Three-dimensional charging and migration analysis method of oil and gas in multi-layer systems in complex fault zones
A technology of oil and gas migration and analysis method, which is applied in the exploration field of petroleum exploration and development industry, can solve problems such as lack and uselessness, and achieve good results
Active Publication Date: 2022-04-15
CHINA NAT OFFSHORE OIL CORP +1
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Problems solved by technology
This method is suitable for in-source / out-source oil and gas migration simulation, and is mainly used for simple directional oil and gas charging and migration analysis, but not for multi-charging points in complex fault zones and multi-layer oil and gas migration analysis
[0008] In addition, exploration has confirmed that the complex fault zone has the characteristics of multi-layer system inside source and outside source, and its oil and gas migration should be three-dimensional. The above three methods are single-layer oil and gas migration simulation analysis, and there is no Three-dimensional oil and gas migration simulation analysis method to guide three-dimensional exploration of complex fault zones
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[0030] Aiming at the defects of previous explanation methods, the present invention is based on the understanding of the whole process of three-dimensional migration of oil and gas in active fault zones, and for the first time in the analysis of lateral migration of in-source accumulation systems, the reservoirs under the regional cap rocks and unconformities are spliced into For the in-source transport system, the "hydrocarbon migration simulation method based on source rocks" is used to analyze the oil and gas migration and accumulation in the source and its potential transit warehouse; in the vertical migration of complex fault zones, to find vertical dominant migration channels In the shallow "oil and gas springs" as the core, innovatively establish the identification standards of oil and gas springs through regional statistics, calculate the identification parameters of oil and gas springs in complex fault models through structural modeling, and identify oil and gas sprin...
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The method for analyzing oil and gas three-dimensional charging and migration of multi-layer systems in complex fault zones of the present invention includes: the first step, the division of oil and gas migration paths in complex fault zones; the second step, analysis of oil and gas migration within the source; the third step, oil and gas in complex fault zones Identification of springs; the fourth step, analysis of fault interception capacity; fifth step, multi-layer three-dimensional oil and gas migration analysis outside the source, conduct oil and gas migration simulation based on oil and gas springs for multiple potential transport layers outside the source, and predict oil and gas distribution, to guide the deployment of exploration wells; to realize the prediction of three-dimensional charging, migration and accumulation of multi-layer oil and gas in complex fault zones, with a high prediction success rate, to realize fine exploration, and to promote the increase of reserves and production in oilfields.
Description
technical field [0001] The invention relates to the field of exploration technology in the petroleum exploration and development industry, in particular to a method for analyzing the three-dimensional charging and migration of multi-layer oil and gas in complex fault zones. Background technique [0002] Since the 1990s, a number of large and medium-sized oil fields have been discovered successively in the shallow layers of the uplift area under the guidance of late-stage accumulation theory. With the increase of the degree of shallow exploration, the exploration of the integral draped anticlines of the oil and gas springs in the uplift area has been exhausted. At the same time, the exploration degree of the slope belt and the complex fault zone in the sag area is relatively low, and there are many shallow traps in it. The oil source has become the most realistic area for exploration. [0003] The existing oil and gas migration / accumulation models of complex fault zones in t...
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IPC IPC(8): G01V9/00G01N33/24
CPCG01V9/00G01N33/24
Inventor 彭靖淞牛成民王德英于海波孙哲赵弟江吴庆勋张捷陈心路江尚昆
Owner CHINA NAT OFFSHORE OIL CORP