CN110873046A - Cross oil pipe and throw formula of salvaging electric submersible screw pump - Google Patents
Cross oil pipe and throw formula of salvaging electric submersible screw pump Download PDFInfo
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- CN110873046A CN110873046A CN201911346067.XA CN201911346067A CN110873046A CN 110873046 A CN110873046 A CN 110873046A CN 201911346067 A CN201911346067 A CN 201911346067A CN 110873046 A CN110873046 A CN 110873046A
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- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 18
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 15
- 239000010959 steel Substances 0.000 claims abstract description 15
- 238000007789 sealing Methods 0.000 claims description 81
- 230000001012 protector Effects 0.000 claims description 11
- 230000009467 reduction Effects 0.000 claims description 7
- 238000012423 maintenance Methods 0.000 abstract description 13
- 230000008439 repair process Effects 0.000 abstract description 6
- 239000003921 oil Substances 0.000 description 63
- 238000004519 manufacturing process Methods 0.000 description 10
- 239000004576 sand Substances 0.000 description 8
- 230000008878 coupling Effects 0.000 description 6
- 238000010168 coupling process Methods 0.000 description 6
- 238000005859 coupling reaction Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000000605 extraction Methods 0.000 description 4
- 230000005484 gravity Effects 0.000 description 3
- 230000000750 progressive effect Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000002609 medium Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
- F04C13/008—Pumps for submersible use, i.e. down-hole pumping
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- 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
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
- F04C15/0061—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0088—Lubrication
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a through-oil pipe throwing and fishing type electric submersible screw pump, which belongs to a throwing and fishing type electric submersible screw pump in the technical field of screw pump equipment, and aims to provide electric submersible screw pump equipment for realizing independent maintenance of a screw pump, the technical scheme is that the electric submersible screw pump equipment comprises an oil pipe feeding tool set and a steel wire feeding tool set, the oil pipe feeding tool set comprises a centralizer, a sensor, a motor, a reducer and a receiver which are sequentially connected from bottom to top, the steel wire feeding tool set comprises a continuous oil pipe, a continuous rod and a screw pump which are sequentially connected from top to bottom, the screw pump is arranged in the receiver, a seating joint is arranged at the bottom of the screw pump, the upper end of the seating joint is connected with a pump main shaft, the lower end of the seating joint is connected with the bottom of the receiver in a clamping manner, and the receiver can drive the seating joint to; the invention provides a through oil pipe throwing and fishing type electric submersible screw pump, which greatly saves the working hours of maintenance and repair and saves the maintenance cost of equipment and manpower.
Description
Technical Field
The invention relates to the technical field of screw pump equipment, in particular to a through-oil pipe throwing and fishing type electric submersible screw pump.
Background
An Electric Submersible progressive screw pump (ESPCP) is a combination of a screw pump (PCP) and an Electric Submersible Pump (ESP). With the gradual deepening of oil field development, the proportion of thick oil, sand and medium and low yield wells is increased day by day, and the conventional beam pumping unit causes frequent and even production stop of oil well operation due to the phenomena of pump clamping, rod clamping, pump abrasion, sucker rod breaking and the like caused by thick oil and sand production. The search for new oil extraction technology has become a necessary way for further development of various oil fields. The screw pump is suitable for discharging viscous liquid and solid-phase-containing liquid, and has uniform and stable flow. However, the ground-driven screw pump cannot be popularized and applied because the driving rod is easy to cause the problems of rod breakage, rod pipe abrasion, rod clamping and the like. In this context, Electrical Submersible Progressive Cavity Pumps (ESPCPs) that have the advantages of rodless production, downhole drive, and progressive cavity pumps at the same time are of general interest.
