CN210530808U - Underground driven ball screw oil pumping machine - Google Patents
Underground driven ball screw oil pumping machine Download PDFInfo
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- CN210530808U CN210530808U CN201921643036.6U CN201921643036U CN210530808U CN 210530808 U CN210530808 U CN 210530808U CN 201921643036 U CN201921643036 U CN 201921643036U CN 210530808 U CN210530808 U CN 210530808U
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- ball screw
- sealing sleeve
- nut
- fixedly connected
- sleeve
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- 238000005086 pumping Methods 0.000 title claims abstract description 28
- 238000007789 sealing Methods 0.000 claims abstract description 52
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 239000003921 oil Substances 0.000 abstract description 29
- 230000005540 biological transmission Effects 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 239000012535 impurity Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The underground driven ball screw pumping unit belongs to the technical field of non-beam pumping units, and comprises a motor, a large four-way joint at a well mouth, a ball screw driving assembly and a pumping rod, wherein the ball screw driving assembly comprises a ball screw, a bearing, a nut, an oil pipe, a sleeve, an upper sealing sleeve, a lower sealing sleeve, a rotation stopping guide key and a pipe column anchor. The utility model discloses in except that electrical equipment settings such as motor have no other parts again subaerial, reached safety ring protects's purpose. The motor directly drives the ball screw, and the transmission efficiency is over 95 percent. Because the ball screw drive assembly is arranged underground, the length of the underground shaft is large, the stroke of the pumping unit can be increased, and the purpose of long stroke is realized. The ball screw is integrally protected by the sealing sleeve, so that oil, water, impurities and the like cannot enter the ball screw, and the service life of the ball screw is prolonged. Because of using the pipe column anchor, the pipe column does not rotate and the vibration is smaller in the running process of the whole machine, thereby ensuring the safe and stable running of the equipment.
Description
Technical Field
The utility model belongs to the technical field of no beam-pumping unit, especially relate to a driven ball pumping unit in pit.
Background
Pumping units used for oil extraction in oil fields are mainly classified into two types, namely beam pumping units and non-beam pumping units. The walking beam-free oil pumping unit has the advantages of simple structure, convenient installation, high transmission efficiency, safety, environmental protection and the like, thereby being popular in the field. The ball screw oil pumping unit in the prior art has the following defects:
1. because the device is arranged on a large four-way of an overground wellhead and is limited by height, the stroke of the oil pumping unit is correspondingly limited, and the stroke can not be too long, the working efficiency is low.
2. Because the equipment is provided with the balance weight, the balance weight can be suddenly broken or hurt people by the balance weight when moving up and down under the drive of the steel wire rope, and potential safety hazards exist to the surrounding environment.
3. The vertical pipe has crude oil, gas and water during normal production, and if the vertical pipe is suddenly stopped in case of power failure, the vertical pipe is a pressure container, so that high pressure is easily generated, and potential safety hazards of explosion exist. Meanwhile, the problem of frost cracking of the stand pipe also exists in winter.
4. The whole machine equipment has high operation and maintenance risks.
5. The whole machine has complex structure, high failure rate and high manufacturing cost, so the field application is less.
Therefore, there is a need in the art for a new solution to solve this problem.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: the utility model provides a ball pumping unit of underground drive, simplifies no beam-pumping unit structure, installs driven main mechanism ball in the pit for solve ball pumping unit among the prior art stroke short, work efficiency low, fault rate high, manufacturing cost high, have technical problem such as potential safety hazard.
The underground driven ball screw pumping unit comprises a motor, a large wellhead four-way, a ball screw driving assembly and a pumping rod, wherein the large wellhead four-way is fixedly arranged on a wellhead, the upper part of the large wellhead four-way is fixedly connected with an upper flange through a bolt, and the lower part of the large wellhead four-way is fixedly connected with a lower flange through a bolt; the ball screw driving assembly is installed underground, a sealing sleeve is arranged outside a ball screw in the ball screw driving, the ball screw driving assembly is fixedly connected with a large four-way joint of a well head through an upper flange and a lower flange respectively, the upper portion of the ball screw driving assembly is connected with a motor through the upper flange and is sealed, and the lower portion of the ball screw driving assembly is connected with a sucker rod.
