Power assisting device for adjusting and driving eccentric wellhead of rod-pumped well

Abstract

The invention discloses a rod pumped well eccentric wellhead adjustment driving power assisting device which comprises a driving chuck and a semicircular driver which are in meshing transmission through a gear, the whole driving chuck is of a U-shaped structure, a round clamp used for clamping a sucker rod is arranged in a U-shaped inner cavity in a sleeved mode, a thrust bearing is fixedly connected to the center of the bottom of the semicircular driver, and a driving shaft is connected into the thrust bearing in a sleeved mode. The power assisting device for adjusting and driving the eccentric wellhead of the rod-pumped well is simple in structure, the driving chuck is matched with the semicircle in a driving mode, the rotating angle can be accurately controlled and adjusted through gear meshing, the lengthened handle uses the sleeve head as a fulcrum, large torque is provided, operation is convenient, meanwhile, multiple times of continuous rotation can be achieved in a narrow space, and the working efficiency is improved. The tool cannot slip or fly off, the working position of the eccentric wellhead can be rapidly, efficiently and safely rotated and adjusted, and it is guaranteed that the testing work of a rod-pumped well is normally carried out.

Description

Technical Field

[0001] The invention belongs to the technical field of oil production engineering, and in particular relates to an eccentric wellhead adjustment driving booster device for an oil pumping well. Background Art

[0002] Pumping well test data is an indispensable data in the process of oilfield development and production. It is an important basis for studying the laws of oilfield development and mastering the dynamics of oil reservoirs. It is of great significance to the normal production management of oil wells and guiding the rational exploitation of oil wells. Pumping well testing technology is an important means to understand the oil and gas environment. Through research and analysis of various aspects, correct conclusions can be drawn, and then the type, distribution area and surrounding environment of oil and gas resources can be judged, so as to provide safety guarantees for the smooth implementation of oil production projects. Oil production projects are activities based on testing technology. Pumping well testing work is to test pumping wells at the oilfield production site through various instruments and record test data, analyze and study various physical parameters of the oil layer and the production capacity of the well, thereby improving the understanding of the oil reservoir and oil layer, and providing a detailed and reliable basis for the rational development of oil fields, the formulation of oil field development plans, and the adoption of production increase measures.

[0003] Before testing a pumping well, it is necessary to first check the current production status of the test well, confirm whether the measured liquid level is a dynamic liquid level or a static liquid level, record the current operating status of the pumping well, including oil pressure, casing pressure, production, gas-oil ratio, water content, etc., and lower the test instrument from the test port of the eccentric wellhead. At present, oil production workers often verify whether the eccentric wellhead position adjustment of the pumping well meets the dynamic monitoring conditions at the production site. There are no suitable tools on site for adjustment and verification, and multiple oil production workers are required to use tools such as pipe clamps and force levers to rotate and adjust the eccentric wellhead working position of the pumping well to achieve the purpose of normal downhole testing of the test instrument. In the process of rotating and adjusting the eccentric wellhead of the pumping well, there are small space, difficult operation, eccentric wellhead stuck or rusted failures, low work efficiency and major safety hazards. Summary of the invention

[0004] The purpose of the present invention is to provide an eccentric wellhead adjustment driving assisting device for a pumping well, which solves the problems of low working efficiency and great potential safety hazards in the prior art.

[0005] The technical solution adopted by the present invention is an eccentric wellhead adjustment drive assist device for a pumping well, comprising a drive chuck and a semicircular drive driven by gear meshing. The drive chuck is an overall U-shaped structure, and the U-shaped inner cavity is sleeved with a round card for clamping a sucker rod. A thrust bearing is fixedly connected to the center of the bottom of the semicircular drive, and a drive shaft is sleeved inside the thrust bearing.

[0006] The present invention is also characterized in that:

[0007] The semicircular drive is a semi-cylindrical structure. The arc surface of the semi-cylinder is provided with gears. The U-shaped outer arc surface of the driving chuck is provided with tooth grooves. The gears match the tooth grooves. A sleeve head is fixedly connected to the center of the top of the semi-cylinder, and a handle is passed through the sleeve head.

