Novel wellhead-adjustable workover rig

Abstract

The utility model belongs to the technical field of oil and gas well maintenance, and particularly relates to a novel adjustable wellhead type workover rig which comprises a supporting assembly, a workover tractor and a hydraulic rod, the supporting assembly comprises a connecting rod, an adjusting rod and a supporting rod, the adjusting rod slides on the outer side of the connecting rod, the supporting rod is fixedly connected to the bottom end of the adjusting rod, and the hydraulic rod is connected with the adjusting rod. An auxiliary judging block is fixedly connected to one side of the supporting rod, a linkage adjusting block is fixedly connected to one side of the adjusting rod, scales are arranged at the top end of the linkage adjusting block, and a positioning disc is slidably connected to the outer side of the linkage adjusting block; when a worker adjusts the traction position of the maintenance assembly to the position corresponding to the center of the well mouth, the center position of the supporting assembly can be adjusted to correspond to the center position of the well mouth, so that stable supporting is provided for the maintenance assembly, the maintenance assembly can be replaced without removing the whole maintenance assembly from the well mouth, and the maintenance efficiency is improved. And therefore, workers can maintain the oil and gas well conveniently.

Description

Technical Field

[0001] The utility model belongs to the technical field of oil and gas well maintenance, and in particular relates to a novel adjustable wellhead type workover machine. Background Art

[0002] During the production process of oil and gas fields, oil and gas wells often experience underground sand plugging, bending and breaking of pump rods, etc. At this time, a workover rig is needed to pull appropriate equipment downhole to complete operations such as maintenance of the oil and gas wells. However, in actual applications, the wellhead size of oil and gas wells is not fixed, resulting in the inability of traditional workover rigs with fixed specifications to adapt to wellheads of different sizes.

[0003] After searching, the application number CN202320952776.8 of "A novel adjustable wellhead workover rig" has an adjustable support base including an adjustment block, a lateral adjustment rod, a vertical adjustment rod, a lateral hollow rod, a vertical hollow rod and a support leg. When in use, the size and shape of the workover rig support base can be adjusted according to the wellhead style and wellhead size of the wellhead, so that it is suitable for use with different wellheads. The adjustable support frame includes a workbench, a hollow sliding seat, an adjustment plate, a rotating shaft and a workover tractor, so that the maintenance component can be ensured to be in the center of the wellhead when in use.

[0004] However, in actual applications, when performing maintenance operations on oil and gas wells, it is often necessary to tow multiple equipment in sequence. Although the above-mentioned well repair rig meets the requirements of being suitable for wellheads of different sizes and adjusting the maintenance components that need to be towed to the center of the wellhead, when the staff adjusts the maintenance components to the center of the wellhead, due to the lack of a positioning structure, it is impossible to ensure that the center position of the support base corresponds to the center position of the wellhead after adjustment, resulting in an inability to provide stable support force for the maintenance components located at the center of the wellhead. In addition, when replacing the towed maintenance components or removing the maintenance components from the well, the staff needs to move the well repair rig out of the wellhead first before disassembling and assembling the towed facilities and the well repair rig. However, after the well repair rig is moved out of the wellhead and used again, the staff needs to adjust the position of the maintenance components again, resulting in more complicated operations required by the staff. Utility Model Content

[0005] The utility model provides a novel adjustable wellhead workover machine, which has the characteristics that the positions of a maintenance component and a support component can be adjusted to correspond to the center position of the wellhead, and when the maintenance component is replaced, the device does not need to be removed from the wellhead.

[0006] The utility model provides the following technical solution: it includes a support assembly, a well repair tractor and a hydraulic rod, the support assembly includes a connecting rod, an adjusting rod and a support rod, the adjusting rod slides on the outside of the connecting rod, the support rod is fixedly connected to the bottom end of the adjusting rod, one side of the support rod is fixedly connected with an auxiliary judgment block, one side of the adjusting rod is fixedly connected with a linkage adjustment block, the top of the linkage adjustment block is provided with a scale, the outside of the linkage adjustment block is slidably connected with a positioning plate, the top of the positioning plate is slidably connected with a locking block, a lifting plate is provided above the positioning plate, the well repair tractor is installed on the top of the lifting plate, and the hydraulic rod is installed between the positioning plate and the lifting plate.

[0007] Wherein, a plurality of alignment grooves are provided inside the linkage adjustment block, and the engaging block slides inside the alignment grooves.

