CN209976754U - Rail type load shedding device - Google Patents
Rail type load shedding device Download PDFInfo
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- CN209976754U CN209976754U CN201920594442.1U CN201920594442U CN209976754U CN 209976754 U CN209976754 U CN 209976754U CN 201920594442 U CN201920594442 U CN 201920594442U CN 209976754 U CN209976754 U CN 209976754U
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Abstract
The utility model discloses a rail mounted subtracts carries ware, its characterized in that: the plunger pump comprises a pump barrel assembly, a plunger assembly and a plunger assembly joint connected with the plunger assembly, wherein the pump barrel assembly is sleeved on the outer side of the plunger assembly, and the plunger assembly joint is connected with the plunger assembly when in use. The utility model provides a rail mounted subtracts carries ware can with three equipment supporting uses of taking out, under the condition that does not play the plunger, makes the sucker rod be connected with the plunger and throw off, should subtract and carry the ware and be particularly suitable for the oil-well pump footpath of oil-well pump and be greater than the oil well of oil-well pump footpath, and this equipment can effectively reduce beam-pumping unit hanging point load, realizes energy-conserving, increase purpose, is worth using widely.
Description
Technical Field
The utility model belongs to the oil is equipped the design and manufacture field, concretely relates to rail mounted subtracts carries ware.
Background
In the oil production well of the oil field, as the oil well continues to be produced, the underground oil level is reduced, and the yield of the oil well is gradually reduced. The oil pumping unit has the advantages that a part of oil wells are deep, the load of the oil pumping unit is large, the depth of the underground oil well pump is limited under the condition of full load of the oil pumping unit, and people can only select a small-specification oil well pump with low pump capacity to pump crude oil in order to enable the underground oil well pump to further enter under the condition of no overload, so that the oil production yield of the oil wells is obviously limited. Therefore, it is desirable to provide a load reducing device for a pumping unit, which can not increase the load of the pumping unit, not reduce the pumping amount of the pumping unit, and can also enable the pumping unit to freely descend, and the device is applied to the deep oil well oil extraction of an oil field.
CN2856483 discloses an oil-well pump deloading device, which realizes the function of reducing the suspension point load of an oil pumping unit, but the deloading device is easy to deviate when in butt joint with a sucker rod string, is not easy to butt joint, is not firm in connection, and has poor effect when in actual use.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a track type deloading ware realizes effectively reducing beam-pumping unit hanging point load and energy-conserving, the purpose of increasing efficiency to the objective current situation that beam-pumping unit load is big among the deep oil well in the oil field, the oil-well pump is gone into the degree of depth and is limited, the oil recovery is low under the oil-well pump, the utility model aims at providing a track type deloading ware.
The purpose of the utility model is realized through the following technical scheme.
A rail type load reducer comprises a pump cylinder assembly, a plunger assembly and a plunger assembly joint butted with the plunger assembly, wherein the pump cylinder assembly is sleeved at the outer side of the plunger assembly, and when the rail type load reducer is used, the plunger assembly joint is connected with the plunger assembly; the plunger assembly comprises a plunger butting cylinder and a lower spiral joint, and the lower spiral joint is sleeved on the plunger butting cylinder; the plunger assembly joint comprises a sucker rod joint, a middle spiral joint and an upper spiral joint which are sequentially connected from top to bottom; wherein, middle screwed joint, last screwed joint, plunger butt joint cylinder and lower screwed joint constitute track butt joint structure.
The plunger assembly further comprises a connector, an upper oil outlet connector, a small plunger and a large plunger, and the plunger is connected with the cylinder in a butt joint mode, the connector, the upper oil outlet connector, the small plunger and the large plunger are sequentially connected from top to bottom.
The lower part of the lower spiral connector is provided with a spring, the lower end of the spring is provided with a baffle ring, the spring and the baffle ring are sleeved on the plunger butting cylinder body, and the lower end of the baffle ring is tightly abutted to the upper end of the connector.
The pump barrel assembly comprises a release joint, an oil pipe, a connecting collar, a ventilation joint, a large pump barrel and a lower joint which are sequentially connected from top to bottom, and the ventilation joint is also connected with a small pump barrel; when the pump barrel assembly is sleeved on the outer side of the plunger assembly, the outer side of the small plunger is tightly abutted against the inner side of the small pump barrel, and the outer side of the large plunger is tightly abutted against the inner side of the large pump barrel.
And through holes are formed in the circumferential direction of the air exchange joint.
The inner side of the release joint is provided with a step, and the inner size of the step is smaller than the maximum outer diameter of the lower spiral joint.
