Method of extinguishing oil and gas well fires |
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| 申请号 | US21384371 | 申请日 | 1971-12-29 | 公开(公告)号 | US3856088A | 公开(公告)日 | 1974-12-24 |
| 申请人 | NALCO CHEMICAL CO; | 发明人 | FRISQUE A; | ||||
| 摘要 | Oil and gas well fires may be extinguished by injecting into such wells below the fire a stable liquid dispersion of a water soluble anionic vinyl addition polymer and a water soluble cationic polymer, and then inverting this liquid dispersion in the well to produce a three-dimensional water and hydrocarbon liquid insoluble gel-like structure which seals off said well; thereby extinguishing said fires. | ||||||
| 权利要求 | 1. A METHOD FOR EXTINGUISHING OIL AND GAS WELL FIRES WHICH COMPRISES INJECTING INTO SAID WELL AT A POINT BELOW THE FIRE A STABLE A LIQUID DISPERSION OF A WATER SOLUBLE ANIONIC VINYL ADDITION POLYMER AND A WATER SOLUBLE CATIONIC POLYMER COMPRISING: A. A POLYMERIC LATEX COMPOSED OF A WATER-IN-OIL EMULSION WHICH CONTAINS DISPERSED THEREIN A FINELY-DIVIDED WATER SOLUBLE ANIONIC VINYL ADDITION POLYMER, SAID POYLMERIC LATEX HAVING UNIFORMLY DISTRIBUTED THERETHROUGHOUT; B. A WATER SOLUBLE CATIONIC POLYMER: WITH THE WEIGHT RATIO OF (A) TO (B) BEING WITHIN THE RANGE OF 1:10 TO 10:1 AND THE TOTAL AMOUNT OF (A) PLUS (B) PRESENT WITHIN SAID DISPERSION BEING WITHIN THE RANGE OF FROM 5 TO 75 PERCENT BY WEIGHT, AND THEN INVERTING THE LIQUID DISPERSION IN THE WELL TO PRODUCE A THREE-DIMENSIONAL WATER AND HYDROCRBON LIQUID INSOLUBLE GEL-LIKE STRUCTURE WHICH SEALS OFF SAID WELL; THEREBY EXTINGUISHING SAID FIRES. 2. The method of claim 1 where the weight ratio of (A) to (B) is within the range of from 1:5 to 5:1 and the amount of (A) plus (B) present within said dispersion is within the range of from 5 to 40 percent by weight. 3. The method of claim 1 wherein the inversion is accomplished by admixing the stable liquid dispersion with water which contains 0.01 to 5 percent by weight of a water soluble surfactant or a water soluble caustic material. 4. THE METHOD OF CLAIN 1 WHEREIN THE INVERSION IS ACCOMPLISHED BY FIRST INJECTING INTO SAID WELL PRIOR TO THE INJECTION OF THE STABLE LIQUID DISPERSION AN AQUEOUS LIQUID WHICH CONTAINS 0.1 TO 5 PERCENT BY WEIGHT OF A WATER SOLUBLE SURFACTANT OR A WATER SOLUBLE CAUSTIC MATERIAL. 5. The method of claim 3 wherein: A. a polymeric latex composed of a water-in-oil emulsion which contains dIspersed therein a finely-divided polyacrylic acid or a water soluble salt thereof, said polymeric latex having uniformly distributed therethroughout; B. a water soluble alkylene polyamine polymer. 6. The method of claim 4 wherein: A. a polymeric latex composed of a water-in-oil emulsion which contains dispersed therein a finely-divided polyacrylic acid or a water soluble salt thereof, said polymeric latex having uniformly distributed therethroughout; B. a water soluble alkylene polyamine polymer. |
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