The electric submersible screw pump oil production system (ESPCP) directly drives the screw pump to lift liquid by utilizing the underground submersible motor, integrates the advantages of a rodless oil production system, underground motor drive and the screw pump, saves energy by 30-60 percent compared with a rod pump, can break through the pumping depth of the rod pump, and can be applied to thick oil wells, sand production wells, gas-containing wells, inclined wells and horizontal wells. The electric submersible screw pump has remarkable effects of avoiding phenomena of sand blocking, broken and falling of a sucker rod, rod clamping and the like caused by sand production, simultaneously, the ESPCP can not excite an oil layer, has the effects of preventing sand and reducing water content, is used as novel rodless oil extraction equipment, and has unique advantages in the crude oil extraction of high-viscosity thick oil, high sand content, high gas content and inclined wells. The problems that the sucker rod of the sucker-rod pump breaks and falls off in the heavy oil exploitation and the rod pipe is eccentrically worn when the sucker-rod pump is applied to a deep well and an inclined well are fundamentally solved, and the sucker-rod pump has the advantages of long pump detection period, high pump efficiency, low energy consumption and the like; with continuous input of various oil and gas field difficultly-used reserves (such as heavy oil wells, sand production wells, coal bed gas wells and the like) for exploitation, the matching equipment of the oil extraction process has new requirements, and the screw pump is gradually popularized and applied with the unique advantages of the screw pump. However, the ground-driven screw pump often has the problems of loosening of a coupling of a sucker rod and thread damage, eccentric wear of the sucker rod and an oil pipe and the like when the screw pump is used in a horizontal well and a directional well, and the electric submersible screw pump oil production system is more and more favored by oil and gas fields due to the fact that the electric submersible screw pump oil production system does not need the sucker rod, can use a small-size oil pipe, saves energy, does not generate air lock and the like.
The whole equipment of the electric submersible screw pump in the prior art is put into a well along with an oil pipe, the oil pipe and the unit are lifted out of the well integrally during well repair, and the equipment is replaced and put into the well again. The motor part of the electric submersible screw pump is usually long in service life and the screw pump, and a workover rig is needed when the well is repaired and the oil pipe is lowered every time, so that the problem of overlarge cost is caused, the maintenance and repair working hours are greatly increased, meanwhile, the electric submersible screw pump is not convenient to operate, and the cost is not small.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the oil pipe delivery type electric submersible screw pump device, which is characterized in that the screw pump which is most easily damaged is detachably coupled with the whole electric submersible screw pump, so that the screw pump can be independently maintained, the working hours of maintenance and repair are greatly saved, and the equipment and labor maintenance cost is saved.
The utility model provides a cross oil pipe and throw formula of salvaging electric submersible screw pump, sends into instrument group and steel wire and sends into instrument group including oil pipe, oil pipe sends into instrument group and includes centralizer, sensor, motor, reduction gear and the receiver that from the bottom up connected gradually, steel wire sends into instrument group and includes coiled tubing, continuous rod and the screw pump that from the top down connected gradually, inside the receiver was arranged in to the screw pump, the bottom of screw pump is provided with the seat and connects, and the seat connects the upper end and is connected with the pump main shaft, the seat connects the lower extreme and is connected with receiver bottom chucking, the receiver can drive the seat and connect the rotation.
Preferably, the receiver includes the hollow tube, sets up the receipt base in the hollow tube bottom, sets up the oil pipe entry at the hollow tube lateral wall, the rotation main shaft of reduction gear rotates with the receipt base to be connected, the inside wall of hollow tube is provided with sealing base, there is sealing base to be the rotation structure, sealing base's top is the conical surface structure, sealing base's below is provided with the lock ring.
Preferably, the screw pump further comprises a pump inlet arranged at the lower end and a sealing ring arranged in the middle, the pump inlet is arranged on the side wall of the pump, and the sealing ring is connected with the upper part of the sealing base in a sealing mode.
Preferably, the sealing ring is a conical ring adapted to the sealing seat.
Preferably, the cable connected to the motor is disposed between the tubing running tool set and the inner wall of the tubing.
Preferably, a protector is further connected and arranged between the speed reducer and the receiver.
Preferably, the input end of the protector is rotatably connected with the output end of the speed reducer, the output end of the protector is provided with a rotating main shaft, and the rotating main shaft is fixedly connected with the bottom of the receiver.
Preferably, a rubber layer is arranged on a conical surface which is arranged above the sealing base and is tightly attached to the sealing ring.
