CN211573748U - Inclined shaft oil well pump - Google Patents
Inclined shaft oil well pump Download PDFInfo
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- CN211573748U CN211573748U CN201922463732.5U CN201922463732U CN211573748U CN 211573748 U CN211573748 U CN 211573748U CN 201922463732 U CN201922463732 U CN 201922463732U CN 211573748 U CN211573748 U CN 211573748U
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Abstract
The utility model provides an inclined shaft oil-well pump, the inside all designs of oil-well pump have the oil feed valve bonnet of taking the spring, go up the oil valve bonnet and go out the oil valve bonnet down, oil feed valve bonnet top is equipped with the dog, and the inside blind hole that is equipped with of dog, the inside backing pin that is equipped with of blind hole, backing pin one end is passed through the third spring and is connected with the dog, the dog other end supports and leans on the oil feed valve ball terminal surface. The guide ribs are designed in the oil inlet valve cover and the oil outlet valve cover, the radial runout amount of the valve ball can be limited, the valve ball can be always kept in a centering state with the valve seat in the axial runout process, the stop pin under the elastic force of the spring is designed at the upper part of the oil inlet valve ball, and the spring or the stop pin is always attached to the surface of the valve ball, so that the valve ball can reset under any inclined angle of a well, and the phenomena of deflection, closing delay, even non-closing and the like of the valve ball under the influence of gravity in a highly-inclined well or a horizontal well are reduced.
Description
Technical Field
The utility model belongs to the technical field of the oil-well pump and specifically relates to an inclined shaft oil-well pump is related to.
Background
At present, a plurality of pumping wells in domestic oil fields are highly deviated wells and horizontal wells, the sand content is high, when an inclined well pump is adopted for exploitation, sand particles often enter the pump to cause sand blocking and sand burying phenomena, even after sand prevention tools such as a sand prevention filter screen and the like are hung at the lower part of an oil well pump, more sand particles still enter the pump, the pump efficiency is reduced, and the pump inspection period is shortened; when the sand-proof oil well pump is adopted, the problems of sand blocking, sand burying and the like can be solved, but the sand-proof oil well pump cannot be suitable for an inclined shaft, and the situations of low pump efficiency, even no oil production and the like caused by improper seating of the ball valve, delayed closing and side leakage often occur. Consequently, must adopt the structure more reasonable, can adapt to inclined vertical well, horizontal well crude oil exploitation, have the inclined shaft oil-well pump of good sand control effect again, nevertheless current inclined shaft sand control pump still has a lot of not enough, mainly shows:
(1) the conventional inclined well oil well pump is usually to improve the details of the structure of the parts on the plunger assembly on the basis of the common inclined well oil well pump, if the constant diameter plunger is adopted or the sand scraping ring is additionally arranged, the sand prevention effect is limited, and especially the sand burying can not be prevented when the pumping is stopped.
(2) Along with the development of a drilling technology, cluster wells, directional wells and horizontal wells are more and more, the inclination of an oil well is continuously increased, the inclination angle of some wells even exceeds 60 degrees, a conventional inclined well sand control pump can only adapt to the inclination angle of the wells below 60 degrees, when the inclination of the wells exceeds 60 degrees, the influence of gravity on a valve ball is increased, and the problems that the valve ball cannot be centered and seated on a valve seat, the closing delay of the valve ball is caused, the side leakage is caused and the like still occur.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main aim at provides an inclined shaft oil-well pump solves the inclined shaft oil pumping and can not prevent that sand from burying and the well head angle degree from exceeding 60 when, and the valve ball receives the influence of gravity to increase, still can appear the unable centering of valve ball and sit on the disk seat, leads to the problem that the ball valve closed lag, edge leakage etc..
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: an oil well pump for an inclined well comprises a plunger assembly and a pump barrel assembly, wherein an oil inlet valve cover, an upper oil outlet valve cover and a lower oil outlet valve cover are arranged inside the pump barrel assembly;
the diameter of a straight cut-off section at the bottom of the oil inlet valve cover is more than or equal to that of the oil inlet valve ball;
so that a larger flow cross section is realized between the oil inlet valve ball and the straight cut-off section through a smaller opening.
