CN104632139A - Rodless oil extraction device driven by underground permanent magnet linear motor - Google Patents
Rodless oil extraction device driven by underground permanent magnet linear motor Download PDFInfo
- Publication number
- CN104632139A CN104632139A CN201310571887.5A CN201310571887A CN104632139A CN 104632139 A CN104632139 A CN 104632139A CN 201310571887 A CN201310571887 A CN 201310571887A CN 104632139 A CN104632139 A CN 104632139A
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- China
- Prior art keywords
- mover
- pipe
- piston
- sand control
- oil
- 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.)
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Classifications
-
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B47/00—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
Abstract
The invention relates to a rodless oil extraction system driven by an underground permanent magnet linear motor. The rodless oil extraction system is composed of a front piston pipe, magnetic steel and a tail pipe. The front piston pipe is located at the uppermost end of the system and plays the roles of balancing pressure difference and preventing sand; the magnetic steel is located in the middle of the system, and the magnetic steel is powered by a cable to generate magnetic pumping so as to drive a rotor to linearly move in a reciprocating mode; the tail pipe is located at the lower end of the system and plays the roles of limiting the rotor and preventing sand for the motor; a pull-down oil well pump barrel is connected with the front piston pipe in a threaded mode, a pull-down oil well pump plunger and a motor pull rod are connected through a conversion connector with a pin, a pull-down oil well pump upper coupling is connected with an oil tube, an electronic rotor drives the pull-down oil well pump plunger to pump oil, and crude oil enters the oil tube from the pump barrel. According to the rodless oil extraction system, oil extraction without a pumping rod is achieved, and the rod pipe eccentric wear problem which can not be solved in a directional well is solved fundamentally; zero transmission from the motor to an oil well pump is achieved, stroke loss is eliminated, pumping efficiency of the oil well pump and system efficiency are improved, and operation safety risks are reduced.
Description
Technical field
The present invention be directed to oil field Rodless oil extraction technology and Rodless oil extraction system that the down-hole permanent-magnetism linear motor that designs drives, be applicable to the producing well that rod and tube partial-wear easily occurs for directional well, inclined shaft etc., belong to industrial gas oil underground operation tool technical field.
Background technology
In current mechanical oil production model, the advantages such as oil pumper sucker rod pump hoisting system is simple with its structure, technology maturation, reliability and durability, wide adaptability occupy leading position, account for about 90% of artificially lifted well's number., there is intrinsic eccentric wear problem in the part but it also comes with some shortcomings: first, increasing of the intensification of hanging along with the rising of oil-field aqueous, pump and special track well, this problem becomes more and more serious between sucker rod and oil pipe.Secondly, too much transmission link, overcome the weight of sucker rod own and elastic deformation will consume a part of power, finally cause that oil pumper sucker rod pumping system efficiency reduces, maintenance workload strengthens, add crude oil production cost.
The Rodless oil extraction system that down-hole permanent-magnetism linear motor drives is that permanent-magnetism linear motor is placed in down-hole, be straight reciprocating motion mechanical energy by magnetic pumping by converting electric energy, without any need for the transmission device of intermediate conversion mechanism, thus Direct driver oil well pump realizes lifting oil pumping.Compared with oil pumper sucker rod pumping system, owing to not needing sucker rod, eliminate loss of plunger stroke, improve pumping efficiency of oil pump and running efficiency of system, reduction energy consumption, also fundamentally solve the ubiquitous rod and tube partial-wear problem of directional well; Application digital control scheme adjustment System operational factor, reduces later stage operation expense and labour intensity; Systematically face portion only has switch board, and well head floor space is few.
Summary of the invention
The object of this invention is to provide the Rodless oil extraction system that a kind of down-hole permanent-magnetism linear motor drives.Compared with oil pumper sucker rod pumping system, fundamentally eliminate rod and tube partial-wear problem, decrease transmission link, be conducive to the raising of system effectiveness.
Concrete technical scheme of the present invention: the present invention is made up of secondary piston pipe, magnet steel, tail pipe three part; Secondary piston pipe, in the top of system, plays the effect of equilibrium pressure difference and sand control.Magnet steel, at the middle part of system, produces magnetic pumping by cable power supply, makes mover do straight reciprocating motion.Tail pipe plays effect that is spacing to mover, motor sand control in system lower end.
Drop-down oil pumping barrel is connected with secondary piston gas thread, and drop-down pump plunger is connected by the crossover sub adding pin with motor pull bar, and on drop-down pump, box cupling is connected with oil pipe.Electric mover drives drop-down pump plunger to pump, and crude oil enters oil pipe by pump barrel.
During up stroke, electric mover upwards runs and drives drop-down pump plunger upwards to run, and inlet valve is opened, valve of going on a tour cuts out, and completes the suction process of oil well pump; During down stroke, electric mover runs downwards and drives drop-down pump plunger to run downwards, and inlet valve cuts out, delivery valve is opened, and completes the discharge process of oil well pump.
