CN102080646B - Layer mining anti-gas pump for pumping well - Google Patents

Layer mining anti-gas pump for pumping well Download PDF

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Publication number
CN102080646B
CN102080646B CN 201110051223 CN201110051223A CN102080646B CN 102080646 B CN102080646 B CN 102080646B CN 201110051223 CN201110051223 CN 201110051223 CN 201110051223 A CN201110051223 A CN 201110051223A CN 102080646 B CN102080646 B CN 102080646B
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China
Prior art keywords
pump
pump barrel
valve
bridge
barrel
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CN102080646A (en
Inventor
吕亿明
慕立俊
曾亚勤
李宪文
黄伟
牛彩云
白永忠
徐正国
李大建
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Petrochina Co Ltd
China Petroleum and Natural Gas Co Ltd
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China Petroleum and Natural Gas Co Ltd
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Abstract

The invention relates to a layer mining anti-gas pump for a pumping well, which is used for layer mining of oil in multilayer oilfield series. The layer mining anti-gas pump comprises an upper pump barrel assembly, a lower pump barrel assembly and a plunger assembly, wherein the lower end of a collar of an upper pump barrel is connected with the top end of the upper pump barrel, a gas barrel is fixed on the outer wall of the upper pump barrel, the wall of the upper pump barrel is provided with a gas hole, and the position of the gas hole is opposite to an annular space; the lower end of the upper pump barrel is connected with an upper pump joint; the lower end of an outer tube is connected with the upper end of a bridge joint; the lower end of the bridge joint is connected with a lower fixed valve, and the lower end of the lower fixed valve is connected with a lower joint; the upper end of the bridge joint is provided with an upper fixed valve, and the upper end of the upper fixed valve is connected with a lower pump barrel; the plunger assembly is provided with an upper traveling valve for an upper pump in the upper pump barrel and is provided with an upper traveling valve for a lower pump in the lower pump barrel; and the lower end of a lower plunger is connected with a lower traveling valve for the lower pump, and the upper end of the lower plunger is connected with the upper traveling valve for the lower pump. The layer mining anti-gas pump has the advantage of being used together with a packer, and the upper pump barrel assembly and the lower pump barrel assembly are respectively provided with an independent oil intake duct, thus the problem of gas locking during layer mining with double pumping pumps is solved.

Description

Layer mining anti-gas pump for pumping well
Technical field
The present invention relates to multilayer through-stone oil content layer exploitation technology field, oil field.Be particularly related to a kind of oil well pump that prevents gases affect.
Background technique
At present, multilayer is that separate extracting pump has minute to adopt to mix out and minute to adopt and tells dual mode, form by two cover oil well pump systems, behind the packer sealing oil jacket annular space, lower pump is taken out lower floor, and upper pump draws up layer, and two-layer liquid is discharged pump barrel after the passage by separately enters pump respectively, realize that two overlap oil pumping systems to respectively pumping lifting of oil reservoir, avoid interlayer interference to improve oil well output.
But conventional separate extracting pump is not eliminated the gases affect function.Such as China Patent Publication No.: 201372915, a kind of separate mining pump of pumping well is provided.Comprise pump group, lower pump group, packet, the working barrel of upper pump group, lower pump group is connected, upper and lower two-piston also is connected by hollow connecting rod, and valve in the middle of being equipped with on the working barrel tube wall between upper pump group, the lower pump group is equipped with packet on the working barrel outer tube wall of lower pump group lower end.Be used for oil well and divide to adopt obviously to simplify and minute adopt tubing string, improve and divide the reliability of adopting tubing string work.But, behind packer sealing oil jacket annular space, gas in the following oil reservoir of packet can't be discharged after pump barrel separates, prolongation along with the production time, gas in the separate extracting pump pump barrel is along with plunger upward and downward, cause gas compression, expansion, this portion gas forms gas cap, upstroke can not make the compression chamber internal pressure be lower than the suction pressure of pump, and standing valve is not opened, and the upstroke gas lock occurs, the head pressure of down stroke pump is lower than the head of liquid in the oil pipe, traveling valve can not be opened, and gas lock also occurs when down stroke pump, finally causes oil well output to descend or fluid not.
