Method and device for generating oil and gas migration paths in a three-dimensional vertically bisecting mesh body
A vertical bisector, oil and gas migration technology, applied in the field of oil and gas exploration, can solve the problem of no oil and gas migration path generation method, etc.
Active Publication Date: 2018-11-16
PETROCHINA CO LTD
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[0004] The embodiment of the present invention provides a method for generating oil and gas migration paths in a three-dimensional vertically bisecting grid body to solve the technical problem that there is no method for generating oil and gas migration paths in a three-dimensional PEBI grid body in the prior art
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[0048] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with the embodiments and accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.
[0049] In an embodiment of the present invention, a method for generating oil and gas migration paths in a three-dimensional vertically bisected grid body is provided, such as figure 1 As shown, the method includes:
[0050] Step 101: Establish a three-dimensional PEBI grid body, the plane formed by the X-axis and the Y-axis direction in the three-dimensional PEBI grid body is a two-dimensional PEBI grid, and the layer-wise grid is in the Z-axis direction;
[0051] Step 102: Using the finite volume method, simulate the outflow and inflow of oil and gas on each surface of all grid cells in the ...
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An embodiment of the invention provides a method and a device for generating an oil and gas migration pathway in a three-dimensional perpendicular bisector grid body. The method comprises the steps of establishing three-dimensional PEBI (perpendicular bisector) grid body; adopting a finite volume method, simulating the outflow volume and the inflow volume of oil and gas on each face of all grid cells in the three-dimensional PEBI grid body; for each hydrocarbon generation grid cell in the three-dimensional PEBI grid body, determining a gravity center node of the hydrocarbon generation grid cell and a face with the maximal outflow volume of the oil and gas on the hydrocarbon generation grid cell, and the direction corresponding to the face with the maximal outflow volume of the oil and gas is the direction of a pathway of the hydrocarbon generation grid cell; taking the gravity center node of the hydrocarbon generation grid cell as a starting point, connecting gravity center of the current the hydrocarbon generation grid cell and the gravity center node of the next hydrocarbon generation grid cell according to the pathway direction of the current hydrocarbon generation grid cell, determining a connection line formed by successively connecting the gravity center nodes of all hydrocarbon generation grid cell to be an oil and gas migration pathway. By means of the scheme, the generation of the oil and gas migration pathway in the three-dimensional PEBI grid body is realized.
Description
technical field [0001] The invention relates to the technical field of oil and gas exploration, in particular to a method and device for generating oil and gas migration paths in a three-dimensional vertically bisected grid body. Background technique [0002] Oil and gas migration path tracking is an important technology for the analysis and simulation of oil and gas systems and basins, the core technology for three-dimensional dynamic display of oil and gas migration process, and the most critical technology for directly predicting the distribution of oil and gas reservoirs and quantitatively simulating the amount of oil and gas accumulation in traps . The application of this technology is of great significance to realize the potential of oil resources and find favorable exploration and development areas. [0003] At present, oil and gas migration path tracking technologies include two types: 2D technology and 3D technology. Among them, 2D technology is mainly used for cr...
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IPC IPC(8): G06F17/50G06Q10/08G06Q50/02
CPCG06F30/00G06Q10/08355G06Q50/02
Inventor 郭秋麟陈宁生谢红兵吴晓智胡俊文高日丽
Owner PETROCHINA CO LTD