CN104454476A - Bridge crossing type inverted pull-drown pump - Google Patents
Bridge crossing type inverted pull-drown pump Download PDFInfo
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- CN104454476A CN104454476A CN201310416340.8A CN201310416340A CN104454476A CN 104454476 A CN104454476 A CN 104454476A CN 201310416340 A CN201310416340 A CN 201310416340A CN 104454476 A CN104454476 A CN 104454476A
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Abstract
The invention discloses a bridge crossing type inverted pull-drown pump, which is designed for eliminating the eccentric wear and improving the system efficiency by fitting a rodless oil extracting device of an underground linear motor. The pull-down pump mainly comprises an oil outlet valve, a sieve pipe, an upper outer pipe, a reducing joint, a lower outer pipe and the like, wherein a bridge type inner pipe, with the lower end connected to an upper pump cylinder, is fixed in a bridge type outer pipe; an upper plunger is arranged in the upper pump cylinder; upper and lower mobile oil inlet valves are connected into the upper plunger; and the bottom end of the lower mobile oil inlet valve is in threaded connection with a lower plunger. The pull-down pump is combined with the underground linear motor for constructing to realize the oil extraction without needing a sucker rod, so that the problem of incapability of eliminating the eccentric wear of the sucker rod in a directional well is radically solved, the zero transmission from the motor to an oil well pump is realized, the stroke loss can be eliminated, the pump efficiency and the system efficiency are improved, and the operation safety risk is reduced. The pull-down pump is a helpful exploration of transforming a traditional mechanical oil extracting mode, and has an important significance on the reduction of oil extracting costs and the improvement of benefits.
Description
Technical field
The present invention relates to a kind of bridge type and be inverted drop-down pump, belong to industrial gas oil underground operation tool technical field.
Background technique
At present, there is the intrinsic difficult problems such as the many and system effectiveness room for promotion of rod and tube partial-wear, transmission link is little in the oil production method of pumping unit rod pump.
Summary of the invention
The object of the present invention is to provide a kind of bridge type to be inverted drop-down pump, to eliminate rod and tube partial-wear, improve system effectiveness.
Concrete technology contents of the present invention is as follows:
The upper box cupling lower end internal thread of this drop-down pump connects oil-release valve cover, is provided with outlet valve and delivery valve seat in oil-release valve cover, and lower end internal thread connecting valve seat joint, outside thread connection coupling; Box cupling lower end connects upper exterior tube by screen casing, and upper exterior tube lower end internal thread connects reducer union, and reducer union lower end connects lower outer pipe by adapter; Bridge-type outer tube upper external screw thread connection coupling, lower end outside thread connects upper exterior tube; In bridge-type, pipe is fixed in bridge-type outer tube, and its lower end outside thread connects upper pump barrel; Be provided with upper plug in upper pump barrel, upper plug inwall upper and lower part step connects travelling oiling valve and lower travelling oiling valve respectively, and lower travelling oiling valve bottom is threaded lower plunger; Lower pump barrel upper external screw thread on suit lower plunger connects reducer union.
This drop-down pump is combined with down-hole linear motor constructs, and can realize without sucker rod oil production, fundamentally solves the problem of the deviating wearing between sucker rod and tube that directional well cannot be eliminated, realize " Zero-drive Chain " of motor to oil well pump, can loss of plunger stroke be eliminated, improve pump efficiency and system effectiveness, reduce job safety risk.Benefiting our pursuits of existing machinery oil production method changed by this drop-down pump, has great importance with increasing the benefit to reduction cost for oil production.
Accompanying drawing explanation
Fig. 1 is that bridge type is inverted drop-down pump superstructure schematic diagram.
Fig. 2 is that bridge type is inverted drop-down pump substructure schematic diagram.
Fig. 3 is A-A sectional view in Fig. 1.
Embodiment
Embodiment:
Referring to figs. 1 through 3, these embodiments of the invention are further illustrated:
This drop-down pump mainly comprises pipe 9 in box cupling 1, oil-release valve cover 2, outlet valve 3, delivery valve seat 4, valve base joint 5, box cupling 6, bridge-type outer tube 7, screen casing 8, bridge-type, upper exterior tube 10, upper pump barrel 11, upper travelling oiling valve 12, upper plug 13, lower travelling oiling valve 14, lower plunger 15, reducer union 16, lower pump barrel 17 and lower outer pipe 18;
Upper box cupling 1 lower end internal thread connects oil-release valve cover 2, is provided with outlet valve 3 and delivery valve seat 4 in oil-release valve cover 2, and lower end internal thread connecting valve seat joint 5, outside thread connection coupling 6.Box cupling 6 lower end connects upper exterior tube 10 by screen casing 8, and upper exterior tube 10 lower end internal thread connects reducer union 16, and reducer union 16 lower end connects lower outer pipe 19 by adapter 18.Bridge-type outer tube 7 upper external screw thread connection coupling 6, lower end outside thread connects upper exterior tube 10.In bridge-type, pipe 9 is fixed in bridge-type outer tube 7, and its lower end outside thread connects upper pump barrel 11.Be provided with upper plug 13 in upper pump barrel 11, upper plug 13 inwall upper and lower part step connects travelling oiling valve 12 and lower travelling oiling valve 14 respectively, and lower travelling oiling valve 14 bottom is threaded lower plunger 15.Lower pump barrel 17 upper external screw thread on suit lower plunger 15 connects reducer union 16.
