Comparison of laboratory and in-situ measurements of waterflood residual oil saturations for the Cormorant field

Journal Article · Fri Mar 01 00:00:00 EST 1991 · SPE Formation Evaluation (Society of Petroleum Engineers); (United States)

DOI:https://doi.org/10.2118/19300-PA· OSTI ID:5741331

van Poelgeest, F ^[1]; Niko, H ^[2]; Modwid, A R ^[3]

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1. Koninklijke/Shell E and P Lab. (NL)
2. Shell International Petroleum Mij. (NL)
3. Shell U.K., E and P (GB)

Shell Expro and Koninklijke/Shell E and P Laboratorium (KSEPL) have been engaged in a multidisciplinary effort to determine the water flood residual oil saturation (ROS) in two principal reservoirs of the Cormorant oil field in the U.K. sector of the North Sea. Data acquisition included special coring and testing. The study, which involved new reservoir-engineering and petrophysical techniques, was aimed at establishing consistent ROS values. This paper reports that reservoir-engineering work centered on reservoir-condition corefloods in the relative-permeability-at-reservoir-conditions (REPARC) apparatus, in which restoration of representative wettability condition was attempted with the aging technique. Aging results in a consistent reduction of water-wetness of all core samples. The study indicated that ROS values obtained on aged cores at water throughputs of at least 5 PV represented reservoir conditions. The petrophysical part of the study involved ROS estimation from sponge-core analysis and log evaluation.

• OSTI ID: 5741331
• Journal Information: SPE Formation Evaluation (Society of Petroleum Engineers); (United States), Vol. 6:1; ISSN 0885-923X
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
29 ENERGY PLANNING
POLICY AND ECONOMY
DRILL CORES
WETTABILITY
OIL FIELDS
OIL SATURATION
RESERVOIR ROCK
PERMEABILITY
WATERFLOODING
UNITED KINGDOM
WELL DRILLING
PLANNING
CALCULATION METHODS
ENHANCED RECOVERY
PETROGRAPHY
RESERVOIR ENGINEERING
RESIDUAL PETROLEUM
DEVELOPED COUNTRIES
DRILLING
ENERGY SOURCES
ENGINEERING
EUROPE
FLUID INJECTION
FOSSIL FUELS
FUELS
GEOLOGIC DEPOSITS
MINERAL RESOURCES
PETROLEUM
PETROLEUM DEPOSITS
RECOVERY
RESOURCES
SATURATION
020200* - Petroleum- Reserves
Geology
& Exploration
020300 - Petroleum- Drilling & Production
294002 - Energy Planning & Policy- Petroleum