Waterflooding method of secondary recovery using liquid hydrogen sulphide

Patent · Mon Dec 28 23:00:00 EST 1964

OSTI ID:6683213

Bernard, G G

This is an improved solvent-waterflood process. It involves injecting into an input well a slug of liquefied hydrogen sulfide, amounting to 0.03 to 0.20 reservoir pore volume. The hydrogen sulfide must be injected under sufficient pressure to maintain it as a liquid in the reservoir. This injection is followed by a slug of water- miscible, but not necessarily oil-miscible, partially oxygenated hydrocarbons. Floodwater is then injected to drive the hydrogen sulfide and partially oxygenated hydrocarbons toward a producing well. Raw oxidation products, such as alcohols, aldehydes, ketones, and organic acids, are most desirable and economic. They need not be pure chemicals, but can be of commercial grade. Petroleum is recovered from adjoining production wells. (4 claims)

• Assignee: Pure Oil Co.
• Patent Number(s): US 3163213
• OSTI ID: 6683213
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030900 -- Natural Gas-- Artificial Stimulation
Plowshare-- (-1989)
CHALCOGENIDES
ENERGY SOURCES
ENHANCED RECOVERY
FLUID INJECTION
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
HYDROCARBONS
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
INJECTION WELLS
LIQUIDS
NATURAL GAS
NATURAL GAS WELLS
OIL WELLS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
PETROLEUM
RECOVERY
RESERVOIR PRESSURE
STIMULATION
SULFIDES
SULFUR COMPOUNDS
WATERFLOODING
WELL PRESSURE
WELL STIMULATION
WELLS