Use of 100 mesh sand for improving acid efficiency

Conference · Sat Jan 01 04:00:00 EST 1977 · Proc. Annu. Southwest. Pet. Short Course; (United States)

OSTI ID:6557661

Fry, W C.D.; Boney, C L; Athley, J W; Whitsett, F T

Fracturing a limestone or dolomite reservoir and a sandstone reservoir is similar, but only until the acid is introduced into the fracture. Natural or induced flow channels become enlarged by acid reaction. Flow at right angles away from the main fracture is intensified. At this point, matrix sealants or conventional fluid loss additives are only partially effective and penetration by the main fracture into the reservoir will cease. The use of 100-mesh sand in a highly viscous nonreactive fluid spaced between volumes of acid has shown to be very beneficial when severe leakoff away from the fracture face is encountered. Now that the fluid loss in a frac-acid treatment has been controlled, low rates can be used for deep treating fluids in the zone. In the past 1-1/2 yr, several hundred wells in the Levelland and Brownfield areas of Texas have been treated with 100-mesh sand. The results have shown sustained production increases in the bulk of the wells treated. Examples of unit results are shown.

• Research Organization: Dowell Div. Dow Chemical Co.
• OSTI ID: 6557661
• Report Number(s): CONF-7704129-
• 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
ACIDIZATION
ADDITIVES
ALKALINE EARTH METAL COMPOUNDS
CALCIUM CARBONATES
CALCIUM COMPOUNDS
CARBON COMPOUNDS
CARBONATE MINERALS
CARBONATE ROCKS
CARBONATES
COMMINUTION
DOLOMITE
FLUID FLOW
FRACTURING
LIMESTONE
MAGNESIUM CARBONATES
MAGNESIUM COMPOUNDS
MINERALS
OIL WELLS
OXYGEN COMPOUNDS
ROCKS
SAND CONSOLIDATION
SEDIMENTARY ROCKS
SOURCE ROCKS
STIMULATION
WELL COMPLETION
WELL STIMULATION
WELLS