Inserting-connecting torque transmission and electricity transmission split-connecting power drill rod

Abstract

The invention discloses an inserting-connecting torque transmission and electricity transmission split-connecting power drill rod which comprises drill rod bodies, male connectors and female connectors, wherein the male connectors and the female connectors are arranged at the two ends of the drill rod bodies. The female connectors are of a split structure, in other words, the single female connectors of the independent structure and outer tables of the drill rod bodies form circumferential rotation and axial limiting step fit through inner steps. Spline bodies in axial inserting-connecting fit are arranged at the two ends of a drill bit connector. Wire holes are formed in the oppositely-combined upper edges of the parts, at the male connectors and the female connectors, of spline body pairs. Cables and cable insulating layers penetrate the wire holes. Female contact seats and male contact seats are connected to cable ends at end openings of the spline bodies and form inserting-connecting fit, and insulating supporting seats are arranged outside the female contact seats and the male contact seats. By means of the drill rod, safety and sealing reliability of connector connection in drilling liquid are improved, mutual interference is reduced, and signal transmission is more stable. The connector electricity conductivity still cannot be reduced after the connector is repeatedly used, and meanwhile torque transmission can be conducted when the drill rod works.

Description

technical field [0001] The invention relates to the field of oil and gas drilling pipes (rods), in particular to a drill pipe used for power and signal transmission. Background technique [0002] With the expansion and development of offshore oil and gas resources, the increasing demand for exploration and development of onshore complex oil and gas fields and hard-to-produce reserves, wells with complex structures such as horizontal wells, extended-reach wells, and multilateral wells, as well as wells with special techniques such as underbalanced drilling and gas drilling, etc. The number and proportion of them are constantly increasing. Modern rotary steerable drilling technology, geosteering drilling technology such as logging while drilling and seismic technology while drilling, and downhole diagnosis and control technology of drilling dynamic parameters are also developing continuously; In the first stage, it is required to collect, transmit, process, feed back and appl...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art, to solve the safety of the joint connection and the reliability of the seal in the high-pressure drilling fluid with corrosive and abrasive effects, and to reduce mutual interference and reduce the electrical conductivity of the joint after repeated use To solve such problems, a power drill pipe with plug-in torsion transmission and electric transmission split connection is provided

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