In the preferred scheme, a stop block is arranged above the oil inlet valve cover, a blind hole is formed in the stop block, a stop pin is arranged in the blind hole, one end of the stop pin is connected with the stop block through a third spring, and the other end of the stop block abuts against the end face of an oil inlet valve ball.
In the preferred scheme, the pump cylinder assembly comprises a bridge pipe, a middle coupling and a two-way joint, a pump cylinder lengthening cylinder is arranged inside the pump cylinder assembly, a sand setting annulus is formed between the pump cylinder lengthening cylinder and the bridge pipe, a short pump cylinder is arranged at the upper end of the pump cylinder lengthening cylinder, and the short pump cylinder and the long plunger are in sliding seal;
an oil inlet valve cover is arranged inside the middle coupling, the oil inlet valve cover and the two-way connector form a shakeout annular space, and the outer circumference of the stop block is of a conical surface structure;
when sand in the pump cavity is deposited downwards, the sand can slide into a sand falling ring space outside the oil inlet valve cover along the outer conical surface of the stop block.
In a preferable scheme, the outer diameter of the stop block is larger than the diameter of an oil outlet of the oil inlet valve cover.
In the preferred scheme, the lower end of the pump cylinder lengthening cylinder is in threaded connection with the middle coupling, and the short pump cylinder at the upper end of the pump cylinder lengthening cylinder is connected with the bridge pipe through a support ring.
In the preferred scheme, a sand setting tail pipe is arranged below the two-way connector, the sand setting tail pipe is communicated with the two-way connector through a flow passage, and the end part of the sand setting tail pipe is provided with a plug.
In the preferred scheme, last oil outlet valve ball in the long plunger is equipped with oil outlet valve cover, goes up the inside first spring that is equipped with of oil outlet valve cover, and first spring one end supports and leans on last oil outlet valve cover, and the other end supports and leans on last oil outlet valve ball.
In the preferred scheme, the lower oil outlet valve ball in the long plunger is equipped with down the oil outlet valve bonnet, and the inside second spring that is equipped with of lower oil outlet valve bonnet, second spring one end support by on the oil outlet valve bonnet down, and the other end supports by on the oil outlet valve ball down.
In the preferred scheme, go up the oil valve bonnet and go out oil valve bonnet inside and be equipped with a plurality of direction muscle structures down, establish on lower oil valve ball and the last oil valve ball and slide in the direction muscle.
In the preferred scheme, be equipped with a plurality of inlet ports on the bi-pass connects.
The utility model provides a slant well oil-well pump, this pump have carried out the innovative sand control structural design who adapts to the slant well, simple structure, reliable, and application scope is wide, can adapt to oblique straight well, horizontal well crude oil exploitation, possess good sand control effect again the utility model discloses following advantage has been possessed:
the sand prevention pump breaks through the structural limitation of the common inclined shaft sand prevention pump, sand prevention structural design is carried out on the upper portion and the lower portion of the pump, a large sand setting space is provided, the sand prevention pump is very suitable for an inclined straight well and a horizontal well with large sand content, and compared with the existing common inclined shaft sand prevention pump, the sand prevention pump is simpler in structure, better in reliability and longer in service life.
The upper part of the pump adopts a bridge pipe design, the bridge pipe not only plays a role in protecting the pump barrel, but also can bear the external force load of underground tools such as a sand setting tail pipe or a packer and the like, and the pump barrel is prevented from being bent, deformed and clamped under the action of axial or radial force in an inclined well section.
Because the short pump barrel and the pump barrel lengthening barrel are connected and fixed on the middle coupling through threads, the short pump barrel is designed to be a cantilever structure, the short pump barrel is supported through the supporting ring in the circumferential direction, and the supporting ring has a small gap with the inner hole of the bridge pipe, so that the short pump barrel is in a slight floating state, the force cannot be held between the pump barrel and the plunger, rigid eccentric wear is formed, and pump leakage and pump efficiency are reduced.
