Mechanical and electrical connecting structure between drill collars of while-drilling instruments

Abstract

The invention discloses a mechanical and electrical connecting structure between drill collars of while-drilling instruments. By the mechanical and electrical connecting structure, shortcomings of high machining and operating difficulty and low operating efficiency of mechanical and electrical connection among drill collars of while-drilling instruments at present are overcome. The mechanical and electrical connecting structure is characterized in that a hollow first electronic framework is hermetically mounted in an inner hole of a first drill collar, and a hollow second electronic framework is hermetically mounted in an inner hole of a second drill collar; a first end of an inner barrel is positioned in an inner hole of the first electronic framework, and a second end of the inner barrel is positioned in an inner hole of the second electronic framework; the two ends of the inner barrel are respectively hermetically connected with the first electronic framework and the second electronic framework; the first electronic framework is connected with the second electronic framework in a threaded manner; the first electronic framework is electrically connected with the second electronic framework by a jumper wire. The mechanical and electrical connecting structure in an embodiment of the invention has the advantages that the drill collars of the while-drilling instruments are reliably mechanically and electrically connected with each other, and the mechanical and electrical connecting structure can be installed and maintained conveniently and quickly, and is low in difficulty and high in operating efficiency.

Description

technical field [0001] The invention relates to a mechanical and electrical connection technology, in particular to a mechanical and electrical connection structure between drill collars of an instrument while drilling. Background technique [0002] In the drilling process of oil exploration and development, measurement-while-drilling and logging-while-drilling instruments have begun to be widely used. Especially in offshore oil drilling, logging while drilling can partially replace wireline logging, thereby reducing operation time and cost. [0003] Sensors and circuit boards of measurement-while-drilling and logging-while-drilling instruments are generally installed on the outer wall of the drill collar or in the inner hole of the drill collar. When the two instruments are connected, the drill collars are connected by threads to realize the transmission of torque and drilling pressure. At the same time, the circuits between the two instruments also need to be connected to...

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to overcome the shortcomings of the mechanical and electrical connections between the drill collars of the current drilling tool, which are difficult to process and operate, and have low operating efficiency.

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