CN203962512U - A kind of anti-circulation hydraulic positive displacement pump - Google Patents
A kind of anti-circulation hydraulic positive displacement pump Download PDFInfo
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- CN203962512U CN203962512U CN201420335549.1U CN201420335549U CN203962512U CN 203962512 U CN203962512 U CN 203962512U CN 201420335549 U CN201420335549 U CN 201420335549U CN 203962512 U CN203962512 U CN 203962512U
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 37
- 239000012530 fluid Substances 0.000 claims abstract description 62
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 33
- 229910000831 Steel Inorganic materials 0.000 claims description 44
- 239000010959 steel Substances 0.000 claims description 44
- 210000004907 gland Anatomy 0.000 claims description 43
- 230000008676 import Effects 0.000 claims description 26
- 239000004576 sand Substances 0.000 claims description 20
- 238000010276 construction Methods 0.000 abstract description 12
- 239000007788 liquid Substances 0.000 abstract description 10
- 238000000034 method Methods 0.000 description 8
- 238000005406 washing Methods 0.000 description 8
- 238000005086 pumping Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 206010060904 Freezing phenomenon Diseases 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The utility model discloses a kind of anti-circulation hydraulic positive displacement pump, and product technical field is asked in the discharge opeing that belongs to oil gas field, has mainly solved the technical problem that is difficult to quick, the efficient discharge opeing of realization after Oil/gas Well reservoir reconstruction.This anti-circulation hydraulic positive displacement pump comprises pump barrel, sliding sleeve and pump core, adopts anti-circulation when work, and power fluid injects by oil jacket annular space, after nozzle, form high-speed jet, formation fluid is sucked, and formation fluid and power fluid form high velocity liquid stream after mixing tube mixes, and by oil pipe, return ground.The utility model reasonable in design, easy and simple to handle, discharge opeing ability is strong, timely fast, is applicable to large-scale volume fracturing construction well.
Description
Technical field
The utility model belongs to the discharge opeing of oil gas field and asks product technical field, relates to a kind of oil-gas field fracturing transformation rear discharge opeing underground work kit, particularly a kind of anti-circulation hydraulic positive displacement pump.
Background technique
Discharge opeing is asked and produced is one of master operation in formation testing work progress.After perforation, after especially acidifying, pressing crack construction, product is asked in discharge opeing, requires in time fast, reaches the object of asking for production capacity, shortening cycle, reducing costs and be familiar with reservoir.After acidifying, pressure break, discharge opeing in time can be shortened the time that operation liquid is detained in oil reservoir, can improve to greatest extent the effect that product is asked in discharge opeing.So, in engineering, generally require that discharge opeing is timely, speed is fast, operating expenses is moderate simultaneously.
At present, low pressure oil (gas) field fluid-discharge method mainly contains pumping discharge opeing, and direct circulation hydraulic pump fluid-discharge technology method.These two kinds of technological methodes all exist certain narrow limitation.The defect of pumping fluid-discharge technology method be mainly reflected in efficiency low, take out the depth, do not reach the requirement of deep-well pumping; Drain age velocity is slow, causes discharge opeing cycle stretch-out, affects construction speed; And there is certain hidden danger at aspects such as well control safety, environmental protection in pumping fluid-discharge technology.The effect of direct circulation hydraulic pump fluid-discharge technology method is subject to the impact of oil jacket annular space area, and oil jacket annular space area is large, and flow rate of liquid is slow, and fluid-carrying capability reduces; And after discharge opeing, easily form bit freezing.
Therefore, be badly in need of a kind of rapidly, continuously, efficient discharge opeing instrument, and can meet the fracturing fluid technical requirements of the row of returning fast after extensive volume fracturing.
Model utility content
For solving the technical problem that is difficult to quick, the efficient discharge opeing of realization after Oil/gas Well reservoir reconstruction, the utility model provides a kind of anti-circulation hydraulic positive displacement pump, to be applicable to large-scale volume fracturing construction well.
The technological scheme that the utility model is taked is:
A kind of anti-circulation hydraulic positive displacement pump comprises pump barrel, sliding sleeve and pump core.
Described pump barrel comprises pump barrel overcoat and lower contact; Pump barrel overcoat is hollow tubular structure; The upper end of lower contact is socketed in the inside of pump barrel overcoat, and is fixedly connected with pump barrel overcoat by Cock screw.
