Process for secondary recovery

Patent · Tue Oct 27 00:00:00 EST 1981

OSTI ID:5920012

Hunter, W D

Hydrocarbons are recovered from a subterranean hydrocarbonbearing formation penetrated by an injection well and a production well. Hydrocarbons are displaced toward the production well using a drive fluid such as water thickened with polyacrylamide or partially hydrolyzed polyacrylamide alkoxylated with an alkylene oxide. If desired, a small amount of a sulfated, alkoxylated polyacrylamide maybe added, i.e., an n-substituted polyacrylamide having n-substituents of the formula: -(CH/sub 2/CH/sub 2/O)MSO/sub 3/M, where M is an integer of from 1 to 5 and M is selected from the group consisting of hydrogen, sodium, potassium or ammonium. Optionally, the drive fluid can be saturated with carbon dioxide and/or natural gas at the injection pressure.

• Assignee: Texaco Development Corp
• Patent Number(s): US 4297226
• OSTI ID: 5920012
• Resource Relation: Patent File Date: Filed date 19 Feb 1980
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
OIL WELLS
FLUID INJECTION
PETROLEUM
ENHANCED RECOVERY
AMMONIUM COMPOUNDS
CARBON DIOXIDE
ETHYLENE
NATURAL GAS
OXIDES
POLYACRYLATES
POLYAMIDES
POTASSIUM COMPOUNDS
PROPYLENE
SODIUM COMPOUNDS
ALKALI METAL COMPOUNDS
ALKENES
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
ENERGY SOURCES
ESTERS
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
HYDROCARBONS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
OXYGEN COMPOUNDS
POLYMERS
POLYVINYLS
RECOVERY
WELLS
020300* - Petroleum- Drilling & Production