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- W1506584196 abstract "Well logs from a test hole drilled in the Edwards Limestone near San Antonio, Texas, were evaluated using various computer programs to examine formation characteristics. The hole was cored from 600 feet to a total depth of 1160 feet and eleven separate logs were run on the cored interval. Numerous core samples were analyzed for mineralogy, density, porosity, sonic velocity, and permeability. These data provided an unusual opportunity to determine the reliability of computer codes used in formation evaluation from geophysical logs. Computer results were obtained on mineralogy using a method of linear programming on selected logs and were found to compare quite favorably with the x-ray analysis of the core. With these computed results, a thermal conductivity log was generated which was combined with a temperature gradient log to produce a heat flow log. Regions of internal water circulation are clearly defined in the heat flow log and coincide with zones of high permeability determined from core analysis and pump tests. Programs were applied which calculate a lithology corrected porosity, matrix density, matrix velocity, sonic porosity, secondary (fracture and vugular) porosity, and apparent water resistivity from logs. The algorithms for these codes are discussed and the resulting logs aremore » presented and compared with pictures of the core and the televiewer log.« less" @default.
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- W1506584196 date "1973-01-01" @default.
- W1506584196 modified "2023-09-27" @default.
- W1506584196 title "Computer techniques applied to formation evaluation. [Edwards Limestone near San Antonio]" @default.
- W1506584196 hasPublicationYear "1973" @default.
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