Described sliding sleeve is hollow tubular structure, and by shear pin, is fixed on the inside of pump barrel overcoat, and the outer surface of sliding sleeve is provided with seal groove and cut groove; Seal groove Inner is provided with seal ring.
Described pump core comprises gland, gland, steel ball seat, positioning screwn, spacing steel ball, mixing tube, cemented carbide pipe, nozzle, plug, single current valve seat, one-way valve steel ball, jump ring, stop collar, butterfly spring, sand control rubber cushion and one-way valve lower contact.
Wherein, stop collar, butterfly spring, sand control rubber cushion, steel ball seat, positioning screwn, spacing steel ball are arranged in the gap that pump barrel overcoat and mixing tube surround.
Nozzle, plug, single current valve seat are arranged on the inside of sliding sleeve.
Mixing tube is arranged on the inside of pump barrel overcoat, and the upper end of mixing tube stretches out pump barrel overcoat, in the bottom of mixing tube, surveys cemented carbide pipe is installed;
Gland is sleeved on the outside of mixing tube, and the lower end of gland extends to the inside of pump barrel overcoat and is placed in the inside of stop collar; Stop collar is socketed in the outer surface of gland, and its underpart is connected with steel ball seat; Positioning screwn is arranged on the middle part of steel ball seat, is provided with spacing steel ball below positioning screwn.
The outer surface of gland offers gland groove one and gland groove two; Butterfly spring is arranged on the inside of stop collar, and the lower end of butterfly spring is connected with gland groove one; The upper end of butterfly spring and stop collar is provided with gland; Sand control rubber cushion is arranged on the interior survey of gland;
Nozzle is connected with the lower end of mixing tube, and the lower end of nozzle is connected with plug.
One-way valve seat is arranged on the below of plug, and the top of one-way valve seat is arranged on the inside of sliding sleeve, and the bottom of one-way valve seat is placed in the inside of lower contact; The middle part of one-way valve seat arranges one-way valve steel ball; The top of one-way valve steel ball is provided with jump ring; The lower end socket one-way valve lower contact of one-way valve seat.
Formation fluid import is offered in the bottom of one-way valve seat, and formation fluid import is between one-way valve steel ball and one-way valve lower contact.
Between mixing tube and one-way valve seat, be provided with formation fluid passage, and formation fluid passage is positioned at the same side of nozzle and plug.
On described pump barrel overcoat, sliding sleeve and pump core, all offer power fluid import, wherein, the power fluid import on pump barrel overcoat, sliding sleeve is separately positioned on its middle part; Power fluid import on pump core is connected with plug.
As preferably, the power fluid import on described pump barrel overcoat, sliding sleeve is 4, and power fluid import is symmetrical.
As preferably, the power fluid import on described pump core is 3, and it is uniform to be 120o.
As preferably, described formation fluid passage is 3 groups, and every group has 2 formation fluid passages, and 3 groups of formation fluid passages to be 120o uniform.
As preferably, the outer surface of described sliding sleeve is provided with 9 seal grooves, 1 cut groove.
As preferably, the shear pressure of described shear pin is 3～5MPa.
The utility model has the advantages that:
1. anti-circulation hydraulic positive displacement pump of the present utility model adopts anti-circulation when work, power fluid injects by oil jacket annular space, after nozzle, form high-speed jet, and near nozzle, form negative pressure, and formation fluid is sucked, formation fluid and power fluid form high velocity liquid stream after mixing tube mixes, by oil pipe, return ground, oil pipe cross section is relatively little, and liquid flow velocity is fast, discharge opeing intensity greatly, timely fast.
2. the mixing tube of anti-circulation hydraulic positive displacement pump of the present utility model is made by the alloy material of hard, has good intensity and erosion wear resistance.
3. anti-circulation hydraulic positive displacement pump of the present utility model adopts anti-circulation when work, and stratum is returned discharge opeing and do not entered the above annular space of packet, can effectively avoid the generation of sand setting bit freezing phenomenon.
4. anti-circulation hydraulic positive displacement pump of the present utility model can be realized pump core delivery tool and unlocks, and by anti-circulation backwash, goes out pump core, does not increase too much workload, easy and simple to handle.
5. anti-circulation hydraulic positive displacement pump of the present utility model is sliding bush type structure, can synchronously carry out pressure break, sand washing, discharge opeing construction, the reduction of erection time.After pressure break, sand washing construction finish, in oil pipe, drop into pump core, pump core lower end is sitting on sliding sleeve, and 3-5MPa is suppressed in direct circulation, cuts off fixedly shear pin of sliding sleeve, and sliding sleeve moves down, and is communicated with inlet opening passage between sliding sleeve and pump barrel, the anti-discharge opeing that circulates.
