Natural gas reservoir formation process quantitative recovery method

Abstract

The present invention provides a natural gas reservoir formation process quantitative recovery method comprising the following steps: collecting a raw gas parent material sample and carrying out dynamics simulation experiments; extrapolating to geological conditions on the basis of experimental results for conversion of experimental scale to geological age, and establishing the quantitative corresponding relationship of the geological age and reservoir formation events; and constructing a natural gas reservoir formation event complex chart to achieve quantitative recovery of marine facies deep natural gas reservoir formation process. According to the method, the conversion of the experimental scale to the geological age is achieved by extrapolating to the geological conditions on the basis of the experimental results, the quantitative corresponding relationship of the geological age and natural gas generation characteristics, reservoir stratum diagenetic evolution, entrapment development, structural adjustment activities and other reservoir formation events can be established, the natural gas reservoir formation event complex chart is constructed, and the quantitative recovery of the marine facies deep natural gas reservoir formation process can be achieved.

Description

technical field [0001] The invention relates to a method for quantitative recovery of natural gas accumulation process, which belongs to the technical field of geology-geochemistry in oil and gas exploration. Background technique [0002] With the development of the oil and gas industry, the proportion of natural gas in the energy structure is increasing. How to intensify exploration efforts, aim at the selected areas for exploration, and realize the breakthrough and development of natural gas exploration is an important technical proposition at present. my country's marine deep carbonate rocks are the main battlefield for natural gas exploration. Revealing the generation, migration and accumulation, accumulation and distribution of natural gas under deep geological conditions is the key to realizing breakthrough discoveries in marine deep carbonate rock natural gas exploration. Its core is the restoration of natural gas accumulation process. The establishment of recovery m...

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Problems solved by technology

In the past, the restoration of the natural gas accumulation process was mainly carried out from the positive and negative ideas: the forward modeling method, taking the structural evolution and sedimentary burial history as the main line, qualitatively described the sequence and matching relationship of the accumulation events, at the geological scale On the other hand, there is a lack of accurate quantitative description; the inversion method is mainly based on the geochemical characteristics of the natural gas in the current gas reservoir, and the previous geological process is reversed. Inaccurate

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