Present invention achieves without the need to sucker rod oil production, fundamentally solve the rod and tube partial-wear problem that directional well cannot be eliminated; Achieve " Zero-drive Chain " of motor to oil well pump, eliminate loss of plunger stroke, improve pumping efficiency of oil pump and system effectiveness, decrease job safety risk.
Accompanying drawing explanation
Fig. 1 is secondary piston tubing string profile construction schematic diagram
In figure, 1, drop-down pump plunger, 2, secondary piston box cupling, 3, upper piston nut, 4, sand control packing, 5, mozzle, 6, secondary piston pipe, 7, connecting axle, 8, crossover sub, 9, front sand control piston, 10, dynamic seal, 11, lower piston nut, 12, secondary piston dog screw.
Fig. 2 is magnet steel profile construction schematic diagram
In figure, 13, cable, 14, wire bushing pipe, 15, lead-out wire nut, 16, lead-out wire pad, 17, mover cushion pad, 18, disc spring baffle plate, 19, sand control packing, 20, stator, 21, urceolus, 22, lead-out wire adpting flange, 23, draw spool, 24, mover locking nut, 25, cushion disc spring, 26, dynamic seal 27, mover, 28 mover support rings.
Fig. 3 is tail pipe column profile construction schematic diagram
In figure, 29, piston unt, 30, dynamic seal, 31, disc spring baffle plate, 32, mover cushion pad, 33, tail pipe, 34, tail nut, 35, stay pipe, 36, upper mover lock-screw, 37, sand control packing, 38, rear sand control piston, 39, buffering disc spring, 40, lower mover lock-screw.
Detailed description of the invention
For the Rodless oil extraction device that a down-hole permanent-magnetism linear motor drives, the present invention is elaborated.
Consult Fig. 1, drop-down pump plunger 1 is connected by the crossover sub 8 adding pin with motor pull bar, drop-down pump lower outer pipe is connected with motor secondary piston box cupling 2, and on drop-down pump, box cupling is connected with oil pipe tail end, by working vehicle by oil pipe, drop-down pump and down-hole linear motor G.I.H desired depth.
Front sand control piston 9 is connected with connecting axle 7 by the upper piston nut 3 at two ends, lower piston nut 11, front sand control piston 9 is equipped with sand control packing 4 and dynamic seal 10, jointly plays the sealing function to motor.
On secondary piston pipe 6, cover has mozzle 5, and fixed by secondary piston dog screw 12, mozzle 5 had both played the respiration of motor, also had the effect of filter well liquid impurity.
Consult Fig. 2, sand control packing 19 is housed in electric mover 27 upper end and dynamic seal 26 is connected by mover locking nut 24 with connecting axle 7, for preventing mover step-out, connecting axle is equipped with stop: mover cushion pad 17, disc spring baffle plate 18, buffering disc spring 25.
For ensureing the straightness accuracy that electric mover runs, a series of mover support ring 28 is housed between mover and stator 20.
Lead-out wire nut 15, lead-out wire pad 16, lead-out wire adpting flange 22 are housed in motor cable 13 extraction place, draw spool 23.Cable pigtail cover has wire bushing pipe 14.
Consult Fig. 3, sand control piston 38 is equipped with in electric mover lower end, is connected, sand control piston is equipped with sand control packing 37 and dynamic seal 30, jointly plays the sealing function to motor by piston unt 29 and upper mover safetied pin 36.
In sand control piston, stop is housed, comprises: buffering disc spring 39, disc spring baffle plate 31, mover cushion pad 32, lower mover lock-screw 40, the lower end union tail nut 34 of tail pipe 33 coordinates with stop and prevents mover step-out.
Down-hole permanent-magnetism linear motor connects drop-down pump, and to carry out the process of work as follows:
During up stroke, electric mover 27 upwards runs and drives drop-down pump plunger upwards to run, and inlet valve is opened, valve of going on a tour cuts out, and completes the suction process of oil well pump; During down stroke, electric mover 27 runs downwards and drives drop-down pump plunger to run downwards, and inlet valve cuts out, delivery valve is opened, and completes the discharge process of oil well pump.
Claims (4)
1. a Rodless oil extraction device for down-hole permanent-magnetism linear motor driving, is characterized in that: be made up of secondary piston pipe, magnet steel, tail pipe three part; Secondary piston pipe, in the top of system, plays the effect of equilibrium pressure difference and sand control; Magnet steel, at the middle part of system, produces magnetic pumping by cable power supply, makes mover do straight reciprocating motion; Tail pipe plays effect that is spacing to mover, motor sand control in system lower end;
Drop-down oil pumping barrel is connected with secondary piston gas thread, and drop-down pump plunger is connected by the crossover sub adding pin with motor pull bar, and on drop-down pump, box cupling is connected with oil pipe, and electronics mover drives drop-down pump plunger to pump, and crude oil enters oil pipe by pump barrel.