6. the pump core bottom of anti-circulation hydraulic positive displacement pump of the present utility model arranges single current valve seat and single current valve ball, can prevent when discharge opeing termination of pumping midway, and in tubing string, liquid level falls after rise again to stratum.
7. the pump core lower end of anti-circulation hydraulic positive displacement pump of the present utility model also can Bonding pressure meter, can record bottom pressure and production fluid situation during discharge opeing operation.
Below with reference to drawings and Examples, the utility model is described in further details.
Accompanying drawing explanation
Fig. 1 is the structural representation of anti-circulation hydraulic positive displacement pump.
Fig. 2 is pump barrel structural representation.
Fig. 3 is shift sleeve structure schematic diagram.
Fig. 4 is pump cored structure schematic diagram.
Fig. 5 is pump core A-A sectional view.
Fig. 6 is gland structural representation.
Fig. 7 is that the well that enters of anti-circulation hydraulic positive displacement pump sets front view.
Fig. 8 is the sliding sleeve of the anti-circulation hydraulic positive displacement pump view that puts in place.
Fig. 9 is the discharge opeing working state schematic representation of anti-circulation hydraulic positive displacement pump.
Figure 10 is the release of anti-circulation hydraulic positive displacement pump view to be gone out.
Description of reference numerals: 1, gland; 2, gland; 3, steel ball seat; 4, positioning screwn; 5, spacing steel ball; 6, mixing tube; 7, cemented carbide pipe; 8, nozzle; 9, sliding sleeve; 10, plug; 11, shear pin; 12, single current valve seat; 13, Cock screw; 14, lower contact; 15, one-way valve steel ball; 16, jump ring; 17, pump barrel overcoat; 18, stop collar; 19, butterfly spring; 20, sand control rubber cushion; 21, formation fluid passage; 22, power fluid import; 23, seal groove; 24, cut groove; 25, one-way valve lower contact; 26, gland groove one; 27, gland groove two; 28, formation fluid import.
Embodiment
Discharge opeing is asked and produced is one of master operation in formation testing work progress.Current, the discharge opeing in low pressure oil (gas) field asks production. art to mainly contain pumping discharge opeing and direct circulation hydraulic pump fluid-discharge method.These two kinds of technological methodes all exist certain narrow limitation.For this reason, the utility model provides a kind of anti-circulation hydraulic positive displacement pump.From overall structure, say, this positive displacement pump comprises pump barrel, sliding sleeve 9 and pump core three parts.
As depicted in figs. 1 and 2, described pump barrel comprises pump barrel overcoat 17 and lower contact 14.Pump barrel overcoat 17 is hollow tubular structure, and the lower end of pump barrel overcoat 17 is connected with lower contact 14.The upper end of lower contact 14 is socketed in the inside of pump barrel overcoat 17, and is fixedly connected with pump barrel overcoat 17 by Cock screw 13.
Described sliding sleeve 9 is hollow tubular structure, and sliding sleeve 9 is arranged on the inside of pump barrel overcoat 17, and by shear pin 11, is fixed on the inside of pump barrel overcoat 17.As shown in Figure 3, it should be noted that, the outer surface of sliding sleeve 9 is provided with seal groove 23 and cut groove 24; Wherein, seal groove 23 Inner are provided with seal ring.Especially, the outer surface of sliding sleeve 9 is provided with 9 seal grooves and 1 cut groove.Also have, the shear pressure of shear pin 11 is 3～5MPa.
Described pump core is arranged on the inside of anti-circulation hydraulic positive displacement pump.The pump core lower end of anti-circulation hydraulic positive displacement pump of the present utility model also can Bonding pressure meter, can record bottom pressure and production fluid situation during discharge opeing operation.
As shown in Figure 4, pump core comprises the parts such as gland 1, gland 2, steel ball seat 3, positioning screwn 4, spacing steel ball 5, mixing tube 6, cemented carbide pipe 7, nozzle 8, plug 9, single current valve seat 12, one-way valve steel ball 15, jump ring 16, stop collar 18, butterfly spring 19, sand control rubber cushion 20 and one-way valve lower contact 25.Wherein, stop collar 18, butterfly spring 19, sand control rubber cushion 20, steel ball seat 3, positioning screwn 4, spacing steel ball 5 are arranged in the gap that pump barrel overcoat 17 and mixing tube 6 surround.Further, nozzle 8, plug 9, single current valve seat 12 are arranged on the inside of sliding sleeve 9.
