Bamboo joint connecting method of logger string

Abstract

The invention discloses a bamboo joint connecting method of a logger string. The logging instrument string includes a position energy spectrum, a compensated neutron, a litho-density, a digital acoustic wave and a hole diameter logger that are sequentially strung, wherein a rotary short joint is connected between the compensated neutron and the litho-density; the loggers are connected through threaded draw rings; protective caps are arranged at the front and the rear ends of the logger string; a pose keeper is arranged between the rotary short joint and the litho-density; the hole diameter logger adopts a plate spring hole diameter logger; independent power supply units adopting high temperature-resistant lithium battery to supply power are arranged in all the loggers of the logger string; and a flexible short joint is arranged between the litho-density and the digital acoustic wave. As the independent power supply units adopting high temperature-resistant lithium battery to supply power are arranged in all the loggers of the logger string, the logging efficiency and safety are improved; and as the loggers are connected through the threaded draw rings with the combination of the pose keeper and the flexible short joint, the logger string is not only convenient to detach, but also improves the accuracy of the measurement data.

Description

technical field [0001] The invention relates to the field of well logging equipment, in particular to a method for connecting bamboo joints of well logging instruments. Background technique [0002] In oil and natural gas exploration and development operations, in order to accurately obtain geological data of underground oil reservoirs, it is necessary to continuously put various logging instruments downhole for logging during drilling operations, because each instrument can only measure one type of downhole data In the past, when logging, it was necessary to put various instruments into the well for logging, and then replace another instrument after collecting data. Due to the variety of instruments, the number of operations required is also high, resulting in high labor intensity and low efficiency. . Later, instrument strings appeared, that is, connecting various logging instruments into a string, and deploying multiple instruments for logging at one time, so that multip...

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Problems solved by technology

[0004] The purpose of the present invention is to propose a connection method of string bamboo joints for well logging instruments, which solves the problem of unfastened connection of instruments, inaccurate measurement, and due to the unified power supply in series, the power of individual instruments is exhausted or short circuit, open circuit, etc. Problems that affect the operation of the entire instrument string, thereby affecting logging operations

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