Wells – Processes – Chemical inter-reaction of two or more introduced materials
Patent
1982-12-27
1984-11-06
Suchfield, George A.
Wells
Processes
Chemical inter-reaction of two or more introduced materials
166307, E21B 4327
Patent
active
044806949
ABSTRACT:
Subterranean reservoirs having temperatures above about 250.degree. F. are acidized by atomizing an acid precursor in an anhydrous gas to form a mist, mixing the mist with water in the borehole of a well penetrating the reservoir to form a treating fluid comprising a dispersion of fine particles of acid precursor and anhydrous gas in water, and injecting the treating fluid into the reservoir. The acid precursors are normally liquid halogenated hydrocarbons which hydrolyze in the presence of water to generate a hydrohalic acid.
REFERENCES:
patent: 3905553 (1975-09-01), Bradley et al.
patent: 4148360 (1979-04-01), Watanabe
patent: 4203492 (1980-05-01), Watanabe
patent: 4267887 (1981-05-01), Watanabe
patent: 4320014 (1982-03-01), Vivian
Hubbard, Marvin G., "Atomization of Treating Fluids With Nitrogen", API Production Division Spring Meeting, Mar. 20 to 22, 1968.
Floyd Gerald L.
Sandford Dean
Suchfield George A.
Union Oil Company of California
Wirzbicki Gregory F.
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