The outer diameter of the upper oil outlet valve ball cover is larger than the diameter of the long plunger, and the liquid outlet hole of the upper oil outlet valve ball cover is used for lateral oil outlet, when sand grains fall on the valve cover in an oil pipe at the upper part of the oil well pump, the sand grains can slide to annular sand settling spaces at two sides along the conical surface at the upper part of the valve cover and can not directly fall into the valve cover or a matching surface between the pump barrel and the plunger, so that the phenomenon that sand grains enter the pump to cause sand blocking or deposit on the valve cover to cause sand burying is reduced.
The design of the sand prevention oil inlet valve ball with the sand setting tail pipe is adopted, the stop block with the conical surface is designed on the upper portion of the oil inlet valve cover, the maximum outer diameter of the stop block is larger than the diameter of an oil outlet of the valve cover, the oil outlet of the valve cover is shielded, when sand-containing crude oil enters a pump cavity through the oil inlet valve ball, sand deposited in the pump cavity cannot directly fall into the oil inlet valve cover but fall onto the conical surface of the stop block, slides into annular spaces on two sides along the conical surface under the action of gravity, and then falls into the sand setting tail pipe through an axial hole of the two-way connector, so that the sand is prevented from being deposited in the oil inlet valve cover and interfering the normal work of.
The oil inlet valve cover and the oil outlet valve cover are internally provided with guide ribs which can limit the radial runout amount of the valve ball to keep the valve ball in a centering state with the valve seat all the time in the axial runout, wherein the oil outlet valve cover is internally provided with a return spring, the upper part of the oil inlet valve ball is provided with a stop pin under the action of the spring force, the spring or the stop pin is always attached to the surface of the valve ball, the pretightening force of the spring is greater than the weight of the valve ball, so that the valve ball can reset under any inclined angle of a well, when the ball valve is closed, the valve ball can be timely seated on the valve seat under the action of the spring force, and the phenomena of deflection, closing delay, even non-closing and the like of the valve ball under the influence of gravity in a highly-inclined well.
Drawings
The invention will be further explained with reference to the following figures and examples:
FIG. 1 is a general block diagram of the present invention;
FIG. 2 is a partially enlarged view of the structure of the guide rib of the present invention;
FIG. 3 is an enlarged structural view taken at FIG. 1A of the present invention;
FIG. 4 is a view of a prior art opening valve ball of the present invention;
FIG. 5 is a view of the open structure of the fuel inlet valve ball of the present invention;
in the figure: an upper coupling 1; a support ring 2; a short pump barrel 3; a bridge pipe 4; a pump cylinder lengthening cylinder 5; a middle coupling 6; a two-way joint 7; a sand setting tail pipe 8; a plug 9; an upper oil outlet valve ball cover 10; a first spring, an upper outlet valve ball 12; a long plunger 13; a lower oil outlet valve cover 14; a second spring 15; a lower oil outlet valve ball 16; a stopper 17; a third spring 18; a catch pin 19; an oil inlet valve ball 20; an oil inlet valve cover 21; an oil inlet hole 22; a shakeout annulus 23; the guide ribs 24; and an overflow hole 25.
Detailed Description
Example 1
As shown in figures 1-5, a sand control oil-well pump of inclined shaft, including plunger assembly and pump barrel assembly, the pump barrel assembly includes gap bridge pipe 4, middle coupling 6 and bi-pass joint 7, and pump barrel assembly inside is equipped with pump barrel extension section of thick bamboo 5, forms the sand setting annulus between pump barrel extension section of thick bamboo 5 and the gap bridge pipe 4, 5 upper ends of pump barrel extension section of thick bamboo are equipped with short pump barrel 3, short pump barrel 3 and long plunger 13 sliding seal. With the structure, as shown in fig. 1, when sand particles in an upper oil pipe of the oil well pump fall on the upper oil outlet valve cover 10, the sand particles can slide into annular sand settling spaces on two sides along the upper conical surface of the upper oil outlet valve cover 10, and can not directly fall into the upper oil outlet valve cover 10 or a matching surface between the pump barrel and the long plunger 13, so that sand particles entering the pump to cause sand jamming or deposit on the valve cover to cause sand burying phenomena are reduced.
