The utilization of the microflora indigenous to and present in oil-bearing formations to selectively plug the more porous zones thereby increasing oil recovery during waterflooding. Sixteenth quarterly progress report, October 1--December 31, 1997

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There are ten injection wells receiving nutrients and twenty producing wells in test patterns are being monitoring for responses. Petrophysical studies of recovered core sample from the 3 newly drilled wells are still in progress. Monthly collection of produced fluids from the test and control wells in all patterns continued with the following tasks being performed: aliphatic profile (gas chromatographic analysis); API gravity and absolute viscosity under reservoir temperature; pH of produced water; surface tension (ST) of produced water (water-air); interfacial tension (IFT) for produced oil-water system; microbiological population; and inorganic analyses (nitrate, phosphate, sulfate, sulfide, chloride, potassium, and hardness). ... continued below

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4 p.

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Brown, L. R. & Vadie, A. A. January 20, 1998.

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Description

There are ten injection wells receiving nutrients and twenty producing wells in test patterns are being monitoring for responses. Petrophysical studies of recovered core sample from the 3 newly drilled wells are still in progress. Monthly collection of produced fluids from the test and control wells in all patterns continued with the following tasks being performed: aliphatic profile (gas chromatographic analysis); API gravity and absolute viscosity under reservoir temperature; pH of produced water; surface tension (ST) of produced water (water-air); interfacial tension (IFT) for produced oil-water system; microbiological population; and inorganic analyses (nitrate, phosphate, sulfate, sulfide, chloride, potassium, and hardness). Production data on all wells in all patterns continues to be evaluated. Increased gas production that has been noted in some wells could be the result of microbial activity or from previous unswept areas of the reservoir. Samples of gas were collected from selected production wells and analyzed by gas chromatography using a Fisher Model No. 12 Gas Partitioner. The results of analyses from four sets of samples are given.

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4 p.

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OSTI as DE98003880

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  • Other Information: PBD: 20 Jan 1998

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  • Other: DE98003880
  • Report No.: DOE/BC/14962--20
  • Grant Number: FC22-94BC14962
  • DOI: 10.2172/661374 | External Link
  • Office of Scientific & Technical Information Report Number: 661374
  • Archival Resource Key: ark:/67531/metadc708990

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  • January 20, 1998

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  • Sept. 12, 2015, 6:31 a.m.

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  • Nov. 11, 2015, 1:06 p.m.

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Brown, L. R. & Vadie, A. A. The utilization of the microflora indigenous to and present in oil-bearing formations to selectively plug the more porous zones thereby increasing oil recovery during waterflooding. Sixteenth quarterly progress report, October 1--December 31, 1997, report, January 20, 1998; United States. (digital.library.unt.edu/ark:/67531/metadc708990/: accessed December 13, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.