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Title: Wettability literature survey - Part 1: Rock/oil/brine interactions and the effects of core handling on wettability

Abstract

Wettability is a major factor controlling the location, flow and distribution of fluids in a reservoir. The wettability of a core will affect almost all types of core analyses, including capillary pressure, relative permeability, waterflood behavior, electrical properties, and simulated tertiary recovery. The most accurate results are obtained when native- or restored-state cores are run with native crude oil and brine at reservoir temperature and pressure. Such conditions provide cores that have the same wettability as the reservoir. The wettability of originally water-wet reservoir rock can be altered by the adsorption of polar compounds and/or the deposition of organic material that was originally in the crude oil. The degree of alteration is determined by the interaction of the oil constituents, the mineral surface, and the brine chemistry. The procedures for obtaining native-state, cleaned, and restored-state cores are discussed, as well as the effects of coring, preservation, and experimental conditional conditions on wettability. Also reviewed are methods for artificially controlling the wettability during laboratory experiments.

Authors:
Publication Date:
Research Org.:
Conoco, Inc., Ponca City, OK
OSTI Identifier:
7247735
Resource Type:
Journal Article
Journal Name:
J. Pet. Technol.; (United States)
Additional Journal Information:
Journal Volume: 38:11
Country of Publication:
United States
Language:
English
Subject:
02 PETROLEUM; DRILL CORES; WETTABILITY; OIL WELLS; RESERVOIR ROCK; ROCK-FLUID INTERACTIONS; ADSORPTION; BENCH-SCALE EXPERIMENTS; BRINES; DEPOSITION; ELECTRICAL PROPERTIES; PERMEABILITY; PETROLEUM; POLAR COMPOUNDS; PRESSURE EFFECTS; RESEARCH PROGRAMS; RESERVOIR FLUIDS; RESERVOIR PRESSURE; RESERVOIR TEMPERATURE; ENERGY SOURCES; FLUIDS; FOSSIL FUELS; FUELS; PHYSICAL PROPERTIES; SORPTION; WELLS; 020200* - Petroleum- Reserves, Geology, & Exploration

Citation Formats

Anderson, W G. Wettability literature survey - Part 1: Rock/oil/brine interactions and the effects of core handling on wettability. United States: N. p., 1986. Web. doi:10.2118/13932-PA.
Anderson, W G. Wettability literature survey - Part 1: Rock/oil/brine interactions and the effects of core handling on wettability. United States. https://doi.org/10.2118/13932-PA
Anderson, W G. 1986. "Wettability literature survey - Part 1: Rock/oil/brine interactions and the effects of core handling on wettability". United States. https://doi.org/10.2118/13932-PA.
@article{osti_7247735,
title = {Wettability literature survey - Part 1: Rock/oil/brine interactions and the effects of core handling on wettability},
author = {Anderson, W G},
abstractNote = {Wettability is a major factor controlling the location, flow and distribution of fluids in a reservoir. The wettability of a core will affect almost all types of core analyses, including capillary pressure, relative permeability, waterflood behavior, electrical properties, and simulated tertiary recovery. The most accurate results are obtained when native- or restored-state cores are run with native crude oil and brine at reservoir temperature and pressure. Such conditions provide cores that have the same wettability as the reservoir. The wettability of originally water-wet reservoir rock can be altered by the adsorption of polar compounds and/or the deposition of organic material that was originally in the crude oil. The degree of alteration is determined by the interaction of the oil constituents, the mineral surface, and the brine chemistry. The procedures for obtaining native-state, cleaned, and restored-state cores are discussed, as well as the effects of coring, preservation, and experimental conditional conditions on wettability. Also reviewed are methods for artificially controlling the wettability during laboratory experiments.},
doi = {10.2118/13932-PA},
url = {https://www.osti.gov/biblio/7247735}, journal = {J. Pet. Technol.; (United States)},
number = ,
volume = 38:11,
place = {United States},
year = {Wed Oct 01 00:00:00 EDT 1986},
month = {Wed Oct 01 00:00:00 EDT 1986}
}