[0008] The sleeve head is a cylindrical structure, a through hole is penetrated through the side wall of the cylinder, a boss is arranged at one end of the handle, and the other end passes through the through hole in sequence, and the size of the boss is not less than the size of the through hole.

[0009] The round clamp is a cylindrical structure, the side of the cylinder matches the U-shaped inner wall of the driving chuck, and a mounting groove for clamping the sucker rod during assembly is opened on the cylinder, and the mounting groove extends radially from the axis.

[0010] The height of the round card shall not be lower than the height of the driving chuck.

[0011] A handle is fixedly connected to the upper end surface of the driving chuck near both ends.

[0012] The handle is a U-shaped handle, and both ends are fixedly connected to the upper end surface of the driving chuck.

[0013] The beneficial effects of the present invention are:

[0014] The eccentric wellhead adjustment driving assist device of the oil pumping well of the present invention has a simple structure, and is mainly composed of a round clamp, a handle, a semicircular drive, a sleeve head, a thrust bearing, a driving shaft, and a driving chuck for use in combination. The semicircular drive, the thrust bearing and the driving shaft are installed below the special drive sleeve head. The driving chuck cooperates with the semicircular drive, and the rotation angle can be accurately controlled and adjusted through gear meshing. The extended handle uses the sleeve head as a fulcrum to provide a large torque, and the operation is convenient. At the same time, multiple continuous rotations can be achieved in a small space without causing the tool to slip or fly off. The eccentric wellhead working position can be quickly, efficiently and safely rotated to adjust, thereby ensuring the normal testing of the oil pumping well. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the eccentric wellhead adjustment driving assisting device of the oil pumping well of the present invention;

[0016] Figure 2 It is a side view of the eccentric wellhead adjustment driving assisting device of the oil pumping well of the present invention;

[0017] Figure 3 It is a top view of the eccentric wellhead adjustment driving assisting device of the oil pumping well of the present invention.

[0018] In the figure, 1. eccentric wellhead, 2. drive chuck, 3. semicircular drive, 4. thrust bearing, 5. drive shaft, 6. sleeve head, 7. handle, 8. nut, 9. wellhead bolt, 10. lifting handle, 11. round clamp, 12. sucker rod. DETAILED DESCRIPTION

[0019] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] The eccentric wellhead adjustment driving assist device of the oil pumping well of the present invention has a structure as follows Figure 1 and Figure 3 As shown, it includes a driving chuck 2 and a semicircular drive 3 driven by gear meshing. The driving chuck 2 is a U-shaped structure as a whole, and a handle 10 is fixedly connected to the upper end surface of the driving chuck 2 near both ends. The handle 10 is a U-shaped handle, and both ends are fixedly connected to the upper end surface of the driving chuck 2.

[0021] The U-shaped inner cavity of the driving chuck 2 is provided with a round card 11, and the height of the round card 11 is not less than the height of the driving chuck 2. The round card 11 is a cylindrical structure, and the cylindrical side of the round card 11 matches the U-shaped inner wall of the driving chuck 2. The cylindrical body is provided with a mounting groove for clamping the sucker rod 12 during assembly, and the mounting groove is a through groove extending radially from the axis.

