US20150122549A1 - Hydraulic tools, drilling systems including hydraulic tools, and methods of using hydraulic tools - Google Patents
Hydraulic tools, drilling systems including hydraulic tools, and methods of using hydraulic tools Download PDFInfo
- Publication number
- US20150122549A1 US20150122549A1 US14/071,876 US201314071876A US2015122549A1 US 20150122549 A1 US20150122549 A1 US 20150122549A1 US 201314071876 A US201314071876 A US 201314071876A US 2015122549 A1 US2015122549 A1 US 2015122549A1
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- stator
- rotor
- hydraulic tool
- hydraulic
- cartridge
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Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B3/00—Rotary drilling
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/02—Fluid rotary type drives
Definitions
- Embodiments of the present disclosure relate generally to hydraulic tools, such as drilling motors and pumps, to drilling systems that include hydraulic tools, and to methods of forming and using such tools and systems.
- BHA bottom hole assembly
- the drill bit is coupled to a drive shaft of the motor, typically through an assembly configured for steering the path of the drill bit, and drilling fluid pumped through the motor (and to the drill bit) from the surface drives rotation of the drive shaft to which the drill bit is attached.
- Such hydraulic motors are commonly referred to in the drilling industry as “mud motors,” “drilling motors,” and “Moineau motors.” Such motors are referred to hereinafter as “hydraulic drilling motors.”
- Hydraulic drilling motors include a power section that contains a stator and a rotor disposed in the stator.
- the stator may include a metal housing that is lined inside with a helically contoured or lobed elastomeric material.
- the rotor is usually made from a suitable metal, such as steel, and has an outer lobed surface.
- Pressurized drilling fluid (commonly referred to as “drilling mud”) is pumped into a progressive cavity foamed between the rotor and the stator lobes. The force of the pressurized fluid pumped into and through the cavity causes the rotor to turn in a planetary-type motion.
- a suitable shaft connected to the rotor via a flexible coupling compensates for eccentric movement of the rotor.
- the shaft is coupled to a bearing assembly having a drive shaft (also referred to as a “drive sub”), which in turn rotates the drill bit through the aforementioned steering assembly.
- the motor may include a resilient portion (e.g., an elastomeric or rubber portion), typically as part of the stator, which is designed to wear.
- the elastomeric portion may be replaced after a certain amount of use, or when a selected amount of wear or damage is detected.
- a hydraulic tool includes a stator and a rotor rotatably disposed within the stator. At least one of at least an inner portion of the stator and at least an outer portion of the rotor is configured to be installed in a drill string in either of two inverted orientations along a longitudinal axis of the hydraulic tool. The rotor is configured to rotate within the stator in either of the two orientations of the stator.
- a method of using a hydraulic tool includes disposing a rotor within a cavity defined by a stator.
- the stator has a plurality of lobes having a first end disposed proximate an upper end of the hydraulic tool and a second end longitudinally opposite the first end disposed proximate a lower end of the hydraulic tool.
- the rotor has at least one lobe having a first end and a second end longitudinally opposite the first end. The first end of the at least one lobe of the rotor is disposed proximate the upper end of the hydraulic tool, and the second end of the at least one lobe of the rotor is disposed proximate the lower end of the hydraulic tool.
- the methods further include passing a fluid through the cavity defined by the stator to rotate the rotor and at least one of removing the rotor from the cavity defined by the stator and removing the stator from the hydraulic tool.
- the methods include at least one of disposing the rotor into the cavity defined by the stator such that the first end of the rotor is disposed proximate the lower end of the hydraulic tool and the second end of the rotor is disposed proximate the upper end of the hydraulic tool and securing the stator to the hydraulic tool such that the first end of the stator is proximate the lower end of the hydraulic tool and the second end of the stator is proximate the upper end of the hydraulic tool.
- a drilling system includes a fluid source, a hydraulic tool, a drive shaft operatively associated with the rotor of the hydraulic tool, and a drill bit operatively associated with the drive shaft.
- the hydraulic drilling motor includes a stator and a rotor rotatably disposed within the stator. At least one of at least an inner portion of the stator and at least an outer portion of the rotor is configured to be installed in a drill string in either of two inverted orientations along a longitudinal axis of the hydraulic tool.