Mixing tube 6 is arranged on the inside of pump barrel overcoat 17, and the upper end of mixing tube 6 stretches out pump barrel overcoat 17, in the bottom of mixing tube 6, surveys cemented carbide pipe 7 is installed.What deserves to be explained is, cemented carbide pipe 7 and mixing tube 6 are made by the alloy material of hard, make it have good intensity and anti-erosion property.
Gland 1 is sleeved on the outside of mixing tube 6, and the lower end of gland 1 extends to the inside of pump barrel overcoat 17 and is placed in the inside of stop collar 18.Stop collar 18 is socketed in the outer surface of gland 1, and its underpart is connected with steel ball seat 3.Positioning screwn 4 is arranged on the middle part of steel ball seat 3, is provided with spacing steel ball 5 below positioning screwn 4.
As shown in Figure 6, the outer surface of gland 1 offers gland groove 1 and gland groove 2 27.Butterfly spring 19 is arranged on the inside of stop collar 18, and the lower end of butterfly spring 19 is connected with gland groove 1.The upper end of butterfly spring 19 and stop collar 18 is provided with gland 2.Sand control rubber cushion 20 is arranged on the interior survey of gland 2.
Nozzle 8 is connected with the lower end of mixing tube 6, and the lower end of nozzle 8 is connected with plug 10.
One-way valve seat 12 is arranged on the below of plug 10, and the top of one-way valve seat 12 is arranged on the inside of sliding sleeve 9, and the bottom of one-way valve seat 12 is placed in the inside of lower contact 14.The middle part of one-way valve seat 12 arranges one-way valve steel ball 15.The top of one-way valve steel ball 15 is provided with jump ring 16; The lower end socket one-way valve lower contact 25 of one-way valve seat 12.
It is pointed out that the setting of one-way valve seat 12 and one-way valve steel ball 15, can prevent when discharge opeing termination of pumping midway, in tubing string, liquid level falls after rise again to stratum.
Formation fluid import 28 is offered in the bottom of one-way valve seat 12, it is pointed out that formation fluid import 28 is between one-way valve steel ball 15 and one-way valve lower contact 25.
As shown in Figure 5, between mixing tube 6 and one-way valve seat 12, be provided with formation fluid passage 21, and formation fluid passage 21 is positioned at the same side of nozzle 8 and plug 10.Especially, formation fluid passage 21 is 3 groups, and every group has 2 formation fluid passages 21, and 3 groups of formation fluid passages 21 to be 120o uniform.
It is emphasized that on described pump barrel overcoat 17, sliding sleeve 9 and pump core and all offer power fluid import 22.Wherein, the power fluid import 22 on pump barrel overcoat 17, sliding sleeve 9 is separately positioned on its middle part; Power fluid import 22 on pump core is connected with plug 10.As preferably, the power fluid import 22 on described pump barrel overcoat 17, sliding sleeve 9 is 4, and power fluid import 22 is symmetrical.As shown in Figure 5, the power fluid import 22 on described pump core is 3, and it is uniform to be 120o.
The Specific construction of a kind of anti-circulation hydraulic positive displacement pump that the utility model provides can be divided into the different stages:
(1) lower pump barrel
When pressure break, sand washing operation, first sliding sleeve 9 is fixed on pump barrel, subsequently by pump barrel and sliding sleeve 9 with pressure break pipe lower going-into-well under precalculated position, the lower contact 14 connection construction tubing strings of pump barrel.When pressure break, sand washing construction, do not throw pump core, guarantee that liquid is entered stratum or returned out well head by pump barrel smoothly.Sliding sleeve 9 on pump barrel guarantees that in pressure break, sand washing work progress, oil jacket is obstructed.
(2) lower pump core
After pressure break, sand washing construction finish, while carrying out discharge opeing, pump core is dropped in oil pipe, pump core nozzle 8 upwards, makes its free fall, pump core band limited location steel ball 5, entering a rear butterfly spring 19 snaps on the gland groove 1 of gland 1, spacing steel ball 5 sits in steel ball seat 3, and positioning screwn 4 limits the motion of spacing steel ball 5, and pump core lower end is sitting on sliding sleeve 9.Now, the working state of anti-circulation hydraulic positive displacement pump as shown in Figure 7.