The plunger butt joint cylinder is provided with a flat key, the inner side of the lower spiral joint is provided with a key groove, and the lower spiral joint cannot rotate relative to the plunger butt joint cylinder under the clamping effect of the key groove and the flat key.
The top of the plunger abutting joint cylinder is provided with a conical head.
The top conical head tip of the plunger butting cylinder is connected with the flat inner hole of the middle spiral joint in a cross manner.
And the upper spiral joint and the lower spiral joint are provided with spiral track surfaces which are matched with each other.
The utility model has the advantages that: the utility model provides a rail mounted subtracts carries ware can with three equipment supporting uses of taking out, under the condition that does not play the plunger, makes the sucker rod be connected with the plunger and throw off, should subtract and carry the ware and be particularly suitable for the oil-well pump footpath of oil-well pump and be greater than the oil well of oil-well pump footpath, and this equipment can effectively reduce beam-pumping unit hanging point load, realizes energy-conserving, increase purpose, is worth using widely.
Drawings
FIG. 1 is a cross-sectional view of an embodiment pump barrel assembly and plunger assembly.
FIG. 2 is a cross-sectional view of an embodiment plunger assembly fitting.
FIG. 3 is a position view of the plunger assembly prior to mating with the plunger assembly joint.
FIG. 4 is a position view of the plunger assembly after interfacing with the plunger assembly joint.
Fig. 5 is a connection diagram of the upper screw joint, the lower screw joint and the plunger docking cylinder.
Fig. 6 is a position diagram of the plunger docking cylinder after docking with the middle screw joint.
In the figure, 1 is a plunger butting cylinder, 2 is a lower spiral joint, 3 is a spring, 4 is a flat key, 5 is a baffle ring, 6 is a connecting head, 7 is an upper oil outlet joint, 8 is a small plunger, 9 is a large plunger, 10 is a release joint, 11 is an oil pipe, 12 is a small pump barrel, 13 is a connecting collar, 14 is a ventilation joint, 15 is a large pump barrel, 16 is a lower joint, 17 is a sucker rod joint, 18 is an intermediate spiral joint, and 19 is an upper spiral joint.
Detailed Description
Examples
As shown in figures 1-6, the rail-type deloading device is used for reducing the suspension point load of an oil pumping unit during oil extraction in an oil field and is mainly used for the condition that the pump diameter of an oil well pump is larger than the inner diameter of an oil pipe on the pump. The plunger pump comprises a pump barrel assembly, a plunger assembly and a plunger assembly joint butted with the plunger assembly, wherein the pump barrel assembly is sleeved at the outer side of the plunger assembly, and the plunger assembly joint is butted with the plunger assembly when in use.
The pump cylinder assembly comprises a release joint 10, an oil pipe 11, a connecting collar 13, a ventilation joint 14, a small pump cylinder 12, a large pump cylinder 15 and a lower joint 16, wherein a through hole is formed in the circumferential direction of the ventilation joint 14. The lower inside of the release joint 10 is connected to the upper outside of the tubing 11, the lower outside of the tubing 11 is connected to the upper inside of the connection collar 13, the lower inside of the connection collar 13 is connected to the upper outside of the ventilation joint 14, the upper inside of the ventilation joint 14 is connected to the lower outside of the small pump cylinder 12, the lower inside of the ventilation joint 14 is connected to the upper outside of the large pump cylinder 15, and the lower outside of the large pump cylinder 15 is connected to the upper inside of the lower joint 16.
The small pump barrel 12, the air exchange joint 14 and the large pump barrel 15 in the pump barrel assembly form an air exchange structure, and the structure can provide an upward lifting force and achieve the purpose of reducing the load of a suspension point of the pumping unit.
The plunger assembly comprises a plunger butting cylinder 1, a lower spiral joint 2, a connector 6, an upper oil outlet joint 7, a small plunger 8 and a large plunger 9, wherein the outer side of the lower part of the plunger butting cylinder 1 is connected with the inner side of the upper part of the connector 6, the outer side of the lower part of the connector 6 is connected with the inner side of the upper part of the upper oil outlet joint 7, the inner side of the lower part of the upper oil outlet joint 7 is connected with the outer side of the upper part of the small plunger 8, and the outer side of the lower part of the small plunger 8 is connected with the inner side of the.
Lower screwed joint 2 cup joints on plunger butt joint cylinder 1, and the below of lower screwed joint 2 is provided with spring 3, and spring 3 cup joints on plunger butt joint cylinder 1, and the lower extreme of spring 3 is provided with fender ring 5, keeps off ring 5 and cup joints on plunger butt joint cylinder 1, and keeps off the lower extreme of ring 5 and closely offsets with the upper end of connector 6.