- the rotor is configured to rotate within the stator in either of the two orientations of the stator when fluid is provided to the hydraulic tool from the fluid source.
- FIGS. 1A and 1B are simplified cross-sectional side views illustrating an embodiment of a hydraulic tool according to the present disclosure
- FIG. 2A is a simplified transverse cross-sectional view of a portion of the hydraulic tool shown in FIGS. 1A and 1B taken along section line A-A therein;
- FIG. 2B is a simplified transverse cross-sectional view of the rotor 11 of the hydraulic tool taken at section line A-A of FIG. 1A ;
- FIG. 3 is a simplified transverse cross-sectional view of a portion of the hydraulic tool shown in FIGS. 1A and 1B after the stator has been reversed;
- FIG. 4 a simplified transverse cross-sectional view of the rotor 11 of the hydraulic tool shown in FIGS. 1A and 1B after the rotor has been reversed;
- FIG. 5 is an additional simplified cross-sectional side view of the stator of the hydraulic tool shown in FIGS. 1A and 1B , and including adapters to connect the stator to other components;
- FIG. 6 is a simplified cross-sectional side view of the stator shown in FIG. 4 after the stator has been reversed;
- FIG. 7 is a simplified transverse cross-sectional view of a portion of a hydraulic tool having a pre-contoured stator
- FIG. 8 is a simplified cross-sectional view of a stator having a reversible cartridge, according to the present disclosure
- FIG. 9 is a simplified transverse cross-sectional view of a portion of a rotor having a core with a cylindrical cross section.
- FIG. 10 is a simplified cross-sectional view of a rotor having a reversible cartridge, according to the present disclosure.
- the present disclosure includes hydraulic tools (e.g., drilling motors, progressive cavity pumps, etc.) each having a stator and a rotor. At least a portion of the stator and/or the rotor is configured to be used in either of two orientations.
- the stator or rotor may be inverted, which may also be characterized as directionally reversed, after a first use to move fatigued or stressed portions of the stator or rotor to positions in which lower stresses are expected to be encountered and to move less-fatigued portions of the stator or rotor to higher-stress positions.
- the motor may have a longer useful life than a conventional motor having a stator and rotor each configured to be used in a single orientation.
- a hydraulic drilling motor 10 includes a power section 1 and a bearing assembly 2 .
- the power section 1 includes an elongated metal housing 4 , having a resilient material 5 therein that has a helically lobed inner surface 8 .
- the resilient material 5 is secured inside the metal housing 4 , for example, by adhesively bonding the resilient material 5 within the interior of the metal housing 4 .
- the resilient material 5 is a material that is able to return to its original shape after being pulled, stretched, or pressed.
- the resilient material 5 may include, for example, a polymer such as a fluorosilicone rubber (FVMQ, e.g., a copolymer of fluorovinyl and methyl siloxane), nitrile butadiene rubber (NBR), a fluoroelastomer (FKM, e.g., a fluorocarbon copolymer, terpolymer, pentamer, etc.), hydrogenated nitrile butadiene rubber (HNBR), fluorinated ethylene propylene (FEP), vinyl methyl polysiloxane (VMQ), carboxylated nitrile butadiene rubber (XNBR), polyacrylate acrylic rubber (ACM), a perfluoroelastomer (FFKM), ethylene propylene rubber (EPM), ethylene propylene diene monomer rubber (EPDM), or acrylic ethylene copolymer (AEM).
- FVMQ fluorosilicone rubber
- NBR nitrile
- the resilient material 5 and the metal housing 4 together form a stator 6 , which may be configured to be reversible along a longitudinal axis thereof.
- the hydraulic drilling motor 10 may be operable with at least a portion of the stator 6 in either of two longitudinally inverted orientations (i.e., two orientations longitudinally inverted from one another).
- a rotor 11 is rotatably disposed within the stator 6 and configured to rotate therein responsive to the flow of drilling fluid (e.g., a liquid or a suspension of solid particulate matter in a liquid) through the hydraulic drilling motor 10 .
- the rotor 11 may include an elongated metal core 13 having a resilient material 14 thereon that has a helically lobed outer surface 12 configured to engage with the helically lobed inner surface 8 of the stator 6 .
- the resilient material 14 may be secured over the metal core 13 , for example, by adhesively bonding the resilient material 14 over the exterior of the metal core 13 .
