Method for inhibiting silica dissolution using phase separation during oil well steam injection

Patent · Tue Apr 03 04:00:00 EDT 1990

OSTI ID:6843410

Reed, M G

This patent describes a method for inhibiting silica dissolution in the vicinity of a well penetrating a hydrocarbon-containing formation. It comprises: adding an amount of a chemical compound to a wet steam which forms an alkaline component in the vapor phase of the wet stream effective to inhibit corrosion int he vicinity of the vapor phase condensate; separating in a separation vessel the wet steam into a liquid phase and the vapor phase; removing an amount of the liquid phase from the separation vessel effective to reduce silica dissolution in the vicinity of the liquid phase; and injecting the wet steam into the formation.

• Assignee: Chevron Research Co., San Francisco, CA
• Patent Number(s): US 4913236; A
• Application Number: PPN: US 7-307222A
• OSTI ID: 6843410
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
ALKALINE EARTH METAL COMPOUNDS
CHALCOGENIDES
CHEMICAL COMPOSITION
CORROSION INHIBITORS
CORROSION PROTECTION
ENERGY SOURCES
ENHANCED RECOVERY
FLUID INJECTION
FOSSIL FUELS
FUELS
MINERALS
OIL WELLS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PETROLEUM
RECOVERY
SILICA
SILICON COMPOUNDS
SILICON OXIDES
STEAM INJECTION
STIMULATION
THERMAL RECOVERY
WELL STIMULATION
WELLS