An oil inlet valve cover 21 is arranged inside the middle coupling 6, the oil inlet valve cover 21 and the two-way connector 7 form a shakeout annular space 23, a stop block 17 is arranged above the oil inlet valve cover 21, the outer annular space of the stop block 17 is of a conical surface structure, and sand grains in the pump cavity can slide down to the space of the shakeout annular space 23 outside the oil inlet valve cover 21 along the outer conical surface of the stop block 17 when depositing downwards. According to the structure, the stop block 17 with the conical surface is designed on the upper portion of the oil inlet valve cover 21, the maximum outer diameter of the stop block 17 is larger than the diameter of an oil outlet of the oil inlet valve cover 21, the oil outlet of the oil inlet valve cover 21 is shielded, when sand-containing crude oil enters a pump cavity through the oil inlet valve cover 21, sand deposited in the pump cavity cannot directly fall into the oil inlet valve cover 21 but falls onto the conical surface of the stop block, slides into the sand falling annulus 23 on two sides along the conical surface under the action of gravity, and then falls into the sand falling tail pipe 8 through the axial hole of the two-way connector 7, so that sand is prevented from being deposited in the oil inlet valve cover 21 and interfering the normal work of an oil.
The oil inlet valve cover 21 is bowl-shaped, the diameter of a straight cut-off section at the bottom of the oil inlet valve cover 21 is larger than or equal to that of a valve ball, and the minimum opening of the valve ball and the straight cut-off section reaches the maximum through-flow section. From this structure, as the structure shown in fig. 3, adopt bowl structure, have straight part in the section with the oil inlet valve ball 20 end, the straight section of similar bowl bottom is enough to make the minimum opening reach the biggest through-flow cross section in the moment of opening oil inlet valve ball 20, and oil spouts from bowl shape periphery.
In the preferred scheme, a plurality of direction muscle 24 are equipped with in the oil inlet valve cover 21, and oil inlet valve ball 20 slides through direction muscle 24 and establishes in the inside of oil inlet valve cover 21. With the structure, the guide ribs are arranged in the oil inlet valve cover 21 and the oil outlet valve cover, so that the radial bounce amount of the valve ball can be limited, and the valve ball can be always kept in a centering state with the valve seat in axial bounce.
In the preferred scheme, the inside blind hole that is equipped with of dog 17, the inside backing pin 19 that is equipped with of blind hole, backing pin 19 one end is connected with dog 17 through third spring 18, the other end of dog 17 supports and leans on oil feed valve ball 20 terminal surface. According to the structure, the description of the upper part is combined, wherein the third springs 18 are designed in the oil inlet valve cover 21, the stop pins 19 under the action of the elastic force of the springs are designed at the upper part of the oil inlet valve cover 21, the springs or the stop pins 19 are always attached to the surfaces of the valve balls, and the pretightening force of the third springs 18 is greater than the weight of the valve balls, so that the valve balls can reset under any inclined angle of a well, and when the ball valves are closed, the valve balls can be timely seated on the valve seats under the action of the spring force, so that the phenomena of deflection, closing delay, even non-closing and the like caused by the influence of gravity of the valve balls in a highly-inclined well or a horizontal well are.
In a preferable scheme, the outer diameter of the stop block 17 is larger than the diameter of an oil outlet of the oil inlet valve cover 21. From this structure, the design of oil feed valve bonnet 21 upper portion has the dog 17 of taking the conical surface, and the dog 17 maximum external diameter is greater than oil-out diameter of oil feed valve bonnet 21, has the effect of sheltering from to oil-out of oil feed valve bonnet 21.
