Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Alkaline earth metal
Patent
1994-09-09
1995-10-17
Bos, Steven
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Alkaline earth metal
4236585, 134 1, 166311, 166249, C01F 100, C22B 2600, B08B 700, E21B 3700
Patent
active
054588600
ABSTRACT:
The present invention relates to the use of low frequency sonic energy within the range of 1.25 to 6.5 KHz, preferably less than 2.0 KHz and most preferably 1.25 KHz, for enhancing the dissolution of alkaline earth metal scales from well bores using a scale-removing solvent comprising an aqueous alkaline solution having a pH of about 8 to about 14 and containing EDTA or DTPA and a catalyst or synergist, preferably an oxalate anion. When the scale deposit is contacted with the scale removing solvent while simultaneously transmitting low frequency sonic energy through the solvent, substantially more scale is dissolved at a faster rate than previously possible.
REFERENCES:
patent: 3105779 (1963-10-01), Bulat
patent: 3648769 (1972-03-01), Sawyer
patent: 3956164 (1976-05-01), Walker et al.
patent: 3970146 (1976-07-01), Keenan, Jr.
patent: 4280557 (1981-07-01), Bodine
patent: 4320528 (1982-03-01), Scharton et al.
patent: 4372787 (1983-02-01), Fields et al.
patent: 4683556 (1987-07-01), Willis
patent: 4980077 (1990-12-01), Morris et al.
Morris Richard L.
Paul James M.
Bos Steven
Hager Jr. George W.
McKillop Alexander J.
Miller Lawrence O.
Mobil Oil Corporation
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