Method and device for calculating gravity gradient tensor in two-dimensional body well, equipment and medium

Abstract

The invention discloses a method and a device for calculating the gravity gradient tensor in a two-dimensional body well, equipment and a medium. The method includes: constructing a rectangular model internally containing a target area, adopting a one-dimensional discrete convolution method to calculate the gravity gradient tensor in the well generated by each column of small rectangular units at an observation point in the well, and accumulating the gravity gradient tensors in the well generated by each column of small rectangular units at the observation point in the well to obtain the in-well gravity gradient tensor generated by the whole rectangular model at the observation point in the well. The invention provides a special gravity gradient tensor weighting coefficient calculation method, and unification of calculation precision and calculation efficiency of the gravity gradient tensor in a two-dimensional body well is realized by combining and adopting a one-dimensional discrete convolution rapid calculation method.

Description

technical field [0001] The invention belongs to the technical field of two-dimensional gravity gradient tensor calculation, and in particular relates to a calculation method, device, equipment and medium of gravity gradient tensor in two-dimensional wells. Background technique [0002] Compared with the ground and air gravity, the gravity in the well is closer to the source body, so it can better reflect the location of the source body and other information. The gravity gradient in the well is more sensitive to the density and shape changes of the source body. It is an important observation method in the field of solid mineral and oil and gas resource exploration and environmental monitoring. With the development of gravity observation equipment in the well, the gravity measurement in the well has gradually become an important exploration and monitoring method. method. In order to meet the requirements of joint surface-well gravity gradient tensor data inversion, efficient ...

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Problems solved by technology

[0006] The present invention aims at the problem of low calculation accuracy of the current gravity gradient tensor calculation method in the existing two-dimensional body well, and at the same time considers meeting the requirements for calculation efficiency of joint surface-well gravity data inversion imaging, human-computer interaction modeling and interpretation, the present invention The calculation method, device, equipment and medium of the gravity gradient tensor in the second-dimensional well are proposed, which can be adapted to the fast and high-precision calculation of the gravity gradient tensor in the second-dimensional well with any cross-sectional shape and arbitrary density distribution

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