In the preferred scheme, the lower end of the pump cylinder lengthening cylinder 5 is in threaded connection with the middle coupling 6, and the short pump cylinder 3 at the upper end of the pump cylinder lengthening cylinder 5 is connected with the bridge pipe 4 through the support ring 2. According to the structure, the short pump barrel 3 and the pump barrel lengthening barrel 5 are fixedly connected with the middle coupling 6 through threads, and are designed to be cantilever structures, the short pump barrel 3 is supported through the supporting ring 2 in the circumferential direction, and the supporting ring 2 and the inner hole of the bridge pipe 4 are small in gap, so that the short pump barrel 3 is in a slight floating state, the force cannot be held between the pump barrel and the plunger, rigid eccentric wear is formed, and pump leakage and pump efficiency are reduced.
The oil inlet valve cover 21 is bowl-shaped, and the diameter of a straight cut-off section at the bottom of the oil inlet valve cover 21 is larger than or equal to that of a valve ball, so that a larger through-flow section is realized between the oil inlet valve ball 20 and the straight cut-off section through a smaller opening. From this structure, as the structure shown in fig. 3, adopt bowl-shaped structure, have straight part at the section with the stop of fuel inlet valve ball 20, the straight section of bowl bottom is similar, is enough to make the less opening reach great through-flow cross section in the one moment of opening fuel inlet valve ball 20, and oil spouts from bowl shape periphery.
With the configuration shown in fig. 4, a larger flow is only achieved when the existing ball 26 is raised to a distance in the middle of the existing cage 27, where the distance in the dotted line is the travel distance. In this scheme, only need less opening, fluid is from the peripheral straight partial blowout of bowl form, and it is that the through-flow effect is better.
In the preferred scheme, an upper oil outlet valve cover 10 is arranged above an upper oil outlet valve ball 12 in a long plunger 13, a first spring 11 is arranged inside the upper oil outlet valve cover 10, one end of the first spring 11 abuts against the upper oil outlet valve cover 10, and the other end of the first spring abuts against the upper oil outlet valve ball 12. By the structure, the first spring 11 is designed at the upper part of the upper oil outlet valve cover 10, the first spring 11 is always attached to the surface of the valve ball, the pretightening force of the first spring 11 is larger than the weight of the valve ball, so that the valve ball can reset under any well inclination angle, and when the ball valve is closed, the valve ball can be timely seated on the valve seat under the action of the spring force, so that the phenomena of deflection, closing delay, even non-closing and the like caused by the influence of gravity on the valve ball in a highly-inclined well or a horizontal well are reduced.
In a preferable scheme, a lower oil outlet valve cover 14 is arranged above a lower oil outlet valve ball 16 in the long plunger 13, a second spring 15 is arranged inside the lower oil outlet valve cover 14, one end of the second spring 15 abuts against the lower oil outlet valve cover 14, and the other end of the second spring abuts against the lower oil outlet valve ball 16. By the structure, the second spring 15 is designed on the upper portion of the lower oil outlet valve cover 14, the second spring 15 is always attached to the surface of the valve ball, the pretightening force of the second spring 15 is larger than the weight of the valve ball, so that the valve ball can reset under any well inclination angle, and when the ball valve is closed, the valve ball can be timely seated on the valve seat under the action of the spring force, so that the phenomena of deflection, closing delay, even non-closing and the like caused by the influence of gravity on the valve ball in a highly-inclined well or a horizontal well are reduced.
In a preferable scheme, guide rib structures are arranged inside the upper oil outlet valve cover 10 and the lower oil outlet valve cover 14, and the lower oil outlet valve ball 16 and the upper oil outlet valve ball 12 are arranged inside the guide ribs to slide. Therefore, the structure and the oil inlet valve cover 21 and the oil outlet valve cover are internally provided with guide ribs, and the radial jumping quantity of the valve ball can be limited, so that the valve ball is always kept in the same centering state as the valve seat in the axial jumping process. The phenomena of deviation, closing delay, even non-closing and the like of the valve ball under the influence of gravity in a highly deviated well or a horizontal well are reduced.
In a preferred scheme, a plurality of oil inlet holes 22 are formed in the two-way joint 7. With this structure, the oil inlet hole 22 serves for an oil intake function.