[0022] like Figure 2 As shown, the semicircular drive 3 is a semi-cylindrical structure, the arc surface of the semi-cylindrical structure is provided with a gear, the U-shaped outer arc surface of the driving chuck 2 is provided with a tooth groove, the gear matches the tooth groove, the bottom of the semicircular drive 3 is fixed with a thrust bearing 4, the bottom of the thrust bearing 4 is sleeved with a driving shaft 5, the thrust bearing 4 is used in conjunction with the semicircular drive 3, and the semicircular drive 3 is convenient for flexible rotation operation, and the end of the driving shaft 5 away from the thrust bearing 4 passes through the wellhead bolt 9 of the eccentric wellhead 1 and is threadedly connected with a nut 8. The axial rotation of the semicircular drive 3 drives the driving chuck 2 to rotate in the opposite direction through the gear, thereby realizing the transmission of torque, and the rotation angle can be accurately controlled and adjusted through the meshing of the gears. A sleeve head 6 is fixedly connected at the center of the top of the semi-cylinder. The sleeve head 6 is a cylindrical structure. A through hole is penetrated through the side wall of the cylinder. A boss is arranged at one end of the handle 7, and the other end passes through the through holes in sequence. The size of the boss is not less than the size of the through hole. The handle 7 is inserted into the through hole of the special sleeve head 6. The extended handle 7 takes the sleeve head 6 as a fulcrum to provide a large torque. The special sleeve head 6 and the semicircular drive 3 are driven by external force to rotate along the central axis of the thrust bearing 4. The semicircular drive 3 and the drive chuck 2 are controlled to rotate by driving the special sleeve head 6. The operation is convenient, and multiple continuous rotations can be realized in a small space. At the same time, the tool will not slip or fly off. The working position of the eccentric wellhead 1 can be adjusted quickly, efficiently and safely to ensure the normal testing of the pumping well.

[0023] The eccentric wellhead adjustment driving assist device of the oil pumping well of the present invention has the following working principle: the U-shaped clamp of the driving chuck 2 is fixed on the wellhead boss of the eccentric wellhead 1, the round clamp 11 is clamped with the sucker rod 12, the end of the driving shaft 5 away from the thrust bearing 4 passes through the wellhead bolt 9 of the eccentric wellhead 1 and is tightened and fixed with the nut 8, the handle 7 passes through the through hole of the sleeve head 6, the handle 7 drives the sleeve head 6 and the semicircular drive 3 to rotate around the center axis of the thrust bearing 4 through external force, and drives the driving chuck 2 to rotate axially in the opposite direction through the gear, thereby driving the eccentric wellhead 1 to rotate axially around the U-shaped arc center line of the driving chuck 2 with the driving chuck 2, thereby realizing the eccentric adjustment of the eccentric wellhead 1.

[0024] The eccentric wellhead adjustment drive assist device of the oil pumping well of the present invention has the advantages that the operator can accurately control and adjust the rotation angle by driving the chuck 2 to mesh with the gears of the semicircular drive 3 through the thrust bearing 4 at the production site; multiple continuous rotations can be achieved in a narrow space without causing the tool to slip or fly off, and the eccentric wellhead working position can be quickly, efficiently and safely rotated to adjust.

[0025] Example 1

[0026] The eccentric wellhead adjustment driving assist device of the oil pumping well of the present invention has a structure as follows Figure 1 As shown, it includes a driving chuck 2 and a semicircular drive 3 meshing with the driving chuck 2 through gears. The driving chuck 2 is a U-shaped structure. The outer arc surface of the driving chuck 2 is provided with tooth grooves. The middle part of the driving chuck 2 is provided with a U-shaped opening that matches the eccentric wellhead 1. The U-shaped inner cavity is sleeved with a round card 11 for clamping the sucker rod 12. The height of the round card 11 is not less than the height of the driving chuck 2. The round card 11 is a cylindrical structure. The side surface of the cylinder matches the U-shaped inner wall of the driving chuck 2. The cylinder is provided with a mounting groove for clamping the sucker rod 12 during assembly, and the mounting groove extends radially from the axis. The bottom end of the driving chuck 2 is fitted with the upper end surface of the eccentric wellhead 1, and two U-shaped handles 10 are arranged on the upper end surface of the driving chuck 2. A gear is arranged on the arc surface of the semicircular driving 3, and the gear is meshed with the tooth groove of the driving chuck 2. A driving shaft 5 matching with the bolt hole of the wellhead bolt 9 on the end surface of the eccentric wellhead 1 is arranged at the center position of the lower end surface of the semicircular driving 3. A driving special sleeve head 6 used in conjunction with the handle 7 is arranged at the center position of the upper end surface of the semicircular driving 3. A thrust bearing 4 is arranged under the semicircular driving 3, and the thrust bearing 4 is installed on the driving shaft 5. , used in conjunction with the semicircular drive 3, it is convenient for the flexible rotation operation of the semicircular drive 3. A thread connected to the nut 8 is set at the lower end of the drive shaft 5, and the nut 8 is an M27 nut. The drive shaft 5 is inserted into the bolt hole at the upper end of the eccentric wellhead 1, and the special drive sleeve head 6 is nested in the upper end of the semicircular drive 3. The special sleeve head 6 is provided with a through hole nested with the handle 7. A boss is set at one end of the handle 7, and the boss is spherical in shape larger than the diameter of the handle 7. The handle 7 is inserted into the upper through hole of the special sleeve head 6, and the nut 8 is threadedly connected to the lower part of the drive shaft 5.

