DOCUMENTATION FOR PROGRAM OGRE

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Description

This is a brief description of a computer program which was written by Oleh Weres to generate discrete grids for IFD* type computer programs. The output of the program includes data which can be used directly for input to the program SHAFT78. The program is specifically intended for large-scale two or three-dimensional reservoir simulation. The program requires, as input, the x, y, z coordinates of the discrete element locations being used to specify a particular reservoir's geological system. From the list of element locations, the program finds the midpoints of lines joining adjacent elements. At each midpoint the program constructs ... continued below

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58 p.

Creation Information

Weres, O. & Schroeder, R.C. June 1, 1978.

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Description

This is a brief description of a computer program which was written by Oleh Weres to generate discrete grids for IFD* type computer programs. The output of the program includes data which can be used directly for input to the program SHAFT78. The program is specifically intended for large-scale two or three-dimensional reservoir simulation. The program requires, as input, the x, y, z coordinates of the discrete element locations being used to specify a particular reservoir's geological system. From the list of element locations, the program finds the midpoints of lines joining adjacent elements. At each midpoint the program constructs a perpendicular plane. The intersections of the planes in the three-space defines an irregular (in general) n-sided polyhedron around each element center. In two-dimensions the program produces a unique 'tiling' which has polygons with all faces perpendicular to the lines joining adjacent elements. The areas between adjoining elements and the volume of each element are calculated. The end result, in general, is a three-dimensional grid of n-sided polyhedra for which the element locations, the connecting (flow) areas, and the element volumes are all known. Since the grids are finite the program must have information about the boundary of the grid. This is supplied as a set of 'dummy' elements which are used only to limit the extent of the grid and are not intended for use in the reservoir simulation.

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58 p.

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  • Report No.: LBL-7060
  • Grant Number: DE-AC02-05CH11231
  • DOI: 10.2172/1004185 | External Link
  • Office of Scientific & Technical Information Report Number: 1004185
  • Archival Resource Key: ark:/67531/metadc829304

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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Creation Date

  • June 1, 1978

Added to The UNT Digital Library

  • May 19, 2016, 3:16 p.m.

Description Last Updated

  • June 15, 2016, 7:04 p.m.

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Weres, O. & Schroeder, R.C. DOCUMENTATION FOR PROGRAM OGRE, report, June 1, 1978; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc829304/: accessed April 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.