Example 2
Further explained by combining with embodiment 1, as shown in fig. 1 to 5, the pump barrel assembly is composed of an upper coupling 1, a support ring 2, a short pump barrel 3, a bridge pipe 4, a pump barrel lengthening barrel 5, an intermediate coupling 6, a two-way joint 7, a sand setting tail pipe 8, a plug 9, a stop block 17, a third spring 18, a stop pin 19, an oil inlet valve ball 20 and an oil inlet valve cover 21.
The plunger assembly consists of an upper oil outlet valve cover 10, a first spring 11, an upper oil outlet valve ball 12, a long plunger 13, a lower oil outlet valve cover 14, a second spring 15 and a lower oil outlet valve ball 16
When in downhole operation, the upper end of the pump cylinder assembly is connected with the coupling 1 to be connected with an oil pipe, and is lowered into a designed position in an oil well along with an oil pipe column, then the upper end of the plunger assembly is connected with the sucker rod, and is lowered into the bottom of the oil pipe along with the sucker rod column to realize pump collision with the pump cylinder assembly.
During pumping operation, the plunger assembly is driven by the sucker rod to reciprocate up and down in the pump barrel assembly.
During the upward stroke, the plunger assembly moves upwards, the upper oil outlet valve ball 12 and the lower oil outlet valve ball 16 are closed, the volume of a pump cavity at the lower part of the plunger assembly is increased, the pressure is reduced, the oil inlet valve ball 20 is opened under the action of sinking pressure, and crude oil enters the pump cavity through an oil inlet 22 at the side surface of the two-way joint 7. At the moment, sand particles entering the pump cavity along with the crude oil are deposited into an annular space of a sand falling annular space 23 on the outer side of the sand prevention oil inlet valve ball due to the action of gravity and finally fall into a sand falling tail pipe 8 through an axial overflowing hole of the two-way joint 7.
During the down stroke, the plunger assembly moves downwards, the volume of a pump cavity at the lower part of the plunger assembly is reduced, the pressure is increased, and the oil inlet valve ball 20 is closed under the action of the oil pressure in the pump cavity. Meanwhile, the upper and lower oil outlet valve balls 12 and 16 are opened under the action of oil pressure in the pump cavity, the oil pipe cavity is communicated with the pump cavity, crude oil in the pump cavity is extruded out and enters the oil pipe on the upper part of the plunger assembly, and at the moment, sand grains entering the oil pipe through the plunger assembly fall into a sand settling ring under the action of gravity.
The above-mentioned embodiments are merely preferred embodiments of the present invention, and should not be considered as limitations of the present invention, and the protection scope of the present invention should be defined by the technical solutions described in the claims, and includes equivalent alternatives of technical features in the technical solutions described in the claims. Namely, equivalent alterations and modifications within the scope of the invention are also within the scope of the invention.
Claims (10)
1. An inclined shaft oil-well pump, characterized by: the plunger pump comprises a plunger assembly and a pump barrel assembly, wherein an oil inlet valve cover (21), an upper oil outlet valve cover (10) and a lower oil outlet valve cover (14) are arranged in the pump barrel assembly, a plurality of guide ribs (24) are arranged on the inner walls of the oil inlet valve cover (21), the upper oil outlet valve cover (10) and the lower oil outlet valve cover (14), and an oil inlet valve ball (20) is arranged in the oil inlet valve cover (21) in a sliding manner through the guide ribs (24);
the oil inlet valve cover (21) is bowl-shaped, and the diameter of a straight cut-off section at the bottom of the oil inlet valve cover (21) is more than or equal to that of an oil inlet valve ball (20);
so that a larger flow cross section is achieved between the inlet valve ball (20) and the straight cut-off section with a smaller opening.
2. The slant well oil pump of claim 1, wherein: the oil inlet valve cover is characterized in that a stop block (17) is arranged above the oil inlet valve cover (21), a blind hole is formed in the stop block (17), a stop pin (19) is arranged in the blind hole, one end of the stop pin (19) is connected with the stop block (17) through a third spring (18), and the other end of the stop block (17) is abutted against the end face of an oil inlet valve ball (20).
