Method and device for determination of distal lithologic trap

Abstract

The present invention discloses a method and a device for determination of a distal lithologic trap. The method comprises the steps of: developing post-stack seismic information data volume interpretation; selecting special sensitive parameters to perform target stratum lithology inversion and identify an initial lithologic trap; determining a fault lithologic trap controlled by oil source fracture as a preliminarily optimal lithologic trap, and performing overlapping of the fault lithologic trap and a structural map to obtain a fault lithologic trap overlapped with a known structure oil poolor a fault lithologic trap around the known structure oil pool; performing oil-water interface analysis of the fault lithologic trap overlapped with the known structure oil pool to identify further optimal lithologic trap; determining the oil and gas charging degree of faults around the known structure oil pool to identify a further optimal lithologic trap; and employing the Monte Carlo probability volumetric method to perform resource quantity calculation and hydrocarbon detection for the further optimal lithologic trap to determine a distal lithologic trap. The method and the device for determination of a distal lithologic trap can accurately determine the distal lithologic trap.

Description

technical field [0001] The invention relates to the technical field of geological research, in particular to a method and device for determining remote lithological traps. Background technique [0002] The evaluation and optimization methods of remote lithologic traps are directly related to the drilling success rate of remote lithologic traps, and are very important for improving the exploration benefits of oil and gas-bearing basins. [0003] At present, the identification, evaluation and optimization methods of lithological traps are mainly aimed at the lithologic traps in or near the source rocks. The oil source conditions of this kind of lithological traps are superior, and identification and description of traps are the focus of evaluation. For distant lithologic traps, the source rocks are not in direct contact with the reservoir. The source rock and the reservoir are separated by one or more sets of formations, and the traps are hundreds of meters or even thousands...

AI Technical Summary

Problems solved by technology

However, the transportation and accumulation of oil and gas in far-source lithologic traps often have strong randomness and uncertainty, so the evaluation difficulty and exploration risk of far-source lithologic traps are much greater than those of near-source lithologic traps

[0005] At present, there is no systematic and targeted method and technology for the evaluation and optimization of remote lithologic traps.

The traditional near-source lithologic trap evaluation method has deficiencies in the evaluation of oil and gas charging, and cannot meet the exploration needs of far-source lithologic traps

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