CN101382131B - Pressure testing downhole oil production screw pump - Google Patents
Pressure testing downhole oil production screw pump Download PDFInfo
- Publication number
- CN101382131B CN101382131B CN200810157855XA CN200810157855A CN101382131B CN 101382131 B CN101382131 B CN 101382131B CN 200810157855X A CN200810157855X A CN 200810157855XA CN 200810157855 A CN200810157855 A CN 200810157855A CN 101382131 B CN101382131 B CN 101382131B
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- screw pump
- pump
- pressure testing
- valve
- liquid
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Abstract
The invention discloses a pressure-testing underground oil extraction screw pump, which comprise a check valve, a screw pump and a pressure test valve, wherein the lower part of an upper connector of the pump is connected with the upper part of the screw pump; the lower part of the screw pump is connected with the pressure test valve; the upper connector of the pump is provided with a side hole; the check valve is arranged under the side hole; a bleeder tube is parallelly arranged outside the screw pump; and the upper end of the bleeder tube is connected with the lower part of the check valve, and is connected with a side hole of the pressure test valve. The pressure-testing underground oil extraction screw pump can carry out pressure test to a flow string of the screw pump, and can also ensure that a rotor of the screw pump can be smoothly placed in a stator of the screw pump. Through test of the pressure in flow string of the screw pump, the pressure-testing underground oil extraction screw pump can eliminate rework caused by the leaking of oil pipes, ensure the operation quality, shorten the downtime of oil wells, reduce the production loss and decrease the operation cost.
Description
Technical field:
The present invention is the screw pump of oil field oil recovery usefulness, but particularly a kind of pressure testing downhole oil production screw pump.
Background technique:
In the screw pump oil production tubing string, one-way valve can not be installed in the screw pump bottom, because if after one-way valve has been installed, the rotor of screw pump be lowered to screw pump due to the time, liquid between one-way valve and the rotor bottom can not be discharged, and rotor occurs and can not enter the interior problem of stator smoothly.So, one-way valve can not be installed in the screw pump bottom, and therefore, present screw pump oil production tubing string can not pressure testing, whether can't find oil pipe misses, do not guarantee operation quality, cause adopt behind some screw pump oil production well operations not fuel-displaced, the operation of need doing over again, increase the oil well off-time, increase the activity duration, reduce well oil output, increase operating cost.Chinese patent application: 03263839.6 screw pump oil production tubing string pressure testing device, can be to the pressure testing of screw pump oil production tubing string, but this device must could use with the support type packer assembly is supporting, and the support type packer assembly causes drilling pipe bending easily, causes the oil pipe wearing and tearing.Chinese patent application: 200520087208.8 screw pumps, can be to the pressure testing of screw pump oil production tubing string, but this screw pump needs an outer tube also longer than screw pump, and Master Cost is many.
Summary of the invention:
But the objective of the invention is to design a kind of pressure testing downhole oil production screw pump, make it can be to the pressure testing of screw pump oil production tubing string, can guarantee that again screw pump rotor is lowered in the screw pump stator smoothly, by to the pressure testing of screw pump oil production tubing string, the operation that discharge oil pipe leakage in time causes is done over again, guarantee operation quality, reduce the oil well loss.
The object of the present invention is achieved like this: one-way valve, screw pump, pressure testing valve are arranged, pump upper connection bottom connects with screw pump top, the screw pump bottom connects with the pressure testing valve, the pump upper connection has side opening, side opening is installed one-way valve down, parallel installation liquid-discharging tube outside screw pump, and the liquid-discharging tube upper end connects with the one-way valve bottom, the liquid-discharging tube upper end connects with pressure testing valve side opening, and liquid-discharging tube is a blank pipe.
The invention has the beneficial effects as follows: can carry out pressure testing the screw pump oil production tubing string, can guarantee that again screw pump rotor is lowered in the screw pump stator smoothly, by to the pressure testing of screw pump oil production tubing string, can discharge the operation that oil pipe leakage causes does over again, guarantee operation quality, the oil well off-time is short, and production loss is few, and operating cost is low.
Description of drawings
Accompanying drawing is the erection drawing of the embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are described.
Embodiments of the invention are made up of pump upper connection 1, one-way valve 2, screw pump 3, liquid-discharging tube 4, pressure testing valve 5.Pump upper connection 1 bottom connects with screw pump 3 tops, screw pump 3 bottoms connect with pressure testing valve 5, pump upper connection 1 has side opening 6, side opening is installed one-way valve 26 times, parallel installation liquid-discharging tube 4 outside screw pump 3, liquid-discharging tube 4 upper ends connect with one-way valve 2 bottoms, and liquid-discharging tube 4 upper ends connect with pressure testing valve 5 side openings, and liquid-discharging tube 4 is a blank pipe.
During pressure testing, inject highly pressurised liquid in the oil pipe from the pump, thereby the oil pipe on the pressure testing valve 5 is carried out pressure testing, check its sealing.