The invention has the beneficial effects that:
1. according to the invention, the oil pipe feeding tool group is arranged underground along with the oil pipe, the screw pump is fed into the oil pipe through the steel wire feeding tool group, the bottom of the screw pump is tightly connected with the bottom of the receiver in the oil pipe feeding tool, the receiver can be coupled and connected with the seat joint at the bottom of the screw pump, and the driving of the rotating main shaft power of the screw pump is realized.
2. According to the invention, the hollow pipe is arranged in the receiver, the oil pipe inlet is arranged on the side wall of the hollow pipe, and the rotating main shaft of the speed reducer is rotatably connected with the receiving base, so that when the sitting joint arranged at the bottom of the screw pump is tightly connected with the bottom of the receiver on the receiving base, the rotating output of the speed reducer drives the sitting joint of the screw pump to rotate, so that the rotating main shaft in the screw pump is driven to rotate, and the power work of the screw pump is realized.
3. According to the screw pump, the sealing base is arranged on the inner side wall of the hollow pipe, the sealing base is of a rotary structure, and the sealing ring is arranged on the outer wall of the screw pump, so that when the screw pump is arranged in the hollow pipe, the sealing base in the hollow pipe and the sealing ring arranged on the outer wall of the screw pump are sealed and clamped, gravity support of the screw pump is achieved, and clamping of a seat joint at the bottom of the screw pump and the receiving base is facilitated.
4. According to the invention, the sealing effect between the sealing ring and the sealing base is enhanced by sealing the sealing ring and the sealing base by the matched conical ring, so that the lower part of the screw pump is positioned in a sealed cavity, and therefore, oil outside the oil pipe can enter the screw pump from the inlet end of the screw pump and can be output from the upper end of the screw pump under the negative pressure environment generated by the pump.
5. According to the invention, the arrangement of the protector ensures good lubrication of the underground speed reducer, and the service life of the speed reducer can be effectively prolonged; the bearing capacity of the thrust force is enhanced.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
FIG. 1 is a schematic view of the overall structure of an electric submersible screw pump apparatus according to the present invention;
FIG. 2 is a schematic view of a screw pump according to the present invention inside a receiver.
In the drawing, 1-tubing running tool set, 2-wireline running tool set, 3-centralizer, 4-sensor, 5-motor, 6-decelerator, 7-receiver, 9-coiled tubing, 10-coiled rod, 11-screw pump, 12-landing joint, 13-hollow tube, 14-receiving base, 15-tubing inlet, 16-sealing base, 17-locking ring, 18-pump inlet, 19-sealing ring, 20-cable, 21-tubing, 22-protector.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains.
A through oil pipe throwing and fishing type electric submersible screw pump comprises an oil pipe feeding tool set 1 and a steel wire feeding tool set 2, wherein the oil pipe feeding tool set 1 comprises a centralizer 3, a sensor 4, a motor 5, a speed reducer 6 and a receiver 7 which are sequentially connected from bottom to top, the steel wire feeding tool set 2 comprises a continuous oil pipe 9, a continuous rod 10 and a screw pump 11 which are sequentially connected from top to bottom, the screw pump 11 is arranged in the receiver 7, a sitting joint 12 is arranged at the bottom of the screw pump 11, the upper end of the sitting joint 12 is connected with a pump spindle, the lower end of the sitting joint 12 is connected with the bottom of the receiver 7 in a clamping manner, and the receiver 7 can drive the sitting joint 12 to rotate; the oil pipe feeding tool set 1 is arranged in a well along with an oil pipe 21, the screw pump 11 is fed into the oil pipe 21 through the steel wire feeding tool set 2, the bottom of the screw pump 11 is connected with the bottom of the receiver 7 in the oil pipe 21 feeding tool in a clamping mode, the receiver 7 can be connected with the seat joint 12 at the bottom of the screw pump 11 in a coupling mode, driving of power of a rotating main shaft of the screw pump 11 is achieved, therefore, the screw pump 11 and the oil pipe feeding tool set 1 which are detachably connected work in a matched mode, independent lifting and maintenance of the screw pump 11 which is most prone to damage are achieved, working hours of maintenance and repair are greatly saved, and equipment and manual maintenance cost is saved.
