CN102297127A - Self-discharge check valve special for oil extraction rodless pump of high sand content oil well - Google Patents
Self-discharge check valve special for oil extraction rodless pump of high sand content oil well Download PDFInfo
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- CN102297127A CN102297127A CN2010102083890A CN201010208389A CN102297127A CN 102297127 A CN102297127 A CN 102297127A CN 2010102083890 A CN2010102083890 A CN 2010102083890A CN 201010208389 A CN201010208389 A CN 201010208389A CN 102297127 A CN102297127 A CN 102297127A
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Abstract
The invention relates to a self-discharge check valve special for an oil extraction rodless pump of a high sand content oil well, which mainly solves the problem of difficulty in restarting of a unit due to sand accumulation at an outlet of a tubing string existing in the conventional valve body in the case of stop of an underground oil extraction rodless pump unit. The check valve is characterized in that: the wall of the middle upper part of the valve body is provided with an external oil discharge hole; the middle part of the inner wall is provided with a positioning step; a valve core assembly which can move up and down is arranged in the valve body; the upper end of the valve core assembly is provided with an oil discharge hole component, and the lower end of the valve core assembly is provided with an oil inlet hole component; a spring is arranged in an annular cavity of the valve core assembly and the valve body; when the unit is started, the valve core moves upwards, and the oil inlet hole is opened and is communicated with the tubing string; and when the unit is stopped, the valve core assembly moves downwards under the action of the spring, an oil inlet passage is closed, meanwhile, the oil discharge hole on the upper part is opened, accumulated sand in the tubing string is automatically discharged into an annular space of an oil sleeve. The valve can realize two major functions, namely liquid one-way flow and automatic oil discharge, so that the accumulated sand in a tubing can be fully discharged when the underground oil extraction rodless pump unit is stopped, and it is convenient to restart the unit.
Description
Technical field
The present invention relates to the valve body in the used lift device in the oil recovery field, oil field, especially highly contain the special use of sand well recovery rodless pump from the earial drainage one-way valve.
Background technique
Along with deepening continuously of petroleum production, it is complicated gradually to face various geological conditions, and supporting with it oil recovery technique is also in development constantly, to adapt to the needs of different geological condition exploitations.Present down-hole oil production rodless pump unit; as submersible electric pump, screw submerged pump etc.; general outlet is connected with one-way valve and two parts of oil drain valve; the one-way valve of pump discharge is opened and is made well liquid give rise to ground during unit starting; utilizing during compressor emergency shutdown gives up breaks the oil drain valve spool and makes that well liquid goes out from the draining orifice flow in the tubing string, and two kinds of valves work independently.Contain in the sand drain when unit is operated in, during compressor emergency shutdown, the sand grains that oil pipe includes in the sand drain liquid can be deposited in the oil pipe on one-way valve top, to making unit open the machine difficulty once more; Be operated in thick oil well and work as unit, shut down when requiring draining, because the thick oil well fluid viscosity is bigger, the whereabouts resistance of giving up is bigger to making, and rate of descent is slow, and it is disconnected that the draining spool is not easy to pound, and the well liquid in the oil pipe can not release, and can't play well.
Summary of the invention
In order to solve existing one-way valve and oil drain valve when the down-hole oil production rodless pump compressor emergency shutdown, sand is amassed in the tubing string outlet port, makes unit open the problem of machine difficulty once more, the invention provides a kind ofly highly to contain the special use of sand well recovery rodless pump from the earial drainage one-way valve.This valve can be realized two big functions of liquid one-way flow and automatic draining, and the long-pending sand when making down-hole oil production rodless pump compressor emergency shutdown in the oil pipe is released fully, makes things convenient for unit to open machine once more.