- the resilient material 14 may be the same material as the resilient material 5 of the stator 6 , or the resilient materials 5 , 14 may be different materials.
- a hardfacing material may be formed on a portion of the outer surface 12 of the rotor 11 .
- the hardfacing material may include chrome, nickel, cobalt, tungsten carbide, diamond, diamond-like-carbon, boron carbide, cubic boron nitride, nitrides, carbides, oxides, borides and alloys hardened by nitriding, boriding, carbonizing or any combination of these materials.
- Hardfacing may be applied pure or as a composite in a binder matrix. Hardfacing materials on rotors are described in U.S. Patent Application Publication No. 2012/0018227, published Jan. 26, 2012, and titled “Components and motors for downhole tools and methods of applying hardfacing to surfaces thereof,” the entire disclosure of which is hereby incorporated by reference.
- hardfacing materials may be disposed on surfaces of the stator 6 .
- the rotor 11 may be configured to be reversible along a longitudinal axis thereof.
- the hydraulic drilling motor 10 may be operable with at least a portion of the rotor 11 in either of two longitudinally inverted orientations (i.e., two orientations longitudinally inverted from one another).
- the inversion of the rotor 11 may be independent of the inversion of the stator 6 . That is, the rotor 11 , the stator 6 , or both may be inverted.
- the outer surface 12 of the rotor 11 and the inner surface 8 of the stator 6 may have similar, but slightly different profiles.
- the outer surface 12 of the rotor 11 may have one fewer lobe than the inner surface 8 of the stator 6 .
- the outer surface 12 of the rotor 11 and the inner surface 8 of the stator 6 may be configured so that seals are established directly between the rotor 11 and the stator 6 at discrete intervals along and circumferentially around the interface therebetween, resulting in the creation of fluid chambers or cavities 26 between the outer surface 12 of the rotor 11 and the inner surface 8 of the stator 6 .
- the cavities 26 may be filled with a pressurized drilling fluid 40 .
- the pressurized drilling fluid 40 causes the rotor 11 to rotate within the stator 6 .
- the number of lobes and the geometries of the outer surface 12 of the rotor 11 and inner surface 8 of the stator 6 may be modified to achieve desired input and output requirements and to accommodate different drilling operations.
- the rotor 11 may be coupled to a flexible shaft 50 , and the flexible shaft 50 may be connected to a drive shaft 52 in the bearing assembly 2 .
- a drill bit may be attached to the drive shaft 52 .
- the drive shaft 52 may include a threaded box 54 , and a drill bit may be provided with a threaded pin that may be engaged with the threaded box 54 of the drive shaft 52 .
- FIG. 2A is a cross-sectional view of the stator 6 and the rotor 11 of the hydraulic drilling motor 10 taken at section A-A of FIG. 1A .
- FIG. 2B is a cross-sectional view of the rotor 11 of the hydraulic drilling motor 10 taken at section line A-A of FIG. 1A .
- the inner surface of the metal housing 4 and the outer surface of the resilient material 5 may each be approximately cylindrical or tubular.
- the inner surface 8 of the stator 6 shown in FIG. 2A includes lobes 42 a - 42 f , which may be configured to interface with lobes 48 a - 48 e of the rotor 11 .
- the lobes 48 a - 48 e of the rotor 11 move into and out of the spaces between the lobes 42 a - 42 f of the stator 6 .
- portions of the stator 6 and/or the rotor 11 experience stresses.
- the stator 6 includes a resilient material 5
- the resilient material 5 may be designed to partially deform as the rotor 11 rotates.
- the rotor 11 includes a resilient material 14
- the resilient material 14 may be designed to partially deform as the rotor 11 rotates.
- the resilient materials 5 , 14 may sustain a finite amount of damage (e.g., fatigue) for each rotation of the rotor 11 .
- Any damage to the resilient materials 5 , 14 may be concentrated at portions of the resilient materials 5 , 14 subjected to highest loads, which damage may be aggravated by solids in the drilling fluid.
- forces on the resilient material 5 may be concentrated on surfaces 44 a - 44 f of the lobes 42 a - 42 f .
- the surfaces 46 a - 46 f on opposite sides of the lobes 42 a - 42 f from the surfaces 44 a - 44 f may be exposed to relatively lower stress.
