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Complex carbonate oil and gas reservoir accumulation mode evaluation method

A carbonate rock and model evaluation technology, applied in the field of carbonate rock oil and gas exploration and development, can solve problems such as failure to consider oil and gas accumulation characteristics, and achieve the effect of increasing oil and gas geological reserves and widening the occurrence area

Inactive Publication Date: 2016-05-25
CHINA NAT PETROLEUM CORP CHUANQING DRILLING ENG CO LTD
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Problems solved by technology

The above cited patents mainly evaluate and study reservoirs from the perspective of accumulation dynamics. Based on the hydrocarbon generation dynamics of source rocks (high pressure hydrocarbon supply), fractures are oil and gas migration channels. The distribution law is mainly based on the concept of oil and gas system to study oil and gas reservoirs, without considering the characteristics of oil and gas accumulation

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  • Complex carbonate oil and gas reservoir accumulation mode evaluation method

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Embodiment Construction

[0022] Based on the anatomy and exploration practice (EPCC) of a large number of oil and gas reservoirs in the Ordovician Yingshan Formation and Lianglitage Formation in Tazhong, the present invention integrates geological characteristics such as structures, faults, strata, and sedimentary reservoirs, and establishes Tazhong Ordovician Three oil and gas accumulation models of pottery-series carbonate rocks: faulted anticline combination accumulation model, slope deep karst accumulation model, and facies-controlled accumulation model under slope break belt. The accumulation model of faulted anticline combination uses the concept of accumulation system, emphasizing the communication and adjustment effect of faults on oil and gas, taking the Upper Ordovician Lianglitage Formation and Lower Ordovician Yingshan Formation as an organic accumulation system to study oil and gas accumulation, The accumulation model of migration and adjustment; the deep karst accumulation model of the sl...

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Abstract

The invention discloses a complex carbonate oil and gas reservoir mode evaluation method. According to the method, on the basis of study and exploitation on the oil and gas reservoir, in combination with construction, fracture, stratum and sedimentary reservoir geological characteristics, three Ordovician carbonate oil and gas accumulation modes are established, including a broken-back inclined combination accumulation mode, a slope deep karst accumulation mode and a slope break belt phase control accumulation mode. Through the method, understanding about Ordovician carbonate oil and gas accumulation is further supplemented and deepened, through exploration and practice verification, Ordovician carbonate oil and gas occurrence areas are expanded, Ordovician carbonate oil and gas geological reserves are greatly improved, and the method has great importance on reserve and production increase of the oil and gas.

Description

technical field [0001] The invention relates to the technical field of carbonate rock oil and gas exploration and development, in particular to a method for evaluating accumulation patterns of complex carbonate rock oil and gas pools. Background technique [0002] The exploration of Ordovician carbonate oil and gas reservoirs in the Tazhong area has successively experienced ancient buried hill karst reservoir oil and gas reservoirs (before 1990), structural trap oil and gas reservoirs (1990-2002), and reef-shoal lithologic trap oil and gas reservoirs ( 2003-2012) The transformation of exploration ideas in several stages, due to the heterogeneity of Ordovician carbonate reservoirs and the complexity of oil and gas accumulation, the exploration progress of Ordovician carbonate reservoirs in Tazhong encountered a bottleneck . [0003] Before the research and discovery, oil and gas in the Lianglitage Formation of the Upper Ordovician were mainly distributed in Zone I and Zone I...

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Application Information

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IPC IPC(8): G01V9/00
CPCG01V9/00
Inventor 周一博欧阳诚王安平李柱正钟金银王家辉邓明杰刘德伦车国杰
Owner CHINA NAT PETROLEUM CORP CHUANQING DRILLING ENG CO LTD
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