Intelligent drilling rod for petroleum and natural gas extraction and manufacture method thereof

Abstract

The invention discloses an intelligent drilling rod for petroleum and natural gas extraction and a manufacture method thereof. Both ends of the drilling rod are connected with an inner threaded joint and an outer threaded joint and are welded for carrying out heat treatment, grooves are formed on the outer wall of an inner lining pipe of a pipe body in a pulling way, high-temperature resistance metal adhesives are coated on the outer wall of the inner lining pipe of the pipe body, cables are laid in the grooves, the inner lining pipe of the pipe body and the cables are pressed on the inner wall of the drilling rod body by adopting a metal pipe expansion compounding method, an inner threaded joint lining sleeve and an outer threaded joint inner lining positioning sleeve are respectively in interference arrangement inside the inner threaded joint and the outer threaded joint after being coated with the high-temperature resistance metal adhesives on the outer contact surfaces, a conductive ring positioning protective sleeve and a conductive ring are respectively arranged in an inner cavity of the inner threaded joint and at the lengthening section of the outer threaded joint, both ends of the cables are connected with the conductive ring, and a high-temperature sealing ring is arranged on the end surface of the outer threaded joint. The drilling rod realizes the ground and underground electric power and the information transmission, realizes the logging while drilling and the closed loop control, belongs to a revolution on the well drilling history, and simultaneously improves the corrosion resistance capability of the drilling rod. The manufacture method is simple, can be easily implemented, has high work efficiency, and meets the requirements of the intelligent drilling rod.

Description

technical field [0001] The invention relates to an intelligent drill pipe used for oil and natural gas exploitation and a manufacturing method thereof. Background technique [0002] With the expansion and deepening of oil and gas extraction, the world's oil and gas extraction is currently facing two development trends: [0003] First, drilling is developing in the direction of automation and intelligence. In the process of oil and gas extraction, it is necessary to transmit all kinds of information collected while drilling downhole to the ground in real time and accurately. The intelligent analysis system will send new control commands to the downhole according to the collected information, so as to realize intelligent drilling. This requires endowing the drill pipe with the functions of power and signal transmission, and puts forward the requirement of developing intelligent drill pipe. [0004] Second, the development of the world's oil and gas fields has expanded to are...

AI Technical Summary

Problems solved by technology

[0005] In the design of intelligent drill pipe currently being developed and researched, there are two ways of signal transmission: one is wireless transmission, which is limited by transmission medium, transmission capacity, data transmission asynchrony and inability to transmit power, and has not been really developed so far. Success; the second is wired transmission, using the cables set in the tube body to complete the transmission of power and information

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