(3) cover that skids
From oil pipe direct circulation, suppress, when pump pressure reaches 3-5MPa, cut off the shear pin 11 of sliding sleeve 9 and pump barrel overcoat 17, sliding sleeve 9 moves down, power fluid entrance 22 UNICOMs on pump barrel, sliding sleeve 9, pump core.Now, the working state of anti-circulation hydraulic positive displacement pump as shown in Figure 8.
(4) the anti-discharge opeing that circulates
By Surface power drive pump, by oil jacket annular space, inject power fluid, through nozzle 8, form high-speed jet, in nozzle chambers, form negative pressure, formation fluid is passed through one-way valve steel ball 15 under strata pressure effect, enter formation fluid passage 21, in mixing tube 6, mix with power fluid, by oil pipe, discharge, realize anti-circulation discharge opeing.Now, the working state of anti-circulation hydraulic positive displacement pump as shown in Figure 9.
(5) play pump core
After discharge opeing finishes, throw 38mm steel ball, direct circulation is suppressed, and gland 1 drives pump core to move down, and butterfly spring 19 moves to the gland groove 2 27 of gland 1 on relatively, spacing steel ball 5 releases, and anti-circulation washes out pump core.Now, the working state of anti-circulation hydraulic positive displacement pump as shown in figure 10.
Anti-circulation hydraulic positive displacement pump of the present utility model adopts anti-circulation when work, power fluid injects by oil jacket annular space, after nozzle, form high-speed jet, and near nozzle, form negative pressure, and formation fluid is sucked, formation fluid and power fluid form high velocity liquid stream after mixing tube mixes, by oil pipe, return ground, oil pipe cross section is relatively little, and liquid flow velocity is fast, discharge opeing intensity greatly, timely fast.Meanwhile, adopt anti-circulation during work, stratum is returned discharge opeing and is not entered the above annular space of packet, can effectively avoid the generation of sand setting bit freezing phenomenon.
Anti-circulation hydraulic positive displacement pump of the present utility model can be realized pump core delivery tool and unlock, and by anti-circulation backwash, goes out pump core, does not increase too much workload, easy and simple to handle.And this positive displacement pump is sliding bush type structure, can synchronously carry out pressure break, sand washing, discharge opeing construction, the reduction of erection time.After pressure break, sand washing construction finish, in oil pipe, drop into pump core, pump core lower end is sitting on sliding sleeve, and 3-5MPa is suppressed in direct circulation, cuts off fixedly shear pin of sliding sleeve, and sliding sleeve moves down, and is communicated with inlet opening passage between sliding sleeve and pump barrel, the anti-discharge opeing that circulates.
By reference to the accompanying drawings mode of execution of the present utility model is described above, but the utility model is not limited to above-mentioned mode of execution, in the ken that one skilled in the relevant art possesses, can also under the prerequisite that does not depart from the utility model aim, make a variety of changes.
Claims (6)
1. an anti-circulation hydraulic positive displacement pump, is characterized in that comprising pump barrel, sliding sleeve (9) and pump core;
Described pump barrel comprises pump barrel overcoat (17) and lower contact (14); Pump barrel overcoat (17) is hollow tubular structure; The upper end of lower contact (14) is socketed in the inside of pump barrel overcoat (17), and is fixedly connected with pump barrel overcoat (17) by Cock screw (13);
Described sliding sleeve (9) is hollow tubular structure, and by shear pin (11), is fixed on the inside of pump barrel overcoat (17), and the outer surface of sliding sleeve (9) is provided with seal groove (23) and cut groove (24); Seal groove (23) Inner is provided with seal ring;
Described pump core comprises gland (1), gland (2), steel ball seat (3), positioning screwn (4), spacing steel ball (5), mixing tube (6), cemented carbide pipe (7), nozzle (8), plug (10), single current valve seat (12), one-way valve steel ball (15), jump ring (16), stop collar (18), butterfly spring (19), sand control rubber cushion (20) and one-way valve lower contact (25);
Wherein, stop collar (18), butterfly spring (19), sand control rubber cushion (20), steel ball seat (3), positioning screwn (4), spacing steel ball (5) are arranged in the gap that pump barrel overcoat (17) and mixing tube (6) surround;
Nozzle (8), plug (10), single current valve seat (12) are arranged on the inside of sliding sleeve (9);
Mixing tube (6) is arranged on the inside of pump barrel overcoat (17), and the upper end of mixing tube (6) stretches out pump barrel overcoat (17), in the bottom of mixing tube (6), surveys cemented carbide pipe (7) is installed;