Summary of the invention
The objective of the invention is: a kind of layer mining anti-gas pump for pumping well is provided, and each own independently oil inlet passage of upper pump barrel assembly and lower pump barrel assembly improves separate extracting pump working efficiency and oil well output, overcomes the gas lock problem of conventional separate extracting pump.
The technical solution used in the present invention is: a kind of layer mining anti-gas pump for pumping well, mainly formed by upper pump barrel assembly, lower pump barrel assembly and plunger piston assembly, and it is characterized in that:
Upper pump barrel assembly mainly is comprised of upper pump barrel box cupling, upper pump barrel, inflator and upper pump joint; The lower end of upper pump barrel box cupling is threaded with the top of upper pump barrel, and inflator is fixed on the pump barrel outer wall, between inflator and the upper pump barrel annular space is arranged, and at upper pump barrel wall pore is arranged, and the position of pore is relative with annular space; Upper pump barrel lower end is connected with upper pump joint screw thread.When the plunger piston assembly up stroke, the gas that the bottom oil reservoir produces can enter by the pore on the upper pump barrel wall in the annular space between inflator and the upper pump barrel; When the plunger piston assembly down stroke arrived lower dead centre, the gas between inflator and the upper pump barrel in the annular space was discharged by the pore on the upper pump barrel wall.
Lower pump barrel assembly mainly is comprised of outer tube box cupling, outer tube, lower pump barrel, upper standing valve, screen casing and lower standing valve.The be threaded upper end of outer tube of the lower end of the upper pump joint outer tube box cupling that is threaded, the lower end of outer tube box cupling; The upper end of the lower end screw thread connecting bridge formula joint of outer tube; The lower end of bridge-type joint is connected with lower standing valve, and the lower end of lower standing valve connects lower contact.In the upper end of bridge-type joint and be connected with within the outer tube standing valve on, the lower pump barrel lower end that is threaded, the upper end of upper standing valve; Lower end at outer tube is fixed with screen casing, and bridge-type joint and lower standing valve are in screen casing.
Plunger piston assembly mainly is comprised of upper pump upper travelling valve, upper plug, upper pump lower travelling valve, rod head, pull bar, lower pump upper travelling valve, lower plunger and lower pump lower travelling valve; Pump upper travelling valve in upper pump barrel, having, upper plug, on pump lower travelling valve, rod head and pull bar;
Screw thread is arranged at the top of upper pump upper travelling valve, and upper pump upper travelling valve can be connected with sucker rod.The lower end of the upper pump upper travelling valve upper plug that is threaded, upper prop is plugged with center hole; The lower end of the upper plug upper pump lower travelling valve that is threaded, the lower end screw thread cylinder lever connecting rod joint of upper pump lower travelling valve, the lower end screw thread of rod head is connected with a pull bar; Pull bar passes pump joint and outer tube box cupling, the lower end of the pull bar lower pump upper travelling valve that is threaded; Lower pump upper travelling valve, lower plunger and lower pump lower travelling valve are arranged in lower pump barrel, and the lower end of lower plunger connects lower pump lower travelling valve, and the upper end of lower plunger connects lower pump upper travelling valve.
Described bridge-type joint is cylindrical, and the bridge-type upper end of joint has outside thread; The bridge-type upper end of joint has center hole, and there is center hole bridge-type joint lower end, and bridge-type upper end of joint center hole and lower end have interlayer is arranged between the center hole; In bridge-type joint lower end internal thread is arranged; There is radial hole the upper end of bridge-type joint, the bottom UNICOM of radial hole and upper end center hole, and the upper end of bridge-type joint is evenly distributed with axial bore, the top UNICOM of axial bore and lower end center hole.
When making plunger piston assembly arrive lower dead centre, the gas in the pump barrel can in time be discharged, and when layer mining anti-gas pump for pumping well is installed, sucker rod is arrived lower dead centre be adjusted into: the position of upper pump upper travelling valve is in the inflator annular space.