The lower outer pipe 19 connecting downhole linear electric motor of this drop-down pump, lower plunger 15 connects motor pull bar by the crossover sub adding pin.Box cupling 1 connected pipes on drop-down pump, oil pipe upper end connects production wellhead.During real work, by operating vehicle, oil pipe, this drop-down pump and down-hole linear motor are lowered into predetermined depth in well, drive this drop-down pump to carry out work by down-hole linear motor.
During this drop-down pump up stroke, upper travelling oiling valve 12 and lower travelling oiling valve 14 are opened, and outlet valve 3 cuts out, and well liquid enters bridge-type outer tube 7 by screen casing 8, flow into lower pump barrel 17, complete feed liquor through upper travelling oiling valve 12 and lower travelling oiling valve 14.During down stroke, upper travelling oiling valve 12 and lower travelling oiling valve 14 are closed, and outlet valve 3 is opened, and well liquid enters pipe 9 in bridge-type by lower pump barrel 17, through outlet valve 3, completes fluid.
Claims (2)
1. bridge type is inverted a drop-down pump, it is characterized in that:
Upper box cupling (1) the lower end internal thread of this drop-down pump connects oil-release valve cover (2), outlet valve (3) and delivery valve seat (4) is provided with in oil-release valve cover (2), and lower end internal thread connecting valve seat joint (5), outside thread connection coupling (6); Box cupling (6) lower end connects upper exterior tube (10) by screen casing (8), upper exterior tube (10) lower end internal thread connects reducer union (16), and reducer union (16) lower end connects lower outer pipe (19) by adapter (18); Bridge-type outer tube (7) upper external screw thread connection coupling (6), lower end outside thread connects upper exterior tube (10); In bridge-type, pipe (9) is fixed in bridge-type outer tube (7), and its lower end outside thread connects upper pump barrel (11); Upper plug (13) is provided with in upper pump barrel (11), upper plug (13) inwall upper and lower part step connects travelling oiling valve (12) and lower travelling oiling valve (14) respectively, and lower travelling oiling valve (14) bottom is threaded lower plunger (15); Lower pump barrel (17) upper external screw thread on suit lower plunger (15) connects reducer union (16).
2. bridge type according to claim 1 is inverted drop-down pump, when it is characterized in that this drop-down pump up stroke, upper travelling oiling valve (12) and lower travelling oiling valve (14) are opened, outlet valve (3) cuts out, well liquid enters bridge-type outer tube (7) by screen casing (8), flow into lower pump barrel (17) through upper travelling oiling valve (12) and lower travelling oiling valve (14), complete feed liquor; During down stroke, upper travelling oiling valve (12) and lower travelling oiling valve (14) are closed, and outlet valve (3) is opened, and well liquid enters pipe (9) in bridge-type by lower pump barrel (17), through outlet valve (3), complete fluid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310416340.8A CN104454476B (en) | 2013-09-13 | 2013-09-13 | Bridge type is inverted drop-down pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310416340.8A CN104454476B (en) | 2013-09-13 | 2013-09-13 | Bridge type is inverted drop-down pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104454476A true CN104454476A (en) | 2015-03-25 |
| CN104454476B CN104454476B (en) | 2016-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310416340.8A Active CN104454476B (en) | 2013-09-13 | 2013-09-13 | Bridge type is inverted drop-down pump |
Country Status (1)
| Country | Link |
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| CN (1) | CN104454476B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2547906Y (en) * | 2002-05-22 | 2003-04-30 | 大庆油田有限责任公司 | Movable-barrel sand-preventing oil-well pump |
| US20050063848A1 (en) * | 2001-06-13 | 2005-03-24 | Weatherford/Lamb, Inc. | Double-acting reciprocating downhole pump |
| CN2773345Y (en) * | 2005-04-13 | 2006-04-19 | 大庆油田有限责任公司 | Plunger-type oil-well pump with direct underground dynamic drive |
| CN2823598Y (en) * | 2005-07-18 | 2006-10-04 | 中国石化胜利油田有限公司采油工艺研究院 | Balance type linear motor oil pumping device for downhole |
| CN203516026U (en) * | 2013-09-13 | 2014-04-02 | 中国石油天然气股份有限公司 | Gap bridge type inversed pull-down pump |
-
2013
- 2013-09-13 CN CN201310416340.8A patent/CN104454476B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050063848A1 (en) * | 2001-06-13 | 2005-03-24 | Weatherford/Lamb, Inc. | Double-acting reciprocating downhole pump |
| CN2547906Y (en) * | 2002-05-22 | 2003-04-30 | 大庆油田有限责任公司 | Movable-barrel sand-preventing oil-well pump |
| CN2773345Y (en) * | 2005-04-13 | 2006-04-19 | 大庆油田有限责任公司 | Plunger-type oil-well pump with direct underground dynamic drive |
| CN2823598Y (en) * | 2005-07-18 | 2006-10-04 | 中国石化胜利油田有限公司采油工艺研究院 | Balance type linear motor oil pumping device for downhole |
| CN203516026U (en) * | 2013-09-13 | 2014-04-02 | 中国石油天然气股份有限公司 | Gap bridge type inversed pull-down pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104454476B (en) | 2016-05-11 |
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