Cable connecting device used between electric pulse-mechanical composite rock breaking drill bit and drilling tool
A cable connection and electric pulse technology, applied in drill pipe, drill pipe, drilling equipment, etc., can solve the problems of doubtful use effect and rotation while drilling, etc., to improve drilling efficiency, prevent leakage accidents, and reduce torsional deformation. Effect
Active Publication Date: 2021-10-29
SOUTHWEST PETROLEUM UNIV
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Problems solved by technology
The Chinese patent "A Telescoping Connector for Instruments While Drilling" with the application number 201510490609.6 provides a technical solution that can achieve similar effects, but the technical solution uses a slip ring, which may be disconnected due to friction in actual use. The problem of drill rotation, the actual use effect is doubtful
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[0039] The present invention will be further described below in conjunction with the embodiments. It should be noted that in this article, words such as "upper" and "lower" are only used to facilitate the description of the accompanying drawings, and do not limit the direction in actual use, and are not necessarily No such actual relationship or order between these entities or operations is required or implied. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or device.
[0040] Such as Figure 1-9 As shown, a cable connection device for electric pulse-mechanical composite rock breaking drill bit and drilling tool is used based on the applicant's previous...
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The invention provides a cable connecting device used between an electric pulse-mechanical composite rock breaking drill bit and a drilling tool. The cable connecting device comprises a lower joint connected with a composite drill bit, an upper joint is connected to the lower joint, reaming steps are arranged on the inner sides of the contact surfaces of the upper joint and the lower joint to serve as mounting grooves, a connecting device is mounted in the mounting groove, the connecting device is used for connecting an upper while-drilling cable and a lower drill bit cable, and the drill bit cable is connected to the composite drill bit; a rotating mechanism is arranged on the connecting device, and synchronous rotation with the while-drilling cable and static with the drill bit cable are achieved through the rotating mechanism; and a flow channel which is opened and closed intermittently is arranged in the connecting device, and the flow channel of the upper joint is in communication with the composite drill bit. The connecting device is designed, so that the cable does not rotate while drilling in the drilling process, the stable state is kept, and the use safety is improved.
Description
technical field [0001] The invention relates to the technical field of oil and gas field development, in particular to a cable connection device between an electric pulse-mechanical composite rock-breaking drill bit and a drilling tool. Background technique [0002] In recent years, due to my country's increasing dependence on foreign energy, national energy security is extremely vulnerable to threats, so it is necessary to increase oil and gas exploitation in my country. In order to achieve the goal of building a solid foundation for my country's energy security, the exploitation of deep oil and gas is particularly important. The use of high-voltage electric pulses to break rocks has the advantages of high rock breaking efficiency and low drilling cost for deep and ultra-deep well drilling. It is a rock breaking method with great development potential and close to industrialization so far. Electric pulse rock breaking is a new high-efficiency rock-breaking drilling technol...
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IPC IPC(8): E21B17/02
CPCE21B17/02E21B17/023E21B17/028
Inventor 刘伟吉胡海祝效华罗云旭
Owner SOUTHWEST PETROLEUM UNIV