Method for stimulating well production. [aqueous acid solution containing sulfonated ethoxylated aliphatic hydrocarbon]

Patent · Fri Dec 20 04:00:00 EST 1974

OSTI ID:7365844

Tate, J F; Maddox, J Jr; Shupe, R D

A method is given of increasing the production of fluids from a subterranean fluid-bearing formation having present therein acid-soluble components comprising injecting down the well bore into formation under a pressure greater than the formation pressure, an aqueous acidic solution containing from about 0.5 to about 28 percent by weight of a mineral acid having a compound therein in an amount of from about 0.005 percent to about 2 percent by weight, said compound being a water soluble sulfonated, ethoxylated compound, maintaining said solution in contact with the formation and production equipment for a time sufficient for the acid component to chemically react with the acid-soluble components of the formation to etch passageways therethrough thereby increasing substantially the flow capacity of the said subterranean formation and whereby said sulfonated, ethoxylated compound component is effective to prevent the formation of insoluble calcium compounds or the precipitation of calcium carbonate from the acid-spent solution.

• Assignee: Texaco Inc.
• Patent Number(s): US 3946813
• OSTI ID: 7365844
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
ACIDIZATION
ENERGY SOURCES
ENHANCED RECOVERY
FOSSIL FUELS
FUELS
HYDROCARBONS
OIL WELLS
ORGANIC COMPOUNDS
PETROLEUM
WELL STIMULATION
WELLS