The ball screw driving assembly comprises a ball screw, a bearing, a nut, an oil pipe, a sleeve, an upper sealing sleeve, a lower sealing sleeve, a rotation stopping guide key and a pipe column anchor; the upper end of the ball screw is coaxially connected with a rotor output shaft of the motor, the ball screw penetrates through the large four-way of the wellhead and extends to the underground, and the side wall of the ball screw is meshed with the nut; the nut is fixedly connected with the inner wall of the lower sealing sleeve, and the lower part of the nut is fixedly connected with the sucker rod; the upper sealing sleeve and the lower sealing sleeve are connected in a sliding and sealing mode to form a sealing sleeve and are sleeved outside the ball screw and the nut; the lower part of the lower sealing sleeve is arranged at the joint of the nut and the sucker rod; the oil pipe is sleeved outside the sealing sleeve and the sucker rod, and is fixedly connected with the inner wall of the upper flange through an oil pipe hanger; the sleeve is sleeved outside the oil pipe and fixedly connected with the inner wall of the lower flange; the rotation stopping guide key is arranged on the inner side wall of the oil pipe; the outer side wall of the sucker rod is provided with a guide rail, and the guide rail is meshed with the rotation stopping guide key; and the pipe column anchor is fixedly connected with the outer part of the pipe column at the lower part of the oil pipe.
The upper sealing sleeve is sleeved outside the ball screw and the nut, the upper end of the upper sealing sleeve is connected with the bearing in a sealing mode, and the lower end of the upper sealing sleeve is connected with the outer side wall of the lower sealing sleeve in a sliding and sealing mode.
The casing is sleeved outside the oil pipe and the pipe string anchor.
The motor is a permanent magnet synchronous motor.
Through the above design scheme, the utility model discloses following beneficial effect can be brought:
the utility model discloses well motor direct mount is on the big cross of well head, and no other parts have again in subaerial in the setting of electrical equipment such as except motor, have reached safety ring protects's purpose. The motor directly drives the ball screw, and the transmission efficiency is over 95 percent. Because the ball screw drive assembly is arranged underground, the length of the underground shaft is large, the stroke of the pumping unit can be increased, and the purpose of long stroke is realized. The ball screw is integrally protected by the sealing sleeve, so that oil, water, impurities and the like cannot enter the ball screw, and the service life of the ball screw is prolonged. Because of using the pipe column anchor, the pipe column does not rotate and the vibration is smaller in the running process of the whole machine, thereby ensuring the safe and stable running of the equipment. The utility model discloses simple structure, simple to operate, safety ring protects. The motor directly drives the ball screw, so that the transmission efficiency is high, the daily maintenance is simple, the risk of workover operation is low, and the motor is suitable for popularization and application in oil field production.
Drawings
The invention is further described with reference to the following drawings and detailed description:
fig. 1 is the structure schematic diagram of the underground driving ball screw oil pumping unit of the utility model.
Fig. 2 is the connection relationship schematic diagram of the upper and lower sealing sleeves of the downhole driven ball screw pumping unit.
In the figure, 1-motor, 2-big four-way of well mouth, 3-ball screw, 4-upper flange, 5-lower flange, 6-bearing, 7-nut, 8-oil pipe, 9-sleeve, 10-upper sealing sleeve, 11-lower sealing sleeve, 12-rotation stop guide key, 13-pipe column anchor and 14-oil pipe hanger.