Fashionable under the rotor of screw pump 3, liquid between the rotor bottom of pressure testing valve 5 and screw pump 3 is in liquid-discharging tube 4 drains into pump upper connection 1, because the rotor bottom dawn of screw pump 3 enters in the stator of screw pump 3, liquid between the rotor bottom of pressure testing valve 5 and screw pump 3 is incompressible, if there is not discharge route, the rotor of screw pump 3 can't continue to be lowered to.The effect of one-way valve 2 is to prevent in the production process that crude oil on the pump from flowing backward to the space between pressure testing valve 5 and the screw pump 3, because the crude oil on the pump is the crude oil through screw pump 3 extraction, if will lost units, even can cause not produce oil of oil well so flow backward to behind the space between pressure testing valve 5 and the screw pump.
During oil recovery, in the well crude oil through pressure testing valve 5 by the screw pump extraction.
The present invention can only be 7 " use in the sleeve pipe,, can not descend in small casing because after the external parallel of pump was installed liquid-discharging tube, the profile of pump increased, because present 7 " cased well is a lot, so the present invention has bigger Applicable scope.
Claims (1)
1. but pressure testing downhole oil production screw pump, one-way valve (2) is arranged, screw pump (3), pressure testing valve (5), it is characterized in that: pump upper connection (1) bottom connects with screw pump (3) top, screw pump (3) bottom connects with pressure testing valve (5), pump upper connection (1) has side opening (6), side opening (6) is installed one-way valve (2) down, parallel installation liquid-discharging tube (4) outside screw pump (3), liquid-discharging tube (4) upper end connects with one-way valve (2) bottom, liquid-discharging tube (4) lower end connects with pressure testing valve (5) side opening, liquid-discharging tube (4) is a blank pipe, fashionable under the rotor of screw pump (3), liquid between the rotor bottom of pressure testing valve (5) and screw pump (3) is in liquid-discharging tube (4) drains into pump upper connection (1), because the rotor bottom of screw pump (3) in a single day enters in the stator of screw pump (3), liquid between the rotor bottom of pressure testing valve (5) and screw pump (3) is incompressible, if there is not discharge route, the rotor of screw pump (3) can't continue to be lowered to, the effect of one-way valve (2) is to prevent in the production process that crude oil on the pump from flowing backward to the space between pressure testing valve (5) and the screw pump (3), because the crude oil on the pump is the crude oil through screw pump (3) extraction, if will lost units, even can cause not produce oil of oil well so flow backward to behind the space between pressure testing valve (5) and the screw pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810157855XA CN101382131B (en) | 2008-10-15 | 2008-10-15 | Pressure testing downhole oil production screw pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810157855XA CN101382131B (en) | 2008-10-15 | 2008-10-15 | Pressure testing downhole oil production screw pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101382131A CN101382131A (en) | 2009-03-11 |
| CN101382131B true CN101382131B (en) | 2010-06-16 |
Family
ID=40462136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810157855XA Expired - Fee Related CN101382131B (en) | 2008-10-15 | 2008-10-15 | Pressure testing downhole oil production screw pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101382131B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114183132A (en) * | 2021-12-03 | 2022-03-15 | 中国石油天然气股份有限公司 | Pressure testing device and crude oil collecting device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0561494A2 (en) * | 1992-02-17 | 1993-09-22 | Fluid Holdings Limited | Moineau-type pump |
| CN2237712Y (en) * | 1995-05-26 | 1996-10-16 | 大庆石油管理局 | Suction matching device for hollow rod rotary bolt pump sleeve |
| DE10238456C1 (en) * | 2002-08-22 | 2003-10-02 | Leistritz Ag | Pump, for conveying oil from deep boreholes, comprises screw spindle pump driven by submersible motor |
| CN2628708Y (en) * | 2003-06-04 | 2004-07-28 | 胜利油田银星技术开发公司 | Screw pump oil production pipe column pressure test apparatus |
| CN2816415Y (en) * | 2005-09-05 | 2006-09-13 | 于海涛 | Screw pump |
| US7214036B2 (en) * | 2001-09-27 | 2007-05-08 | Taiko Kikai Industries Co., Ltd. | Screw type vacuum pump |
| CN201288655Y (en) * | 2008-10-15 | 2009-08-12 | 马子奇 | Pressure testing downhole oil production screw pump |
-
2008
- 2008-10-15 CN CN200810157855XA patent/CN101382131B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0561494A2 (en) * | 1992-02-17 | 1993-09-22 | Fluid Holdings Limited | Moineau-type pump |
| CN2237712Y (en) * | 1995-05-26 | 1996-10-16 | 大庆石油管理局 | Suction matching device for hollow rod rotary bolt pump sleeve |
| US7214036B2 (en) * | 2001-09-27 | 2007-05-08 | Taiko Kikai Industries Co., Ltd. | Screw type vacuum pump |
| DE10238456C1 (en) * | 2002-08-22 | 2003-10-02 | Leistritz Ag | Pump, for conveying oil from deep boreholes, comprises screw spindle pump driven by submersible motor |
| CN2628708Y (en) * | 2003-06-04 | 2004-07-28 | 胜利油田银星技术开发公司 | Screw pump oil production pipe column pressure test apparatus |
| CN2816415Y (en) * | 2005-09-05 | 2006-09-13 | 于海涛 | Screw pump |
| CN201288655Y (en) * | 2008-10-15 | 2009-08-12 | 马子奇 | Pressure testing downhole oil production screw pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101382131A (en) | 2009-03-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100616 Termination date: 20121015 |