Deep well measuring instrument conveying device and method

Abstract

The invention discloses a deep well measuring instrument conveying device and method. The conveying device comprises a well logging assembly or at least two well logging assemblies connected in series, a drill rod, a screw drill and a front guide drill bit, wherein the well logging assembly is composed of inverted well drill bits, instrument working cabins and instrument working cabin fixing devices. The method for conveying an underground measuring instrument comprises the steps of lowering and lifting. The rotation power of the front guide drill bit is provided by the upper screw drill, blocked rock blocks encountered in the lowering process are crushed, the instrument working cabins are prevented from rotating in the lowering process, and smooth lowering is guaranteed. The underground measuring instrument is integrated in the instrument working cabins, the multiple instrument working cabins can be installed at the same time, and simultaneous measurement is conducted on well sectionsof different depths. The upper portion of each instrument working cabin fixing device is in threaded connection with one inverted well drill bit, the whole conveying device is driven by a drilling machine to slowly rotate during lifting, the drill bits slowly rotate, the collapsed rock blocks are cut and crushed, and the instrument working cabins are rapidly lifted out of trouble.

Description

technical field [0001] The invention belongs to the field of geophysical detection, and in particular relates to a deep well measuring instrument delivery device and method. Background technique [0002] Well logging technology is widely used in resource exploration and engineering exploration, also known as geophysical well logging, which measures the electrochemical properties, electrical conductivity, acoustic properties, radioactivity and other geophysical properties of open-hole well wall rock formations through measuring instruments. One of the applied geophysical methods. [0003] With the increase of drilling depth and the improvement of logging requirements, measuring instruments are required to perform long-term (3-5 years) measurements in deep wells. The construction environment of high pressure, high temperature and complex formation composition in deep wells puts forward special requirements for downhole instrument installation equipment. The safety and reliab...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a deep well surveying instrument delivery device and method to solve the problems of the surveying instrument being stuck when working in a deep well, collapsed and falling blocks, resulting in difficulty in lifting, etc.

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