Success of a high friction diverting gel in acid stimulation of a carbonate reservoir, Cornell Unit, Wasson San Andres Field, West Texas

Conference · Thu Jan 01 04:00:00 EST 1981 · Proc. Annu. Southwest. Pet. Short Course; (United States)

OSTI ID:5591804

Wiley, C B

The Cornell Unit is a 788.2 sq m waterflood project in the Permian, San Andres, dolomite reservoir located in the Wasson Field, Yoakum County, Texas. The unit currently consists of 66 producing wells and 26 injection wells. Production is approximately 1430.9 cu m of oil per day, 1367.3 c m of water per day and 240,693.2 cu m of gas per day. Daily injection averages 4133.7 cu m of water. In 1979 a reconditioning and infill drilling program was needed to prepare the unit for a tertiary recovery project. Casing of open hole injectors and selected producers began in mid-1979 followed by infill drilling. Well stimulation by acid treatment is a routine completion procedure for these wells and, initially, the means to positively distribute the acid to the perforations was through the use of closely spaced straddle packers. Frequently, it was found that most of the perforations communicated while being acidized. The need for a diverting agent which actually would enter the formation taking the acid and temporarily block it led to usage of a gelled and complexed guar gum material, commonly called high friction gel. The success of high friction gel in achieving better overall distribution of the acid treatment is presented.

• OSTI ID: 5591804
• Report Number(s): CONF-8104238-
• Conference Information: Journal Name: Proc. Annu. Southwest. Pet. Short Course; (United States)
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030900 -- Natural Gas-- Artificial Stimulation
Plowshare-- (-1989)
ACIDIZATION
ASSOCIATED GAS
COLLOIDS
DISPERSIONS
DRILLING
ENERGY SOURCES
ENHANCED RECOVERY
FEDERAL REGION VI
FLUID INJECTION
FLUIDS
FOSSIL FUELS
FRACTURING FLUIDS
FUELS
GASES
GELS
HYDROGEN COMPOUNDS
NATURAL GAS WELLS
NORTH AMERICA
OIL WELLS
OXYGEN COMPOUNDS
PERFORMANCE
PETROLEUM
PRODUCTION
RECOVERY
STIMULATION
TEXAS
USA
WATER
WATERFLOODING
WELL COMPLETION
WELL DRILLING
WELL SPACING
WELL STIMULATION
WELLS