Time-depth conversion method and equipment for a two-dimensional geological model

Abstract

The present invention provides a time-depth conversion method and equipment for a two-dimensional geological model. The method includes: obtaining time-domain horizon data and layer velocity data obtained from geological interpretation; A two-dimensional time-domain geological model; performing vertical conversion on the two-dimensional time-domain geological model to obtain an initial depth model; performing imaging ray conversion on the initial depth model to obtain a two-dimensional depth-domain geological model. The method and equipment of the present invention solve the defect that the time-depth conversion technology of geological models in the prior art cannot be applied to geological models with relatively complex structures, and realize the rapid conversion of two-dimensional time-domain geological models into two-dimensional depth domains The geological model is used for subsequent numerical forward modeling of the geological model, laying a solid foundation for seismic exploration in complex areas.

Description

technical field [0001] The present invention relates to the field of petroleum and natural gas exploration and development, in particular to the conversion technology of geological models, specifically a method and equipment for time-depth conversion of two-dimensional geological models. Background technique [0002] Under the background of increasingly complex exploration conditions, the exploration of oil and gas reservoirs with complex structures has become one of the difficulties in reservoir prediction. Geophysical numerical forward modeling is based on the geological model in the depth domain. When establishing a geological model, modeling needs to be carried out based on the horizon data provided by geological interpreters. These horizon data are often in the time domain, so the geological model established based on these data is also in the time domain. After establishing the geological model in the time domain, it is necessary to perform time-depth conversion to ob...

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Problems solved by technology

[0005] In order to overcome the above-mentioned problems in the prior art, the present invention provides a time-depth conversion method and equipment for a two-dimensional geological model, which solves the problem that the geological model time-depth conversion technology in the prior art cannot be applied to geological structures with relatively complex structures. The defects in the model enable the rapid conversion of the two-dimensional time-domain geological model into a two-dimensional depth-domain geological model, which is used for subsequent numerical forward modeling of the geological model and lays a solid foundation for seismic exploration in complex areas

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