Earth boring – well treating – and oil field chemistry – Earth boring – Contains organic component
Patent
1993-10-20
1994-09-06
Geist, Gary
Earth boring, well treating, and oil field chemistry
Earth boring
Contains organic component
507139, 252 8551, C09K 702
Patent
active
053448189
ABSTRACT:
Improved mud additive compositions are provided which are especially formulated to control hole enlargement due to salt bed erosion during drilling, and to assist in solubilization of deposited salt during well operations. The compositions include a first ingredient such as sodium or potassium ferrocyanide and mixtures thereof, and a second ingredient such as the trisodium salt of nitrilotriacetic acid and alkali metal citrates. The first ingredient is generally present at a level of from about 50-95% by weight in the particulate, dilutable form of the invention, whereas the second ingredient is present at a level of from about 5-50% by weight. The compositions hereof may be added to drilling mud during drilling operations or to fresh water for removing salt depositions.
REFERENCES:
patent: 2940729 (1960-06-01), Rakowitz
patent: 3580337 (1971-05-01), Gogarty
patent: 4232740 (1980-11-01), Park
patent: 4318835 (1982-03-01), Clarke
patent: 5213446 (1993-05-01), Dovan
Geist Gary
Jacam Chemical Partners Ltd.
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