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Review of low salinity waterflooding in carbonate rocks: mechanisms, investigation techniques, and future directions

Journal Article · · Advances in Colloid and Interface Science
 [1];  [2];  [1]
  1. Univ. of Kansas, Lawrence, KS (United States)
  2. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

This review analyses the fundamental thermodynamic theory of the crude oil-brine-rock (COBR) interface and the underlying rock-brine and oil-brine interactions. Next, the available data are reviewed to outline potential mechanisms responsible for increased oil recovery from low salinity waterflooding (LSWF). We propose an approach to studying LSWF and identify the key missing links that are needed to explain observations at multiple length scales. The synergistic effect of LSWFon other chemical enhanced oil recovery methods such as surfactant, alkaline, nanoparticle and polymer flooding are also outlined. We specifically highlight key uncertainties that must be overcome to fully implement the technique in the field.

Research Organization:
Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); American Chemical Society
Grant/Contract Number:
AC04-94AL85000; NA0003525
OSTI ID:
1670758
Report Number(s):
SAND--2020-8453J; 689956
Journal Information:
Advances in Colloid and Interface Science, Journal Name: Advances in Colloid and Interface Science Vol. 284; ISSN 0001-8686
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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