2. the Rodless oil extraction device of down-hole according to claim 1 permanent-magnetism linear motor driving, described secondary piston pipe by secondary piston box cupling, upper piston nut, sand control packing, mozzle, secondary piston pipe, connecting axle, crossover sub, front sand control piston, dynamic seal, lower piston nut, secondary piston dog screw is formed; It is characterized in that:
Drop-down pump plunger is connected by the crossover sub adding pin with motor pull bar, drop-down pump lower outer pipe is connected with motor secondary piston box cupling, on drop-down pump, box cupling is connected with oil pipe tail end, by working vehicle by oil pipe, drop-down pump and down-hole linear motor G.I.H desired depth;
Front sand control piston is connected with connecting axle by the upper piston nut at two ends, lower piston nut, front sand control piston is equipped with sand control packing and dynamic seal, jointly plays the sealing function to motor;
On secondary piston pipe, cover has mozzle, and fixed by secondary piston dog screw, mozzle had both played the respiration of motor, also had the effect of filter well liquid impurity.
3. down-hole according to claim 1 permanent-magnetism linear motor drive Rodless oil extraction device, described magnet steel by cable, wire bushing pipe, lead-out wire nut, lead-out wire pad, mover cushion pad, disc spring baffle plate, sand control packing, stator, urceolus, lead-out wire adpting flange, draws spool, mover locking nut, buffering disc spring dynamic seal mover, mover support ring is formed; It is characterized in that: sand control packing is housed in electric mover upper end and dynamic seal is connected by mover locking nut with connecting axle, for preventing mover step-out, connecting axle being equipped with stop: mover cushion pad, disc spring baffle plate, buffering disc spring;
For ensureing the straightness accuracy that electric mover runs, a series of mover support ring is housed between mover and stator;
In motor cable extraction place, lead-out wire nut, lead-out wire pad, lead-out wire adpting flange are housed, draw spool, cable pigtail cover and have wire bushing pipe.
4. down-hole according to claim 1 permanent-magnetism linear motor drive Rodless oil extraction device, described tail pipe column by piston unt, dynamic seal, disc spring baffle plate, mover cushion pad, tail pipe, tail nut, stay pipe, upper mover lock-screw, sand control packing, rear sand control piston, buffering disc spring, lower mover lock-screw is formed; Sand control piston is equipped with in electric mover lower end, is connected, sand control piston is equipped with sand control packing and dynamic seal by piston unt and upper mover safetied pin;
In sand control piston, stop is housed, comprises: buffering disc spring, disc spring baffle plate, mover cushion pad, lower mover lock-screw, the lower end union tail nut of tail pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310571887.5A CN104632139B (en) | 2013-11-13 | 2013-11-13 | A kind of Rodless oil extraction device of underground permanent-magnetism linear motor driving |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310571887.5A CN104632139B (en) | 2013-11-13 | 2013-11-13 | A kind of Rodless oil extraction device of underground permanent-magnetism linear motor driving |
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| CN104632139A true CN104632139A (en) | 2015-05-20 |
| CN104632139B CN104632139B (en) | 2017-07-14 |
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| CN201310571887.5A Active CN104632139B (en) | 2013-11-13 | 2013-11-13 | A kind of Rodless oil extraction device of underground permanent-magnetism linear motor driving |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105464630A (en) * | 2016-01-04 | 2016-04-06 | 山东润发石油设备科技有限公司 | Screw pump directly driven through large-torque submersible motor |
| CN106761550A (en) * | 2016-12-15 | 2017-05-31 | 中国石油天然气股份有限公司 | A kind of oil immersion line motor Rodless oil extraction integrated apparatus |
| CN107939348A (en) * | 2018-01-05 | 2018-04-20 | 西南石油大学 | A kind of multistage reciprocal synergy hoisting system of electromagnetic oil-production |
| CN108258829A (en) * | 2016-12-29 | 2018-07-06 | 中国石油天然气股份有限公司 | A kind of sand control piston for oil immersion line motor |
| CN114183100A (en) * | 2022-02-16 | 2022-03-15 | 鸿旭昌石油装备有限公司 | Rodless oil extraction integrated device of submersible linear motor |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105464630A (en) * | 2016-01-04 | 2016-04-06 | 山东润发石油设备科技有限公司 | Screw pump directly driven through large-torque submersible motor |
| CN106761550A (en) * | 2016-12-15 | 2017-05-31 | 中国石油天然气股份有限公司 | A kind of oil immersion line motor Rodless oil extraction integrated apparatus |
| CN108258829A (en) * | 2016-12-29 | 2018-07-06 | 中国石油天然气股份有限公司 | A kind of sand control piston for oil immersion line motor |
| CN107939348A (en) * | 2018-01-05 | 2018-04-20 | 西南石油大学 | A kind of multistage reciprocal synergy hoisting system of electromagnetic oil-production |
| CN114183100A (en) * | 2022-02-16 | 2022-03-15 | 鸿旭昌石油装备有限公司 | Rodless oil extraction integrated device of submersible linear motor |
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| CN104632139B (en) | 2017-07-14 |
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