[0027] The semicircular drive 3 and the drive chuck 2 can rotate along the central axis of the thrust bearing 4. The semicircular drive 3 is provided with gears that mesh with the tooth grooves of the drive chuck 2. The axial rotation of the semicircular drive 3 pushes the drive chuck 2 to rotate in the opposite direction through the gears, thereby realizing the transmission of torque.

[0028] The U-shaped bottom of the driving chuck 2 is clamped on the upper end surface of the eccentric wellhead 1, and the eccentric wellhead 1 is driven to rotate axially along the arc center line of the driving chuck 2 along with the driving chuck 2, thereby realizing the eccentric adjustment of the eccentric wellhead.

[0029] Example 2

[0030] The eccentric wellhead adjustment driving assist device of the oil pumping well of the present invention has a structure as follows Figure 1 and Figure 2 As shown, it includes a driving chuck 2 and a semicircular drive 3 driven by gear meshing. The driving chuck 2 is a U-shaped structure as a whole, and a handle 10 is fixedly connected to the upper end surface of the driving chuck 2 near both ends. The U-shaped inner cavity of the driving chuck 2 is sleeved with a round card 11, and the height of the round card 11 is not less than the height of the driving chuck 2. The round card 11 is a cylindrical structure, and the cylindrical side of the round card 11 matches the U-shaped inner wall of the driving chuck 2. The cylinder is provided with a mounting groove for clamping the sucker rod 12 during assembly, and the mounting groove is a through groove extending radially from the axis.

[0031] The semicircular drive 3 is a semi-cylindrical structure, the arc surface of the semi-cylindrical structure is provided with a gear, the U-shaped outer arc surface of the driving chuck 2 is provided with a tooth groove, the gear and the tooth groove match, the bottom of the semicircular drive 3 is fixed with a thrust bearing 4, the bottom of the thrust bearing 4 is sleeved with a driving shaft 5, the thrust bearing 4 is used in conjunction with the semicircular drive 3, and the semicircular drive 3 is convenient for flexible rotation operation, and the end of the driving shaft 5 away from the thrust bearing 4 passes through the wellhead bolt 9 of the eccentric wellhead 1 and is threadedly connected with a nut 8. The axial rotation of the semicircular drive 3 drives the driving chuck 2 to rotate in the opposite direction through the gear, thereby realizing the transmission of torque. A sleeve head 6 is fixedly connected at the center of the top of the semi-cylinder. The sleeve head 6 is a cylindrical structure. A through hole is penetrated through the side wall of the cylinder. A boss is arranged at one end of the handle 7, and the other end passes through the through holes in sequence. The size of the boss is not less than the size of the through hole. The handle 7 is inserted into the through hole of the special sleeve head 6. The handle 7 drives the special sleeve head 6 and the semi-circular drive 3 to rotate along the central axis of the thrust bearing 4 through external force. The special sleeve head 6 is driven to control the rotation of the semi-circular drive 3 and the drive chuck 2, thereby realizing the eccentric adjustment of the eccentric wellhead 1.

[0032] Example 3

[0033] The eccentric wellhead adjustment driving assist device of the oil pumping well of the present invention has a structure as follows Figure 1 and Figure 3As shown, it includes a driving chuck 2 and a semicircular drive 3 driven by gear meshing. The driving chuck 2 is a U-shaped structure as a whole, and a handle 10 is fixedly connected to the upper end surface of the driving chuck 2 near both ends. The handle 10 is a U-shaped handle, and both ends are fixedly connected to the upper end surface of the driving chuck 2. The U-shaped inner cavity of the driving chuck 2 is sleeved with a round card 11, and the height of the round card 11 is not less than the height of the driving chuck 2.

