Calibration device of multidimensional nuclear magnetic resonance logging instrument

Abstract

The invention provides a calibration device of a multidimensional nuclear magnetic resonance logging instrument. The device comprises a calibration barrel assembly, an external container used for containing multiple calibration solutions and a delivery pump. The calibration barrel assembly comprises a calibration barrel and a calibration barrel fixing mechanism. A first hollow barrel of the calibration barrel is coaxially sleeved with a second hollow barrel, the part between the left edges of the two hollow barrels extends in the direction perpendicular to the central axis to form a left end face, the part between the right edges of the two hollow barrels extends in the direction perpendicular to the central axis to form a right end face, and the first hollow barrel, the second hollow barrel, the left end face and the right end face form a cavity. The interior of the cavity is divided into a plurality of fan-shaped containing cavities in the circumferential direction, and each containing cavity is filled with one calibration solution. A probe of the multidimensional nuclear magnetic resonance logging instrument to be calibrated is coaxially arranged in the center of the first hollow barrel. The calibration barrel fixing mechanism is fixedly connected with the calibration barrel. The delivery pump is used for pumping the calibration solutions into the corresponding containing cavities from the external container.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of nuclear magnetic resonance logging, in particular to a calibration device for a multi-dimensional nuclear magnetic resonance logging tool. Background technique [0002] Nuclear magnetic resonance logging technology is a technology that uses the principle of nuclear magnetic resonance to detect the formation around the borehole. It is detected by multi-dimensional nuclear magnetic resonance logging tool. According to different measurement parameters, multidimensional nuclear magnetic resonance logging tools can be divided into one-dimensional nuclear magnetic resonance logging tools and multidimensional nuclear magnetic resonance logging tools. With the development of nuclear magnetic resonance logging technology, multidimensional nuclear magnetic resonance logging tools have been widely used. The multi-dimensional nuclear magnetic resonance logging tool includes two-dimensional nucl...

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Problems solved by technology

[0004] Since the calibration device of the existing multidimensional nuclear magnetic resonance logging tool stores the same calibration solution in the circumferential direction of 360 degrees, the space dimension is limited, and only after each calibration solution is calibrated, the type of calibration solution in the calibration cylinder is replaced, and then Calibration of another calibration solution is performed, so the calibration efficiency of the multidimensional NMR logging tool is greatly reduced

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