[0008] Wherein, a mounting plate is installed at the bottom end of the well repair tractor, a clearance cavity is opened inside the positioning plate, and the position of the mounting plate corresponds to the clearance cavity.

[0009] Among them, a guide rod is fixedly connected to the bottom end of the lifting plate, a limiting groove is arranged inside the positioning plate, and the guide rod slides inside the limiting groove.

[0010] Wherein, a sliding groove is provided inside the positioning plate, and the linkage adjustment block slides inside the sliding groove.

[0011] The beneficial effect of the utility model is that through the cooperation of components such as the linkage adjustment block and the positioning plate, when the staff adjusts the traction position of the maintenance component to the corresponding position of the wellhead center, the center position of the support component can also be adjusted to correspond to the center position of the wellhead, thereby providing stable support for the maintenance component, and the operation of replacing the maintenance component can be completed without removing the entire component from the wellhead, thereby facilitating the staff's maintenance operations on oil and gas wells.

[0012] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0014] Figure 2 This is a schematic diagram of the disassembled structure of the utility model;

[0015] Figure 3 for Figure 1 A magnified schematic diagram of center A.

[0016] In the figure: 1. Support assembly; 11. Connecting rod; 12. Adjusting rod; 13. Support rod; 2. Auxiliary judgment block; 3. Linkage adjustment block; 31. Scale; 32. Alignment groove; 4. Positioning plate; 41. Engaging block; 42. Lifting plate; 43. Well repair tractor; 44. Hydraulic rod; 45. Mounting plate; 46. Make way cavity; 47. Guide rod; 48. Limiting groove; 49. Sliding groove. DETAILED DESCRIPTION

[0017] See also Figure 1-Figure 3 The utility model provides the following technical solutions: including a support assembly 1, a well repair tractor 43 and a hydraulic rod 44, the support assembly 1 includes a connecting rod 11, an adjusting rod 12 and a support rod 13, the adjusting rod 12 slides on the outside of the connecting rod 11, the support rod 13 is fixedly connected to the bottom end of the adjusting rod 12, one side of the support rod 13 is fixedly connected with an auxiliary judgment block 2, one side of the adjusting rod 12 is fixedly connected with a linkage adjustment block 3, the top of the linkage adjustment block 3 is provided with a scale 31, the outer side of the linkage adjustment block 3 is slidably connected with a positioning plate 4, the top of the positioning plate 4 is slidably connected with a locking block 41, a lifting plate 42 is provided above the positioning plate 4, the well repair tractor 43 is installed at the top of the lifting plate 42, and the hydraulic rod 44 is installed between the positioning plate 4 and the lifting plate 42.