[0034] like Figure 2 As shown, the semicircular drive 3 is a semi-cylindrical structure, the arc surface of the semi-cylindrical structure is provided with a gear, the U-shaped outer arc surface of the driving chuck 2 is provided with a tooth groove, the gear matches the tooth groove, the bottom of the semicircular drive 3 is fixed with a thrust bearing 4, the bottom of the thrust bearing 4 is sleeved with a driving shaft 5, the thrust bearing 4 is used in conjunction with the semicircular drive 3, and the semicircular drive 3 is convenient for flexible rotation operation, and the end of the driving shaft 5 away from the thrust bearing 4 passes through the wellhead bolt 9 of the eccentric wellhead 1 and is threadedly connected with a nut 8. The axial rotation of the semicircular drive 3 drives the driving chuck 2 to rotate in the opposite direction through the gear, thereby realizing the transmission of torque. A sleeve head 6 is fixedly connected at the center of the top of the semi-cylinder. The sleeve head 6 is a cylindrical structure. A through hole is penetrated through the side wall of the cylinder. A boss is arranged at one end of the handle 7, and the other end passes through the through holes in sequence. The size of the boss is not less than the size of the through hole. The handle 7 is inserted into the through hole of the special sleeve head 6. The handle 7 drives the special sleeve head 6 and the semi-circular drive 3 to rotate along the central axis of the thrust bearing 4 through external force. The special sleeve head 6 is driven to control the rotation of the semi-circular drive 3 and the drive chuck 2, thereby realizing the eccentric adjustment of the eccentric wellhead 1.

Claims

1. An eccentric wellhead adjustment driving assist device for a pumping well, characterized in that: The invention comprises a driving chuck (2) and a semicircular drive (3) which are driven by gear meshing. The driving chuck (2) is in a U-shaped structure as a whole. A round clamp (11) for clamping a sucker rod (12) is sleeved in the U-shaped inner cavity. A thrust bearing (4) is fixedly connected at the bottom center of the semicircular drive (3). A driving shaft (5) is sleeved in the thrust bearing (4).

2. The eccentric wellhead adjustment driving assist device for a pumping well according to claim 1, characterized in that: The semicircular drive (3) is a semi-cylindrical structure, the arc surface of the semi-cylinder is provided with a gear, the U-shaped outer arc surface of the driving chuck (2) is provided with a tooth groove, the gear matches the tooth groove, and a sleeve head (6) is fixedly connected to the center of the top of the semi-cylinder, and a handle (7) is passed through the sleeve head (6).

3. The eccentric wellhead adjustment driving assist device for a pumping well according to claim 2 is characterized in that: The sleeve head (6) is in a cylindrical structure, and a through hole is formed through the side wall of the cylinder. A boss is provided at one end of the handle (7), and the other end passes through the through hole in sequence. The size of the boss is not less than the size of the through hole.

4. The eccentric wellhead adjustment driving assist device for a pumping well according to claim 1, characterized in that: The round clamp (11) is in a cylindrical structure, the side surface of the cylinder matches the U-shaped inner wall of the driving chuck (2), and a mounting groove for clamping the sucker rod (12) during assembly is opened on the cylinder, and the mounting groove extends radially from the axis.

5. The eccentric wellhead adjustment driving assist device for a pumping well according to claim 4 is characterized in that: The height of the circular clamp (11) is not lower than the height of the driving clamp (2).

6. The eccentric wellhead adjustment driving assist device for a pumping well according to any one of claims 1 to 5, characterized in that: The driving chuck (2) is fixedly connected with a handle (10) at the upper end surface near both ends.

7. The eccentric wellhead adjustment driving assist device for a pumping well according to claim 6, characterized in that: The handle (10) is a U-shaped handle, and both ends are fixedly connected to the upper end surface of the driving chuck (2).

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