Clastic rock fault ancient closure three-dimensional numerical simulation recovery method and device

A technology of three-dimensional numerical value and recovery method, which is applied in the field of oil and gas exploration, can solve the problems of fault paleo-sealability evaluation method limited to two-dimensional geological analysis, unsuitable for exploration of new areas with few wells or no wells, etc., and achieves no need for experiment cost and effective use advanced effects

Pending Publication Date: 2022-07-01
CNOOC TIANJIN BRANCH +1
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Problems solved by technology

[0006] The object of the present invention is to provide a three-dimensional numerical simulation restoration method and device for clastic fault paleo-sealability, to solve the problem...

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  • Clastic rock fault ancient closure three-dimensional numerical simulation recovery method and device
  • Clastic rock fault ancient closure three-dimensional numerical simulation recovery method and device
  • Clastic rock fault ancient closure three-dimensional numerical simulation recovery method and device

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[0067] Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present invention will be more thoroughly understood, and will fully convey the scope of the present invention to those skilled in the art.

[0068] Since the traditional fault sealability evaluation method is limited to two-dimensional geological analysis, and is not applicable to new exploration areas with few or no wells, the present invention relies on geological modeling software, and uses the current sealability evaluation result of the fault as the restoration of the fault seal evolution history The inversion is carried out at the starting point of the fault, fo...

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Abstract

The invention relates to a clastic rock fault paleoclosure three-dimensional numerical simulation recovery method and a clastic rock fault paleoclosure three-dimensional numerical simulation recovery device. Manual intervention and iterative correction of numerical simulation of fault paleo-closure through steps of establishing virtual well, establishing current structure model, establishing current lithologic model, establishing current shale content model, numerical simulation of fault current closure, establishing paleo-structure model, establishing paleo-lithologic model, establishing paleo-shale content model, and numerical simulation of fault paleo-closure in sequence and step 2, based on geological modeling software, carrying out inversion by taking the current sealing evaluation result of the fault as a starting point for recovering the fault sealing evolution history. According to the method, the two-dimensional fault paleo-closure evaluation result can be expanded to three-dimensional space distribution, the method can be suitable for a well-free and few-well area, the experiment cost is not needed, and the use effect is more advanced and reliable.

Description

technical field [0001] The invention relates to the technical field of oil and gas exploration, in particular to a method and a device for restoring paleo-sealing three-dimensional numerical simulation of clastic rock faults. Background technique [0002] Fault oil and gas reservoirs are one of the most important types of oil and gas reservoirs in clastic rifted basins in eastern China. Its basic feature is that it relies on the lateral sealing of faults to block oil and gas accumulation. Therefore, evaluating the lateral sealing ability of faults is of great significance for the exploration of fault oil and gas reservoirs. [0003] The widely used evaluation methods for lateral sealing of faults can be divided into two categories: qualitative and quantitative: qualitative evaluation methods include Allan diagram method and Knipe diagram method, which are used to determine the lithological docking sealing characteristics of the upper and lower walls of the fault; quantitativ...

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Application Information

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IPC IPC(8): G01V1/28G01V1/30
CPCG01V1/28G01V1/282G01V1/306
Inventor 赵凯徐建永黄胜兵吴克强杨海长李楠朱文奇王升兰柯岭胡艳飞陈凯蓝倩李欣
Owner CNOOC TIANJIN BRANCH
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