CN110230591A - Seal assembly and deep well pump sealing system - Google Patents
Seal assembly and deep well pump sealing system Download PDFInfo
- Publication number
- CN110230591A CN110230591A CN201810179528.8A CN201810179528A CN110230591A CN 110230591 A CN110230591 A CN 110230591A CN 201810179528 A CN201810179528 A CN 201810179528A CN 110230591 A CN110230591 A CN 110230591A
- Authority
- CN
- China
- Prior art keywords
- sealing element
- seal assembly
- piston
- seal
- sealing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
- F04B53/1087—Valve seats
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
- F04B53/12—Valves; Arrangement of valves arranged in or on pistons
- F04B53/125—Reciprocating valves
- F04B53/129—Poppet valves
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
The invention discloses a kind of seal assemblies and deep well pump sealing system, are related to oil extraction in oil field pump technical field.The seal assembly includes sealing element and seal receptacle；One end of the sealing element blocks, and the other end is provided with the chamber of opening, and the channel with the chamber is offered on the side wall of the sealing element；The seal receptacle has centre bore；The sealing element can slide up and down in the centre bore of the seal receptacle.Seal assembly provided in an embodiment of the present invention, it is slidably located in the centre bore of seal receptacle by the way that sealing element is arranged, and chamber and channel are set on sealing element, so that it is slided up and down cooperation with sealing element, realizes that the opening and closing of seal assembly operate, and when seal assembly closure, it is face contact between sealing element and seal receptacle, forming face sealing avoids sundries and is deposited on seal receptacle the influence caused by sealing element, enable sealing element setting tight, guarantees the normal work of seal assembly.
Description
Technical field
The present invention relates to oil extraction in oil field pump technical field, in particular to a kind of seal assembly and deep well pump sealing system.
Background technique
In oil extraction in oil field, generallys use deep well pump and crude oil in well is extracted on ground.Deep well pump includes pump barrel and is located at
Piston in pump barrel, is provided with seal assembly in piston, and when work, deep well pump is using seal assembly in piston stroking upward, downlink
Folding condition aspirated and conveyed crude oil.
In the prior art, the seal assembly of deep well pump is sealing element and seal receptacle, specifically includes two groups of valve balls and valve
Seat, one group is travelling, and one group is fixed, wherein valve ball is equivalent to sealing element, and valve seat is equivalent to seal receptacle.Work as depth
It when the piston stroking upward of well pump, falls on travelling valve seat and seals under travelling valve ball, the liquid in flow string is lifted to ground
Face, while standing valve ball is detached from standing valve seat, and shaft bottom liquid is made to enter pump barrel；It is fixed when the piston downlink of deep well pump
It falls on standing valve seat and seals under valve ball, travelling valve ball is detached from travelling valve seat, and the liquid in pump barrel is made to enter production
In tubing string.
Inventor discovery in the prior art the prior art has at least the following problems:
It is linear sealing between valve ball and valve seat, when in oil well when due to seal assembly in the prior art sealing
Sand, mud enter in the pump barrel of deep well pump with oil stream, and then when being deposited on valve seat, the sand, the mud that are deposited on valve seat
It can hinder setting between valve ball and valve seat, make setting imprecision, cause deep well pump leakage without fuel-displaced, it is serious to make
At the generation of the down-hole accidents such as husky card, mud card, dirt card, going on smoothly for oil extraction operation is affected, workover cost is increased.
Summary of the invention
The present invention provide it is a kind of can sand control, the seal assembly of anti-mud and deep well pump sealing system, above-mentioned skill can be solved
Art problem.
Specifically, including technical solution below:
In a first aspect, providing a kind of seal assembly, including sealing element and seal receptacle；
One end of the sealing element blocks, and the other end is provided with the chamber of opening, and on the side wall of the sealing element
Offer the channel with the chamber；
The seal receptacle has centre bore；
The sealing element can slide up and down in the centre bore of the seal receptacle.
In a kind of possible design, limiting stand is provided on one end of the closure of the sealing element；
The limiting stand is used to be resisted against the upper surface of the seal receptacle.
In a kind of possible design, seal receptacle further includes the sealing ring being arranged on the inner wall of the centre bore.
In a kind of possible design, the oblique top in channel is arranged on the side wall of the sealing element.
