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Lovington San Andres waterflood--a case history

Conference · · Am. Pet. Inst., Publ.; (United States)
OSTI ID:5596218
The Lovington San Andres Pool, located in central Lea County, New Mexico, was unitized in late 1962 for the purpose of initiating a field-wide waterflood. Skelly Oil Co., as unit operator, began water injection early the following year. The reservoir is predominantly composed of hard, dense crystalline dolomite with intermittent streaks of gray shale, anhydrite, and sand. The structure (as shown by a geologic contour map) has a depth of approx. 4,600 ft and is a domal-type anticline trending northeast to southwest. Productive limits on the flanks of the strucutre are attributed to lack of permeability and porosity development, as well as to the existence of bottom or edge water. Net pay has been estimated to average 38 ft in thickness. The main producing mechanism during primary depletion was solution gas drive with a minor degree of water influx. The water influx has resulted in a higher primary recovery and a lower secondary recovery than otherwise might have been expected. Secondary oil recovery for the unit to date has been 25% of primary recovery, with areas within the project indicating secondary recovery ranging from 30 to 130% of primary recovery. Secondary oil recovery has been greatest along the S. and E. flanks of the reservoir.
Research Organization:
Skelly Oil Co.
OSTI ID:
5596218
Report Number(s):
CONF-710478-
Conference Information:
Journal Name: Am. Pet. Inst., Publ.; (United States)
Country of Publication:
United States
Language:
English