The oil recovery machiner those skilled in the art are familiar with described upper pump upper travelling valve, upper pump barrel, upper plug, upper pump lower travelling valve, lower pump barrel, lower pump upper travelling valve, lower plunger, lower pump lower travelling valve, upper standing valve and lower standing valve very much.The present invention slightly changes on component names in order to distinguish up and down two pumps, does not affect those skilled in the art and understands content of the present invention.
Layer mining anti-gas pump for pumping well gas-tight principle.Consult Fig. 3, Fig. 4 and Fig. 5.With upper pump barrel assembly, lower pump barrel assembly and plunger piston assembly and packet and other accessory G.I.H in order; Base sealed packer, sealing oil cover annular space; Be lowered to rod string, plunger piston assembly enters completion in the pump barrel assembly.Under the drive of pumping unit, rod string drives plunger piston assembly and pumps, and the liquid of finishing respectively Different Strata aspirates.Lower floor's liquid enters by lower standing valve, enters the annular pass that is comprised of outer tube and lower pump barrel by a plurality of through holes on the bridge two-channel joint and enters in the upper pump barrel; Supernatant liquid is entered by bridge-type joint sidewise hole through screen casing, and standing valve enters in the lower pump barrel on the process.
Upper pump barrel pump footpath and plunger are greater than lower pump barrel pump footpath and plunger, after packet separates two produce oil stratum of oil well, the understratum production fluid enters upper pump barrel by the lower end, the upper formation production fluid enters lower pump barrel by side opening, the fluid of the fluid of pump pumping understratum, lower pump pumping upper formation in the realization.When packet with after the oil jacket annular space sealing, the gas-liquid mixture of packet bottom oil reservoir through lower standing valve, and enter pump chamber through the annular pass of outer tube and lower pump barrel composition.When plunger is up, because the upper plug diameter is greater than the decline of pump barrel internal pressure, gas-liquid separation on the lower plunger diameter, a part of gas of upper pump barrel enters in the inflator and stores, when plunger is descending, pump barrel cavity of resorption volume diminishes, pressure raises, and upper standing valve, lower standing valve are closed, and the traveling valve on the plunger piston assembly is opened simultaneously, the liquid of pump barrel cavity of resorption advanced plunger and entered in the oil pipe, when the upper pump barrel perforate section of upper plug process, inflator links to each other with oil pipe, and the gas that is stored in the inflator is drained in the oil pipe.
Effect of the present invention: a kind of layer mining anti-gas pump for pumping well of the present invention, support the use with packet, each own independently oil inlet passage of upper pump barrel assembly and lower pump barrel assembly, pump barrel adopts single standing valve up and down, avoided phase mutual interference between the oil reservoir, valve body is reliable; Inflator on the upper pump barrel has been opened up passage for the discharge of gas, has solved the gas lock problem of black soy sauce oil pump separate zone production.
Description of drawings
Fig. 1 is layer mining anti-gas pump for pumping well upper half part structural profile schematic representation.
Fig. 2 is layer mining anti-gas pump for pumping well lower half portion structural profile schematic representation.
Fig. 3, Fig. 4 and Fig. 5 are layer mining anti-gas pump for pumping well working principle schematic representation.
Fig. 6 is the plan view of bridge-type joint, is the longitudinal section schematic representation of Fig. 7.
Fig. 7 is the schematic cross section of Fig. 6.
Among the figure: the upper pump barrel box cupling of 1-, the upper pump upper travelling valve of 2-, the upper pump barrel of 3-, 4-upper plug, the upper pump lower travelling valve of 5-, 6-rod head, 7-inflator, 8-pull bar, the upper pump joint of 9-, 10-outer tube box cupling, pump barrel under the 11-, the 12-outer tube, pump upper travelling valve under the 13-, 14-lower plunger, pump lower travelling valve under the 15-, the upper standing valve of 16-, 17-bridge-type joint, the 18-screen casing, standing valve under the 19-, 20-lower contact.