Second aspect, provides a kind of deep well pump sealing system, and the piston including pump barrel and in the pump barrel is described
Piston is internally provided with the first travelling seal assembly being fixedly connected with one end of the piston, the lower section connection of the pump barrel
There is fixing seal component；
The first travelling seal assembly and the fixing seal component are any sealing mentioned by first aspect
Component.
In a kind of possible design, the inside of the piston, which is additionally provided with, to be fixedly connected with the other end of the piston
Second travelling seal assembly；
The second travelling seal assembly has structure identical with the first travelling seal assembly.
In a kind of possible design, the inside of oil suction chamber screw thread pressure cap is arranged in the fixing seal component；
The oil suction chamber screw thread pressure cap is connected to the lower section of the pump barrel by pump housing box cupling.
In a kind of possible design, the first travelling seal assembly is arranged in piston oil outlet chamber screw thread pressure cap
Portion；
The piston oil outlet chamber screw thread pressure cap is shorted the upper end for being connected to the piston by screw thread.
In a kind of possible design, the second travelling seal assembly is arranged on piston silk plug；
The piston silk plug is shorted the lower end for being connected to the piston by oil outlet chamber screw thread.
It further include the bushing being arranged between the piston and the pump barrel in a kind of possible design.
Technical solution provided in an embodiment of the present invention the utility model has the advantages that
Seal assembly provided in an embodiment of the present invention, the centre bore for being slidably located on seal receptacle by the way that sealing element is arranged
In, and chamber and channel are set on sealing element, it is made to slide up and down cooperation with sealing element, realize the opening of seal assembly with
Closed procedure, and when seal assembly closure, it is face contact between sealing element and seal receptacle, forming face sealing avoids sundries
It is deposited on seal receptacle the influence caused by sealing element, enables sealing element setting tight, guarantees the normal work of seal assembly.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is a kind of structural schematic diagram of seal assembly provided in an embodiment of the present invention；
Fig. 2 is a kind of structural schematic diagram of deep well pump sealing system provided in an embodiment of the present invention.
Appended drawing reference in figure respectively indicates:
1, sealing element；101, limiting stand；102, chamber；103, channel；
2, seal receptacle；201, centre bore；202, sealing ring；
3, pump barrel；
4, piston；
5, the first travelling seal assembly；
6, fixing seal component；
7, the second travelling seal assembly；
8, oil suction chamber screw thread pressure cap；
9, pump housing box cupling；
10, piston oil outlet chamber screw thread pressure cap；
11, screw thread is shorted；
12, piston silk plug；
13, oil outlet chamber screw thread is shorted；
14, pump head screw thread pressure cap；
15, tail box cupling is pumped；
16, bushing.
Specific embodiment
To keep technical solution of the present invention and advantage clearer, below in conjunction with attached drawing to embodiment of the present invention make into
One step it is described in detail.Unless otherwise defined, all technical terms used in the embodiment of the present invention all have and art technology
The normally understood identical meaning of personnel.
In a first aspect, the embodiment of the invention provides a kind of seal assemblies, as described in Figure 1, which includes sealing
Part 1 and seal receptacle 2；
One end of sealing element 1 blocks, and the other end is provided with the chamber 102 of opening, and opens up on the side wall of sealing element 1
There is the channel 103 being connected to chamber 102；
Seal receptacle 2 has centre bore 201；
Sealing element 1 can slide up and down in the centre bore 201 of seal receptacle 2.
Seal assembly provided in an embodiment of the present invention, the centre bore for being slidably located on seal receptacle 2 by the way that sealing element 1 is arranged
In 201, and chamber 102 and channel 103 are set on sealing element 1, make its cooperation that slides up and down with sealing element 1, realizes sealing
The opening and closing of component operate, and are face contact between sealing element 1 and seal receptacle 2, forming face is close when seal assembly closure
Envelope, avoids sundries and is deposited on seal receptacle the influence caused by sealing element, enables sealing element setting tight, guarantees sealing group
The normal work of part.
It is understood that " sealing element 1 can slide up and down in the centre bore 201 of seal receptacle 2 " refers to sealing element 1
It can be slided up and down along the inner wall of centre bore 201 under by external force, and sealing element 1 is the component with certain length, i.e.,
2 a distance of seal receptacle is exposed in the top and bottom of sealing element 1 respectively so that sealing element 1 centre bore 201 slide when, will not
Seal receptacle 2 is detached from because suffered active force is excessive.Wherein, "upper", "lower" are fixed with the working condition of the seal assembly
Justice.