- the portions of the lobes 42 a - 42 f nearest the surfaces 44 a - 44 f may sustain more damage than the portions of the lobes 42 a - 42 f nearest the surfaces 46 a - 46 f.
- FIG. 3 is a cross-sectional view of the stator 6 of the hydraulic drilling motor 10 taken at section line A-A of FIG. 1A after the stator 6 has been reversed from the orientation shown in FIG. 2A .
- the lobes 48 a - 48 e of the rotor 11 move into and out of the spaces between the lobes 42 a - 42 f of the stator 6 in the opposite order from the order corresponding to the orientation shown in FIG.
- the portions of the lobes 42 a - 42 f nearest the surfaces 46 a - 46 f may sustain more damage than the portions of the lobes 42 a - 42 f nearest the surfaces 44 a - 44 f .
- the lobes 42 a - 42 f may be symmetric, such that when the stator 6 is inverted, the lobes 42 a - 42 f of the stator 6 engage with the lobes 48 a - 48 e of the rotor 11 in the same manner as in the original non-inverted orientation.
- each of the surfaces 44 a - 44 f and the surfaces 46 a - 46 f may have identical profiles.
- FIG. 4 is a cross-sectional view of the rotor 11 of the hydraulic drilling motor 10 taken at section line A-A of FIG. 1A after the rotor 11 has been reversed from the orientation shown in FIG. 2B .
- the reversal may be independent of the reversal of the stator 6 depicted by the orientation shown in FIG. 3 .
- the surfaces 49 a - 49 e on opposite sides of the lobes 48 a - 48 e from the surfaces 47 a - 47 e may be exposed to relatively lower stress.
- the portions of the lobes 48 a - 48 e nearest the surfaces 47 a - 47 e may sustain more damage than the portions of the lobes 48 a - 48 e nearest the surfaces 49 a - 49 e .
- the lobes 48 a - 48 e may be symmetric, such that when the rotor 11 is inverted, the lobes 48 a - 48 e of the stator 6 engage with the lobes 42 a - 42 f of the stator 6 in the same manner as in the original non-inverted orientation.
- each of the surfaces 47 a - 47 e and the surfaces 49 a - 49 e may have identical profiles.
- the rotor 11 may have identical fittings at both ends.
- one or more adapters may be used to connect the rotor 11 to other parts of the hydraulic drilling motor 10 .
- the more-worn or more-damaged portions of the resilient materials 5 , 14 may be placed in positions where they are likely to be exposed to relatively lower stress, and the less-worn or less-damaged portions of the resilient materials 5 , 14 may be placed in positions where they are likely to be exposed to relatively higher stress.
- the stator 6 and/or the rotor 11 may exhibit a longer useful life, and the stator 6 and/or the rotor 11 may wear more evenly than conventional stators and rotors.
- the stator 6 and/or the rotor 11 may exhibit approximately the same useful life in its second (reversed) orientation as in its first orientation. In such embodiments, the total life of the stator 6 and/or the rotor 11 may be approximately double the life of a conventional stator or rotor having similar materials and dimensions.
- FIG. 5 is another cross-sectional view illustrating the stator 6 of the hydraulic drilling motor 10 .
- the stator 6 may include a first fitting 60 at one end of the stator 6 and a second fitting 62 at the opposite end of the stator 6 .
- the first fitting 60 and the second fitting 62 may have identical threads (e.g., the same pitch, thread density, and thread profile, both male or both female, etc.), such that either the first fitting 60 or the second fitting 62 may be attached to top 30 or the bottom 32 of the power section 1 of the hydraulic drilling motor 10 (see FIG. 1A ).
- the first fitting 60 and/or the second fitting 62 may include one or more adapters 64 to connect the stator 6 to the top 30 or the bottom 32 of the power section 1 .
- the first fitting 60 and the second fitting 62 need not have identical threads, although they may have identical threads, but the adapter(s) 64 may include appropriate threads to allow attachment to the top 30 or the bottom 32 of the power section 1 .
- the adapter(s) 64 may, respectively, include an industry-standard box connection or pin connection.
- the stator 6 may include a more-worn region 66 near the lower end of the stator 6 and a less-worn region 68 near the upper end of the stator 6 .