Further, be provided with flat key 4 on the plunger butt joint cylinder 1, the inboard of lower screwed joint 2 is provided with the keyway, and lower screwed joint 2 can not take place relative rotation with plunger butt joint cylinder 1 through the joint effect of keyway and flat key 4.
When the pump barrel assembly is sleeved outside the plunger assembly, the outer side of the small plunger 8 is tightly abutted against the inner side of the small pump barrel 12, and the outer side of the large plunger 9 is tightly abutted against the inner side of the large pump barrel 15; the inside of the release joint 10 is provided with a step, and the inner dimension of the step is smaller than the maximum outer diameter of the lower screw joint 2.
The plunger assembly joint comprises a sucker rod joint 17, a middle spiral joint 18 and an upper spiral joint 19, wherein the lower outer side of the sucker rod joint 17 is connected with the upper inner side of the middle spiral joint 18, and the lower outer side of the middle spiral joint 18 is connected with the inner side of the upper spiral joint 19.
When the plunger assembly is in butt joint with the plunger assembly joint, the middle spiral joint 18, the upper spiral joint 19, the plunger butt joint cylinder 1 and the lower spiral joint 2 form a track butt joint structure, so that the large-pump-diameter oil well pump can normally work under the condition that the pump diameter is larger than the inner diameter of the oil pipe on the pump, the upper sucker rod, the deloading device plunger and the lower sucker rod can be in butt joint and separated, and the underground oil well pump can normally pump crude oil.
Furthermore, the top of the plunger butting cylinder body 1 is provided with a conical head, the tip of the conical head at the top of the plunger butting cylinder body 1 is in cross connection with the flat inner hole of the middle spiral joint 18, and the upper spiral joint 19 and the lower spiral joint 2 are milled with mutually matched spiral track surfaces.
The utility model discloses a working process does: the track-type load shedding device of the present embodiment is provided in accordance with the above-described connection relationship. As shown in fig. 1, after the release joint 10 is connected to the tubing string, the plunger assembly is lowered into the oil well together with the pump barrel assembly because the inner dimension of the step of the release joint 10 is smaller than the maximum outer diameter of the lower screw joint 2, which is mainly used when the pump diameter of the oil well pump is larger than the inner diameter of the oil pipe on the pump.
As shown in fig. 1-6, when a sucker rod string connected with the pumping unit is connected with a sucker rod joint 17 and then is put into an oil well, when an upper spiral joint 19 is close to a lower spiral joint 2, as shown in fig. 3, two spiral tracks are mutually butted, and as the sucker rod string is continuously lowered, the spiral surface of the upper spiral joint 19 and the spiral track surface of the lower spiral joint 2 are mutually rubbed; at the moment, the sucker rod string connected with the oil pumping unit cannot rotate, and the lower spiral joint 2 drives the plunger butting column body 1 and the following components to start rotating; when the upper screw joint 19 and the lower screw joint 2 are put down to positions, as shown in fig. 4, the two spiral surface tracks are mutually staggered, and the position of the conical head at the top of the plunger abutting cylinder 1 and the relative position of the middle screw joint 19 are shown in fig. 6, so that the oil pumping unit sucker rod string and the deloading device plunger assembly are successfully abutted.
In the process, the upper spiral joint 19 and the lower spiral joint 2 are both milled with spiral track surfaces, and the two spiral track surfaces play a role in track butt joint when a sucker rod string connected with the pumping unit is in butt joint with the deloading device plunger assembly, so that the connection accuracy and reliability of the sucker rod string connected with the pumping unit and the deloading device plunger assembly are ensured.
In the process, the flat key 4 between the lower spiral joint 2 and the plunger butting cylinder 1 bears huge torque, and the lower spiral joint and the plunger butting cylinder are ensured not to rotate mutually.
In the process, the conical tip at the top of the plunger butting cylinder body 1 is in cross connection with the flat inner hole of the middle spiral joint 18, so that the pumping rod string connected with the pumping unit can pull the plunger to normally work.
As shown in fig. 1, when the rod string connected with the pumping unit is successfully connected with the plunger assembly, the pumping unit starts to reciprocate up and down, when the pumping rod string connected with the pumping unit pulls the plunger assembly upwards, the pumping rod string connected with the pumping unit applies an upward force to the plunger assembly, due to the frictional movement of the plunger assembly between the small pump barrel 12 and the large pump barrel 15, when the plunger assembly moves upwardly, the upper part of the small plunger 8 and the lower part of the large plunger 9 are communicated with an oil pipe 11 to bear the high-pressure load of a liquid column of the oil pipe 11, the upper part of the large plunger 9 is communicated with an oil sleeve annulus, the annular area at the upper part of the large plunger 9 bears the low pressure load of the oil sleeve annulus, the three loads interact with each other, and finally the plunger assembly bears an upward lifting force, the size of the oil pipe is equal to the acting force of the oil pipe 11 liquid column on the area difference of the large plunger 9 and the small plunger 8, thereby achieving the purpose of reducing the suspension point load of the oil pumping unit.
