Method and apparatus for recovering high viscosity oils

Patent · Tue Mar 06 00:00:00 EST 1984

OSTI ID:6868782

Allen, J C

Improved methods and apparatus are provided for recovering high viscosity oils from a sub-surface earth formation utilizing horizontal well apparatus. A plurality of horizontal drill holes extend from a large diameter vertical shaft hole into the formation of interest. Steam may be injected into the formation through selectively placed conventional vertical wells terminating within the oil-bearing formation, while oil is recovered from the lateral drill holes. A noncondensible gas or cold water may be injected into the formation subsequent to steam injection to enhance the overall recovery of oil.

• Assignee: Heavy Oil Process Inc.
• Patent Number(s): US 4434849
• OSTI ID: 6868782
• Resource Relation: Patent File Date: Filed date 9 Feb 1981; Other Information: PAT-APPL-232987
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
OIL WELLS
GAS INJECTION
STEAM INJECTION
WATERFLOODING
WELL INJECTION EQUIPMENT
DESIGN
WELL RECOVERY EQUIPMENT
PETROLEUM
STEAM GENERATORS
VISCOSITY
WELL SPACING
WELL STIMULATION
BOILERS
ENERGY SOURCES
ENHANCED RECOVERY
EQUIPMENT
FIELD PRODUCTION EQUIPMENT
FLUID INJECTION
FOSSIL FUELS
FUELS
RECOVERY
STIMULATION
THERMAL RECOVERY
VAPOR GENERATORS
WELLS
020300* - Petroleum- Drilling & Production