- the stator 6 may be reversed, such that the first fitting 60 is connected to the bottom 32 of the power section 1 , and the second fitting 62 is connected to the top 30 of the power section 1 .
- the more-worn region 66 is near the upper end of the stator 6 and a less-worn region 68 is near the lower end of the stator 6 .
- the less-worn region 68 may be exposed to relatively more stress than the more-worn region 66 when the stator 6 is operated in this orientation.
- both regions 66 , 68 may have similar amounts of wear or damage.
- the stator 6 and/or the rotor 11 may be free of the resilient materials 5 , 14 . If both the stator 6 and the rotor are free of the resilient materials 5 , 14 , the hydraulic drilling motor 10 may be referred to as a “metal-to-metal motor” because metal of the stator 6 contacts metal of the rotor 11 when the hydraulic drilling motor 10 is in operation. Metal-to-metal motors may be beneficial in some applications, such as when the hydraulic drilling motor 10 operates at temperatures above which the resilient materials 5 , 14 are stable. The stators 6 and rotors 11 disclosed herein may be used in metal-to-metal motors to increase the useful life of such motors.
- FIG. 7 illustrates a cross-sectional view of another stator 6 ′.
- the stator 6 ′ includes a metal housing 4 ′ and a resilient material 5 ′.
- the inner surface of the metal housing 4 and the outer surface of the resilient material 5 may each be shaped to approximately correspond to the shape of the inner surface 8 of the stator 6 ′, which may be the same shape as the inner surface 8 of the stator 6 shown in FIG. 2A . That is, the thickness of the resilient material 5 ′ may be approximately uniform, and the shape of the inner surface 8 may be based on the shape of the inner surface of the metal housing 4 ′.
- the stator 6 ′ may be referred to as “pre-contoured” because the shape of the inner surface 8 of the stator 6 ′ is defined before application of the resilient material 5 ′.
- the stator 6 ′ may be used in either direction in a hydraulic drilling motor 10 ( FIG. 1A ), as described above with respect to the stator 6 in reference to FIGS. 2A and 3 . That is, when the rotor 11 rotates in the direction indicated by arrow 15 , forces on the resilient material 5 ′ may be concentrated on surfaces 44 a - 44 f of the lobes 42 a - 42 f .
- the surfaces 46 a - 46 f opposite the surfaces 44 a - 44 f may be exposed to relatively little stress.
- the portions of the lobes 42 a - 42 f nearest the surfaces 44 a - 44 f may sustain more damage than the portions of the lobes 42 a - 42 f nearest the surfaces 46 a - 46 f .
- the portions of the lobes 42 a - 42 f nearest the surfaces 46 a - 46 f may sustain little to no significant damage when the stator 6 ′ is used in the orientation of FIG. 7 .
- the stator 6 ′ may be reversed (e.g., inverted by flipping end-to-end). As the rotor 11 rotates, different portions of the stator 6 ′ experience relatively higher stresses from the portions experiencing relatively higher stresses in the orientation shown in FIG. 7 . For example, forces on the resilient material 5 ′ may be concentrated on surfaces 46 a - 46 f of the lobes 42 a - 42 f . The surfaces 44 a - 44 f opposite the surfaces 46 a - 46 f may be exposed to relatively lower stress at this time.
- the portions of the lobes 42 a - 42 f nearest the surfaces 46 a - 46 f may sustain more damage than the portions of the lobes 42 a - 42 f nearest the surfaces 44 a - 44 f .
- the wear on the resilient material 5 ′ may be approximately the same near the surfaces 44 a - 44 f and the surfaces 46 a - 46 f .
- Reversal of the stator 6 ′ may enable the stator 6 ′ to have a longer useful life.
- the stator 6 ′ when configured as described, may have lower risk of failure in service, such as by cracking and separation of the resilient material 5 ′ while the stator 6 ′ is downhole.
- the stator 6 ′ may be reversibly used to limit non-productive time and tool damage.
- FIG. 8 illustrates a cross-sectional view of another stator 6 ′′.
- the stator 6 ′′ includes a metal housing 4 ′′ and a cartridge 80 .
- the cartridge 80 includes a metal shell 82 and a resilient material 5 ′′ secured to the metal shell 82 .
