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
- Mississippi State Univ., MS (United States)
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.
- Research Organization:
- Hughes Eastern Corp., Jackson, MS (United States)
- Sponsoring Organization:
- USDOE Assistant Secretary for Fossil Energy, Washington, DC (United States)
- DOE Contract Number:
- FC22-94BC14962
- OSTI ID:
- 661374
- Report Number(s):
- DOE/BC/14962-20; ON: DE98003880; TRN: AHC29814%%26
- Resource Relation:
- Other Information: PBD: 20 Jan 1998
- Country of Publication:
- United States
- Language:
- English
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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
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. Annual report for the period, January 1, 1994--December 31, 1994