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Automatic centering platform for lifting and lowering oil pipe and centering method thereof

A technology for automatic centering and running of oil pipes, which is applied in drilling pipes, casings, and earth-moving drilling and production.

Pending Publication Date: 2020-12-11
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] This application provides an automatic centering platform for lifting and lowering the oil pipe and its centering method, which solves the problem that the hydraulic pliers cannot be aligned with the oil pipe joint collar and the difficult centering of the oil pipe, realizes mechanical centering, and avoids centering errors

Method used

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  • Automatic centering platform for lifting and lowering oil pipe and centering method thereof
  • Automatic centering platform for lifting and lowering oil pipe and centering method thereof
  • Automatic centering platform for lifting and lowering oil pipe and centering method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Referring to Figures 1-2, it is a schematic structural diagram of Embodiment 1 of the present invention, an automatic centering platform for lifting and lowering tubing, at least including the wellhead 1, including:

[0034] An operation platform 2, an operation hole is opened at the center of the operation platform 2, and the wellhead 1 is located under the operation hole;

[0035] Buckle device, the buckle device is slidably connected on the operating platform 2, and the sliding direction of the buckle device is the direction of the operation hole

[0036] Pneumatic slip 4, the pneumatic slip 4 is detachably connected in the operation hole, and coaxial with the wellhead 1:

[0037] Self-sealing well sealing device 5, the bottom end of the self-sealing well sealing device 5 is detachably connected to the top of the wellhead 1, and the top end of the self-sealing well sealing device 5 is detachably connected to the bottom end of the pneumatic slip 4;

[0038] The mecha...

Embodiment 2

[0041] refer to figure 1 , the difference of this embodiment is that: the bottom of the operating platform 2 is also vertically fixed with two pairs of legs, the operating platform 2 is a rectangular structure, and the legs are respectively fixed at the four corners of the bottom surface of the operating platform 2, so A ladder 7 is also provided on the operating platform 2 .

[0042] The supporting leg includes a base 21, a sleeve 22, a post 23 and a latch 24, the top of the sleeve 22 is fixed to the operating platform 2, the bottom of the sleeve 22 is inserted into the post 23, and the post 23 is slidably connected On the inner peripheral surface of the sleeve 22, the sleeve 22 is provided with radial lock holes equidistant in the axial direction, and the insertion post 23 is provided with a socket matching the lock hole, and the latch 24 is inserted into the lock hole and the socket , the bottom end of the post 23 is rotationally connected with the center of the top end of...

Embodiment 3

[0046] refer to Figure 4 The difference of this embodiment is that the self-sealing well sealing device 5 includes a housing 51, an oil bag 52 and a self-sealing core 53, the outer circumference of the housing 51 is detachably connected to the operating platform 2, and the housing The bottom end of the body 51 is detachably connected to the wellhead 1. An oil bag 52 is arranged inside the casing 51. An oil inlet 54 is opened on the casing 51 to communicate with the oil bag 52. The self-sealing core 53 is detachably connected to the Inside the housing 51 and under the oil bag 52 .

[0047] In actual use: After the oil pipe is locked by the pneumatic slip 4, oil is injected into the oil bag 52 to expand the oil bag 52, and the casing 51 restricts and pushes the self-sealing core 53 to move inward, thereby driving the oil pipe to the center and making the oil pipe The axis coincides with the inside of the well to prevent the threaded thread from being damaged when the threaded ...

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PUM

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Abstract

The invention relates to the field of oilfield development, and particularly relates to an automatic centering platform for lifting and lowering an oil pipe and a centering method thereof. The automatic centering platform at least comprises a wellhead, an operation platform, a buckling device, a self-sealing blowout preventer and a mechanical arm, wherein an operation hole is formed in the centerof the operation platform, and the wellhead is located below the operation hole; the buckling device is slidably connected to the operation platform, the sliding direction of the buckling device is the direction of the operation hole, and the buckling device is provided with a pneumatic slip which is detachably connected into the operation hole and is coaxial with the wellhead; the bottom end of the self-sealing blowout preventer is detachably connected to the top end of the wellhead, and the top end of the self-sealing blowout preventer is detachably connected with the bottom end of the pneumatic slip; and the mechanical arm is arranged on the operation platform, and a manipulator is arranged on the mechanical arm. According to the automatic centering platform for lifting and lowering theoil pipe and the centering method thereof, the manipulator is controlled to move by the mechanical arm, so that the risk caused by manual righting of workers when the oil pipe is lifted is effectively solved, and the manipulator on the mechanical arm is used for grabbing the oil pipe for centering.

Description

technical field [0001] The invention relates to the field of oil field development, in particular to an automatic centering platform for lifting and lowering oil pipes and a centering method thereof. Background technique [0002] The casing size of oil and gas wells is generally 5-7", and the outer diameter of the tubing run into the casing is 21 / 2"-31 / 2". There is a large gap between the tubing and casing. In addition, due to the The floating sled cannot be centered in the wellbore, so that the tubing is basically run into the well close to the casing wall during the tripping process, and the tubing does not move up and down at the center of the wellbore. During the tripping process, the pneumatic slips When encountering the joint of the oil pipe, block the oil pipe, which is convenient for the hydraulic pliers to make on and off. It is required that the oil pipe must be centered so that the pneumatic slip can open and close freely. If not, the oil pipe joint collar cannot...

Claims

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Application Information

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IPC IPC(8): E21B19/24E21B19/10E21B19/22
CPCE21B19/24E21B19/10E21B19/22
Inventor 白明伟韩静静贾海平张铁军白东丰张联合段晓军闫育东付中新王增元马林昌田军晏军赵恩维唐永生王辉峰雷宗贤李宏宏胡川杰贾凯雄舒刚
Owner BC P INC CHINA NAT PETROLEUM CORP