- the resilient material 5 ′′ may be bonded to the metal shell 82 by physical or chemical means. For example, an adhesive may be disposed between the resilient material 5 ′′ and the metal shell 82 .
- the resilient material 5 ′′ may be structured and shaped such that the resilient material 5 ′′ stays in place within the metal shell 82 .
- the cartridge 80 may include a mechanism for attachment in the metal housing 4 ′′, such as one or more tabs 84 .
- the tabs 84 may protrude from the metal shell 82 , and, when the cartridge 80 is placed within the metal housing 4 ′′, may be disposed within one or more corresponding slots 86 in the metal housing 4 ′′.
- rotation of the cartridge 80 within the metal housing 4 ′′ may be restricted by the interference of the tabs 84 with the metal housing 4 ′′.
- the cartridge 80 may be removable from the metal housing 4 ′′ so that the cartridge 80 may be operated in either of two opposing orientations, as previously described herein.
- the cartridge 80 may be configured to slide into and out of the metal housing 4 ′′ when the stator 6 ′′ is at least partially disconnected from a drill string. For example, when the stator 6 ′′ is separated from a bearing assembly 2 ( FIG. 1B ), the cartridge 80 may slide out of the metal housing 4 ′′ around the rotor 11 .
- the cartridge 80 may include pins or other fastening means to lock the cartridge 80 inside the metal housing 4 ′′.
- a stator 6 ′′ having a cartridge 80 need not have the same connection hardware (e.g., threads, adapters, etc.) at both ends thereof because the cartridge 80 itself can be reversed within the metal housing 4 ′′.
- connection hardware e.g., threads, adapters, etc.
- a stator 6 ′′ having a cartridge 80 may be fitted to existing drill strings with little modification, and without adapters.
- FIG. 9 illustrates a cross-sectional view of another rotor 11 ′.
- the rotor 11 ′ includes a metal core 13 ′ and a resilient material 14 ′.
- the outer surface of the metal core 13 ′ may be circular, and the outer surface of the resilient material 14 ′ may have lobes 48 a - 48 e .
- the thickness of the resilient material 14 ′ may be nonuniform.
- the rotor 11 ′ may be used in either direction in a hydraulic drilling motor 10 ( FIG. 1A ), as described above with respect to the rotor 11 in reference to FIGS. 2B and 4 .
- FIG. 10 illustrates a cross-sectional view of another rotor 11 ′′.
- the rotor 11 ′′ includes a metal core 13 ′′ and a cartridge 90 over the metal core 13 ′′.
- the cartridge 90 includes a metal shell 92 and a resilient material 14 ′′ secured to the metal shell 92 .
- the resilient material 14 ′′ may be bonded to the metal shell 92 by physical or chemical means. For example, an adhesive may be disposed between the resilient material 14 ′′ and the metal shell 92 .
- the resilient material 14 ′′ may be structured and shaped such that the resilient material 14 ′′ stays in place over the metal shell 92 .
- the cartridge 90 may include a mechanism for attachment to the metal core 13 ′′, such as one or more tabs 94 .
- the tabs 94 may protrude from a surface of the metal shell 92 , and, when the cartridge 90 is placed over the metal core 13 ′′, may be disposed within one or more corresponding slots 96 in the metal core 13 ′′.
- rotation of the cartridge 90 with respect to the metal core 13 ′′ may be restricted by the interference of the tabs 94 with the metal core 13 ′′.
- the cartridge 90 may be removable from the metal core 13 ′′ so that the cartridge 90 may be operated in either of two opposing orientations, as previously described herein.
- the cartridge 90 may be configured to slide onto and off of the metal core 13 ′′ when the rotor 11 ′′ is at least partially disconnected from a drill string. For example, when the rotor 11 ′′ is separated from a stator 6 ( FIG. 1A ), the cartridge 90 may slide off of the metal core 13 ′′.
- the cartridge 90 may include pins or other fastening means to lock the cartridge 90 to the metal core 13 ′′.
- a rotor 11 ′′ having a cartridge 90 need not have the same connection hardware (e.g., threads, adapters, etc.) at both ends thereof because the cartridge 90 itself can be reversed over the metal core 13 ′′.
- connection hardware e.g., threads, adapters, etc.
- a rotor 11 ′′ having a cartridge 90 may be fitted to existing drill strings with little modification, and without adapters.