Detailed Description
As shown in the figure, the underground driven ball screw pumping unit comprises an underground driven ball screw pumping unit which comprises a motor 1, a wellhead big four-way joint 2, a ball screw driving assembly and a pumping rod,
the wellhead large four-way 2 is fixedly arranged on a wellhead, the upper part of the wellhead large four-way 2 is fixedly connected with an upper flange 4 through a bolt, and the lower part of the wellhead large four-way 2 is fixedly connected with a lower flange 5 through a bolt; the ball screw driving assembly comprises a ball screw 3, a bearing 6, a nut 7, an oil pipe 8, a sleeve 9, an upper sealing sleeve 10, a lower sealing sleeve 11, a rotation stopping guide key 12 and a pipe column anchor 13, and is arranged underground and fixedly connected with the large four-way joint 2 of the wellhead through an upper flange 4 and a lower flange 5 respectively.
The wellhead large four-way 2 is fixedly arranged on a wellhead, the upper part of the wellhead large four-way 2 is fixedly connected with an upper flange 4 through a bolt, and the lower part of the wellhead large four-way 2 is fixedly connected with a lower flange 5 through a bolt; the motor 1 is a permanent magnet synchronous motor, a rotor output shaft of the motor 1 is coaxially connected with the upper end of a ball screw 3 through a bearing 6, and the motor 1 is connected and sealed with a large four-way valve 2 of a well mouth through an upper flange 4; the side wall of the ball screw 3 is meshed with the nut 7, and the lower end of the ball screw 3 is sleeved with a lower sealing sleeve 11; the nut 7 is fixedly arranged on the inner side wall of the lower seal sleeve 11, and the nut 7 is fixedly connected with the sucker rod;
the upper part of the lower sealing sleeve 11 is fixedly connected with the nut 7, and the lower part of the lower sealing sleeve 11 is arranged at the joint of the nut 7 and the sucker rod;
the upper sealing sleeve 10 is sleeved outside the ball screw 3 and the nut 7, the upper end of the upper sealing sleeve 10 is connected with the bearing 6 in a sealing manner, and the lower end of the upper sealing sleeve 10 is connected with the outer side wall of the lower sealing sleeve 11 in a sealing manner and can slide relatively;
the oil pipe 8 is sleeved outside the upper sealing sleeve 10 and the lower sealing sleeve 11, the upper part of the oil pipe 8 is fixedly connected with the inner side wall of the upper end of the large four-way 2 of the well mouth through an oil pipe hanger 14, the middle part of the oil pipe 8 is fixedly connected with the inner side wall of the lower end of the large four-way 2 of the well mouth through the oil pipe hanger 14, the outer part of the lower part of the oil pipe 8 is fixedly connected with a pipe column anchor 13 to prevent the pipe column from rotating and vibrating, and the inner side wall of the lower part; the lateral wall of sucker rod is provided with the guide rail to the guide rail is connected with the meshing of splining key 12, guarantees that the sucker rod carries out up-and-down reciprocating motion and does not take place to rotate.
The sleeve 9 is sleeved outside the oil pipe 8 and the pipe column anchor 13, and the upper part of the sleeve 9 is fixedly connected with the inner wall of the lower flange 5.
The utility model discloses a during operation of driven ball screw beam-pumping unit in pit, motor 1 is positive and negative direction rotation under control system's control, and 2 positive and negative rotation of power drive ball screw of output drive nut 7 and then drive sucker rod up-and-down motion, and the sucker rod links to each other with the reciprocating oil-well pump in pit, so just also drive the reciprocating oil-well pump reciprocating motion in pit and pump oil. The stroke and the stroke frequency of the oil pumping unit can be controlled by controlling the time of the forward and reverse rotation of the motor 1.