In application, when sealing element 1 is by downward certain effect power, sealing element 1 along centre bore 201 inner wall to downslide
It is dynamic, so that being located on the upper surface position below of seal receptacle 2 to outward opening for the channel 103 of sealing element 1, avoids seal receptacle 2
Upper and lower space connection, so that seal assembly be made to be closed；When sealing element 1 is by upward certain effect power, 1 edge of sealing element
The inner wall upward sliding of centre bore 201, so that the channel 103 of sealing element 1 is located at the upper surface of seal receptacle 2 or more to outward opening
Position on, be connected to the upper and lower space of seal receptacle 2 with channel 103 by chamber 102, so that seal assembly be made to open.
Compared with the linear sealing of valve ball in the prior art and valve seat, the seal assembly of the embodiment of the present invention is used
Face sealing, even if sundries is deposited on the surface of seal receptacle 2, will not influence the sealing between sealing element 1 and seal receptacle 2, protect
Demonstrate,prove the normal work of seal assembly.
It is slided up and down in centre bore 201 in order to not influence sealing element 1, and reaches better seal effect, it can be at center
Sealing ring 202 is set on the inner wall in hole 201.
Illustratively, annular groove can be set on the inner wall of centre bore 201, sealing ring 202 is mounted in annular groove.
In application, sealing element 1 is located in centre bore 201, and the surrounding of sealing element 1 is connected on sealing ring 202.Sealing ring
202 form the axial seal of seal assembly with sealing element 1.Wherein, sealing ring 202 can be rubber seal.
In addition, in order to further realize the sealing function of the seal assembly, it can also be longitudinal close to seal assembly setting
Envelope.
Illustratively, limiting stand 101 can be set on one end of the closure of sealing element 1, and limiting stand 101 is for being resisted against sealing
On the upper surface of seat 2.The embodiment of the present invention does not have considered critical to the structure of limiting stand 101, in a kind of possible embodiment side
In formula, settable limiting stand 101 forms T-type structure workpiece with sealing element 1, in order to the longitudinal sealing of seal assembly.
In application, limiting stand 101 can be against when sealing element 1 is snapped down to seal assembly closure by downward active force
On the upper surface of seal receptacle 2, to realize the sealing of seal assembly in the longitudinal direction.
It is understood that the longitudinal sealing is the sealing of steel face, similarly, in order to reinforce sealing effect, can also limit
Gasket is set on the contact surface of position platform 101 and seal receptacle 2.
In addition, limiting stand 101 is arranged on one end of the closure of sealing element 1, limit also is played to the downslide of sealing element 1 and is made
With the down force for avoiding sealing element 1 from being subject to is excessive and sealing element 1 is made to detach centre bore 201.
Similarly, limiting stand can also be set in one end of the chamber 102 with opening of sealing element 1, to avoid close
The upward active force that sealing 1 is subject to is excessive and sealing element 1 is made to detach centre bore 201.
In above-mentioned seal assembly, there is no considered critical to the set-up mode in channel 103, for the ease of channel when application
The circulation of fluid in 103, settable channel 103 are access ramp, that is to say, that sealing element 1 is arranged in the oblique top in channel 103
On side wall.
In application, sealing element 1 glide can make the oblique top in channel 103 to outward opening be located at the upper surface of seal receptacle 2 with
Under position on, the connection of the upper space of chamber 102 and seal receptacle 2 is blocked, to realize that seal assembly is closed；Sealing element 1
Upper cunning can make on the position of the upper surface for being located at seal receptacle 2 to outward opening of the oblique top in channel 103 or more, and channel 103 makes chamber
Room 102 is connected to the upper space of seal receptacle 2, to realize that seal assembly is opened.
Further, for the ease of the quick flowing of fluid, also settable channel 103 is at least two, for example, 2,3,
4 etc., so that fluid can be flowed by plurality of passages 103 from the lower space of seal receptacle 2 when seal assembly is opened
Portion space.
Wherein, settable channel 103 is equably provided on the side wall of sealing element 1, to guarantee that fluid is passing through sealing element 1
When flowing, 1 uniform force of sealing element avoids 1 deflection of sealing element and off center hole 201.