Technological scheme of the present invention is: a kind ofly highly contain the special use of sand well recovery rodless pump from the earial drainage one-way valve, comprise valve body, the lower end jointing of valve body, the endoporus of valve body and joint is equipped with Spool assembly moving up and down, wherein, have the oilhole that leaks on the middle and upper part wall of described valve body, the inwall middle part is provided with positioning step; Described Spool assembly is made up of draining hole parts, Sealing, rotary valve, link, location short circuit and oil inlet hole parts, wherein the upper end of link connects draining hole parts, the upper-end surface of link is positioned at the center hole and the hinged rotary valve of draining hole parts, the lower end of link connects the location short circuit, and the location short circuit connects the oil inlet hole parts; Have the internal drainage hole on the parts of described draining hole, have oil inlet hole on the oil inlet hole parts and reach oil inlet hole down, the epimere external cylindrical surface of location short circuit and the external cylindrical surface of link are isometrical, and there is circumferential support level the lower end of location short circuit, and axial gap distributes on the support level; Be equipped with spring between the axial ring cavity of positioning step on support level and the valve body; Form ring cavity between the lower end surface of the endoporus of the external cylindrical surface of described oil inlet hole parts, joint and valve body lower end and location short circuit.
The oilhole that leaks on the described valve body, the internal drainage hole on the Spool assembly and last oil inlet hole and following oil inlet hole are radial equipartition; The axial gap that distributes on the support level on the short circuit of location is a radial equipartition; Between described draining hole parts and link, between link and location short circuit, be between location short circuit and oil inlet hole parts and be threaded; Between valve body and draining hole parts and link, between joint and oil inlet hole parts, the lower end and the joint screw thread connecting end of valve body all be equipped with Sealing.
The invention has the beneficial effects as follows: this down-hole oil production rodless pump is used from the earial drainage one-way valve and is reached the Spool assembly of oil inlet hole down owing to be provided with the draining hole in valve body, be equipped with spring between valve body and Spool assembly, by the promotion of well liquid and the effect of spring force spool is moved up and down in valve body, during unit starting, down-hole fluid upwards flows, liquid behind the compressor emergency shutdown in the tubing string can access effectively and release, realize two big functions of liquid one-way flow and automatic draining, thereby enlarged the application area of down-hole oil production rodless pump unit, improved down-hole oil production rodless pump unit conformability, unit is applied to contains in the sand drain, do not produce the sand plug phenomenon; Be applied in the thick oil well, solve the draining spool and be not easy breakage problem; Be applied in inclined shaft and the horizontal well, the liquid behind the compressor emergency shutdown in the tubing string can access effectively and release, and has improved one-way valve and oil drain valve switch effect, thereby has reduced the inspection pump frequency, also with regard to the corresponding cost for oil production that reduced; And down-hole oil production rodless pump unit is when opening machine continuously, and starting power is little, is easy to the machine that opens continuously of unit.Characteristics that this valve has one-way valve and the oil drain valve switch is effective and the long-pending sand of oil pipe can effectively release thus.
Description of drawings
Fig. 1 is the structure and the oil-feed view of this valve;
Fig. 2 is the structural representation of sequence number 6 Spool assemblies among Fig. 1;
Fig. 3 is this valve draining view.
Fig. 4 is the A-A-sectional view among Fig. 3;
Fig. 5 is a B-B sectional view among Fig. 2.
1-valve body among the figure, 3-rotary valve, 4-internal drainage hole, the 5-oilhole that leaks, the 6-Spool assembly, 7-spring, the last oil inlet hole of 8-, 9-joint, oil inlet hole under the 10-, 11-spool runner, 12-sealing surface, the 13-locating face, 15-positioning step, 16-draining hole parts, the 17-link, 18-locatees short circuit, 19-support level, 20-oil inlet hole parts, 21-ring cavity, 22-gap.