Embodiment
Embodiment 1:
Consult Fig. 1 and Fig. 2.Layer mining anti-gas pump for pumping well mainly is comprised of upper pump barrel assembly, lower pump barrel assembly and plunger piston assembly.
Upper pump barrel assembly mainly is comprised of upper pump barrel box cupling 1, upper pump barrel 3, inflator 7 and upper pump joint 9.The lower end of upper pump barrel box cupling 1 is threaded with the top of upper pump barrel 3, inflator 7 two ends are enclosed within on the outer wall of pump barrel 3 and welding, between inflator 7 and the upper pump barrel 3 annular space is arranged, be evenly distributed with pore at upper pump barrel 3 walls, aperture 1.5mm, the position of pore is relative with annular space, and the upper end of annular space is evenly distributed with six pores relatively, and the lower end of annular space is evenly distributed with six pores relatively.Upper pump barrel 3 lower ends are threaded with upper pump joint 9.The external diameter 60mm of upper pump barrel 3, long 440mm.External diameter 108mm, the length 500mm of inflator 7.Inflator 7 two ends internal diameters are identical with the external diameter of upper pump barrel 3; The wall thickness 8mm of inflator 7 intermediate portions, namely the width of annular space is 16mm.
Lower pump barrel assembly mainly is comprised of outer tube box cupling 10, outer tube 12, lower pump barrel 11, upper standing valve 16, screen casing 18 and lower standing valve 19.The be threaded upper end of outer tube 12 of the lower end of the upper pump joint 9 outer tube box cupling 10 that is threaded, the lower end of outer tube box cupling 10; The upper end of the lower end screw thread connecting bridge formula joint 17 of outer tube 12; The lower end of bridge-type joint 17 is connected with lower standing valve 19, and the lower end of lower standing valve 19 connects lower contact 20.In the upper end of bridge-type joint 17 and in outer tube 12, be connected with standing valve 16 on, lower pump barrel 11 lower ends that are threaded, the upper end of upper standing valve 16; Be fixed with screen casing 18 in the lower end of outer tube 12, bridge-type joint 17 and lower standing valve 19 are in screen casing 18.The external diameter 48mm of lower pump barrel 11, long 360mm, the external diameter 73mm length 355mm of outer tube 12.
Plunger piston assembly mainly is comprised of upper pump upper travelling valve 2, upper plug 4, upper pump lower travelling valve 5, rod head 6, pull bar 8, lower pump upper travelling valve 13, lower plunger 14 and lower pump lower travelling valve 15.Upper plug 4 and lower plunger 14 all adopt conventional tubing pump plunger, pump upper travelling valve 2 in upper pump barrel 3, having, upper plug 4, on pump lower travelling valve 5, rod head 6 and pull bar 8; The length of upper plug 4 and lower plunger 14 is 1200mm, and upper plug 4 diameters are 44mm, the diameter 32mm of lower plunger 14; The diameter 16mm of pull bar, length 2400mm.
Screw thread is arranged at the top of upper pump upper travelling valve 2, and upper pump upper travelling valve 2 can be connected with sucker rod.The lower end of upper pump upper travelling valve 2 upper plug 4 that is threaded, upper plug 4 has center hole; The lower end of the upper plug 4 upper pump lower travelling valve 5 that is threaded, the lower end screw thread cylinder lever connecting rod joint 6 of upper pump lower travelling valve 5, the lower end screw thread of rod head 6 is connected with a pull bar 8; Pull bar 8 passes pump joint 9 and outer tube box cupling 10, the lower end of the pull bar 8 lower pump upper travelling valve 13 that is threaded; Lower pump upper travelling valve 13, lower plunger 14 and lower pump lower travelling valve 15 are arranged in lower pump barrel 11, and the lower end of lower plunger 14 connects lower pump lower travelling valve 15, and the upper end of lower plunger 14 connects lower pump upper travelling valve 13.
