
(a) forming at least one impeller disposed in a housing; and
(b) forming at least one diffuser disposed in the housing and configured in cooperative engagement with the at least one impeller,
wherein at least one of the at least one impeller and the at least one diffuser is configured as a monolithic structure comprised of a metal matrix composite, and
wherein at least one of steps (a) through (b) is carried out by direct metal laser sintering.
20. The method of claim 19 , wherein direct metal laser sintering comprises defining a configuration for the at least one impeller or the at least one diffuser, depositing a powder into a chamber, applying an energy source to the deposited powder and consolidating the powder into a cross-sectional shape corresponding to the defined configuration.
21. The method of claim 20 , wherein the powder comprises metal matrix composite powder.
22. The method of claim 20 , wherein the energy source comprises a laser or electron beam.
23. The method of claim 20 , further comprising programming the configuration into an additive manufacturing system.
Priority Applications (6)
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US14/013,494 US20150060042A1 (en) | 2013-08-29 | 2013-08-29 | Electrical submersible pump and pump system including additively manufactured structures and method of manufacture |
CA2921752A CA2921752C (en) | 2013-08-29 | 2014-08-12 | Electrical submersible pump and pump system including additively manufactured structures and method of manufacture |
DK14799063.4T DK3039297T3 (en) | 2013-08-29 | 2014-08-12 | ELECTRIC UNDERWATER PUMP AND PUMP SYSTEM INCLUDING ADDITIONALLY MANUFACTURED STRUCTURES AND PROCEDURE FOR MANUFACTURING |
EP14799063.4A EP3039297B1 (en) | 2013-08-29 | 2014-08-12 | Electrical submersible pump and pump system including additively manufactured structures and method of manufacture |
PCT/US2014/050660 WO2015031038A1 (en) | 2013-08-29 | 2014-08-12 | Electrical submersible pump and pump system including additively manufactured structures and method of manufacture |
NO15705427A NO3099688T3 (en) | 2013-08-29 | 2015-01-30 |
Applications Claiming Priority (1)
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US14/013,494 US20150060042A1 (en) | 2013-08-29 | 2013-08-29 | Electrical submersible pump and pump system including additively manufactured structures and method of manufacture |
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US14/013,494 Abandoned US20150060042A1 (en) | 2013-08-29 | 2013-08-29 | Electrical submersible pump and pump system including additively manufactured structures and method of manufacture |
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US (1) | US20150060042A1 (en) |
EP (1) | EP3039297B1 (en) |
CA (1) | CA2921752C (en) |
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Also Published As
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NO3099688T3 (en) | 2018-03-17 |
DK3039297T3 (en) | 2018-01-15 |
EP3039297B1 (en) | 2017-10-11 |
WO2015031038A1 (en) | 2015-03-05 |
EP3039297A1 (en) | 2016-07-06 |
CA2921752A1 (en) | 2015-03-05 |
CA2921752C (en) | 2021-03-09 |
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