[0018] In this embodiment: the support assembly 1 is used to support and connect various components, so as to achieve the purpose of sending the maintenance assembly into the well through the cooperation of other components. The support assembly 1 includes a connecting rod 11, an adjusting rod 12 and a support rod 13. The connecting rod 11 and the adjusting rod 12 can slide with each other, and the support rod 13 is used to provide support for the connecting rod 11 and the adjusting rod 12. When the support rod 13 reaches the outside of the wellhead, the staff can slide between the connecting rod 11 and the adjusting rod 12 to achieve the purpose of adapting to wellheads of different sizes. The staff can connect the connecting rod 11 with machinery such as a crane to achieve the purpose of placing the connecting rod 11 and the adjusting rod 12 outside the wellhead. An auxiliary judgment block 2 is fixed on one side of the support rod 13. The auxiliary judgment block 2 is used to locate the position of the connecting rod 11 and the adjusting rod 12. There are four auxiliary judgment blocks 2. The staff can slide the four auxiliary judgment blocks 2 separately The method of contacting the inner wall of the wellhead makes the center positions of the connecting rod 11 and the adjusting rod 12 correspond to the center position of the wellhead, so that when the maintenance component is located at the center position of the wellhead, the connecting rod 11 and the adjusting rod 12 can provide a stable supporting force for the maintenance component, and a linkage adjustment block 3 is fixed on one side of the adjusting rod 12. The linkage adjustment block 3 is used to provide support to the positioning disk 4 through the connecting rod 11 and the adjusting rod 12, and the positioning disk 4 slides on the outside of the linkage adjustment block 3, so that when the staff has adjusted the positions of the connecting rod 11 and the adjusting rod 12, the positioning disk 4 can be slid to make the positioning disk 4 be located on the inner side of the connecting rod 11 and the adjusting rod 12, and the top of the linkage adjustment block 3 is provided with a scale 31, and the scale 31 is engraved on the top of the linkage adjustment block 3. The scale 31 is used to assist in adjusting the position of the positioning disk 4. The staff can expose several linkage adjustment blocks 3 at the same length outside the positioning disk 4, so that the positioning disk 4 is located at the center position of the connecting rod 11 and the adjusting rod 12. Since the center position of the connecting rod 11 and the adjusting rod 12 corresponds to the center position of the wellhead, the position of the positioning disk 4 corresponds to the center position of the wellhead. The top sliding of the positioning disk 4 has a scale 31. After adjusting the position of the positioning disk 4, the staff can slide the engaging block 41 into the inside of the linkage adjustment block 3 to engage the linkage adjustment block 3 and the positioning disk 4, ensuring that the positioning disk 4 will not move relative to the linkage adjustment block 3, so that the position of the positioning disk 4 continues to be aligned with the wellhead. The center positions correspond, and since the linkage adjustment block 3 cannot move relative to the positioning disk 4, the distance between the linkage adjustment blocks 3 will be fixed, that is, the positions of the connecting rod 11 and the adjusting rod 12 will be fixed, so that the connecting rod 11 and the adjusting rod 12 will not have unnecessary displacement when providing support to the positioning disk 4, thereby ensuring that the center positions of the connecting rod 11 and the adjusting rod 12 will continue to correspond to the center position of the wellhead, so that the connecting rod 11 and the adjusting rod 12 can continue to provide stable support for the positioning disk 4. A lifting plate 42 is provided above the positioning disk 4. The lifting plate 42 is used to support the installation of a well repair tractor 43. The well repair tractor 43 is used to tow and drive the maintenance component.The maintenance components can be sent downhole to complete the well repair operation. When the maintenance components need to be replaced, the hydraulic rod 44 installed between the positioning plate 4 and the lifting plate 42 will lift the lifting plate 42, so that a certain distance is generated between the lifting plate 42 and the positioning plate 4, which is enough for the well repair tractor 43 to pull the maintenance components from the well to the outside, so that the staff can directly remove the maintenance components and replace them, and then complete the maintenance of the oil and gas wells through different maintenance components.

[0019] A plurality of alignment grooves 32 are provided inside the linkage adjustment block 3, and the locking block 41 slides inside the alignment grooves 32; the alignment grooves 32 provided inside the linkage adjustment block 3 are used to make space for the insertion of the locking block 41, so that when the staff slides the positioning disk 4 to a suitable position outside the linkage adjustment block 3, the position of the positioning disk 4 can be limited by sliding the locking block 41 to the inside of the positioning disk 4 and the linkage adjustment block 3, so that the positioning disk 4 can be adjusted and fixed to the corresponding position of the wellhead center.

[0020] A mounting plate 45 is installed at the bottom end of the well repair tractor 43, and a clearance cavity 46 is opened inside the positioning plate 4, and the position of the mounting plate 45 corresponds to the clearance cavity 46; the mounting plate 45 fixed at the bottom end of the well repair tractor 43 is used to connect and fix the maintenance component, and a traction rope is received inside the well repair tractor 43, and the traction rope is connected to the mounting plate 45, so that when the staff connects the maintenance component to the mounting plate 45, the well repair tractor 43 can send the maintenance component into the well to complete the well repair operation, and the clearance cavity 46 opened inside the positioning plate 4 is used to make way for the movement of the mounting plate 45 and the maintenance component, so that the well repair tractor 43 can send the maintenance component into the well through the mounting plate 45 to perform maintenance operations on the oil and gas wells.

[0021] A guide rod 47 is fixedly connected to the bottom end of the lifting plate 42, and a limiting groove 48 is provided inside the positioning plate 4, and the guide rod 47 slides inside the limiting groove 48; the guide rod 47 fixed at the bottom end of the lifting plate 42 is used to guide and limit the sliding of the lifting plate 42 relative to the positioning plate 4, and a limiting groove 48 is provided inside the positioning plate 4, and the guide rod 47 slides inside the limiting groove 48, so that the lifting plate 42 will be guided by the guide rod 47 when sliding, thereby avoiding the lifting plate 42 from being offset, so that the position of the lifting plate 42 will continue to be located at the corresponding position of the center of the wellhead.