Preferably, the receiver 7 comprises a hollow pipe 13, a receiving base 14 arranged at the bottom of the hollow pipe 13, and an oil pipe inlet 15 arranged on the side wall of the hollow pipe 13, wherein a rotating main shaft of the speed reducer 6 is rotatably connected with the receiving base 14, a sealing base 16 is arranged on the inner side wall of the hollow pipe 13, the sealing base 16 is of a rotating structure, a conical surface structure is arranged above the sealing base 16, and a locking ring 17 is arranged below the sealing base 16; through set up hollow tube 13 in receiver 7, and set up oil pipe entry 15 at the lateral wall of hollow tube 13, the rotation main shaft and the receipt base 14 of reduction gear 6 rotate and are connected, when the seat that the bottom of screw pump 11 set up connects 12 and the receipt 7 bottom chucking on the base 14 is connected from this, the rotation output of reduction gear 6 drives the seat that screw pump 11 connects 12 and rotates, thereby drive the inside rotation main shaft rotation of screw pump 11, realize the power work of screw pump 11 from this, the coupling through the seat that receives base 14 and screw pump 11's bottom set up connects 12 rotates and is connected, realize the separable effect to screw pump 11, the maintenance work after the screw pump 11 damages of later stage of being convenient for.
Preferably, the screw pump 11 further comprises a pump inlet 18 arranged at the lower end and a sealing ring 19 arranged in the middle, the pump inlet 18 is arranged on the side wall of the screw pump 11, and the sealing ring 19 is connected with the upper part of the sealing base 16 in a sealing manner; through the inside wall at hollow tube 13 setting up sealing base 16 to make sealing base 16 be the circulation structure, set up sealing ring 19 with the outer wall of screw pump 11 simultaneously, from this, when screw pump 11 was arranged in hollow tube 13, sealing base 16 inside hollow tube 13 and the sealing ring 19 of the outer wall setting of screw pump 11 sealed chucking, realize the gravity support to screw pump 11 from this, be favorable to the chucking of the seat joint 12 of screw pump 11 bottom and receiving base 14.
Preferably, the sealing ring 19 is a conical ring adapted to the sealing seat 16; the sealing connection between the sealing ring 19 and the sealing base 16 is a conical ring which is matched with each other for sealing, the sealing effect between the sealing ring and the sealing base is increased, and the lower part of the screw pump 11 is located in a sealed cavity, so that oil outside the oil pipe 21 can enter the screw pump 11 from the inlet end of the screw pump 11 and can be output from the upper end of the screw pump 11 under the negative pressure environment generated by the pump.
Preferably, the cable 20 connected to the motor 5 is disposed between the tubing running tool set 1 and the inner wall of the tubing 21.
Preferably, a protector 22 is further connected between the speed reducer 6 and the receiver 7.
Preferably, the input end of the protector 22 is rotatably connected with the output end of the speed reducer 6, the output end of the protector 22 is provided with a rotating main shaft, and the rotating main shaft is fixedly connected with the bottom of the receiver 7; the protector 22 ensures good lubrication of the underground speed reducer 6, and can effectively prolong the service life of the speed reducer 6; the bearing capacity of the thrust force is enhanced.
Preferably, a rubber layer is provided on a tapered surface of the seal base 16, which is in close contact with the seal ring 19.
