Platform for at least detecting straightness of centers of radial coils of three-dimensional array induction logging instruments

Abstract

The invention discloses a platform for at least detecting the straightness of the centers of radial coils of three-dimensional array induction logging instruments. The platform comprises a horizontal fixing bedplate, a plurality of supporting components, a secondary bedplate, a horizontal induction ring or a plurality of horizontal induction rings. The supporting components are detachably arranged on the fixing bedplate, so that probe nipples of the three-dimensional array induction logging instruments can be horizontally and axially rotatably supported on the upper side of the fixing bedplate; the secondary bedplate is transversely movably mounted on the fixing bedplate, a plurality of openings are formed in the secondary bedplate, and at least a part of the supporting components can upwardly penetrate the openings in an extending manner; the horizontal induction rings are arranged on the secondary bedplate and encircle the peripheries of the openings in the secondary bedplate. The platform has the advantages of simple structure, easiness in operation, convenience in maintenance and high universality.

Description

technical field [0001] The invention relates to the detection technology of the structural accuracy of an array induction logging tool, and more specifically relates to a detection platform for the structural accuracy of a three-dimensional array induction logging tool. Background technique [0002] Array induction logging is an important geophysical detection technology, which is based on the mutual induction principle of alternating current. Specifically, array induction logging uses the alternating current in the transmitting coil to induce electromotive force in the receiving coil. Since both the transmitting coil and the receiving coil are in the well to be detected, the alternating current of the transmitting coil must induce eddy currents in the formation around the wellbore. , and the eddy current affects the induced electromotive force of the receiving coil, so the induced electromotive force is related to the strength of the eddy current, that is, to the conductivi...

AI Technical Summary

Problems solved by technology

At present, the existing technologies in this field either use complex measuring or calibration instruments (such as optical measuring instruments) to carry out the above-mentioned detection through cumbersome operation steps, which not only has high cost, but also has low detection efficiency; or uses independent manual measuring instruments to waste time and effort. Perform various measurements and then perform complex calculations, not only the detection efficiency is low, but the detection accuracy is also unsatisfactory

[0016] In particular, to simultaneously measure the concentricity of all the axial coils on the sub-section mandrel of the three-dimensional array induction logging tool probe is a major problem in this field, and there is currently no suitable device to perform this test conveniently

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