Three-dimensional modeling system and method under sparse two-dimensional seismic survey line background

By collecting and fusing multi-source data, a modeling profile skeleton was constructed, and the structural framework was modeled in Petrel software. This solved the problem of three-dimensional modeling in the context of sparse two-dimensional seismic survey lines, realized the fusion of fault and stratigraphic data, and completed three-dimensional geological modeling, which is suitable for shale gas geological surveys and the initial stage of exploration.

CN122172281APending Publication Date: 2026-06-09HUBEI GEOLOGICAL SURVEY INST
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Patent Information

Application Number
CN202610293257.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-03-11
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

In the early stages of shale gas geological surveys and exploration, due to the sparse seismic survey lines, traditional three-dimensional seismic data interpretation cannot carry out three-dimensional modeling of fault and bedding data, and multi-type data fusion is difficult to achieve.

Method used

A three-dimensional modeling method based on sparse two-dimensional seismic survey lines was adopted. By collecting geological plan base maps, regional structural feature information, two-dimensional seismic survey line interpretation results, geological structural profile maps, surface geological boundary data and single-well layered data, a modeling profile skeleton was constructed. Fault and stratigraphic data were fused, and fault and three-dimensional stratigraphic models were established in Petrel software using the structural framework modeling method.

Benefits of technology

Against the backdrop of sparse two-dimensional seismic survey lines, the fusion of fault and stratigraphic data was successfully completed, enabling three-dimensional geological modeling. This has significant reference value, especially in the early stages of shale gas geological surveys and exploration.

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Abstract

The invention discloses a three-dimensional modeling system and method under a sparse two-dimensional seismic survey line background, and belongs to the technical field of three-dimensional modeling. The method comprises the steps that a geological plane base map, regional structure feature information, a two-dimensional seismic survey line interpretation result, a geological structure profile map, surface geological boundary data and single well layering data are collected and prepared; on the basis of existing seismic survey line distribution and regional structure trend, a geological structure profile is supplemented, and a high-density modeling profile skeleton is constructed; carrying out fusion based on fault line data in the section skeleton, and determining a spatial combination relation of faults; performing horizon data fusion based on seismic survey lines, geological structure profiles, surface geological boundaries and single well stratified data, and generating a plane structure map of each key interface; and finally, sequentially establishing a fault model and a three-dimensional stratum model in Petrel software by adopting a construction framework modeling method. According to the method, the problem that fine three-dimensional modeling cannot be carried out due to sparse seismic data in a geological survey stage and an initial exploration stage is effectively solved.
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