Jam release device used when keyway of petroleum and natural gas exploitation underground logging instrument is stuck

Abstract

The invention discloses a jam release device used when a keyway of a petroleum and natural gas exploitation underground logging instrument is stuck. The device comprises a bearing cable and the logging instrument electrically connected with the bearing cable; the bearing cable comprises a bearing detection cable and a guide rail sleeve, an upper sliding sleeve is clamped to the outer side of the guide rail sleeve, and a one-way hydraulic cylinder is fixedly arranged at the bottom end of an upper sliding sleeve frame; the bottom end of the one-way hydraulic cylinder is movably inserted into theupper end of a lower sliding sleeve, and mounting bayonets are concavely formed in the two sides of the bottom end of a lower sliding sleeve frame; the mounting bayonets are fixedly arranged at the upper end of a cutting cone cylinder, two cutting side plates are movably hinged to the two sides of the upper end of the cutting cone cylinder, the bearing cable penetrates through the cutting cone cylinder, and the bearing cable is electrically connected with the logging instrument and an infrared distance measuring device at the same time. When the bearing cable is put down or lifted up and thekeyway of the logging instrument is stuck, the keyway jam release device can be put down to the stuck portion of the keyway along the bearing cable from the portion above a well, the keyway is treated, and after jam release, the jam release device returns along with the logging instrument.

Description

technical field [0001] The invention relates to the technical field of oil and natural gas exploitation equipment, in particular to a jam release device for keyway jamming of downhole logging instruments for oil and natural gas exploitation. Background technique [0002] At present, with the continuous development of oil and gas field development technology, there are more and more open hole wells in highly inclined oil and gas fields. During the process of lowering well logging instruments with conventional cables, irregular wellbore trajectories are often encountered. Oil and gas field development geology The conditions are complex, high-inclination, extended-reach directional well technology, and well-depth trajectory control are difficult. Due to the increase in drilling speed and shortened cycle, if the wellbore and mud are not well treated, the wellbore will be unstable and the wellbore trajectory will be poor. , leading to more logging obstacles and stuck situations, ...

AI Technical Summary

Problems solved by technology

When lifting the downhole tool, the cable runs along the deep groove, and when the keyway position is lifted on the logging tool with a diameter larger than the deep groove, it is easy to get stuck

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