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String tripping device

A technology for pipe strings and support seats, which is applied in the direction of drilling pipes, casings, drilling equipment, etc., can solve the problems of high operation risk, low work efficiency, discomfort, etc., and achieve the effect of strong practicability and simple structure

Inactive Publication Date: 2013-02-13
SHAANXI QIYUAN TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For many years, my country's oilfield workover has been using the traditional operation method, using crescent elevators to realize the lifting and lowering operation of the pipe string. Each oilfield has a large number of workover equipment, such as drilling rigs, derricks, hydraulic tongs, elevators, etc. The workover operation methods are in urgent need of reform, but they cannot all be discarded. Foreign vehicle-mounted workover rigs have better performance, but require high working conditions , expensive, increased production costs, not suitable for my country's national conditions

Method used

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  • String tripping device

Examples

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Embodiment 1

[0010] The pipe string lifting device described in this embodiment includes a support base 1, on which a power cylinder 2 is fixed, and a slip 3 is movably provided inside the support base 1, and the center of the slip 3 is provided with a hole for the oil pipe to enter and exit. Through holes, the slips 3 are fixedly connected with the power cylinder 2, the slips 3 in the present invention are in the shape of an inverted cone, and the support seat 1 is matched with the slips 3

[0011] When in use, insert the tubing into the center of the slip 3, and when the coupling is encountered, start the power cylinder 2, so that the power cylinder 2 drives the slip 3 to move upward, the circle at the center of the slip 3 expands, and when the pipe string needs to be lifted, After the slip 3 is moved onto the pipe string, the power cylinder 2 moves downward, the circle at the center of the slip 3 shrinks, and the slip 3 clamps the pipe string to pull the pipe string out from the bottom o...

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Abstract

The invention discloses a string tripping device, which relates to a tripping device for tubing strings. The device comprises a supporting seat, a power cylinder is fixedly arranged on the supporting seat, a slip is movably arranged in the supporting seat, the slip is fixedly interconnected with the power cylinder, and the center of the slip is provided with a through hole. According to the string tripping device disclosed by the invention, through carrying out holding on a tubing string, the string can be tripped out of an oil-producing well conveniently. The string tripping device disclosed by the invention is simple in structure and strong in practicability.

Description

technical field [0001] The invention relates to a lifting device for an oil pipe string. Background technique [0002] Oilfield workover operations are mainly to ensure the normal production of oil wells or to overhaul, maintain and adjust oil wells according to production needs. It is an important production link to ensure stable and high production in oil fields. A very heavy job is to lift and lower oil pipes, sucker rods and downhole tools. For many years, my country's oilfield workover has been using the traditional operation method, using crescent elevators to realize the lifting and lowering operation of the pipe string. Each oilfield has a large number of workover equipment, such as drilling rigs, derricks, hydraulic tongs, elevators, etc. The workover operation methods are in urgent need of reform, but they cannot all be discarded. Foreign vehicle-mounted workover rigs have better performance, but require high working conditions , expensive, increased production cos...

Claims

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Application Information

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IPC IPC(8): E21B19/00E21B19/10
Inventor 张淑芬
Owner SHAANXI QIYUAN TECH DEV
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