Aqueous-based remedial treatments for reservoirs damaged by oil-phase drilling muds

Conference · Wed Feb 01 04:00:00 EST 1984 · Soc. Pet. Eng. AIME, Pap.; (United States)

OSTI ID:6868552

Fanger, P O; Goode, D L; Berry, S D; Stacy, A L

Wells drilled with oil-phase muds are subject to severe damage due to loss of mud filtrate or whole mud to the reservoir matrix or hairline fractures. It is essential that this mud be removed prior to well production in order to gain maximum productivity. A system of aqueous-based remedial treatments has been employed to remove oil-phase drilling muds from damaged reservoirs. Mud solids are suspended and viscosity is permanently lowered by the aqueous-based system so that the mud can be flowed to the surface. Special surfactants restore the affected reservoir to a water-wet state and clay stabilizers prevent formation damage. The new system represents an improvement over conventional hydrocarbon/mutual solvent treatments. The conventional treatments do not effectively suspend mud solids and only temporarily reduce mud viscosity, while leaving the treated reservoir in an oil-wet condition.

• Research Organization: The Western Co. of North America
• OSTI ID: 6868552
• Report Number(s): CONF-840259-
• Conference Information: Journal Name: Soc. Pet. Eng. AIME, Pap.; (United States) Journal Volume: SPE12501
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
DRILL CORES
DRILLING
DRILLING FLUIDS
ENGINEERING
FAILURES
FLUIDS
FORMATION DAMAGE
FRACTURES
LOSSES
NATURAL GAS WELLS
OIL WELLS
PERMEABILITY
REMOVAL
RESERVOIR ENGINEERING
RESERVOIR ROCK
SURFACTANTS
TECHNOLOGY UTILIZATION
WELL DRILLING
WELL SERVICING
WELLS