Wellhead compensation device for thermal oil extraction

Abstract

The utility model discloses a thermal oil extraction compensation wellhead device which comprises a compensator and a connecting cylinder, flanges are arranged at the end of the connecting cylinder and the end of the compensator respectively, the connecting cylinder is fixedly connected with the compensator, a plurality of protruding blocks are arranged on the flanges at the two ends of the compensator respectively, a lead screw is connected between every two protruding blocks in a sliding mode, and the connecting cylinder is fixedly connected with the connecting cylinder. Adjusting components are installed on the multiple protruding blocks respectively, each adjusting component comprises a sleeve, a rotating shaft, a cam and a supporting block, and the multiple supporting blocks are arranged in an arc shape and installed on flanges at the two ends of the compensator in an annular array mode. The device has the advantages that when the cam rotates along with the rotating shaft, the supporting block on one side can be extruded to slide on the compensator flange, meanwhile, the connecting cylinder can be pushed to move, the position of the connecting cylinder can be finely adjusted, a flange hole in the connecting cylinder and a flange hole in the end of the compensator can be conveniently aligned and fixed through a screw, and the installation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oilfield drilling equipment, in particular to a thermal oil production compensation wellhead device. Background Art

[0002] The bottom flange welded to the surface fixed pipe of the thermal recovery wellhead is connected to the upper flange, and then the flange is hard-connected to the pipeline. Due to the principle of thermal expansion and contraction, the wellhead makes the ground pipeline prone to deformation, twisting and fracture. At this time, a compensator needs to be installed between the pipelines to compensate for the thermal expansion and contraction caused by temperature changes in the pipeline to ensure the normal operation of the thermal recovery wellhead.

[0003] In the prior art, when the compensator is connected to the external pipeline, the screw holes on the flange on the external pipeline need to be accurately and correctly aligned with the screw holes on the flange on the compensator, and fixed with screws. Since the pipeline is heavy, it is inconvenient to adjust the pipeline to align with the screw holes on the compensator during installation, resulting in poor installation efficiency. Utility Model Content

[0004] The purpose of the utility model is to solve the following shortcomings in the prior art and the problems existing in the prior art, and to propose a thermal oil production compensation wellhead device.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A thermal oil production compensation wellhead device comprises a compensator and a connecting tube, the connecting tube and the compensator end are respectively provided with flanges, the connecting tube and the compensator are fixedly connected; a plurality of protrusions are respectively provided on the flanges at both ends of the compensator, a screw rod is slidably connected between two of the protrusions, and adjustment components are respectively installed on the plurality of protrusions, the adjustment components comprise a sleeve, a rotating shaft, a cam, and a support block, the plurality of support blocks are all arranged in an arc shape, and are installed in a ring array on the flanges at both ends of the compensator, the sleeve is fixedly connected to the side wall of the protrusion, the rotating shaft is rotatably connected in the sleeve, the cam is fixedly connected to one end of the rotating shaft, and the cam is located on one side of the support block.

[0007] In order to better achieve the above-mentioned purpose, the utility model adopts a further technical solution: the adjusting component also includes a square cavity and a push plate, the square cavity is fixedly connected to the compensator, one end of the push plate is slidably connected in the square cavity, a tension spring is provided between the lower end of the push plate and the bottom wall of the square cavity, the end of the rotating shaft away from the cam is provided with a tooth pattern, the upper end of the push plate is also provided with a tooth pattern, the rotating shaft is meshingly connected with the push plate, the first screw nut is respectively threadedly connected to the screw rod, and the first screw nut is fixedly connected to a support rod.

[0008] In order to better achieve the above purpose, the utility model adopts a further technical solution: an inflatable bag is sleeved on the screw rod, the inflatable bag is located between the first screw cap and the second screw cap, and a connecting pipe is fixedly connected between the inflatable bag and the square cavity.

[0009] The utility model has the advantages that when the cam rotates with the rotating shaft, it can squeeze the support block on one side to slide on the compensator flange, and at the same time can push the connecting tube to move, which has the effect of fine-tuning the position of the connecting tube, making it easy to align the flange hole on the connecting tube with the flange hole at the end of the compensator and fix them with screws, thereby improving the installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a front structural schematic diagram of the thermal oil production compensation wellhead device proposed by the utility model;

[0011] Figure 2 for Figure 1 A partial enlarged view of middle A.