Embodiment
The present invention will be further described below in conjunction with accompanying drawing:
Extremely shown in Figure 5 by Fig. 1, this height contains the special use of sand well recovery rodless pump and mainly comprises valve body 1, joint 9, Spool assembly 6, spring 7 and Sealing from the earial drainage one-way valve, wherein, the lower end thread connecting joint 9 of valve body 1, the hole of valve body 1 and joint 9 is built-in with Spool assembly 6 moving up and down; Have the oilhole 5 that leaks on the middle and upper part wall of described valve body 1, the inwall middle part is provided with the positioning step 15 into spring 7 location, as shown in Figure 1; And described Spool assembly 6 is made up of draining hole parts 16, link 17, location short circuit 18 and oil inlet hole parts 20 and rotary valve 3, the upper end of link 17 draining hole parts 16 that are threaded wherein, the lower end is threaded and locatees short circuit 18, the location short circuit 18 oil inlet hole parts 20 that are threaded, and the cylndrical surface of the epimere external cylindrical surface of location short circuit 18 and link 17 is isometrical, there is circumferential support level 19 lower end of location short circuit 18, circumferential uniform axial gap 22 on the support level 19; Draining hole parts 16, link 17, oil inlet hole parts 20 form spool runner 11; The upper-end surface of described link 17 is positioned at the center hole of draining hole parts 16, and hinged rotary valve 3; Have internal drainage hole 4 on the draining hole parts 16, oil inlet hole parts 20 have oil inlet hole 8 and reach oil inlet hole 10 down, as shown in Figure 2; Form ring cavity 21 between the lower end surface of the endoporus of the external cylindrical surface of oil inlet hole parts 20, joint 9 endoporus and valve body 1 lower end and location short circuit 18, make down 11 of oil inlet hole 10 and last oil inlet hole 8 and spool runners unimpeded; Be equipped with spring 7 in the formed annular chamber of inwall by the cylinder of the positioning step 15 at the support level 19 of location on the short circuit 18, valve body 1 middle part, spool 6 and valve body 1, be used for moving down of Spool assembly 6 and reset, close oil inlet passage.
For oil-feed and draining smooth and easy, the oilhole 5 that leaks on the valve body 1, the internal drainage hole on the Spool assembly 64 and go up oil inlet hole 8 and down oil inlet hole 10 be radially direct, as shown in Figure 4.The axial gap 22 that distributes on the circumferential support level 19 of location on the short circuit 18, and axial gap 22 radial equipartitions, as shown in Figure 5, the sand liquid in the discharge side smoothly when making spring 7 compressions.In order to guarantee the sealability of one-way valve, draining hole parts 16 on valve body 1 and the Spool assembly 6 and 20 of oil inlet hole parts on link 17, joint 9 and the Spool assembly 6, the lower end of valve body 1 and the threaded ends of joint 9 all are equipped with Sealing, it is reached do not have leakage, pump does not have headloss, and does not have the generation of sand card phenomenon.The hinged rotary valve 3 in link 17 upper-end surfaces in the Spool assembly 6 can or be closed spool runner 11 according to the opened by pressure of spool runner 11 inner fluids, the pressure of spool runner 11 internal upper parts is greater than the pressure of bottom during draining, rotary valve 3 is closed spool runner 11, the liquid of spool runner 11 internal upper parts is all released by the spool internal drainage hole 4 and the oilhole 5 that leaks, making does not have long-pending sand in the tubing string, make things convenient for the machine that opens once more of pump.
Should be installed in down-hole oil production rodless pump unit outlet port from the earial drainage one-way valve, upper and lower end is connected with oil pipe respectively, when down-hole oil production rodless pump unit starting, the well liquid of pump discharge promotes to move on the Spool assembly 6, communicate with ring cavity 21 and open to bottom oil inlet hole 10, well liquid is by the bottom oil inlet hole 10 in the Spool assembly 6, through ring cavity 21, enter in the spool runner 11 in the Spool assembly 6 by top oil inlet hole 8 again, the rotary valve 3 that liquid promotes Spool assembly 6 internal upper parts is once more opened it, enter then in the oil pipe, given rise to ground by pump by oil pipe; Before well liquid enters spool runner 11, valve body leak oilhole 5 by on the sealing surface 12 of the Spool assembly 6 that moves seal and close, well liquid by the spool runner 11 of valve body, enters in the oil pipe down-hole oil production rodless pump unit proper functioning smoothly.When down-hole oil production rodless pump compressor emergency shutdown; under the elastic force effect of the well liquid in oil pipe and the deadweight of spool 6 and spring 7; Spool assembly 6 is fallen; rotary valve 3 is closed simultaneously; when spool 6 drops to the lower end surface of location short circuit 18 when contacting with the upper end locating face 13 of joint 9; the oilhole 5 that leaks of valve body 1 communicates with the internal drainage hole, top 4 of Spool assembly 6; the oilhole 5 that leaks of valve body 1 is opened; oil inlet hole 10 and 21 inwalls by joint 9 of ring cavity of Spool assembly 6 are sealed simultaneously; rotary valve 3 is closed downwards simultaneously; well liquid is ended by Spool assembly 6 and rotary valve 3; well liquid in the spool runner 11 in time releases from the internal drainage hole 4 of Spool assembly 6 and the oilhole 5 that leaks of valve body 1; enter oil sets annular space, as shown in Figure 3.
