CN210598927U - Special downhole hydraulic motor for oil production - Google Patents
Special downhole hydraulic motor for oil production Download PDFInfo
- Publication number
- CN210598927U CN210598927U CN201921295849.0U CN201921295849U CN210598927U CN 210598927 U CN210598927 U CN 210598927U CN 201921295849 U CN201921295849 U CN 201921295849U CN 210598927 U CN210598927 U CN 210598927U
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- piston rod
- hollow piston
- cylinder
- joint
- seal cover
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Abstract
The utility model relates to a arrange and adopt equipment, specifically be a special hydraulic motor in pit of producing oil suitable for highly deviated well, horizontal well. The utility model provides a special downhole hydraulic motor recovers oil, including the hydraulic cylinder, open hydraulic cylinder upper end has the liquid of production to go up the passageway, both ends set up seal cover and lower seal cover respectively about the hydraulic cylinder, set up the double-flow plunger in the cylinder, the double-flow plunger includes the plunger main part, go up hollow piston rod and lower hollow piston rod, the plunger main part is opened has high-pressure power liquid passageway and low pressure to produce the liquid runner, high-pressure power liquid passageway upper end communicates hollow piston rod, go up hollow piston rod upper portion and be located the seal cover, low pressure is produced liquid runner lower extreme and is communicated hollow piston rod down, lower seal cover is passed to lower hollow piston rod lower part. The utility model discloses simple structure, energy consumption are low, arrange and adopt efficiently, are applicable to the rodless oil recovery operation of highly deviated well, horizontal well.
Description
Technical Field
The utility model relates to a arrange and adopt equipment, specifically be a special hydraulic motor in pit of producing oil suitable for highly deviated well, horizontal well.
Background
In the process of oil field production and coal bed gas development, along with the development of well drilling and drainage technologies, highly deviated wells and horizontal wells are increased. The traditional rod production equipment has many new problems in the production process, such as breakage and falling of the sucker rod due to eccentric wear, scrapping of an oil pipe due to eccentric wear and shortened pump inspection period; although various rodless drainage and mining equipment such as an electric submersible screw pump, an electric submersible pump, a hydraulic piston pump and an injection pump are vigorously researched and developed at home and abroad, the existing drainage and mining equipment is unsatisfactory, is difficult to break through technically, has the defect that the existing drainage and mining equipment is difficult to overcome, and does not have practicability.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a simple structure, energy consumption are low, arrange to adopt efficiently, realize the rodless hydraulic motor in pit that arranges to adopt of oil recovery special use.
The technical scheme of the utility model is that:
the utility model provides a special downhole hydraulic motor recovers oil, including the hydraulic cylinder, open hydraulic cylinder upper end has the liquid of production to go up the passageway, both ends set up seal cover and lower seal cover respectively about the hydraulic cylinder, set up the double-flow plunger in the cylinder, the double-flow plunger includes the plunger main part, go up hollow piston rod and lower hollow piston rod, the plunger main part is opened has high-pressure power liquid passageway and low pressure to produce the liquid runner, high-pressure power liquid passageway upper end intercommunication goes up hollow piston rod, go up hollow piston rod upper portion and be located the seal cover, low pressure is produced liquid runner lower extreme and is led to lower hollow piston rod, lower seal cover is passed to lower hollow piston rod lower part, the diameter of going up hollow piston rod is less than the diameter of lower hollow piston.
Specifically, the upper end of the hydraulic cylinder barrel is connected with an upper oil pipe nipple through a cylinder barrel upper joint, an upper sealing sleeve is arranged at the center of the cylinder barrel upper joint, a produced liquid ascending channel is formed in the cylinder barrel upper joint to enable the hydraulic cylinder barrel to be communicated with an upper oil pipe short joint, the lower end of the hydraulic cylinder barrel is connected with a lower oil pipe nipple through a cylinder barrel lower joint, and a lower sealing sleeve is arranged at the center of the cylinder barrel lower joint.