Gland (1) is sleeved on the outside of mixing tube (6), and the lower end of gland (1) extends to the inside of pump barrel overcoat (17) and is placed in the inside of stop collar (18); Stop collar (18) is socketed in the outer surface of gland (1), and its underpart is connected with steel ball seat (3); Positioning screwn (4) is arranged on the middle part of steel ball seat (3), in the below of positioning screwn (4), is provided with spacing steel ball (5);
The outer surface of gland (1) offers gland groove one (26) and gland groove two (27); Butterfly spring (19) is arranged on the inside of stop collar (18), and the lower end of butterfly spring (19) is connected with gland groove one (26); The upper end of butterfly spring (19) and stop collar (18) is provided with gland (2); Sand control rubber cushion (20) is arranged on the interior survey of gland (2);
Nozzle (8) is connected with the lower end of mixing tube (6), and the lower end of nozzle (8) is connected with plug (10);
One-way valve seat (12) is arranged on the below of plug (10), and the top of one-way valve seat (11) is arranged on the inside of sliding sleeve (9), and the bottom of one-way valve seat (11) is placed in the inside of lower contact (14); The middle part of one-way valve seat (11) arranges one-way valve steel ball (15); The top of one-way valve steel ball (15) is provided with jump ring (16); The lower end socket one-way valve lower contact (25) of one-way valve seat (11);
Formation fluid import (28) is offered in the bottom of one-way valve seat (11), and formation fluid import (28) is positioned between one-way valve steel ball (15) and one-way valve lower contact (25);
Between mixing tube (6) and one-way valve seat (12), be provided with formation fluid passage (21), and formation fluid passage (21) is positioned at the same side of nozzle (8) and plug (10);
On described pump barrel overcoat (17), sliding sleeve (9) and pump core, all offer power fluid import (22), wherein, the power fluid import (22) on pump barrel overcoat (17), sliding sleeve (9) is separately positioned on its middle part; Power fluid import (22) on pump core is connected with plug (10).
2. anti-circulation hydraulic positive displacement pump according to claim 1, is characterized in that, the power fluid import (22) on described pump barrel overcoat (17), sliding sleeve (9) is 4, and power fluid import (22) is symmetrical.
3. anti-circulation hydraulic positive displacement pump according to claim 1, is characterized in that, the power fluid import (22) on described pump core is 3, and it is uniform to be 120o.
4. anti-circulation hydraulic positive displacement pump according to claim 1, is characterized in that, described formation fluid passage (21) is 3 groups, and every group has 2 formation fluid passages (21), and 3 groups of formation fluid passages (21) to be 120o uniform.
5. anti-circulation hydraulic positive displacement pump according to claim 1, is characterized in that, the outer surface of described sliding sleeve (9) is provided with 9 seal grooves (23), 1 cut groove (24).
6. anti-circulation hydraulic positive displacement pump according to claim 1, is characterized in that, the shear pressure of described shear pin (11) is 3～5MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420335549.1U CN203962512U (en) | 2014-06-23 | 2014-06-23 | A kind of anti-circulation hydraulic positive displacement pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420335549.1U CN203962512U (en) | 2014-06-23 | 2014-06-23 | A kind of anti-circulation hydraulic positive displacement pump |
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| CN203962512U true CN203962512U (en) | 2014-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420335549.1U Expired - Lifetime CN203962512U (en) | 2014-06-23 | 2014-06-23 | A kind of anti-circulation hydraulic positive displacement pump |
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| CN (1) | CN203962512U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105387006A (en) * | 2015-10-10 | 2016-03-09 | 中国石油天然气股份有限公司 | Injection pump |
| CN106194093A (en) * | 2016-08-31 | 2016-12-07 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | The orientation of a kind of open sliding sleeve slightly solubility ball is shot through instrument and technique |
-
2014
- 2014-06-23 CN CN201420335549.1U patent/CN203962512U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105387006A (en) * | 2015-10-10 | 2016-03-09 | 中国石油天然气股份有限公司 | Injection pump |
| CN106194093A (en) * | 2016-08-31 | 2016-12-07 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | The orientation of a kind of open sliding sleeve slightly solubility ball is shot through instrument and technique |
| CN106194093B (en) * | 2016-08-31 | 2019-04-16 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | A kind of open sliding sleeve is shot through tool and technique with the orientation of slightly solubility ball |
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