Because it is the elastic force that utilizes spring that this valve adopts spool to fall after rise, make that to be applied to the earial drainage effect of inclined shaft and horizontal well from the earial drainage one-way valve better, can realize the one-way flow of well liquid and two big functions of automatic draining, and enlarged the application area of down-hole oil production rodless pump unit, improved down-hole oil production rodless pump unit conformability.Be applied to and contain in the sand drain, make the outlet of down-hole oil production rodless pump unit not produce sand plug; Be applied in the thick oil well, solved because of the well fluid viscosity causes the falling speed of giving up slow greatly, the impact force of giving up deficiency is so that the problem that oil drain valve moves down; When this valve opened machine continuously at unit, starting power was little, and it is low to consume energy, and is easy to continuous startup.
Claims (5)
1. one kind high contains the special use of sand well recovery rodless pump from the earial drainage one-way valve, comprise valve body (1), the lower end jointing (9) of valve body (1), the endoporus of valve body (1) and joint (9) is equipped with Spool assembly moving up and down (6), it is characterized in that: have the oilhole that leaks (5) on the middle and upper part wall of described valve body (1), the inwall middle part is provided with positioning step (15); Described Spool assembly (6) is made up of draining hole parts (16), Sealing, rotary valve (3), link (17), location short circuit (18) and oil inlet hole parts (20), wherein the upper end of link (17) connects draining hole parts (16), the upper-end surface of link (17) is positioned at the center hole and the hinged rotary valve (3) of draining hole parts (16), the lower end of link (17) connects location short circuit (18), and location short circuit (18) connects oil inlet hole parts (20); Have internal drainage hole (4) on the described draining hole parts (16), have oil inlet hole (8) on the oil inlet hole parts (20) and reach oil inlet hole (10) down, the epimere external cylindrical surface of location short circuit (18) and the external cylindrical surface of link (17) are isometrical, there is circumferential support level (19) lower end of location short circuit (18), and support level (19) is gone up the axial gap (22) that distributes; Be equipped with spring (7) between the axial ring cavity of the last positioning step (15) of support level (19) and valve body (1); Form ring cavity (21) between the lower end surface of the endoporus of the external cylindrical surface of described oil inlet hole parts (20), joint (9) and valve body (1) lower end and location short circuit (18).
2. height according to claim 1 contains the special use of sand well recovery rodless pump from the earial drainage one-way valve, it is characterized in that: the oilhole that leaks (5) on the valve body (1), the internal drainage hole (4) on the Spool assembly (6) and last oil inlet hole (8) and following oil inlet hole (10) are radially direct.
3. height according to claim 2 contains the special use of sand well recovery rodless pump from the earial drainage one-way valve, it is characterized in that: it is radial equipartition that the support level (19) on the location short circuit (18) is gone up the axial gap (22) that distributes.
4. height according to claim 3 contains the special use of sand well recovery rodless pump from the earial drainage one-way valve, it is characterized in that: between described draining hole parts (16) and link (17), between link (17) and location short circuit (18), be between location short circuit (18) and oil inlet hole parts (20) and be threaded.