[0022] A sliding groove 49 is provided inside the positioning disk 4, and the linkage adjustment block 3 slides inside the sliding groove 49; the sliding groove 49 provided inside the positioning disk 4 is used to make space for the sliding of the linkage adjustment block 3, so that the positioning disk 4 can slide on the outside of the linkage adjustment block 3. The staff can slide the positioning disk 4 to a position corresponding to the center of the wellhead, thereby ensuring that the well repair tractor 43 can deliver the maintenance component from the center of the wellhead to the well.

[0023] The working principle and use process of the utility model are as follows: when the staff needs to perform maintenance operations on the oil and gas well, they can first use the crane to send the connecting rod 11 and the adjusting rod 12 to the wellhead position, and then the staff can slide the connecting rod 11 and the adjusting rod 12 to make the auxiliary judgment block 2 fixed on one side of the support rod 13 contact the inner wall of the wellhead. At this time, the center position of the inner side of the connecting rod 11 and the adjusting rod 12 corresponds to the center position of the wellhead. Then the staff can slide the positioning disk 4 on the outside of the linkage adjustment block 3, and with the assistance of the scale 31, make the four linkage adjustment blocks 3 exposed to the outside of the positioning disk 4 at the same distance. At this time, the positioning disk 4 will be located at the center position of the inner side of the connecting rod 11 and the adjusting rod 12, that is, the center position of the wellhead. Then the staff can slide the locking block 41 to the inside of the positioning disk 4 and the linkage adjustment block 3, so that the linkage adjustment block 3 and the positioning disk 4 are locked and limited, and then the staff can start The hydraulic rod 44 drives the lifting plate 42 to move vertically upward, and the guide rod 47 fixed at the bottom end of the lifting plate 42 will slide inside the positioning plate 4, so that the lifting plate 42 will not deviate during movement, ensuring that the center positions of the lifting plate 42 and the positioning plate 4 continue to correspond. Then the staff can connect the maintenance component with the installation plate 45, and then start the well repair tractor 43, so that the well repair tractor 43 can send the maintenance component from the center of the wellhead into the well through the installation plate 45. When the maintenance component needs to be replaced, the well repair tractor 43 will first pull the maintenance component to the wellhead, and then the hydraulic rod 44 will lift the lifting plate 42 again, so that a certain distance is generated between the lifting plate 42 and the positioning plate 4, which is enough for the well repair tractor 43 to pull the maintenance component from the well to the outside, so that the staff can directly remove and replace the maintenance component, and then complete the maintenance work on the oil and gas well through different maintenance components.

Claims

1. A novel adjustable wellhead workover rig, comprising a support assembly (1), a workover tractor (43) and a hydraulic rod (44), characterized in that: The support assembly (1) comprises a connecting rod (11), an adjusting rod (12) and a supporting rod (13); the adjusting rod (12) slides on the outside of the connecting rod (11); the supporting rod (13) is fixedly connected to the bottom end of the adjusting rod (12); one side of the supporting rod (13) is fixedly connected to an auxiliary judgment block (2); one side of the adjusting rod (12) is fixedly connected to a linkage adjustment block (3); a scale (31) is provided at the top of the linkage adjustment block (3); a positioning plate (4) is slidably connected to the outside of the linkage adjustment block (3); a locking block (41) is slidably connected to the top of the positioning plate (4); a lifting plate (42) is provided above the positioning plate (4); the well repair tractor (43) is installed at the top of the lifting plate (42); and the hydraulic rod (44) is installed between the positioning plate (4) and the lifting plate (42).

2. The novel adjustable wellhead workover rig according to claim 1 is characterized in that: A plurality of alignment grooves (32) are provided inside the linkage adjustment block (3), and the engaging block (41) slides inside the alignment grooves (32).

3. The novel adjustable wellhead workover rig according to claim 1 is characterized in that: A mounting plate (45) is installed at the bottom end of the well repair tractor (43), a clearance cavity (46) is opened inside the positioning plate (4), and the position of the mounting plate (45) corresponds to the clearance cavity (46).

4. The novel adjustable wellhead workover rig according to claim 1 is characterized in that: A guide rod (47) is fixedly connected to the bottom end of the lifting plate (42), a limiting groove (48) is provided inside the positioning plate (4), and the guide rod (47) slides inside the limiting groove (48).

5. The novel adjustable wellhead workover rig according to claim 1 is characterized in that: A sliding groove (49) is provided inside the positioning plate (4), and the linkage adjustment block (3) slides inside the sliding groove (49).

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