Analysis Method and Device for Effective Reservoir in Petroleum Basin

Abstract

The invention provides an oil-gas possibility basin effective reservoir analysis method and device. The method comprises the steps that stratum data of a plurality of points in a research area are obtained, and an evolution profile of the reservoir porosity along with burial depth conditions is drawn with the reservoir type as constraint conditions; according to the evolution profile, the distribution of the minimum critical porosity and the maximum critical porosity on different burial depth conditions is recognized, and an envelope curve of hydrocarbon reservoir porosity critical distribution is drawn; homogenization processing is carried out on the reservoir on each burial depth condition according to the porosities, and an effective reservoir judgment and evaluation index chart is built; according to the chart, the effective reservoir evaluation index of each point in the target reservoir is determined; the target reservoir is analyzed according to the effective reservoir evaluation indexes. According to the oil-gas possibility basin effective reservoir analysis method and device, the problem that the reservoir effectiveness is difficult to evaluate quantitatively in the prior art is solved, and quantitative determining of the lower limit value of the oil-gas possibility basin reservoir effectiveness and quantitative evaluation of the oil-gas possibility basin reservoir effectiveness are achieved.

Description

technical field [0001] The invention relates to the technical field of petroleum exploration, in particular to an analysis method and device for effective reservoirs in oil-gas-bearing basins. Background technique [0002] In the exploration and development of oil and gas, the effectiveness of the reservoir refers to whether it is enriched with oil and gas. The effectiveness of the reservoir directly determines the oil and gas content of the target layer (that is, the target reservoir) in the study area, and then controls the oil and gas enrichment. The analysis of the main controlling factors of oil and gas in the target layer and the research on the effectiveness of oil and gas enrichment in reservoirs are directly related to the success rate of oil and gas exploration, so they have always been the key issues of people's research. [0003] However, the complex geological conditions lead to strong heterogeneity of the reservoir, and it is difficult to make an accurate quant...

AI Technical Summary

Problems solved by technology

[0007] The embodiment of the present invention provides an analysis method for effective reservoirs in oil-gas-bearing basins, which solves the technical problem that it is difficult to quantitatively evaluate the effectiveness of reservoirs in the prior art. The method includes:

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