Method of controlling permeability damage of hydrocarbon formations during steam injection using bicarbonate ions and sources of ammonia

Patent · Tue Feb 27 04:00:00 EST 1990

OSTI ID:7128758

Hsueh, L; Reed, M G

This patent describes a method for inhibiting permeability damage of hydrocarbon formation containing clay minerals in the vicinity of a well penetrating the formation. It comprises: injecting a wet steam that includes an amount of ammonia in the vapor phase of the wet steam resulting from the addition of anhydrous ammonia to the wet steam effective to inhibit permeability damage of the formation in the vicinity of the vapor phase; and an amount of bicarbonate salt of the alkali metals, or mixtures thereof, effective to raise the liquid phase pH of the wet steam to within the range of about 7.5 to about 10.5.

• Assignee: Chevron Research Co., San Francisco, CA
• Patent Number(s): A; US 4903769
• Application Number: PPN: US 7-278908A
• OSTI ID: 7128758
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
AMMONIA
CARBON COMPOUNDS
CARBONATES
CHEMICAL COMPOSITION
DISPLACEMENT FLUIDS
ENERGY SOURCES
ENHANCED RECOVERY
FLUID INJECTION
FLUIDS
FOSSIL FUELS
FUELS
HYDRIDES
HYDROGEN COMPOUNDS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
OIL WELLS
OXYGEN COMPOUNDS
PERMEABILITY
PETROLEUM
RECOVERY
RESERVOIR ROCK
STEAM INJECTION
STIMULATION
THERMAL RECOVERY
WELL STIMULATION
WELLS