Method for measuring accumulation probability of oil-gas anticlinal reservoir
A technology of oil and gas accumulation and oil and gas reservoirs, which is applied in the direction of earthwork drilling and production, wellbore/well components, etc. It can solve the problem that qualitative analysis cannot satisfy oil and gas exploration, oil and gas geological conditions are complex, and oil and gas exploration in complex superimposed basins cannot be effectively guided. question
Inactive Publication Date: 2014-10-01
CHINA UNIV OF PETROLEUM (BEIJING)
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[0003] However, due to the complex oil and gas geological conditions in superimposed basins, and the oil and gas reservoirs have the characteristics of "multiple sets of source-reservoir-cap associations, multi-stage hydrocarbon generation and expulsion, multi-cycle accumulation, and multi-stage adjustment and transformation", the above single reservoir-controlling elements have certain advantages when applied. At the same time, qualitative analysis cannot meet the needs of current oil and gas exploration, and cannot effectively guide oil and gas exploration in complex superimposed basins
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[0066] In order to understand the present invention in depth, the embodiments of the present invention will be further described in detail below in conjunction with application examples.
[0067] The Tarim Basin is located in Northwest China, with an exploration area of about 56×10 4 km 2 , is the largest oil and gas basin in Northwest China. It has a complex internal structure, mainly composed of marine craton basins and Mesozoic and Cenozoic continental foreland basins. The Tarim Basin has a structural pattern of three uplifts and four depressions, which can be divided from north to south: Kuqa Depression, North Uplift, North Depression, Central Uplift, Southwest Depression, Tanan Uplift, and Southeast Depression. The results of China's new round of oil and gas resource evaluation show that the Tarim Basin has more than 10 billion tons of oil and gas resources, and the prospect of exploration is broad. The oil and gas discovered so far are distributed from the Cambrian ...
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The invention provides a method for measuring the accumulation probability of an oil-gas anticlinal reservoir. The method comprises the following steps that: four major function factors for controlling the formation and the distribution of the oil-gas anticlinal reservoir, including hydrocarbon source rocks (S), palaeohighs (M), phases (D) and regional cap rocks (C) are determined; through analyzing the oil-gas control features of each function factor, a single-function factor reservoir control geological model is built; the single-function factor reservoir control probability is determined through the geological model; through the superposition of all of the function factors in the same accumulation period, the single-period accumulation probability of the oil-gas anticlinal reservoir is determined; and through the superposition of the single-period accumulation probability of the oil-gas anticlinal reservoir in different accumulation periods, the accumulation probability of the oil-gas anticlinal reservoir is determined. The method provided by the invention has the advantages that the problem of quantitative evaluation in the existing oil-gas exploration is solved; the risk of the oil-gas exploration is greatly reduced; and the success rate of the oil-gas drilling exploration is improved.
Description
technical field [0001] The invention relates to the technical field of oil-gas basin analysis, in particular to an analysis technology for the accumulation probability of anticline oil and gas pools in complex superimposed basins. Background technique [0002] The existing anticline oil and gas reservoir technology mainly focuses on the analysis of a single reservoir-controlling element. For example, the first page of Huang Jizhong's "Marine Petroleum Geology" in 1998 only proposed a reservoir-controlling factor of source rocks; In 2008, on page 475 of "Acta Petroleum Sinica", He Dengfa only proposed a reservoir-controlling factor of the paleo-uplift and so on. At the same time, the existing anticline oil and gas reservoir technologies are mainly qualitative analysis. For example, Hu Chaoyuan only qualitatively described the reservoir-controlling effect of source rocks in "Acta Petroleum Sinica" in 1982, and believed that oil and gas fields are mainly distributed in oil-ge...
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IPC IPC(8): E21B49/00
Inventor 庞雄奇陈君青陈冬霞姜福杰庞宏
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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