3. The slant well oil pump of claim 2, wherein: the pump cylinder assembly comprises a bridge pipe (4), a middle coupling (6) and a two-way joint (7), a pump cylinder lengthening cylinder (5) is arranged inside the pump cylinder assembly, a sand setting annulus is formed between the pump cylinder lengthening cylinder (5) and the bridge pipe (4), a short pump cylinder (3) is arranged at the upper end of the pump cylinder lengthening cylinder (5), and the short pump cylinder (3) and a long plunger (13) are in sliding seal;
an oil inlet valve cover (21) is arranged inside the middle coupling (6), the oil inlet valve cover (21) and the two-way connector (7) form a shakeout annular space (23), and the outer circumference of the check block (17) is of a conical surface structure;
when sand in the pump cavity is deposited downwards, the sand can slide into a shakeout annulus (23) on the outer side of the oil inlet valve cover (21) along the outer conical surface of the stop block (17).
4. The slant well oil pump of claim 3, wherein: the outer diameter of the stop block (17) is larger than the diameter of an oil outlet of the oil inlet valve cover (21).
5. The slant well oil pump of claim 3, wherein: the lower end of the pump cylinder lengthening cylinder (5) is in threaded connection with the middle coupling (6), and the short pump cylinder (3) at the upper end of the pump cylinder lengthening cylinder (5) is connected with the bridge pipe (4) through the supporting ring (2).
6. The slant well oil pump of claim 3, wherein: two-way joint (7) below is equipped with sand setting tail pipe (8), sand setting tail pipe (8) and two-way joint (7) are through overflowing hole (25) intercommunication, sand setting tail pipe (8) tip is equipped with end cap (9).
7. The slant well oil pump of claim 3, wherein: last oil outlet valve ball (12) top in long plunger (13) is equipped with oil outlet valve cover (10), goes up oil outlet valve cover (10) inside and is equipped with first spring (11), and first spring (11) one end supports and leans on last oil outlet valve cover (10), and the other end supports and leans on last oil outlet valve ball (12).
8. The slant well oil pump of claim 3, wherein: a lower oil outlet valve cover (14) is arranged above a lower oil outlet valve ball (16) in the long plunger (13), a second spring (15) is arranged inside the lower oil outlet valve cover (14), one end of the second spring (15) abuts against the lower oil outlet valve cover (14), and the other end of the second spring abuts against the lower oil outlet valve ball (16).
9. The slant well pump of claim 8, wherein: go up oil outlet valve cover (10) and be equipped with a plurality of direction muscle structures down in oil outlet valve cover (14), establish on lower oil outlet valve ball (16) and last oil outlet valve ball (12) and slide in the direction muscle.
10. The slant well oil pump of claim 3, wherein: and a plurality of oil inlet holes (22) are formed in the two-way joint (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922463732.5U CN211573748U (en) | 2019-12-31 | 2019-12-31 | Inclined shaft oil well pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922463732.5U CN211573748U (en) | 2019-12-31 | 2019-12-31 | Inclined shaft oil well pump |
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| Publication Number | Publication Date |
|---|---|
| CN211573748U true CN211573748U (en) | 2020-09-25 |
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ID=72553296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922463732.5U Active CN211573748U (en) | 2019-12-31 | 2019-12-31 | Inclined shaft oil well pump |
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| Country | Link |
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| CN (1) | CN211573748U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110966169A (en) * | 2019-12-31 | 2020-04-07 | 中船重工中南装备有限责任公司 | Sand-proof oil well pump for inclined shaft |
| CN111043018A (en) * | 2019-12-31 | 2020-04-21 | 中船重工中南装备有限责任公司 | Inclined shaft oil well pump |
-
2019
- 2019-12-31 CN CN201922463732.5U patent/CN211573748U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110966169A (en) * | 2019-12-31 | 2020-04-07 | 中船重工中南装备有限责任公司 | Sand-proof oil well pump for inclined shaft |
| CN111043018A (en) * | 2019-12-31 | 2020-04-21 | 中船重工中南装备有限责任公司 | Inclined shaft oil well pump |
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