Second aspect, the embodiment of the present invention also provide a kind of deep well pump sealing system, as shown in Fig. 2, including pump barrel 3 and position
In the piston 4 in pump barrel 3, piston 4 is internally provided with the first travelling seal assembly 5 being fixedly connected with one end of piston 4, pump
The lower section of cylinder 3 is connected with fixing seal component 6；
First travelling seal assembly 5 and fixing seal component 6 are seal assembly mentioned by first aspect.
Deep well pump sealing system provided in an embodiment of the present invention makes by using seal assembly mentioned by first aspect
Deep well pump sealing system becomes face from original linear sealing and seals, and solves the sand in oil well, mud is deposited in nothing on seal receptacle
The setting tight problem of method, avoids deep well pump leakage, and the generation of the down-hole accidents such as Sha Ka, mud card, dirt card guarantees oil recovery work
That makees goes on smoothly, and reduces workover rig service to oil well number.
In application, the upper end of the deep well pump sealing system is connected to flow string, lower end is connected to shaft bottom.Oil recovery process
In, when 4 uplink of piston of deep well pump, first travelling seal assembly 5 sealing element 4 top of piston head of liquid effect
Lower slide downward is closed, and the liquid in the upper end flow string of piston 4 gives rise to crude oil under the uplink active force of piston 4
Ground, and production manifold is further flowed into, simultaneously as negative pressure is formed in the pump barrel 3 of the upper enforcement deep well pump of piston 4, it is fixed
The sealing element of seal assembly 6 upward sliding under the action of negative pressure is opened, and enters shaft bottom liquid in the pump barrel 3 of deep well pump；
When 4 downlink of piston of deep well pump, the liquid tubing string in pump barrel 3 forces the sealing element slide downward of fixing seal component 6 to be closed,
The liquid tubing string in pump barrel 3 forces the sealing element upward sliding of the first travelling seal assembly 5 to be opened simultaneously, the liquid in pump barrel 3
It replaces into the inner cavity of piston 4, and by the liquid in the inner cavity of piston 4 into flow string.Pass through deep-well pump piston as a result,
4 pump, is evacuated to ground for crude oil again and again.
It is understood that first travelling seal assembly 5 and fixing seal component 6 be all made of it is close mentioned by first aspect
Sealing assembly, and it is respectively provided with the size suitable for deep well pump sealing system, that is to say, that the first travelling 5 He of seal assembly
The structure of fixing seal component 6 is identical, and size can be different.
In above-mentioned deep well pump sealing system, in order to reach better seal effect, it can also be arranged in the inside of piston 4
There is second be fixedly connected with the other end of piston 4 travelling seal assembly 7；Second travelling seal assembly 7 has and the first travelling
The identical structure of seal assembly 5.
It is understood that the first travelling seal assembly 5 and the second travelling seal assembly 7 are located at the both ends of piston 4,
It is moved with the uplink and downlink movement of piston 4, there is synchronous opening and closing operation.That is, when 4 uplink of piston,
First travelling seal assembly 5 and the second travelling seal assembly 7 are closed, when 4 downlink of piston, the first travelling 5 He of seal assembly
Second travelling seal assembly 7 is opened.
In a kind of possible embodiment, the first travelling seal assembly 5 can be set according to the structure of deep well pump sealing system
It is of the same size with the second travelling seal assembly 7, and fixing seal component 6 has the size different from the former two.
In above-mentioned deep well pump sealing system, fixing seal component 6 may be provided at the inside of oil suction chamber screw thread pressure cap 8；
Oil suction chamber screw thread pressure cap 8 is connected to the lower section of pump barrel 3 by pump housing box cupling 9.
It is understood that having fuel feed hole, when 4 uplink of piston, fixing seal component 6 on oil suction chamber screw thread pressure cap 8
It opens, shaft bottom liquid passes through fixing seal component 6, and is entered in pump barrel 3 by the fuel feed hole on oil suction chamber screw thread pressure cap 8.
In above-mentioned deep well pump sealing system, the first travelling seal assembly 5 may be provided at piston oil outlet chamber screw thread pressure cap
10 inside；Piston oil outlet chamber screw thread pressure cap 10 is shorted 11 upper ends for being connected to piston 4 by screw thread.