Specifically, the lower end of the lower hollow piston rod is connected with a hollow pull rod joint, the side edge of the hollow pull rod joint is provided with a hole, and the hole is communicated with the interior of the lower hollow piston rod and the interior of the lower oil pipe short circuit.
Specifically, the longitudinal axes of the upper hollow piston rod, the piston body and the lower hollow piston rod are on the same straight line.
The lower end of the double-channel plunger of the utility model is connected with the plunger of the oil pump, and the double-channel plunger is driven to move upwards by the power fluid; the double-channel plunger is driven to descend by hydraulic feedback force, rodless discharge and mining are realized, and the eccentric wear problem of the oil rod lifting process is thoroughly solved; the utility model discloses simple structure, energy consumption are low, arrange and adopt efficiently, are applicable to the rodless oil recovery operation of highly deviated well, horizontal well.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
1 go up oil pipe short circuit 2 go up 3 cylinder top connection 4 of seal cover 3 go up hollow piston rod 5 hydraulic cylinder 6 plunger main part 7 high pressure power fluid passageway 8 low pressure production fluid runner 9 down hollow piston rod 10 down seal cover 11 cylinder bottom connection 12 down oil pipe short circuit 13 hollow pull rod connects 14 cylinder lower annulus 15 cylinder top annulus.
Detailed Description
A special underground hydraulic motor for oil extraction comprises a hydraulic cylinder barrel 5, wherein the upper end of the hydraulic cylinder barrel 5 is connected with an upper oil pipe short joint through a cylinder barrel upper joint 3, the upper oil pipe short joint 1 is used for being connected with an oil pipe of an oil well, an upper sealing sleeve 2 is arranged at the center of the cylinder barrel upper joint 3, the upper end of the upper sealing sleeve 2 is connected with the lower end of a concentric small oil pipe of the oil well, and the upper end of the concentric small oil pipe of the oil well is connected with ground; the upper joint 3 of the cylinder barrel is provided with a produced liquid ascending channel to communicate the hydraulic cylinder barrel 5 with the upper oil pipe short joint 1, the lower end of the hydraulic cylinder barrel 5 is connected with a lower oil pipe short joint through a lower joint 11 of the cylinder barrel, a lower oil pipe short joint 12 is connected with a pump barrel of an oil well pump, and the center of the lower joint 11 of the cylinder barrel is provided with a lower sealing sleeve 10.
A double-channel plunger is arranged in the cylinder barrel and comprises a plunger main body 6, an upper hollow piston rod 4 and a lower hollow piston rod 9, an upper cylinder annulus 15 is formed above a plunger main body 6, a lower cylinder annulus 14 is formed below the plunger main body 6, the diameter of the upper hollow piston rod 4 is smaller than that of the lower hollow piston rod 9, the plunger main body 6 is provided with a high-pressure power liquid channel 7 and a low-pressure liquid production channel 8, the upper end of the high-pressure power liquid channel 7 is communicated with the upper hollow piston rod 4, the upper part of the upper hollow piston rod 4 is positioned in an upper sealing sleeve 2, the lower end of the low-pressure liquid production channel 8 is communicated with the lower hollow piston rod 9, the lower part of the lower hollow piston rod 9 penetrates through a lower sealing sleeve 10, the lower end of the lower hollow piston rod 9 is connected with a hollow pull rod connector 13, the side of the hollow pull rod connector 13 is provided with a hole which is communicated with the interior of the lower hollow.