5. height according to claim 4 contains the special use of sand well recovery rodless pump from the earial drainage one-way valve, it is characterized in that: between valve body (1) and draining hole parts (16) and link (17), between joint (9) and oil inlet hole parts (20), the lower end and joint (9) threaded ends of valve body (1) all be equipped with Sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010208389.0A CN102297127B (en) | 2010-06-24 | 2010-06-24 | Self-discharge check valve special for oil extraction rodless pump of high sand content oil well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010208389.0A CN102297127B (en) | 2010-06-24 | 2010-06-24 | Self-discharge check valve special for oil extraction rodless pump of high sand content oil well |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102297127A true CN102297127A (en) | 2011-12-28 |
| CN102297127B CN102297127B (en) | 2015-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010208389.0A Active CN102297127B (en) | 2010-06-24 | 2010-06-24 | Self-discharge check valve special for oil extraction rodless pump of high sand content oil well |
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| Country | Link |
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| CN (1) | CN102297127B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107100586A (en) * | 2017-04-13 | 2017-08-29 | 潍坊盛德石油机械制造有限公司 | The underlying flow-stop valve of screw pump |
| CN116357274A (en) * | 2023-06-01 | 2023-06-30 | 北京万普瑞能源技术有限公司 | Natural gas well rodless pump and foam drainage gas production composite process |
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| JP2003286967A (en) * | 2002-03-27 | 2003-10-10 | Yuzo Mori | High-pressure extrapure water manufacturing device |
| CN2608681Y (en) * | 2003-03-31 | 2004-03-31 | 渤海石油实业公司 | Automatic reset oil drain apparatus for oil field electric submerged pump production oil well |
| CN101328883A (en) * | 2008-06-20 | 2008-12-24 | 大庆油田力神泵业有限公司 | Self-refluxing single flow valve for oil-submersible electric pump |
| JP2009091941A (en) * | 2007-10-05 | 2009-04-30 | Furukawa Electric Co Ltd:The | Piston pump |
| CN201246296Y (en) * | 2008-06-16 | 2009-05-27 | 中国石油天然气股份有限公司长庆油田分公司第一采油厂 | Sliding valve type two-layer partial pressure composite extraction oil well pump |
| CN201321968Y (en) * | 2008-08-29 | 2009-10-07 | 徐正国 | Layer mining oil-well pump |
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2010
- 2010-06-24 CN CN201010208389.0A patent/CN102297127B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003286967A (en) * | 2002-03-27 | 2003-10-10 | Yuzo Mori | High-pressure extrapure water manufacturing device |
| CN2608681Y (en) * | 2003-03-31 | 2004-03-31 | 渤海石油实业公司 | Automatic reset oil drain apparatus for oil field electric submerged pump production oil well |
| JP2009091941A (en) * | 2007-10-05 | 2009-04-30 | Furukawa Electric Co Ltd:The | Piston pump |
| CN201246296Y (en) * | 2008-06-16 | 2009-05-27 | 中国石油天然气股份有限公司长庆油田分公司第一采油厂 | Sliding valve type two-layer partial pressure composite extraction oil well pump |
| CN101328883A (en) * | 2008-06-20 | 2008-12-24 | 大庆油田力神泵业有限公司 | Self-refluxing single flow valve for oil-submersible electric pump |
| CN201321968Y (en) * | 2008-08-29 | 2009-10-07 | 徐正国 | Layer mining oil-well pump |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107100586A (en) * | 2017-04-13 | 2017-08-29 | 潍坊盛德石油机械制造有限公司 | The underlying flow-stop valve of screw pump |
| CN116357274A (en) * | 2023-06-01 | 2023-06-30 | 北京万普瑞能源技术有限公司 | Natural gas well rodless pump and foam drainage gas production composite process |
| CN116357274B (en) * | 2023-06-01 | 2023-08-08 | 北京万普瑞能源技术有限公司 | Natural gas well rodless pump and foam drainage gas production composite process |
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| Publication number | Publication date |
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| CN102297127B (en) | 2015-06-17 |
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Address after: 163453 Heilongjiang Province, Daqing City Ranghulu District No. 263 South Central Avenue Patentee after: DAQING PETROLEUM ADMINISTRATION Co.,Ltd. Address before: 163312 No. 263, south section of central street, Ranghulu District, Daqing City, Heilongjiang Province Patentee before: DA QING PETROLEUM ADMINISTRATION BUREAU |
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Effective date of registration: 20220112 Address after: 163453 Heilongjiang Province, Daqing City Ranghulu District No. 263 South Central Avenue Patentee after: DAQING PETROLEUM ADMINISTRATION Co.,Ltd. Patentee after: CHINA NATIONAL PETROLEUM Corp. Address before: 163453 Heilongjiang Province, Daqing City Ranghulu District No. 263 South Central Avenue Patentee before: DAQING PETROLEUM ADMINISTRATION Co.,Ltd. |