Example 1
The embodiment provides a through-oil pipe throwing and fishing type electric submersible screw pump, which comprises an oil pipe feeding tool set 1 and a steel wire feeding tool set 2, wherein the oil pipe feeding tool set 1 comprises a centralizer 3, a sensor 4, a motor 5, a speed reducer 6 and a receiver 7 which are sequentially connected from bottom to top, the steel wire feeding tool set 2 comprises a continuous oil pipe 9, a continuous rod 10 and a screw pump 11 which are sequentially connected from top to bottom, the screw pump 11 is arranged in the receiver 7, a seating joint 12 is arranged at the bottom of the screw pump 11, the upper end of the seating joint 12 is connected with a pump spindle, the lower end of the seating joint 12 is connected with the bottom of the receiver 7 in a clamping manner, and the receiver 7 can drive the seating joint 12 to rotate; the oil pipe feeding tool set 1 is arranged in a well along with an oil pipe 21, the screw pump 11 is fed into the oil pipe 21 through the steel wire feeding tool set 2, the bottom of the screw pump 11 is tightly connected with the bottom of the receiver 7 in the oil pipe 21 feeding tool, the receiver 7 can be coupled with the seat joint 12 at the bottom of the screw pump 11, and the driving of the power of a rotating main shaft of the screw pump 11 is realized, so that the screw pump 11 which is detachably connected is matched with the oil pipe feeding tool set 1 to work, the screw pump 11 which is most easily damaged is independently lifted and maintained, the working hours of maintenance and repair are greatly saved, and the equipment and labor maintenance cost is saved;
as a preferred technical solution of this embodiment: the mode that the receiver 7 and the seat joint 12 of screw pump 11 bottom carry out coupling connection includes that the bottom shaft coupling sets up through the bottom that connects 12 at the seat and the receiver 7 is meshed and is connected, when needs maintain screw pump 11, directly propose screw pump 11 with receiver 7 separate and just can realize taking out to ground screw pump 11 and maintain the work.
Example 2
The embodiment is further optimized on the basis of embodiment 1, and specifically, the receiver 7 includes a hollow tube 13, a receiving base 14 disposed at the bottom of the hollow tube 13, and an oil pipe inlet 15 disposed on a side wall of the hollow tube 13, a rotating main shaft of the speed reducer 6 is rotatably connected to the receiving base 14, a sealing base 16 is disposed on an inner side wall of the hollow tube 13, the sealing base 16 is of a rotating structure, a conical surface structure is disposed above the sealing base 16, and a locking ring 17 is disposed below the sealing base 16; the hollow pipe 13 is arranged in the receiver 7, the oil pipe inlet 15 is arranged on the side wall of the hollow pipe 13, and the rotating main shaft of the speed reducer 6 is rotatably connected with the receiving base 14, so that when the seat joint 12 arranged at the bottom of the screw pump 11 is tightly connected with the bottom of the receiver 7 on the receiving base 14, the rotating output of the speed reducer 6 drives the seat joint 12 of the screw pump 11 to rotate, so that the rotating main shaft in the screw pump 11 is driven to rotate, and the power work of the screw pump 11 is realized, and the separable effect on the screw pump 11 is realized through the coupling rotary connection of the receiving base 14 and the seat joint 12 arranged at the bottom of the screw pump 11, so that the maintenance work after the screw pump 11 is damaged in the later period;
as a preferred technical solution of this embodiment: the locking ring 17 is arranged below the sealing base 16, the locking ring 17 locks and supports the outer wall of the screw pump 11, and when the central rotation main shaft of the screw pump 11 is kept to rotate stably, the shell of the screw pump 11 is prevented from rotating under the action of inertia force, so that the stability of the shell of the screw pump 11 relative to an oil pipe is ensured.
Example 3
The embodiment is further optimized on the basis of embodiment 2, specifically, the screw pump 11 further includes a pump inlet 18 disposed at the lower end and a sealing ring 19 disposed at the middle part, the pump inlet 18 is disposed on the side wall of the screw pump 11, and the sealing ring 19 is connected with the upper part of the sealing base 16 in a sealing manner; by arranging the sealing base 16 on the inner side wall of the hollow pipe 13, enabling the sealing base 16 to be in a circulating structure and arranging the sealing ring 19 on the outer wall of the screw pump 11, when the screw pump 11 is arranged in the hollow pipe 13, the sealing base 16 inside the hollow pipe 13 and the sealing ring 19 arranged on the outer wall of the screw pump 11 are tightly sealed and clamped, so that gravity support for the screw pump 11 is realized, and clamping of the seating joint 12 at the bottom of the screw pump 11 and the receiving base 14 is facilitated;
as a preferred technical solution of this embodiment: the outer end face of the sealing ring 19 is a conical surface, and the upper end face of the sealing base 16 is a conical surface, so that the sealing ring 19 and the sealing base 16 are connected in a sealing manner by the conical end face between the two.
