Instrument for measuring electrical parameters of mud-while-drilling in horizontal well

Abstract

The invention relates to an instrument for measuring the electrical parameters of mud-while-drilling in a horizontal well, which is applied to the fields of petroleum and geology, and used for measuring the electrical parameters of down-hole mud in the process of well drilling, especially used for measuring the electrical parameters of down-hole mud in the process of drilling a horizontal well and analyzing oil-gas-bearing information. The instrument mainly comprises a shell, an insulating layer, a measuring electrode, a crumb-removal grid, a mud inlet, a mud outlet, a signal acquisition and processing circuit, a signal transmission system and a ground calculation system, wherein the insulating layer is made of high-temperature-resistant insulating materials, and fixed on the inner wall of the shell; the crumb-removal grid is made of metal or high-temperature-resistant plastics or rubbers, and fixed on the inner wall of the shell between the electrode and mud inlet; the mud inlet is arranged at the lower part of the shell; the mud outlet is arranged at the upper part of the shell; and the signal input end is connected with the measuring electrode, and the signal output end is connected with the signal transmission system. According to the invention, the changes of electrical parameters of mud can be continuously monitored in the whole process of well drilling, and the oil and gas information of the current formation can be found.

Description

technical field [0001] The invention relates to a horizontal well drilling mud electrical parameter measuring instrument used for measuring downhole mud electrical parameters during drilling in the petroleum and geological fields, especially for measuring downhole mud electrical parameters and analyzing oil and gas information during horizontal well drilling . Background technique [0002] In the prior art, the method of measuring mud electrical parameters during the drilling process and obtaining oil and gas information from the electrical parameters can only collect the original information at the surface mud outlet. Due to the mud circulation time delay, this information reflects that the drilling was done some time ago. The mud information at the layer is not the mud information that is drilling the formation, and the timeliness is insufficient. It is hoped that the measuring instrument that can measure the mud electrical parameters in time to obtain oil and gas informa...

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Problems solved by technology

[0002] In the prior art, the method of measuring mud electrical parameters during the drilling process and obtaining oil and gas information from the electrical parameters can only collect the original information at the surface mud outlet. Due to the mud circulation time delay, this information reflects that the drilling was done some time ago. The mud information at the layer is not the mud information that is drilling the formation, and the timeliness is not enough

It is hoped that the measuring instrument for timely measuring mud electrical parameters in wells to obtain oil and gas information has not yet appeared in this industry

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