Downhole drilling rod fishing system and method

A technology of drill pipe and overshot, which is applied in the field of drilling, can solve problems such as difficult positioning of fishing tools, and achieve the effects of visual positioning and docking, easy operation, and reduced difficulty

Active Publication Date: 2019-06-11
穆素生
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The embodiment of the present application provides an downhole drill pipe fishing system and method to improve the problem of difficult positioning of existing downhole drill pipe fishing tools

Method used

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  • Downhole drilling rod fishing system and method
  • Downhole drilling rod fishing system and method
  • Downhole drilling rod fishing system and method

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Embodiment

[0041] The embodiment of the first aspect of the present application provides a downhole drill pipe fishing system 100, which will be combined below Figure 1-Figure 4 The downhole drill pipe fishing system 100 will be described in detail.

[0042] Such as figure 1 As shown, the downhole drill pipe fishing system 100 includes a guide wire 11, a visual probe 12 and a fishing device 20, the visual probe 12 is configured to detect the position of the drill pipe 30 in the well, and the drill pipe 30 is provided with an inner hole in the axial direction 31. The visual probe 12 is used to connect with the guide wire 11, and the visible probe 12 can pull the guide wire 11 to the inner hole 31; the fisher 20 is configured to fish the drill pipe 30, and the fisher 20 is provided with a central through hole 21; when the guide wire 11 passes through the central through hole 21 and is pulled to the inner hole 31 by the visual probe 12 , the overshot 20 can dock with the drill pipe 30 un...

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Abstract

The invention provides a downhole drilling rod fishing system and method, and relates to the field of well-drilling. The downhole drilling rod fishing system comprises a visual probe, a guiding line and a fishing device. The visual probe is configured as capable of inspecting the position of adownhole drilling rod, an inner hole is radically formed in the drilling rod, the visual probe is used forbeing connected with the guiding line, and the visual probe can pull the guiding line into the inner hole; the fishing device is configured as being capable of fishing the drilling rod, and a centerthrough hole is formed in the fishing device; and when the guiding line is arranged in the center through hole in a penetrating mode and is pulled into the inner hole through the visual probe, the fishing device can be connected with the drilling rod in a butt-joint mode under the guidance of the guiding line. The invention further provides a downhole drilling rod fishing method, the downhole drilling rod fishing method comprises the steps of guiding line lowering, guiding line positioning, fishing device butt-jointing and drilling rod fishing. According to the downhole drilling rod fishing system and method, accurate and visual positioning and butt-jointing are achieved, and the difficulty of fishing work is lowered.

Description

technical field [0001] The present application relates to the field of drilling, and in particular, relates to a downhole drilling pipe fishing system and method. Background technique [0002] During the drilling process, the drill pipe is often broken due to abnormal geological conditions, improper operation of the driller, and poor quality of the drill pipe, and it is necessary to salvage the drill pipe downhole. When fishing the drill pipe, since the drill hole is not a straight hole, it is difficult to accurately determine the specific position and orientation of the downhole drill pipe with high efficiency. Contents of the invention [0003] Embodiments of the present application provide a system and method for fishing downhole drill pipes, so as to improve the problem of difficult positioning of existing downhole drill pipe fishing tools. [0004] In the first aspect, the embodiment of the present application provides an downhole drill pipe fishing system, which inc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B31/18E21B31/20E21B47/002E21B47/09E21B47/01
Inventor 穆素生
Owner 穆素生
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