Example 4
The embodiment is further optimized on the basis of the embodiment 3, and specifically, the cable 20 connected to the motor 5 is arranged between the oil pipe running tool set 1 and the inner wall of the oil pipe 21;
the cable is in the oil pipe outside, and the steel wire is sent into the instrument group and is retrieved through the steel wire, and current like product has the cable inside oil pipe, through the design of cable recovery unit, and the loaded down with trivial details of the recovery that increases.
Example 5
The embodiment is further optimized on the basis of the above embodiment, and specifically, a rubber layer is arranged on a conical surface which is tightly attached to the sealing ring 19 above the sealing base 16;
as a preferred technical solution of this embodiment: the rubber layers comprise a first rubber layer arranged along the tapered end face of the sealing base 16 and a second rubber layer arranged along the tapered end face of the sealing ring 19, and the rubber layers are arranged on the end faces, in contact with each other, of the sealing base 16 and the sealing ring 19, so that the sealing performance between the joints is enhanced.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (8)
1. The utility model provides a cross oil pipe and throw formula of salvaging electric submersible screw pump, includes that oil pipe sends into instrument group (1) and steel wire and sends into instrument group (2), its characterized in that: oil pipe sends into instrument group (1) and includes centralizer (3), sensor (4), motor (5), reduction gear (6) and receiver (7) that from the bottom up connected gradually, steel wire sends into instrument group (2) and includes coiled tubing (9), continuous rod (10) and screw pump (11) that from the top down connected gradually, receiver (7) are arranged in inside in screw pump (11), the bottom of screw pump (11) is provided with and sits and connects (12), and it connects (12) upper end and is connected with the pump main shaft to sit, it connects (12) lower extreme and receiver (7) bottom chucking to sit to be connected, receiver (7) can drive and sit and connect (12) rotation.
2. The pump according to claim 1, wherein the pump further comprises: receiver (7) include hollow tube (13), set up receiving base (14) in hollow tube (13) bottom, set up oil pipe entry (15) at hollow tube (13) lateral wall, the rotation main shaft of reduction gear (6) rotates with receiving base (14) and is connected, the inside wall of hollow tube (13) is provided with seal receptacle (16), there is seal receptacle (16) to rotate the structure, the top of seal receptacle (16) is the conical surface structure, the below of seal receptacle (16) is provided with lock ring (17).
3. The pump according to claim 2, wherein the pump further comprises: the screw pump (11) further comprises a pump inlet (18) arranged at the lower end and a sealing ring (19) arranged in the middle, the pump inlet (18) is arranged on the side wall of the screw pump (11), and the sealing ring (19) is connected with the upper portion of the sealing base (16) in a sealing mode.
4. The pump according to claim 3, wherein the pump further comprises: the sealing ring (19) is a conical ring matched with the sealing base (16).
5. The pump according to claim 1, wherein the pump further comprises: the cable (20) connected with the motor (5) is arranged between the oil pipe feeding tool set (1) and the inner wall of the oil pipe (21).
6. The pump according to claim 1, wherein the pump further comprises: and a protector (22) is also connected between the speed reducer (6) and the receiver (7).
7. The pump according to claim 6, wherein the pump further comprises: the input of protector (22) rotates with the output of reduction gear (6) to be connected, the output of protector (22) is provided with rotates the main shaft, rotate the bottom fixed connection of main shaft and receiver (7).
8. The pump according to claim 4, wherein the pump further comprises: a rubber layer is arranged on the conical surface which is tightly attached to the sealing ring (19) above the sealing base (16).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115874987A (en) * | 2021-09-29 | 2023-03-31 | 中国石油天然气股份有限公司 | Small-diameter retrievable electric submersible screw pump oil production device and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115874987A (en) * | 2021-09-29 | 2023-03-31 | 中国石油天然气股份有限公司 | Small-diameter retrievable electric submersible screw pump oil production device and method |
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