Method and apparatus for enhanced oil recovery

Patent · Tue Jun 18 04:00:00 EDT 1991

OSTI ID:5574084

Schwab, Jr, C M

This patent describes a mandrel connectable in a conduit and having a longitudinal flow passage therethrough. It includes an upper tubular section having means therein for separating and collecting wetter steam and hot water from steam injected into the flow passage; and a lower body section having a receptacle therein offset from the flow passage, the receptacle communicating the flow passage with the mandrel exterior and ports in the lower body communicating the receptacle with the flow passage. This patent also describes a method of selectively providing steam or wet steam and hot water to one or more formation in an enhanced oil recovery injection well simultaneously. It includes drilling a hole through earth formations containing viscous petroleum deposits; running casing into the hole and perforating the casing at selected intervals adjacent each the formation; running one or more tubing strings into the casing having a selected mandrel or selected spaced apart mandrels and a packer therein above each mandrel.

• Assignee: Otis Engineering Corp., Dallas, TX (USA)
• Patent Number(s): US 5024274; A
• Application Number: PPN: US 7-901556
• OSTI ID: 5574084
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
ENERGY SOURCES
ENHANCED RECOVERY
EQUIPMENT
FLUID INJECTION
FOSSIL FUELS
FUELS
GEOLOGIC DEPOSITS
INJECTION WELLS
MINERAL RESOURCES
OIL WELLS
PETROLEUM
PETROLEUM DEPOSITS
RECOVERY
RESOURCES
STEAM INJECTION
STIMULATION
TECHNOLOGY ASSESSMENT
VISCOSITY
WATERFLOODING
WELL COMPLETION
WELL STIMULATION
WELLS