Circuit used for petroleum underground three-dimensional acoustic wave signal receiving sensor array

Abstract

The invention discloses a circuit used for a petroleum underground three-dimensional acoustic wave signal receiving sensor array. The circuit consists of a plurality of sealed electronic units and is positioned inside a receiving acoustic system; the plurality of sealed electronic units are connected with a main control electronic unit through a serial high-speed transmission bus and are connected with an annular array of a receiving sensor; and the sealed electronic unit specifically comprises a plurality of signal channels, a data buffer memory, a data acquisition controller and a data transmission controller. Therefore, the circuit used for the petroleum underground three-dimensional acoustic signal receiving sensor array realizes high-speed, efficient and reliable data communication between the plurality of sealed electronic units and the main control electronic unit positioned in a main electronic cabin, and solves the problems of realizing the connection between a three-dimensional acoustic logging receiving sensor array and an electronic system and realizing a multi-channel parallel signal processing electronic system under the conditions of underground high temperature andnarrow space.

Description

technical field [0001] The invention relates to the field of applied geophysics, in particular to a circuit for receiving sensor arrays for three-dimensional acoustic wave signals in oil wells. Background technique [0002] At present, the mainstream multipole acoustic logging technology in the existing technology only has limited azimuth and radial detection capabilities, while the phased array acoustic wave emission and arrayed receiving sensors (composed of several annular arrays) with arbitrary directivity are used. ) is the key technology to realize the three-dimensional detection capability. At this time, it is required to improve the 8-group array of 4 transducers with 90-degree orthogonal distribution widely used in the existing multipole receiving sound system to the 8-transducer 12-group (or even more) array with 45-degree distribution. In this case, the requirements for the downhole signal receiving and processing electronic system will change as follows: [000...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problem of realizing the connection between the three-dimensional acoustic logging receiving sensor array and the electronic system and realizing the multi-channel parallel signal processing electronic system under the condition of high temperature and narrow space in the underground.

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