WETTING BEHAVIOR OF SELECTED CRUDE OIL/BRINE/ROCK SYSTEMS

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The effect of aging and displacement temperatures, and brine and oil composition on wettability and the recovery of crude oil by spontaneous imbibition and waterflooding has been investigated. This study is based on displacement tests in Berea Sandstone using three distinctly different crude oils and three reservoir brines. Brine concentration was varied by changing the concentration of total dissolved solids of the synthetic brine in proportion to give brine of twice, one tenth, and one hundredth of the reservoir brine concentration. Aging and displacement temperatures were varied independently. For all crude oils, water-wetness and oil recovery increased with increase in ... continued below

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29 p.

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Tang, G.Q. & Morrow, N.R. April 1, 1997.

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Description

The effect of aging and displacement temperatures, and brine and oil composition on wettability and the recovery of crude oil by spontaneous imbibition and waterflooding has been investigated. This study is based on displacement tests in Berea Sandstone using three distinctly different crude oils and three reservoir brines. Brine concentration was varied by changing the concentration of total dissolved solids of the synthetic brine in proportion to give brine of twice, one tenth, and one hundredth of the reservoir brine concentration. Aging and displacement temperatures were varied independently. For all crude oils, water-wetness and oil recovery increased with increase in displacement temperature. Tests on the effect of brine concentration showed that salinity of the connate and invading brines can have a major influence on wettability and oil recovery at reservoir temperature. Oil recovery increased over that for the reservoir brine with dilution of both the initial (connate) and invading brine or dilution of either. Removal of light components from the crude oil resulted in increased water-wetness. Addition of alkanes to the crude oil reduced the water-wetness, and increased oil recovery. Relationships between waterflood recovery and wettability are summarized.

Physical Description

29 p.

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OSTI as DE00772382

Medium: P; Size: 29 pages

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  • Other Information: PBD: 1 Apr 1997

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  • Report No.: DE--FC21-93MC30127--27
  • Grant Number: FC21-93MC30127
  • DOI: 10.2172/772382 | External Link
  • Office of Scientific & Technical Information Report Number: 772382
  • Archival Resource Key: ark:/67531/metadc718153

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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.

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  • April 1, 1997

Added to The UNT Digital Library

  • Sept. 29, 2015, 5:31 a.m.

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  • April 10, 2017, 7:09 p.m.

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Tang, G.Q. & Morrow, N.R. WETTING BEHAVIOR OF SELECTED CRUDE OIL/BRINE/ROCK SYSTEMS, report, April 1, 1997; Morgantown, West Virginia. (digital.library.unt.edu/ark:/67531/metadc718153/: accessed December 14, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.