Computer-aided geological characterization of a sandstone reservoir, North Ward Estes field, Ward and Winkler Counties, Texas

Conference · Mon Feb 01 04:00:00 EST 1988 · AAPG Bull.; (United States)

OSTI ID:5878162

Wylie, Jr, A S; Davidsen, E K; Gillespie, J D; Butler, R S

The North Ward Estes field is located along the western edge of the Central Basin platform in Ward and Winkler Counties, Texas. The field is part of an upper Guadalupian productive trend that extends uninterrupted for 90 mi on the edge of the platform. The North Ward Estes field has produced over 350 million bbl of oil (one third of the trend's cumulative production) from more than 3000 wells since its discovery in 1929. Production in the field is from back-reef lagoonal siliciclastics (sandstones) of the Yates, Seven Rivers, and Queen Formations. A correlation scheme was developed for the field based on laterally continuous key dolomites that bracket the productive sands and segment the reservoir into discrete mappable units. Applying this scheme, more than 60,000 correlation markers were selected and loaded into a computer database. Computer-generated net isopach maps of the sands display a north-south strike. The sands pinch out into an evaporite facies updip and a carbonate facies downdip. Dip-oriented cross sections illustrate a systematic migration of the sand thicks through time. The depositional model for the field indicates that the siliciclastics were deposited during an overall progradational, shallowing-upward Late Permian event that experienced minor transgressive and regressive cycles.

• Research Organization: Chevron U.S.A., Midland, TX (USA)
• OSTI ID: 5878162
• Report Number(s): CONF-880301-
• Conference Information: Journal Name: AAPG Bull.; (United States) Journal Volume: 72:2
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020200* -- Petroleum-- Reserves
Geology
& Exploration
ALKALINE EARTH METAL COMPOUNDS
CALCIUM CARBONATES
CALCIUM COMPOUNDS
CARBON COMPOUNDS
CARBONATE MINERALS
CARBONATES
COMPUTER-AIDED DESIGN
COMPUTERS
CORRELATIONS
CROSS SECTIONS
DATA BASE MANAGEMENT
DOLOMITE
FEDERAL REGION VI
GEOLOGIC DEPOSITS
GEOLOGIC MODELS
GEOLOGIC STRUCTURES
MAGNESIUM CARBONATES
MAGNESIUM COMPOUNDS
MANAGEMENT
MAPS
MINERAL RESOURCES
MINERALS
NORTH AMERICA
OIL FIELDS
OIL WELLS
OXYGEN COMPOUNDS
PETROLEUM DEPOSITS
RESERVOIR ROCK
RESOURCES
ROCKS
SANDSTONES
SEDIMENTARY BASINS
SEDIMENTARY ROCKS
TEXAS
USA
WELLS