| PATENT ASSIGNEE'S COUNTRY | USA |
| UPDATE | 03.99 |
| PATENT ASSIGNEE | Plainsman Technology Inc (Marlow; Okla) |
| PATENT CLAIMS |
Method of stimulating hydrocarbon prodn from clay contg subterranean formation; contacting said formation with aq compn under conditions to create fracture in formation; wherein aq compn is comprised of water having dissolved therein an additive to prevent permeability redn of clay contg formation; said additive being - (Me)3(Et)N cation . Carbonate Anion & - Ammonium fluoride |
| PATENT PHOTOCOPY | Available on request |
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