Method and device for determining petroleum spatial distribution under configuration constraint of stratum source reservoir cap

Abstract

The invention provides a method and a device for determining petroleum spatial distribution under configuration constraints of a stratum source reservoir cap. The method comprises the step of: determining a petroleum and gas migration pathway of a region to be explored; determining a distribution range of petroleum reservoir according to the petroleum and gas migration pathway; determining a trap and a reservoir unit according to seismic data of the region to be explored; determining whether petroleum and gas are reserved in the trap, and acquiring a petroleum and gas distribution result; and adjusting the petroleum and gas distribution result by combining hydrocarbon detection according to the petroleum and gas migration pathway, the distribution range of petroleum reservoir and the reservoir unit. With the adoption of the method and the device provided by the embodiment of the invention, the purpose of accurately and effectively determining petroleum spatial distribution under the configuration constraints of the stratum source reservoir cap is achieved.

Description

technical field [0001] The invention relates to the technical field of oil and gas exploration, in particular to a method and a device for determining the spatial distribution of oil under the constraints of formation source-reservoir-cap configuration. Background technique [0002] With the continuous improvement of the degree of exploration, oil exploration has gradually turned to deep ancient strata. The so-called deep ancient strata generally refers to strata with a depth of more than 6000m. These formations are exploration strata series dominated by the Lower Paleozoic, and often have a source-reservoir-cap configuration combination in which high-quality source rocks are developed in the lower part, reservoirs are developed in the middle layer, and gypsum caprocks are developed in the upper part, which is also the most effective type of oil and gas. Formation mode. [0003] However, in the deep layer, there is still a great risk in this combination. Under the condition...

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Problems solved by technology

[0003] However, in the deep layer, there is still a great risk in this combination. Under the condition of high temperature and high pressure, the fluidity and sealing of the gypsum caprock may also lead to the destruction of the preservation conditions, especially the reservoir space developed in the ancient strata. Reservoir densification is often caused by factors such as deep burial and thermodiagenesis in the later stage, and oil reservoirs may also be damaged by high temperature alteration

[0004] How to accurately determine the spatial distribution of oil under the constraints of source-reservoir-cap configuration in ancient strata has always been a difficult problem in oil exploration, and no effective solution has been proposed for this problem

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