Claims (5)
1. The underground driven ball screw oil pumping machine is characterized in that: the large four-way well head comprises a motor (1), a large four-way well head (2), a ball screw drive assembly and a sucker rod, wherein the large four-way well head (2) is fixedly arranged at a well head, the upper part of the large four-way well head (2) is fixedly connected with an upper flange (4) through a bolt, and the lower part of the large four-way well head (2) is fixedly connected with a lower flange (5) through a bolt; the ball screw driving assembly is installed underground, a sealing sleeve is arranged outside a ball screw (3) in the ball screw driving, the ball screw driving assembly is fixedly connected with a large four-way joint (2) of a well head through an upper flange (4) and a lower flange (5) respectively, the upper portion of the ball screw driving assembly is connected and sealed with a motor (1) through the upper flange (4), and the lower portion of the ball screw driving assembly is connected with a sucker rod.
2. The downhole powered ball screw pump of claim 1, wherein: the ball screw driving assembly comprises a ball screw (3), a bearing (6), a nut (7), an oil pipe (8), a sleeve (9), an upper sealing sleeve (10), a lower sealing sleeve (11), a rotation stop guide key (12) and a pipe column anchor (13); the upper end of the ball screw (3) is coaxially connected with a rotor output shaft of the motor (1), the ball screw (3) penetrates through the large wellhead four-way (2) and extends to the underground, and the side wall of the ball screw (3) is meshed with the nut (7); the nut (7) is fixedly connected with the inner wall of the lower sealing sleeve (11), and the lower part of the nut (7) is fixedly connected with the sucker rod; the upper sealing sleeve (10) and the lower sealing sleeve (11) are connected in a sliding sealing mode to form a sealing sleeve and are sleeved outside the ball screw (3) and the nut (7); the lower part of the lower sealing sleeve (11) is arranged at the joint of the nut (7) and the sucker rod; the oil pipe (8) is sleeved outside the sealing sleeve and the sucker rod, and the oil pipe (8) is fixedly connected with the inner wall of the upper flange (4) through an oil pipe hanger; the sleeve (9) is sleeved outside the oil pipe (8), and the sleeve (9) is fixedly connected with the inner wall of the lower flange (5); the rotation stopping guide key (12) is arranged on the inner side wall of the oil pipe (8); the outer side wall of the sucker rod is provided with a guide rail, and the guide rail is meshed and connected with a rotation stopping guide key (12); and the pipe string anchor (13) is fixedly connected with the outer part of the lower pipe string of the oil pipe (8).
3. The downhole powered ball screw pump of claim 2, wherein: the upper sealing sleeve (10) is sleeved outside the ball screw (3) and the nut (7), the upper end of the upper sealing sleeve (10) is in sealing connection with the bearing (6), and the lower end of the upper sealing sleeve (10) is in sliding sealing connection with the outer side wall of the lower sealing sleeve (11).
4. The downhole powered ball screw pump of claim 2, wherein: the casing (9) is sleeved outside the oil pipe (8) and the pipe string anchor (13).
5. The downhole powered ball screw pump of claim 1, wherein: the motor (1) is a permanent magnet synchronous motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921643036.6U CN210530808U (en) | 2019-09-29 | 2019-09-29 | Underground driven ball screw oil pumping machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921643036.6U CN210530808U (en) | 2019-09-29 | 2019-09-29 | Underground driven ball screw oil pumping machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210530808U true CN210530808U (en) | 2020-05-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921643036.6U Active CN210530808U (en) | 2019-09-29 | 2019-09-29 | Underground driven ball screw oil pumping machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210530808U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110485971A (en) * | 2019-09-29 | 2019-11-22 | 大庆拓维石油科技开发有限公司 | The ball-screw pumping unit of down-hole drive |
| CN113266313A (en) * | 2021-02-25 | 2021-08-17 | 大庆虹铭科技有限公司 | Direct-drive roller screw oil production device |
-
2019
- 2019-09-29 CN CN201921643036.6U patent/CN210530808U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110485971A (en) * | 2019-09-29 | 2019-11-22 | 大庆拓维石油科技开发有限公司 | The ball-screw pumping unit of down-hole drive |
| CN113266313A (en) * | 2021-02-25 | 2021-08-17 | 大庆虹铭科技有限公司 | Direct-drive roller screw oil production device |
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