The utility model discloses a working process is: during the upper stroke, power fluid sequentially passes through the upper sealing sleeve 2, the upper hollow piston rod 4 and the high-pressure power fluid channel 7 of the plunger main body 6, enters the lower annulus 14 of the cylinder barrel, pushes the plunger main body 6 to move upwards, and drives the hollow pull rod joint 13 and the plunger of the oil well pump to move upwards; during the lower stroke, ground power hydraulic pressure reduces, annular space production liquid and concentric little oil pipe power hydraulic pressure force are balanced basically, because annular space 14 annular space area is greater than annular space area of annular space 15 on the cylinder under the cylinder, plunger main part 6 moves down under the effect of hydraulic feedback force, drag plunger main part 6 down, connect 13 through hollow pull rod, it is down to drive the oil-well pump plunger, the production liquid passes through hollow pull rod and connects 13, lower hollow piston rod 9, the low pressure of plunger main part 6 produces the liquid runner 8, get into plunger main part 6 upper portion, through oil pipe and concentric little oil pipe annular space, lift ground.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the same; although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that: the invention can be modified or equivalent substituted for some technical features; without departing from the spirit of the present invention, it should be understood that the scope of the claims is intended to cover all such modifications and variations.
Claims (4)
1. The utility model provides a special downhole hydraulic motor recovers oil, a serial communication port, including the hydraulic cylinder, open hydraulic cylinder upper end has the liquid of production to go up the passageway, both ends set up seal cover and lower seal cover respectively about the hydraulic cylinder, set up the double-flow plunger in the cylinder, the double-flow plunger includes the plunger main part, go up hollow piston rod and lower hollow piston rod, the plunger main part is opened has high-pressure power liquid passageway and low pressure to produce the liquid runner, high-pressure power liquid passageway upper end intercommunication goes up hollow piston rod, go up hollow piston rod upper portion and be located the seal cover, low pressure is produced liquid runner lower extreme and is linked to lower hollow piston rod, lower hollow piston rod lower part passes the seal cover, the diameter of going up hollow piston rod is less than the diameter of lower hollow piston rod.
2. The downhole hydraulic motor special for oil production as claimed in claim 1, wherein the upper end of the hydraulic cylinder is connected with the upper oil pipe nipple through an upper joint of the cylinder, an upper sealing sleeve is arranged at the center of the upper joint of the cylinder, an upward passage for a produced liquid is formed in the upper joint of the cylinder to communicate the hydraulic cylinder with the upper oil pipe nipple, the lower end of the hydraulic cylinder is connected with the lower oil pipe nipple through a lower joint of the cylinder, and a lower sealing sleeve is arranged at the center of the lower joint of the cylinder.
3. The downhole hydraulic motor special for oil production as recited in claim 1, wherein the lower end of the lower hollow piston rod is connected to a hollow tie-rod joint, and a hole is formed in a side edge of the hollow tie-rod joint and communicates the interior of the lower hollow piston rod and the interior of the lower tubing pup joint.
4. The downhole hydraulic motor for oil recovery of claim 1, wherein the longitudinal axes of the upper hollow piston rod, the piston body and the lower hollow piston rod are collinear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921295849.0U CN210598927U (en) | 2019-08-08 | 2019-08-08 | Special downhole hydraulic motor for oil production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921295849.0U CN210598927U (en) | 2019-08-08 | 2019-08-08 | Special downhole hydraulic motor for oil production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210598927U true CN210598927U (en) | 2020-05-22 |
Family
ID=70698280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921295849.0U Expired - Fee Related CN210598927U (en) | 2019-08-08 | 2019-08-08 | Special downhole hydraulic motor for oil production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210598927U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110318712A (en) * | 2019-08-08 | 2019-10-11 | 淄博东华石油技术有限公司 | A kind of dedicated underground hydraulic motor that recovers the oil |
-
2019
- 2019-08-08 CN CN201921295849.0U patent/CN210598927U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110318712A (en) * | 2019-08-08 | 2019-10-11 | 淄博东华石油技术有限公司 | A kind of dedicated underground hydraulic motor that recovers the oil |
| CN110318712B (en) * | 2019-08-08 | 2024-03-15 | 淄博东华石油技术有限公司 | Underground hydraulic motor special for oil extraction |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200522 Termination date: 20210808 |
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| CF01 | Termination of patent right due to non-payment of annual fee |