Logging equipment and coring and sampling method

Abstract

The invention provides logging equipment and a coring and sampling method. The logging equipment comprises a main body, a sampling mechanism, a coring mechanism and an electronic control device. The sampling mechanism comprises a probe and a first push and backup arm retractably arranged on the two opposite sides of the main body. The coring mechanism comprises a coring drilling bit and a second push and backup arm retractably arranged on the two opposite sides of the main body. The electronic control device is used for controlling the main body, the sampling mechanism and the coring mechanismto carry out the sampling and coring operations, wherein the second push and backup arm can be used as a reverse push and backup arm of the sampling mechanism, and the first push and backup arm can be used as a reverse push and backup arm of the coring mechanism. According to the logging equipment and the coring and sampling method, the logging equipment which can complete coring and sampling operations at the same time by going down to a well once is achieved, and the first push and backup arm and the second push and backup arm can be correspondingly used for carrying out reverse push and backup operations, and the self-clamping-removal operation in the coring and sampling process is realized respectively. The logging equipment is easy and convenient to operate, the logging efficiency iseffectively improved, and the cost is reduced.

Description

technical field [0001] The invention relates to the technical field of well logging, and more specifically, to a well logging instrument and a coring sampling method. Background technique [0002] In the field of petroleum exploration and development, it is very important to accurately evaluate the quality of oil and gas layers and estimate the effective thickness and production capacity of oil and gas layers by using formation testing instruments to go deep into the well for formation pressure measurement, formation fluid identification and sampling analysis, core collection, etc. At present, with the continuous improvement and deepening of domestic oil exploration technology, the development of integrated and high-efficiency formation testing instruments has become a development demand for improving oil recovery efficiency and oil and gas quality. [0003] Due to complex underground geological conditions and harsh environment, the configuration of electronic control device...

AI Technical Summary

Problems solved by technology

In the actual operation process, it can be found that this working method is cumbersome and time-consuming, and the logging efficiency is relatively low and the energy consumption is high

At the same time, in order to solve the problem of sticking when the instrument is retracted, it is usually necessary to install a reverse thrust arm group on the formation tester to realize the jamming, which means that the structural components of the instrument are increased, which further increases the weight and energy consumption of the instrument. It is difficult to improve the operation efficiency of the whole logging process

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