CN1844667A - Down-hole linear motor and hydraulic cylinder driven capsule pump with balance weight for oil well - Google Patents
Down-hole linear motor and hydraulic cylinder driven capsule pump with balance weight for oil well Download PDFInfo
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- CN1844667A CN1844667A CN 200610043707 CN200610043707A CN1844667A CN 1844667 A CN1844667 A CN 1844667A CN 200610043707 CN200610043707 CN 200610043707 CN 200610043707 A CN200610043707 A CN 200610043707A CN 1844667 A CN1844667 A CN 1844667A
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Abstract
The invention discloses an under-well weight-distributed straight motor hydraulic capsule oil pump, which uses straight motor rotor to move reciprocated to drive the plunger to move reciprocated to discharge-adsorb hydraulic oil to expand and contract the capsule of capsule pump, to lift the well liquid to the ground. It is formed by a straight motor, a hydraulic cylinder, a capsule pump, a balance block and a controller. Wherein, the upper end of straight motor rotor is connected to the plunger of hydraulic cylinder, while the lower end is connected to the balance block; the hydraulic cylinder is connected to the straight motor and the capsule pump; the lower end of capsule pump is mounted with a oil inlet valve, while the upper end is mounted with a oil outlet valve; the capsule can completely separate the well liquid and the motion couple, to avoid mechanical foreign matters and corrosive matters of well liquid to corrode the motion couple, therefore, it can prolong the service life of pump. The ground controller can step-less adjust stroke, times and other working parameters to meet the demand of production.
Description
Technical field:
The present invention relates to a kind of oil exploration equipment, be mainly used in the oil field down-hole mechanical and recover the oil, be applicable to general conventional oil well and contain the special oil well of sand grains, corrosivity well liquid.
Background technique:
Sucker rod pumping equipment occupies quite great proportion in oil production system, the maximal efficiency desired value of rod pumping system is less than 40% at present, and measured value has only about 20%.Traditional used ground of electric rotating machine sucker rod pumping mode and underground equipment are various, energy loss is big, cause ground system work not steady with down-hole sucker rod, the pump load alternate of pumping unit joint work, aggravate the reactive power consumption of power system, caused the fallback of oil production system, caused huge energy waste, and because well liquid contacts with movement parts, wearing and tearing, seriously corroded between plunger and pump barrel, pump detection period is short, particularly is not suitable for height and contains sand drain.
Rodless pump---submersible electric pump relies on the high-speed rotary motor in shaft bottom directly to drive multistage centrifugal pump, and well liquid is lifted to ground.But because the motor speed height, discharge capacity is big, is not suitable for the middle stripper well that dominates, and pump efficiency is low, centrifugal blade contact well liquid, damages soon, and application area is subjected to great limitation.
Summary of the invention:
The objective of the invention is to provide a kind of down-hole linear motor hydraulic driving capsule oil well pump, well liquid and kinematic pair are isolated, the sand grains in the prevention well liquid and the wearing and tearing and the corrosion of corrosive goods confrontation kinematic pair with balancer weight.
The present invention mainly is made up of linear electric motor, oil hydraulic cylinder, capsule pump, equilibrium block and control gear.The mover upper end of linear electric motor is connected with the plunger of oil hydraulic cylinder, and the lower end is connected with equilibrium block.The capsule pump upper end is connected with oil pipe, and the lower end is connected with oil hydraulic cylinder, and the linear electric motor upper end is connected with oil hydraulic cylinder, and the lower end is connected with the equilibrium block chamber.In the chamber, lower end of capsule pump oiling valve is housed, outlet valve is equipped with in the upper end.When upstroke, the hydraulic oil of capsule outside flows back in the hydraulic cylinder, the capsule of capsule pump expands, oiling valve is opened, outlet valve cuts out, well liquid enters the capsule inner chamber, and during down stroke, the hydraulic oil in the oil cylinder flows into the capsule outside, capsule shrinks, oiling valve cuts out, and outlet valve is opened, and the well liquid in the capsule enters oil pipe and gives rise to ground, the equilibrium block that the linear motor rotor lower end connects, discharge its potential energy during down stroke hydraulic oil is done work, the mover of linear electric motor drives the equilibrium block rising and makes its potential energy increase during upstroke, and the weight of equilibrium block is to guarantee up-down stroke thrust equates to be principle.But electric control equipment step-less adjustment stroke, jig frequency and other running parameter can be realized electromechanical integration and control automatically.
Description of drawings:
Fig. 1 is the structural representation of the down-hole linear motor hydraulic driving capsule oil well pump of band balancer weight of the present invention.
Among the figure, the 1-plug; The 2-shell; The 3-equilibrium block; The 4-stator; The 5-mover; The 6-sealing case; The 7-cylinder body; The 8-plunger; The 9-oiling valve; The 10-capsule; 11-hydraulic oil; The 12-outlet valve; The 13-control gear.
Embodiment:
Describe structure of the present invention in detail below in conjunction with accompanying drawing.