[0012] In the figure: 1 connecting tube, 2 screw rod, 3 first screw cap, 4 inflatable bag, 5 second screw cap, 6 compensator, 7 convex block, 8 support rod, 9 support block, 10 cam, 11 sleeve, 12 rotating shaft, 13 push plate, 14 connecting tube, 15 square cavity. DETAILED DESCRIPTION

[0013] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0014] Reference Figure 1-Figure 2As shown, the thermal oil production compensation wellhead device includes a compensator 6 and a connecting tube 1. The ends of the connecting tube 1 and the compensator 6 are respectively provided with flanges. The connecting tube 1 and the compensator 6 are fixedly connected. The compensator 6 and the connecting tube 1 are fixed by screws through the flanges. A plurality of protrusions 7 are respectively provided on the flanges at both ends of the compensator 6. A screw rod 2 is slidably connected between the two protrusions 7. The screw rod 2 is respectively threaded with a first screw cap 3 and a second screw cap 5. A support rod 8 is fixedly connected to the first screw cap 3. By pushing the support rod 8, the first screw cap 3 can be easily driven to rotate. An inflatable bag 4 is sleeved on the screw rod 2. A connecting pipe 14 is fixedly connected between the inflatable bag 4 and the square cavity 15. The inflatable bag 4 is located between the first wire cap 3 and the second wire cap 5. The inflatable bag 4 is slidably connected to the screw rod 2. The screw rod 2 passes through two protrusions 7 located on the same horizontal line. Adjustment components are respectively installed on multiple protrusions 7. The adjustment components include a sleeve 11, a rotating shaft 12, a cam 10, and a support block 9. Multiple support blocks 9 are all arranged in an arc shape and are installed in a ring array on the flanges at both ends of the compensator 6. The support block 9 is slidably connected to the flange at the end of the compensator 6. The sleeve 11 is fixedly connected to the side wall of the protrusion 7. The rotating shaft 12 is rotatably connected in the sleeve 11. The cam 10 is fixedly connected to one end of the rotating shaft 12, and the cam 10 is located on one side of the support block 9.

[0015] The adjusting component also includes a square cavity 15 and a push plate 13. The square cavity 15 is fixedly connected to the compensator 6. One end of the push plate 13 is slidably connected in the square cavity 15. A tension spring is provided between the lower end of the push plate 13 and the bottom wall of the square cavity 15. The tension spring is used to pull the push plate 13 downward and drive the rotating shaft 12 and the cam 10 to reset and move. The end of the rotating shaft 12 away from the cam 10 is provided with a tooth pattern, and the upper end of the push plate 13 is also provided with a tooth pattern. The rotating shaft 12 is meshed and connected with the push plate 13.

[0016] When the utility model is used, the flange at the end of the connecting tube 1 is first fitted with the flange at the end of the compensator 6. At this time, the flange at the end of the connecting tube 1 is between multiple supporting blocks 9. When the flange hole on the connecting tube 1 and the flange hole at the upper end of the compensator 6 need to deviate and need to be aligned, by rotating the first screw nut 3, the first screw nut 3 will move on the screw rod 2 and squeeze the inflatable bag 4. The gas in the inflatable bag 4 is transmitted to the square cavity 15 through the connecting pipe 14. When the gas in the square cavity 15 increases, the push plate 13 can be pushed to move up and stretch the tension spring. As the push plate 13 moves up, the rotating shaft 12 can be driven to rotate. When the cam 10 rotates with the rotating shaft 12, it can squeeze the supporting block 9 on one side to slide on the flange of the compensator 6, and at the same time, it can push the connecting tube 1 to move, which has a fine-tuning effect on the position of the connecting tube 1, so that the flange hole on the connecting tube 1 is aligned with the flange hole at the end of the compensator 6 and fixed with screws, thereby improving the installation efficiency.

Claims

1. A thermal oil production compensating wellhead device, comprising a compensator (6) and a connecting tube (1), characterized in that: The connecting tube (1) and the compensator (6) are respectively provided with flanges at their ends, and the connecting tube (1) and the compensator (6) are fixedly connected; a plurality of protrusions (7) are respectively provided on the flanges at both ends of the compensator (6); a screw rod (2) is slidably connected between two of the protrusions (7); and adjustment components are respectively installed on the plurality of protrusions (7), the adjustment components comprising a sleeve (11), a rotating shaft (12), a cam (10), and a support block (9); the plurality of support blocks (9) are all arranged in an arc shape and are installed in a ring array on the flanges at both ends of the compensator (6); the sleeve (11) is fixedly connected to the side wall of the protrusion (7); the rotating shaft (12) is rotatably connected in the sleeve (11); the cam (10) is fixedly connected to one end of the rotating shaft (12); and the cam (10) is located on one side of the support block (9).

2. The thermal oil recovery compensation wellhead device according to claim 1 is characterized in that The adjusting component further comprises a square cavity (15) and a push plate (13), wherein the square cavity (15) is fixedly connected to the compensator (6), one end of the push plate (13) is slidably connected in the square cavity (15), a tension spring is arranged between the lower end of the push plate (13) and the bottom wall of the square cavity (15), a tooth pattern is provided at one end of the rotating shaft (12) away from the cam (10), and a tooth pattern is also provided at the upper end of the push plate (13), the rotating shaft (12) is meshingly connected to the push plate (13), and a first thread nut (3) and a second thread nut (5) are respectively threadedly connected to the screw rod (2), and a support rod (8) is fixedly connected to the first thread nut (3).

3. The thermal oil recovery compensation wellhead device according to claim 2, characterized in that: An inflatable bag (4) is sleeved on the screw rod (2), the inflatable bag (4) is located between the first screw cap (3) and the second screw cap (5), and a connecting pipe (14) is fixedly connected between the inflatable bag (4) and the square cavity (15).

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