Tool string locating device

A technology of positioning device and tool string, which is applied in construction and other directions, and can solve problems such as aggravated accidents, easy cutting of steel wires, and tool string falling into wells

Pending Publication Date: 2020-10-23
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a tool string positioning device to solve the technical problem that the steel wire is easily cut off when the first production main valve is closed to test the position of the tool string, causing the tool string to fall into the well, aggravating the accident, and being unable to perform pressure relief to solve the wellhead sticking accident.

Method used

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Examples

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Embodiment Construction

[0040] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0041] figure 1 It is a structural schematic diagram of Embodiment 1 of the tool string positioning device of the present invention, refer to figure 1 , the embodiment of the present invention provides a tool string positioning device, including a magnetic signal generator 10 arranged at the bottom of the tool string 30 and a first magnetic signal detector 20 arranged at the first production main valve 41 of the Christmas tree 40, the first magnetic signal The signal detector 20 determines the position of the tool string 30 by s...

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PUM

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Abstract

The invention provides a tool string locating device. The tool string locating device comprises a magnetic signal generator arranged at the bottom end of a tool string, and a first magnetic signal detector arranged on a first production main valve of a Christmas tree; and the position of the tool string is determined through induction of magnetic signals emitted from the magnetic signal generatorby the first magnetic signal detector. According to the tool string locating device, the position of the tool string is determined through detection of the magnetic signals emitted from the magnetic signal generator by the first magnetic signal detector so as to judge whether the first production main valve can be closed or not for pressure relief; the accident of drill jamming at a wellhead is avoided, and the first production main valve does not need to be closed directly for detecting the position of the tool string; and the accident handling efficiency is improved, so that the production efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of oil and gas field dynamic monitoring, in particular to a tool string positioning device. Background technique [0002] During the development of oil and gas fields, it is necessary to perform wax removal, testing, and well testing on the wellbore to ensure that the wellbore is unobstructed, to obtain important information such as formation data and production parameters, to ensure the normal production of oil and gas wells, and to guide the next production adjustment of the oil and gas field. In the actual work process, due to the complex production conditions of oil and gas wells, there are accidents such as wellhead sticking, which lead to the failure of normal production of oil and gas wells. [0003] When stuck pipe occurs at the wellhead, the depth data of the drawworks is inaccurate, and the specific position of the tool string cannot be judged. Usually, the field workers test the position of the t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/092
Inventor 张洁补璐璐周博马泽萍梁洪涛赵丹阳苟柱银杨博屈洋陈萍王祥
Owner PETROCHINA CO LTD
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