Described bridge-type joint 17 is cylindrical, and there is outside thread bridge-type joint 17 upper ends; There is center hole bridge-type joint 17 upper ends, and there is center hole bridge-type joint 17 lower ends, and bridge-type joint 17 upper end center holes and lower end have interlayer is arranged between the center hole; In bridge-type joint 17 lower ends internal thread is arranged; There are two radial holes 171 that distribute symmetrically the upper end of bridge-type joint 17, and the diameter of radial hole 171 is 25mm.The bottom UNICOM of radial hole 171 and upper end center hole, there is the axial bore 171 that to be evenly distributed with six diameters be 5mm the upper end of bridge-type joint 17, the top UNICOM of axial bore 171 and lower end center hole.
Pump barrel assembly upper end is connected the lower end with oil pipe and links to each other with packet, packer set, and sealing oil cover annular space, the while also separates the filler opening of upper standing valve 16, lower standing valve 19; Upper pump upper travelling valve 2 is threaded with sucker rod, under the drive of ground pumping unit, when moving on the sucker rod, plunger piston assembly moves in the pump barrel assembly, the annular space of upper pump barrel lower end becomes large, lower pump barrel cavity of resorption internal volume and becomes large, standing valve 16, lower standing valve 19 are opened on the pressure decreased, and the following oil gas mixture of packet enters through lower standing valve 19, are entered in the upper pump barrel by lower pump barrel 11 and the annular space that outer tube 12 forms; Packer fluid passes through screen casing 18, is entered through upper standing valve 16 by bridge-type joint 17 sidewise holes to enter in the lower pump barrel.
When the upper plug in the plunger piston assembly moves past upper pump barrel perforate section, the a part of gas that enters pump barrel enters in the inflator 7, is stored in the inflator, when plunger piston assembly moves down, pump barrel cavity of resorption volume diminishes, pressure raises, and upper standing valve 16, lower standing valve 19 are closed, and the traveling valve on the plunger piston assembly is opened simultaneously, the liquid of pump barrel cavity of resorption advanced plunger and entered in the oil pipe, when the upper pump barrel perforate section of upper plug process, inflator 7 links to each other with oil pipe, and the gas that is stored in the inflator is drained in the oil pipe.

Claims (3)

1. a layer mining anti-gas pump for pumping well mainly is comprised of upper pump barrel assembly, lower pump barrel assembly and plunger piston assembly, it is characterized in that:
Upper pump barrel assembly mainly is comprised of upper pump barrel box cupling (1), upper pump barrel (3), inflator (7) and upper pump joint (9), the lower end of upper pump barrel box cupling (1) is threaded with the top of upper pump barrel (3), inflator (7) is fixed on pump barrel (3) outer wall, between inflator (7) and the upper pump barrel (3) annular space is arranged, at upper pump barrel (3) wall pore is arranged, the position of pore is relative with annular space; Upper pump barrel (3) lower end is threaded with upper pump joint (9);
Lower pump barrel assembly mainly is comprised of outer tube box cupling (10), outer tube (12), lower pump barrel (11), upper standing valve (16), screen casing (18) and lower standing valve (19), the be threaded upper end of outer tube (12) of the lower end of upper pump joint (9) the outer tube box cupling (10) that is threaded, the lower end of outer tube box cupling (10); The upper end of the lower end screw thread connecting bridge formula joint (17) of outer tube (12); The lower end of bridge-type joint (17) is connected with lower standing valve (19), and the lower end of lower standing valve (19) connects lower contact (20); In the upper end of bridge-type joint (17) and in outer tube (12), be connected with a upper standing valve (16), lower pump barrel (11) lower end that is threaded, the upper end of upper standing valve (16); Be fixed with screen casing (18) in the lower end of outer tube (12), bridge-type joint (17) and lower standing valve (19) are in screen casing (18);
Plunger piston assembly mainly is comprised of upper pump upper travelling valve (2), upper plug (4), upper pump lower travelling valve (5), rod head (6), pull bar (8), lower pump upper travelling valve (13), lower plunger (14) and lower pump lower travelling valve (15); Upper pump upper travelling valve (2), upper plug (4), upper pump lower travelling valve (5), rod head (6) and pull bar (8) are arranged in upper pump barrel (3); Screw thread is arranged at the top of upper pump upper travelling valve (2), the lower end of upper pump upper travelling valve (2) upper plug (4) that is threaded, and upper plug (4) has center hole; The lower end of upper plug (4) the upper pump lower travelling valve (5) that is threaded, the lower end screw thread cylinder lever connecting rod joint (6) of upper pump lower travelling valve (5), the lower end screw thread of rod head (6) is connected with a pull bar (8); Pull bar (8) passes pump joint (9) and outer tube box cupling (10), the lower end of pull bar (8) the lower pump upper travelling valve (13) that is threaded; Lower pump upper travelling valve (13), lower plunger (14) and lower pump lower travelling valve (15) are arranged in lower pump barrel (11), the lower end of lower plunger (14) connects lower pump lower travelling valve (15), and the upper end of lower plunger (14) connects lower pump upper travelling valve (13).