- a hydraulic tool comprising a stator and a rotor rotatably disposed within the stator. At least one of at least an inner portion of the stator and at least an outer portion of the rotor is configured to be installed in a drill string in either of two inverted orientations along a longitudinal axis of the hydraulic tool. The rotor is configured to rotate within the stator in either of the two inverted orientations.
- the resilient material comprises a material selected from the group consisting of fluorosilicone rubber, nitrile butadiene rubber, fluoroelastomers, hydrogenated nitrile butadiene rubber, fluorinated ethylene propylene, vinyl methyl polysiloxane, carboxylated nitrile butadiene rubber, polyacrylate acrylic rubber, perfluoroelastomers, ethylene propylene rubber, ethylene propylene diene monomer rubber, and acrylic ethylene copolymer.
- the first set of threads and the second set of threads are each configured to be secured to adapters having corresponding fittings.
- stator comprises an outer casing and a removable cartridge within the outer casing.
- the hardfacing material comprises a material selected from the group consisting of chrome, nickel, cobalt, tungsten carbide, diamond, diamond-like-carbon, boron carbide, cubic boron nitride, nitrides, carbides, oxides, borides, and alloys hardened by nitriding, boriding, or carbonizing.
- a method of using a hydraulic tool includes disposing a rotor within a cavity defined by a stator.
- the stator has a plurality of lobes having a first end disposed proximate an upper end of the hydraulic tool and a second end longitudinally opposite the first end disposed proximate a lower end of the hydraulic tool.
- the rotor has at least one lobe having a first end and a second end longitudinally opposite the first end. The first end of the at least one lobe of the rotor is disposed proximate the upper end of the hydraulic tool, and the second end of the at least one lobe of the rotor is disposed proximate the lower end of the hydraulic tool.
- the methods further include passing a fluid through the cavity defined by the stator to rotate the rotor and at least one of removing the rotor from the cavity defined by the stator and removing the stator from the hydraulic tool.
- the methods include at least one of disposing the rotor into the cavity defined by the stator such that the first end of the rotor is disposed proximate the lower end of the hydraulic tool and the second end of the rotor is disposed proximate the upper end of the hydraulic tool and securing the stator to the hydraulic tool such that the first end of the stator is proximate the lower end of the hydraulic tool and the second end of the stator is proximate the upper end of the hydraulic tool.
- Embodiment 17 wherein passing a fluid through the cavity defined by the stator comprises forming a plurality of movable discrete sealed cavities, the discrete sealed cavities defined by an exterior surface of the at least one lobe of the rotor and an interior surface of the plurality of lobes of the stator.
- Embodiment 17 or Embodiment 18 further comprising separating a cartridge comprising the plurality of lobes from an outer casing of the stator, reversing a longitudinal orientation of the cartridge with respect to the outer casing, and inserting the cartridge into the outer casing in the reversed longitudinal orientation.
- a drilling system comprising a fluid source, a hydraulic tool, a drive shaft operatively associated with the rotor of the hydraulic tool, and a drill bit operatively associated with the drive shaft.
- the hydraulic tool includes a stator and a rotor rotatably disposed within the stator. At least one of at least an inner portion of the stator and at least an outer portion of the rotor is configured to be installed in a drill string in either of two inverted orientations along a longitudinal axis of the hydraulic tool.
- the rotor is configured to rotate within the stator in either of the two orientations of the stator when fluid is provided to the hydraulic drilling motor from the fluid source.
- a progressive cavity pump comprising a stator and a rotor rotatably disposed within the stator such that the rotor and the stator together define at least one movable fluid cavity. At least an outer portion of the rotor is configured to be installed in either of two inverted orientations along a longitudinal axis of at least an inner portion of the stator. The rotor is configured to rotate within the stator in either of the two inverted orientations.
- a hydraulic drilling motor comprising a stator and a rotor rotatably disposed within the stator. At least an inner portion of the stator is configured to be installed in a drill string in either of two inverted orientations along a longitudinal axis of the hydraulic drilling motor. The rotor is configured to rotate within the stator in either of the two orientations of the stator.
- a drilling system comprising a fluid source, a hydraulic drilling motor, a drive shaft operatively associated with the rotor of the hydraulic drilling motor, and a drill bit operatively associated with the drive shaft.