In the above process, the ventilation joint 14 is provided with a through hole, i.e. a breathing hole, in the circumferential direction, for communicating with the oil jacket annulus.
In the process, the small plunger 8, the large plunger 9, the small pump barrel 12 and the large pump barrel 15 can form an upward lifting force in the reciprocating motion of the plunger assembly, so that the load of a suspension point of the oil pumping unit is reduced.
The above description is only a preferred embodiment of the present invention, and is not a limitation to the technical solution of the present invention, and it should be noted that, further improvements and changes can be made by those skilled in the art on the premise of the technical solution of the present invention, and all such improvements and changes should be covered in the protection scope of the present invention.
Claims (10)
1. A rail mounted deloading unit, characterized in that: the plunger pump comprises a pump cylinder assembly, a plunger assembly and a plunger assembly joint butted with the plunger assembly, wherein the pump cylinder assembly is sleeved outside the plunger assembly, and when the plunger pump is used, the plunger assembly joint is connected with the plunger assembly; the plunger assembly comprises a plunger butt joint cylinder (1) and a lower spiral joint (2), wherein the lower spiral joint (2) is sleeved on the plunger butt joint cylinder (1); the plunger assembly joint comprises a sucker rod joint (17), a middle spiral joint (18) and an upper spiral joint (19) which are sequentially connected from top to bottom; wherein, the middle screw joint (18), the upper screw joint (19), the plunger butting column body (1) and the lower screw joint (2) form a track butting structure.
2. The track-mounted load reliever of claim 1, wherein: the plunger assembly further comprises a connector (6), an upper oil outlet connector (7), a small plunger (8) and a large plunger (9), and the plunger is connected with the cylinder (1), the connector (6), the upper oil outlet connector (7), the small plunger (8) and the large plunger (9) in sequence from top to bottom.
3. A track-type load reliever as claimed in claim 2, wherein: the lower part of the lower spiral connector (2) is provided with a spring (3), the lower end of the spring (3) is provided with a baffle ring (5), the spring (3) and the baffle ring (5) are sleeved on the plunger butting cylinder body (1), and the lower end of the baffle ring (5) is tightly abutted to the upper end of the connector (6).
4. A track-type load reliever as claimed in claim 2, wherein: the pump cylinder assembly comprises a release joint (10), an oil pipe (11), a connecting coupling (13), a ventilation joint (14), a large pump cylinder (15) and a lower joint (16) which are sequentially connected from top to bottom, and the ventilation joint (14) is also connected with a small pump cylinder (12); when the pump cylinder assembly is sleeved on the outer side of the plunger assembly, the outer side of the small plunger (8) is tightly abutted with the inner side of the small pump cylinder (12), and the outer side of the large plunger (9) is tightly abutted with the inner side of the large pump cylinder (15).
5. The track-mounted load reliever of claim 4, wherein: through holes are formed in the circumferential direction of the air exchange joint (14).
6. The track-mounted load reliever of claim 4, wherein: the inner side of the release joint (10) is provided with a step, and the inner dimension of the step is smaller than the maximum outer diameter of the lower spiral joint (2).
7. The track-mounted load reliever of claim 1, wherein: be provided with flat key (4) on plunger butt joint cylinder (1), the inboard of lower screwed joint (2) is provided with the keyway, and lower screwed joint (2) can not take place relative rotation with plunger butt joint cylinder (1) through the joint effect of keyway and flat key (4).
8. The track-mounted load reliever of claim 1, wherein: the top of the plunger butting cylinder (1) is provided with a conical head.
9. The track-mounted load reliever of claim 8, wherein: the top conical head tip of the plunger butting cylinder body (1) is in cross connection with the flat inner hole of the middle spiral joint (18).
10. The track-mounted load reliever of claim 1, wherein: and the upper spiral joint (19) and the lower spiral joint (2) are provided with mutually matched spiral track surfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920594442.1U CN209976754U (en) | 2019-04-28 | 2019-04-28 | Rail type load shedding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920594442.1U CN209976754U (en) | 2019-04-28 | 2019-04-28 | Rail type load shedding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209976754U true CN209976754U (en) | 2020-01-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920594442.1U Active CN209976754U (en) | 2019-04-28 | 2019-04-28 | Rail type load shedding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209976754U (en) |
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2019
- 2019-04-28 CN CN201920594442.1U patent/CN209976754U/en active Active
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