Forward modeling based 3D stratum corner mesh volume element modeling method

A grid voxel, 3D stratigraphic technology, applied in 3D modeling, image data processing, instruments, etc., can solve problems such as distortion of facies simulation results and 3D geological grid distortion, and achieve the effect of eliminating distortion.

Active Publication Date: 2018-12-18
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

[0002] Currently popular oil and gas 3D geological modeling software (Petrel, Direct, etc.) at home and abroad, in the process of PillarGridding gridding for structural modeling, faults are forcibly bound to the planar quadrilateral grid, that is, the grid points near the fault line are moved to On the fault line, make some of the grid edges bec...

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  • Forward modeling based 3D stratum corner mesh volume element modeling method
  • Forward modeling based 3D stratum corner mesh volume element modeling method
  • Forward modeling based 3D stratum corner mesh volume element modeling method

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[0026] In order to make the above and other objects, features and advantages of the present invention more comprehensible, the preferred embodiments are listed below and shown in the accompanying drawings in detail as follows.

[0027] Such as figure 1 as shown, figure 1 It is a flowchart of the three-dimensional formation corner grid voxel modeling method based on forward modeling of the present invention.

[0028] Step 101, data loading and visualization: Import the original data required for 3D geological modeling (layer scattered point data, fault scattered point data, work area boundary data) into the modeling software system to realize the spatial 3D visual display of various geological objects .

[0029] Step 102, restoration of paleo-sedimentary strata: Firstly, the existence of faults is not considered, but the stratum is restored to the paleo-sedimentary state in the period when no tectonic activity occurred, that is, the stratum interface correction method is used...

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Abstract

The invention provides a 3D stratum corner mesh volume element modeling method based on forward simulation, which comprises the following steps: step 1, loading and visualizing the original data required for 3D geological modeling; 2, restoring the stratum to the paleo-sedimentary state in the period when the tectonic activity does not occur through the correction method of the stratum interface;3, adopting a corner mesh data model to carry out mesh generation on that stratum; 4, performing interpolation fitting on the fault plane; 5, using the acquired fault information of tectonic movementperiod to cut and adjust the corner grid volume element model of paleo-sedimentary period. The forward modeling method can eliminate the distortion of geological mesh in modeling process, by preserving the volume and distance information of the simulation object, the geological grid can be faithful to the complex strata, accurate geological statistics can be achieved, physical parameters and three-dimensional geological grid can be effectively fused, and the model is more in line with the geological law.

Description

technical field [0001] The invention relates to the technical field of three-dimensional structure modeling of oil and gas, in particular to a three-dimensional stratum corner point grid voxel modeling method based on forward modeling. Background technique [0002] Currently popular oil and gas 3D geological modeling software (Petrel, Direct, etc.) at home and abroad, in the process of PillarGridding gridding for structural modeling, faults are forcibly bound to the planar quadrilateral grid, that is, the grid points near the fault line are moved to On the fault line, some of the grid edges become fault edges, which requires the grid to be parallel to the fault, and the grid cannot be cut by the fault, so the 3D geological grid generated during the modeling process will be generated Distortion leads to distorted facies simulation results, and physical parameters such as reservoirs cannot be effectively integrated with distorted grids. For this reason, we invented a new 3D f...

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Application Information

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IPC IPC(8): G06T17/30G06T17/05
CPCG06T17/05G06T17/30
Inventor 路慎强梁党卫余学锋赫俊民郭俊陈历胜苗永康祝庆绩
Owner CHINA PETROLEUM & CHEM CORP
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