- the hydraulic drilling motor includes a stator and a rotor rotatably disposed within the stator. At least an inner portion of the stator is configured to be installed in a drill string in either of two inverted orientations along a longitudinal axis of the hydraulic drilling motor.
- the rotor is configured to rotate within the stator in either of the two orientations of the stator when fluid is provided to the hydraulic drilling motor from the fluid source.
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Hydraulic Motors (AREA)
- Rotary Pumps (AREA)
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
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US14/071,876 US20150122549A1 (en) | 2013-11-05 | 2013-11-05 | Hydraulic tools, drilling systems including hydraulic tools, and methods of using hydraulic tools |
EP14859966.5A EP3066287B1 (de) | 2013-11-05 | 2014-11-04 | Hydraulische werkzeuge, bohrsysteme mit hydraulischen werkzeugen und verfahren zur verwendung hydraulischer werkzeuge |
PCT/US2014/063807 WO2015069618A1 (en) | 2013-11-05 | 2014-11-04 | Hydraulic tools, drilling systems including hydraulic tools, and methods of using hydraulic tools |
US15/649,807 US11261666B2 (en) | 2013-11-05 | 2017-07-14 | Hydraulic tools, drilling systems including hydraulic tools, and methods of using hydraulic tools |
US17/648,386 US11821288B2 (en) | 2013-11-05 | 2022-01-19 | Hydraulic tools, drilling systems including hydraulic tools, and methods of using hydraulic tools |
US17/822,341 US11946341B2 (en) | 2013-11-05 | 2022-08-25 | Hydraulic tools, drilling systems including hydraulic tools, and methods of using hydraulic tools |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US14/071,876 US20150122549A1 (en) | 2013-11-05 | 2013-11-05 | Hydraulic tools, drilling systems including hydraulic tools, and methods of using hydraulic tools |
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US15/649,807 Division US11261666B2 (en) | 2013-11-05 | 2017-07-14 | Hydraulic tools, drilling systems including hydraulic tools, and methods of using hydraulic tools |
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US14/071,876 Abandoned US20150122549A1 (en) | 2013-11-05 | 2013-11-05 | Hydraulic tools, drilling systems including hydraulic tools, and methods of using hydraulic tools |
US15/649,807 Active 2036-01-07 US11261666B2 (en) | 2013-11-05 | 2017-07-14 | Hydraulic tools, drilling systems including hydraulic tools, and methods of using hydraulic tools |
US17/648,386 Active US11821288B2 (en) | 2013-11-05 | 2022-01-19 | Hydraulic tools, drilling systems including hydraulic tools, and methods of using hydraulic tools |
US17/822,341 Active US11946341B2 (en) | 2013-11-05 | 2022-08-25 | Hydraulic tools, drilling systems including hydraulic tools, and methods of using hydraulic tools |
Family Applications After (3)
Application Number | Title | Priority Date | Filing Date |
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US15/649,807 Active 2036-01-07 US11261666B2 (en) | 2013-11-05 | 2017-07-14 | Hydraulic tools, drilling systems including hydraulic tools, and methods of using hydraulic tools |
US17/648,386 Active US11821288B2 (en) | 2013-11-05 | 2022-01-19 | Hydraulic tools, drilling systems including hydraulic tools, and methods of using hydraulic tools |
US17/822,341 Active US11946341B2 (en) | 2013-11-05 | 2022-08-25 | Hydraulic tools, drilling systems including hydraulic tools, and methods of using hydraulic tools |
Country Status (3)
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US (4) | US20150122549A1 (de) |
EP (1) | EP3066287B1 (de) |
WO (1) | WO2015069618A1 (de) |
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Also Published As
Publication number | Publication date |
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US11821288B2 (en) | 2023-11-21 |
EP3066287A4 (de) | 2017-07-05 |
US11261666B2 (en) | 2022-03-01 |
US20170306700A1 (en) | 2017-10-26 |
WO2015069618A1 (en) | 2015-05-14 |
US20230003083A1 (en) | 2023-01-05 |
US20220145706A1 (en) | 2022-05-12 |
US11946341B2 (en) | 2024-04-02 |
EP3066287A1 (de) | 2016-09-14 |
EP3066287B1 (de) | 2018-12-26 |
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