It is understood that piston oil outlet chamber screw thread pressure cap 10 has oil outlet, when 4 downlink of piston, the first travelling is close
Sealing assembly 5 is opened, and the liquid of pump barrel 3 into the inner cavity of piston 4, and further passes through work by the first travelling seal assembly 5
The oil outlet of plug oil outlet chamber screw thread pressure cap 10 enters in flow string.
In above-mentioned deep well pump sealing system, the second travelling seal assembly 7 be may be provided on piston silk plug 12；Piston silk
Stifled 12 are shorted 13 lower ends for being connected to piston 4 by oil outlet chamber screw thread.
It is understood that being shorted 13 in piston silk plug 12 and oil outlet chamber screw thread is provided with oilhole, to guarantee the second trip
When dynamic sealing assembly 7 is opened, fluid can be passed through.
It is also settable to be somebody's turn to do for the ease of the uplink and downlink in pump barrel 3 of piston 4 in above-mentioned deep well pump sealing system
Sealing system includes the bushing 16 being arranged between piston 4 and pump barrel 3.
In addition, being connected on flow string for the ease of the sealing system, the upper end setting pump head of pump barrel 3 can also be provided at
Screw thread pressure cap 14, and the lower end of oil suction chamber screw thread pressure cap 8 is provided with pump tail box cupling 15.
The above is merely for convenience of it will be understood by those skilled in the art that technical solution of the present invention, not to limit
The present invention.All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in this
Within the protection scope of invention.
Claims (10)
1. a kind of seal assembly, including sealing element (1) and seal receptacle (2)；It is characterized in that,
One end of the sealing element (1) blocks, and the other end is provided with the chamber (102) of opening, and the sealing element (1)
The channel (103) being connected to the chamber (102) is offered on side wall；
The seal receptacle (2) has centre bore (201)；
The sealing element (1) can slide up and down in the centre bore (201) of the seal receptacle (2).
2. seal assembly according to claim 1, which is characterized in that seal receptacle (2) further includes being arranged in the centre bore
(201) sealing ring (202) on inner wall.
3. seal assembly according to claim 1, which is characterized in that set on one end of the closure of the sealing element (1)
It is equipped with limiting stand (101)；
The limiting stand (101) is used to be resisted against the upper surface of the seal receptacle (2).
4. seal assembly according to claim 1, which is characterized in that the oblique top of channel (103) is arranged described
On the side wall of sealing element (1).
5. a kind of deep well pump sealing system, including pump barrel (3) and the piston (4) being located in the pump barrel (3), the piston (4)
Be internally provided with the first travelling seal assembly (5) being fixedly connected with one end of the piston (4), under the pump barrel (3)
Side is connected with fixing seal component (6)；It is characterized in that,
First travelling seal assembly (5) and the fixing seal component (6) are the described in any item sealing groups of right 1-4
Part.
6. deep well pump sealing system according to claim 5, which is characterized in that the inside of the piston (4) is additionally provided with
The second travelling seal assembly (7) being fixedly connected with the other end of the piston (4)；
Second travelling seal assembly (7) has the identical structure with first travelling seal assembly (5).
7. deep well pump sealing system according to claim 5, which is characterized in that fixing seal component (6) setting exists
The inside of oil suction chamber screw thread pressure cap (8)；
The oil suction chamber screw thread pressure cap (8) is connected to the lower section of the pump barrel (3) by pump housing box cupling (9).
8. deep well pump sealing system according to claim 5, which is characterized in that first travelling seal assembly (5) is set
It sets in the inside of piston oil outlet chamber screw thread pressure cap (10)；
The piston oil outlet chamber screw thread pressure cap (10) is shorted the upper end that (11) are connected to the piston (4) by screw thread.
9. deep well pump sealing system according to claim 6, which is characterized in that second travelling seal assembly (7) is set
It sets on piston silk plug (12)；
The piston silk plug (12) is shorted the lower end that (13) are connected to the piston (4) by oil outlet chamber screw thread.
