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Fast connecting joint of downhole measuring while-drilling instrument

A fast connection and measurement-while-drilling technology, which is applied in the direction of measurement, drill pipe, drill pipe, etc., can solve the problems of poor applicability and difficulty

Active Publication Date: 2020-10-20
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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  • Fast connecting joint of downhole measuring while-drilling instrument
  • Fast connecting joint of downhole measuring while-drilling instrument
  • Fast connecting joint of downhole measuring while-drilling instrument

Examples

Experimental program
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Effect test

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 and 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 tha...

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Abstract

The invention discloses a fast connecting joint of a downhole measuring while-drilling instrument. The fast connecting joint comprises a male joint assembly and a female joint assembly which are mutually connected; the female joint assembly comprises a central extended pipe, a female drill collar nipple, an electrical appliance converter base, an electrical appliance converter I and a lower centralizing seat; the male joint assembly comprises an electrical appliance converter II, a male drill collar nipple, an extended central pipe, a middle connecting joint, a middle centralizing seat, a threaded sleeve, a lock ring, an electrical appliance connector, a main body central pipe and a main body electrical appliance pipe; and the female drill collar nipple and the male drill collar nipple areconnected together, the electrical appliance converter II sleeves the electrical appliance converter I, and the lower centralizing seat sleeves the extended central pipe. Through the fast connectingjoint, the means of fast, simple, convenient and reliable connecting between a measuring while-drilling tool and the measuring while-drilling instrument is realized, automatic and fast connecting andsealing in the screw connection process of the measuring while-drilling measuring tool and the measuring while-drilling instrument can be realized, and the fast connecting joint is simple, convenientand practical in structure, 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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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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