Steam injection method
A method is described for injecting steam into a subterranean reservoir via a well penetrating the reservoir, comprising adding to steam generator feedwater used to generate the steam or adding to the steam, or adding to both the feedwater and the steam. The mixture consists of: (a) a compound selected from the group consisting of ammonium salts of inorganic acids, ammonium salts of carboxylic acids, quaternary ammonium halides, amine or substituted amine hydrochlorides, and mixtures thereof; and (b) a compound selected from the group consisting of ammonia, salts which decompose to form acid neutralizers or buffers having alkaline pH values, amides of carbamic acid or thiocarbamic acid and derivatives of such amides, tertiary carboxylic acid amides and their substituted and alkylated derivatives, and mixtures thereof.
- Assignee:
- Union Oil Company of California, Los Angeles, CA
- Patent Number(s):
- US 4572296
- OSTI ID:
- 5771685
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
020300* -- Petroleum-- Drilling & Production
ACID NEUTRALIZING CAPACITY
AMIDES
AMINES
AMMONIUM COMPOUNDS
AMMONIUM HALIDES
BOILERS
BUFFERS
CARBAMIC ACID ESTERS
CARBOXYLIC ACID ESTERS
CARBOXYLIC ACID SALTS
CHEMISTRY
DISPERSIONS
ESTERS
FEEDWATER
FLUID INJECTION
HALIDES
HALOGEN COMPOUNDS
HYDROCHLORIC ACID
HYDROGEN COMPOUNDS
INORGANIC ACIDS
MIXTURES
OIL WELLS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXYGEN COMPOUNDS
PH VALUE
STEAM GENERATION
STEAM GENERATORS
STEAM INJECTION
STIMULATION
VAPOR GENERATORS
WATER
WATER CHEMISTRY
WELL STIMULATION
WELLS