Among Fig. 1, the down-hole linear motor hydraulic driving capsule oil well pump of band balancer weight is connected with oil pipe to descend in well, and is connected with the control gear 13 that is contained in ground by cable.The upper end of the mover 5 of linear electric motor is connected with the plunger 8 of oil hydraulic cylinder, and the lower end is connected with equilibrium block 3, and the shell 2 of capsule pump, oil hydraulic cylinder, linear electric motor links together, and the lower end of equilibrium block chamber prevents that with plug 1 sealing well liquid from entering.In the lower end of capsule pump oiling valve 9 is housed, outlet valve 12 is equipped with in the upper end, the inner chamber of the stator 4 of linear electric motor is equipped with mover 5, mover 5 can freely pump at the inner chamber of stator 4, in the cylinder body 7 of oil hydraulic cylinder plunger 8 is housed, plunger 8 can freely pump in cylinder body 7, between cylinder body 7 and the stator 4 sealing case 6 is housed, to prevent hydraulic oil 11 leakages.During upstroke, capsule 10 outer hydraulic oil 11 flow back to the inner chamber of cylinder body 7, and the capsule 10 of capsule pump expands, and oiling valve 9 is opened, outlet valve 12 cuts out, well liquid enters capsule 10 inner chambers, and during down stroke, the hydraulic oil 11 in the cylinder body 7 flows into capsule 10 outsides, capsule 10 shrinks, oiling valve 9 cuts out, and outlet valve 12 is opened, and the well liquid in the capsule enters oil pipe and gives rise to ground.
The down-hole linear motor hydraulic driving capsule oil well pump of band balancer weight of the present invention, have simple and reliable for structure, make easy processing, cost low, transfer ginseng easily, characteristics such as high, the economize on electricity of transmission efficiency, can realize electromechanical integration, be specially adapted to the oil well of platform well group and high sand output well and other different well ' s conditions, be significant innovation, have broad application prospects traditional oil production method.
Claims (3)
1. one kind drives the cylinder plunger discharge-suction hydraulic oil that moves reciprocatingly by the down-hole linear motor mover, force the capsule breathing of capsule pump, well liquid is given rise to the down-hole linear motor hydraulic driving capsule oil well pump of the band balancer weight on ground, it is mainly by linear electric motor, capsule pump, oil hydraulic cylinder, equilibrium block and control gear are formed, it is characterized in that: the capsule pump upper end is connected with oil pipe, the lower end is connected with oil hydraulic cylinder, the linear electric motor upper end is connected with oil hydraulic cylinder, the lower end is connected with the equilibrium block chamber, the mover upper end of linear electric motor is connected with the plunger of oil hydraulic cylinder, the lower end is connected with equilibrium block, in the chamber, lower end of capsule pump, oiling valve is housed, outlet valve is equipped with in the upper end, and linear motor rotor drives cylinder plunger and pumps, and the capsule breathing that drives capsule pump by hydraulic oil gives rise to ground to well liquid.
2. the down-hole linear motor hydraulic driving capsule oil well pump of band balancer weight according to claim 1, it is characterized in that: mover is a hollow stem, goes up and plunger upper part UNICOM, communicates with the equilibrium block chamber down, below, equilibrium block chamber is sealed with plug.
3. the down-hole linear motor hydraulic driving capsule oil well pump of band balancer weight according to claim 1, it is characterized in that: capsule obstruct well liquid contacts with linear electric motor and oil hydraulic cylinder internal motion component, avoided linear electric motor and oil hydraulic cylinder internal motion component corroded by sand grains wearing and tearing and harmful matter, the working life of prolongation pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610043707 CN1844667A (en) | 2006-04-26 | 2006-04-26 | Down-hole linear motor and hydraulic cylinder driven capsule pump with balance weight for oil well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610043707 CN1844667A (en) | 2006-04-26 | 2006-04-26 | Down-hole linear motor and hydraulic cylinder driven capsule pump with balance weight for oil well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1844667A true CN1844667A (en) | 2006-10-11 |
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ID=37063622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610043707 Pending CN1844667A (en) | 2006-04-26 | 2006-04-26 | Down-hole linear motor and hydraulic cylinder driven capsule pump with balance weight for oil well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1844667A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104019019A (en) * | 2014-05-27 | 2014-09-03 | 许一星 | Energy storage type linear motor capsule pump |
| CN104329244A (en) * | 2014-11-10 | 2015-02-04 | 中国石油天然气股份有限公司 | Capsule combination pump |
| CN111287714A (en) * | 2018-12-10 | 2020-06-16 | 中国石油化工股份有限公司 | Device and method for lifting fluid in well |
| CN111441959A (en) * | 2020-04-02 | 2020-07-24 | 明光市留香泵业有限公司 | Auxiliary device capable of enhancing suction capacity of sand suction pump |
-
2006
- 2006-04-26 CN CN 200610043707 patent/CN1844667A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104019019A (en) * | 2014-05-27 | 2014-09-03 | 许一星 | Energy storage type linear motor capsule pump |
| CN104019019B (en) * | 2014-05-27 | 2016-12-07 | 许一星 | Energy storage type linear electric motors capsule pump |
| CN106523334A (en) * | 2014-05-27 | 2017-03-22 | 张勇 | Oil field downhole mechanical oil extraction device |
| CN104329244A (en) * | 2014-11-10 | 2015-02-04 | 中国石油天然气股份有限公司 | Capsule combination pump |
| CN111287714A (en) * | 2018-12-10 | 2020-06-16 | 中国石油化工股份有限公司 | Device and method for lifting fluid in well |
| CN111287714B (en) * | 2018-12-10 | 2023-12-01 | 中国石油化工股份有限公司 | Lifting device and method for well fluid |
| CN111441959A (en) * | 2020-04-02 | 2020-07-24 | 明光市留香泵业有限公司 | Auxiliary device capable of enhancing suction capacity of sand suction pump |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |