Rotary sliding contact type center rod conductive device

Abstract

The invention discloses a rotary sliding contact type center rod conductive device which comprises a first conductive mechanism, a second conductive mechanism, a first center rod and a second center rod, the first center rod is detachably connected with the second center rod, and a mounting groove A corresponding to the first conductive mechanism is formed in the first center rod, a mounting groove B corresponding to the second conductive mechanism is formed in the second center rod, and when the first center rod and the second center rod are connected, the first conductive mechanism and the second conductive mechanism are in compression fit to form a contact connection structure. Contact with external drilling fluid and other fluids can be avoided, and high insulativity is guaranteed; a stable information and power transmission channel between the ground and the well bottom is established; the problem that cable butt joint is immature is solved, the limitation that only weak current signal transmission can be achieved when a traditional drill rod is powered on is broken through, and therefore a sound electric power and signal transmission function is achieved.

Description

technical field [0001] The invention relates to the technical field of oil exploitation equipment, in particular to a rotating sliding contact type central rod conducting device. Background technique [0002] With the rapid development of the global economy, the demand for oil has increased significantly, and the precision and speed of drilling have become the inevitable requirements of drilling and oil production technology. As for drilling technology, the more advanced ones are logging while drilling (LWD) and measurement while drilling (MWD). With the advancement of drilling technology, more and more detectors, instruments, and sensors are used in downhole drilling technology. These devices need to consume a lot of power when they work. At present, electromagnetic waves, sound waves and Mud pulse method, but the signal transmission of electromagnetic waves attenuates very fast, and the transmission of sound waves is susceptible to interference. The transmission rate of mu...

AI Technical Summary

Problems solved by technology

However, there is no relevant research on the design of power and signal transmission in the center rod of the coring machine. The diameter of the center rod is usually less than 35mm, which is different from the drill rod or drill string that needs to be rotated during work. pulling action, but its extremely small size constraints make power delivery in it extremely difficult

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