A high-efficiency entry-fishing tool for measurement-while-drilling

Abstract

The invention relates to a high-efficiency well-entry-fishing tool for measurement-while-drilling and well-logging in the oil and gas industry. It can effectively solve the problem of low well-entry efficiency of the key-type measurement-while-drilling instrument. Its technical scheme: the lower part of the fishing head is placed in the upper joint, the top of the fishing head is set as a conical mushroom cap, the middle part of the fishing head is matched with the upper part of the inner cavity of the upper joint, and the upper end of the connecting rod is connected with the boss of the lower part of the fishing head through a connecting pin , the lower end of the connecting rod is connected with the support wing by shear nails, and the support wing is connected with the semicircular boss in the middle of the upper joint by a positioning pin; A horse-tooth buckle is provided, and the lower end of the upper joint is connected to the upper end of the lower joint through the horse-tooth buckle; an annular card slot is provided near the end surface of the inner cavity at the bottom of the lower joint. The invention greatly improves the well-entry efficiency of the measuring-while-drilling instrument, saves the tool entry time, and saves the construction cost.

Description

technical field [0001] The invention relates to a high-efficiency well-entry-fishing tool for measurement-while-drilling and well-logging in the petroleum and natural gas industry. Background technique [0002] Measuring-while-drilling instrument is mainly used for construction team to measure wellbore trajectory parameters while drilling, including: inclination angle, azimuth angle, tool face angle and auxiliary parameters such as temperature, etc. Among them, the seat key type measuring while drilling can effectively use the seat key to determine the direction of the tool face, identify the inclination angle and azimuth angle, and facilitate directional construction. When the seat key measuring while drilling is put into the well, it needs to be placed in a drill string, and there is a seat key joint at the bottom of the inner cavity of the drill string to cooperate with it; when the drill string carries the seat key measuring while drilling into the well, if the If the i...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is: in order to solve the problem that the key-type measuring instrument while drilling is often disconnected due to the fast running speed when the drilling string is lowered into the well, and to complete the work of entering the well quickly and effectively, a portable measuring instrument is specially provided. Drilling and measuring high-efficiency well entry-fishing tools

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