10. deep well pump sealing system according to claim 5, which is characterized in that further include setting in the piston (4) and
Bushing (16) between the pump barrel (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810179528.8A CN110230591A (en) | 2018-03-05 | 2018-03-05 | Seal assembly and deep well pump sealing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810179528.8A CN110230591A (en) | 2018-03-05 | 2018-03-05 | Seal assembly and deep well pump sealing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110230591A true CN110230591A (en) | 2019-09-13 |
Family
ID=67861685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810179528.8A Pending CN110230591A (en) | 2018-03-05 | 2018-03-05 | Seal assembly and deep well pump sealing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110230591A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE875747C (en) * | 1951-08-07 | 1953-05-07 | Andreas Loewe | Automatic valve, especially pressure and suction valve for pumps |
| DE1650583A1 (en) * | 1967-08-18 | 1971-03-11 | Luft U Kaeltetechnik Veb K | Valve plate |
| CN2637703Y (en) * | 2003-07-17 | 2004-09-01 | 中国石油天然气股份有限公司 | Oil pumping sand extraction integrated process tubular column |
| CN201884002U (en) * | 2010-12-10 | 2011-06-29 | 中国石油天然气集团公司 | Drilling downhole check valve |
| CN202645993U (en) * | 2012-04-11 | 2013-01-02 | 盐城薪力园实业有限公司 | Oil well pump with bidirectional oil feeding function |
-
2018
- 2018-03-05 CN CN201810179528.8A patent/CN110230591A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE875747C (en) * | 1951-08-07 | 1953-05-07 | Andreas Loewe | Automatic valve, especially pressure and suction valve for pumps |
| DE1650583A1 (en) * | 1967-08-18 | 1971-03-11 | Luft U Kaeltetechnik Veb K | Valve plate |
| CN2637703Y (en) * | 2003-07-17 | 2004-09-01 | 中国石油天然气股份有限公司 | Oil pumping sand extraction integrated process tubular column |
| CN201884002U (en) * | 2010-12-10 | 2011-06-29 | 中国石油天然气集团公司 | Drilling downhole check valve |
| CN202645993U (en) * | 2012-04-11 | 2013-01-02 | 盐城薪力园实业有限公司 | Oil well pump with bidirectional oil feeding function |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10995587B2 (en) | Reversing valve for hydraulic piston pump | |
| EP3596369B1 (en) | Valve with integral balancing passage | |
| CN204851209U (en) | Fracturing sliding sleeve subassembly | |
| CN105888610A (en) | Arrow-shaped check valve | |
| DE3236536C2 (en) | Hydraulic high pressure pump | |
| CN110230591A (en) | Seal assembly and deep well pump sealing system | |
| CN104912782A (en) | Combined pump barrel small-diameter oil well pump | |
| US10590740B2 (en) | Modified downhole isolation tool having a seating means and ported sliding sleeve | |
| CN103498785A (en) | Fireflooding oil well pump | |
| RU2674843C1 (en) | Pump | |
| RU128896U1 (en) | DEVICE FOR TRANSFER OF WELLS, INCLUDING WATERFILLED, TO OPERATION ON TWO LIFT COLUMNS | |
| CN213298231U (en) | Forced mechanical valve type blowout-preventing oil-well pump | |
| CN208534744U (en) | Hollow gas-tight formula hydraulic feedback oil | |
| CN209569157U (en) | A kind of reciprocating pump hydraulic-end for oil field note medium containing sand | |
| CN202579154U (en) | Polymer injection pump head with adjustable flow rate | |
| CN203214897U (en) | High-pressure self-sealing check valve with low flow resistance | |
| CN206175379U (en) | Hydro -cylinder lid unloads oil pipe way, injection molding machine hydro -cylinder lid and injection molding machine hydro -cylinder | |
| CN212054621U (en) | Oil sleeve communicating valve | |
| CN210622767U (en) | Anti-sticking gas-tight oil-well pump | |
| CN104832132A (en) | Pumping-aiding device of oil pumping rod and sand blocking oil outlet sliding sleeve thereof | |
| CN210265086U (en) | Anti-spraying oil well pump device | |
| CN209688136U (en) | A kind of antiwear pneumatic gate valve | |
| CN109723635A (en) | A kind of reciprocating pump hydraulic-end for oil field note medium containing sand | |
| CN207686663U (en) | Inflatable packer | |
| CN204703859U (en) | Sucker rod helps picking device and the fuel-displaced sliding sleeve of sand block thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190913 |
|
| RJ01 | Rejection of invention patent application after publication |