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A quick-connect joint for a downhole measurement-while-drilling instrument

A technology of quick connection and measurement while drilling, applied in the directions of measurement, drill pipe, drill pipe, etc., can solve problems such as difficulty and poor applicability, and achieve the effect of low cost, simple structure, simple and reliable connection means

Active Publication Date: 2022-02-01
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the difficulty and poor applicability of downhole measurement while drilling / logging tools integrated with MWD tools, downhole measurement while drilling / logging tools are usually developed as separate modules or drill collar joints

Method used

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  • A quick-connect joint for a downhole measurement-while-drilling instrument
  • A quick-connect joint for a downhole measurement-while-drilling instrument
  • A quick-connect joint for a downhole measurement-while-drilling instrument

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Experimental program
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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the embodiments and the accompanying drawings.

[0022] A quick-connect joint of a downhole measurement-while-drilling instrument of the present invention comprises a male joint assembly and a female joint assembly connected to each other;

[0023] Among them such as figure 1 with 2 As shown, the female joint assembly includes a central extension tube 1, a female drill collar nipple 2, an electrical adapter seat 4, an elastic circlip 6, an electrical adapter I7, and a lower centering seat 8; one end of the electrical adapter I7 is installed On the end face of the electrical adapter seat 4, the other end is connected to the circuit board of the measurement-while-drilling instrument through a high-temperature-resistant signal line; On the end, the lower centralizing seat 8 is suspended by a step provided in the female drill collar sub-joint 2, and fixed by the elastic circlip 6, so as to ensure th...

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Abstract

The invention discloses a quick-connect joint of a downhole measuring instrument while drilling, which comprises a male joint assembly and a female joint assembly connected to each other; Adapter I, lower centralizing seat; the male joint assembly includes electrical adapter II, male drill collar pup joint, extended center pipe, intermediate connecting joint, intermediate centralizing seat, threaded sleeve, lock ring, electrical connector, main body central pipe 1. The main electrical tube; the female drill collar nipple is connected with the male drill collar nipple, the electrical adapter II fits the electrical adapter I, and the lower centralizing seat fits on the extended center pipe. The invention realizes the fast, convenient and reliable connection means between the measurement-while-drilling tool and the measurement-while-drilling instrument, and can be automatically and quickly connected and sealed during the screw connection process of the measurement-while-drilling tool and the measurement-while-drilling instrument. The structure is simple, convenient, practical and low in cost.

Description

technical field [0001] The invention relates to a quick connection joint for interconnecting downhole measuring instruments while drilling, in particular to a quick connecting joint for downhole measuring instruments while drilling. Background technique [0002] Measurement-while-drilling / logging is an "underground revolution" in drilling technology. Measurement-while-drilling / logging parameters usually include engineering parameters and geological parameters. Among them, engineering parameters mainly include well deviation, azimuth, tool face, weight on bit, torque, speed, vibration, annular pressure, temperature, etc. Geological parameters mainly include such as Gamma rays, resistivity, density, azimuthal neutron density, neutron porosity, formation pore pressure, etc. One of the key points of the measurement-while-drilling technology is signal transmission. Downhole signal transmission while drilling can be divided into two categories: wired while-drilling transmission s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B17/02E21B17/042E21B47/12
CPCE21B17/02E21B17/042E21B47/12
Inventor 马天寿刘阳陈平黄万志葛亮
Owner SOUTHWEST PETROLEUM UNIV
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