2. layer mining anti-gas pump for pumping well according to claim 1, it is characterized in that: described bridge-type joint (17) is cylindrical, there is outside thread bridge-type joint (17) upper end; There is center hole bridge-type joint (17) upper end, and there is center hole bridge-type joint (17) lower end, and bridge-type joint (17) upper end center hole and lower end have interlayer is arranged between the center hole; In bridge-type joint (17) lower end internal thread is arranged; There is radial hole (171) upper end of bridge-type joint (17), the bottom UNICOM of radial hole (171) and upper end center hole, the upper end of bridge-type joint (17) is evenly distributed with axial bore (172), the top UNICOM of axial bore (172) and lower end center hole.
3. layer mining anti-gas pump for pumping well according to claim 1 is characterized in that: when layer mining anti-gas pump for pumping well is installed, sucker rod is arrived lower dead centre be adjusted into: go up the position of pump upper travelling valve (2) in inflator (7) annular space.
CN 201110051223 2011-03-03 2011-03-03 Layer mining anti-gas pump for pumping well Active CN102080646B (en)

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102704891A (en) * 2012-06-26 2012-10-03 刘庆敏 Device for collecting oil well natural gas
CN103850668A (en) * 2014-01-23 2014-06-11 成都北方石油勘探开发技术有限公司 Oil extraction device capable of collecting and outputting in layers
CN106014342A (en) * 2016-05-11 2016-10-12 中国石油天然气股份有限公司 Oil pumping device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4632647A (en) * 1985-06-03 1986-12-30 Jack Rowlett Side entry down hole pump for oil wells
CN201144785Y (en) * 2007-11-21 2008-11-05 国营第三八八厂 Standing valve-salvageable tube-type gasproof oil-well pump
CN201155449Y (en) * 2008-02-01 2008-11-26 克拉玛依亚龙石油泵有限公司 Separating pumping separate conveying air discharging lock-preventing oil pump
CN201513332U (en) * 2009-08-28 2010-06-23 中国石油化工股份有限公司 Separate-pumping mixed-drainage oil well pump
WO2010104412A1 (en) * 2009-03-12 2010-09-16 Atlas Misbakhovich Badretdinov Oil well plunger pumping
CN201963531U (en) * 2011-03-03 2011-09-07 中国石油天然气股份有限公司 Slice mining anti-gas pump for pumping wells

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4632647A (en) * 1985-06-03 1986-12-30 Jack Rowlett Side entry down hole pump for oil wells
CN201144785Y (en) * 2007-11-21 2008-11-05 国营第三八八厂 Standing valve-salvageable tube-type gasproof oil-well pump
CN201155449Y (en) * 2008-02-01 2008-11-26 克拉玛依亚龙石油泵有限公司 Separating pumping separate conveying air discharging lock-preventing oil pump
WO2010104412A1 (en) * 2009-03-12 2010-09-16 Atlas Misbakhovich Badretdinov Oil well plunger pumping
CN201513332U (en) * 2009-08-28 2010-06-23 中国石油化工股份有限公司 Separate-pumping mixed-drainage oil well pump
CN201963531U (en) * 2011-03-03 2011-09-07 中国石油天然气股份有限公司 Slice mining anti-gas pump for pumping wells

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