USE OF SURFACE-ACTIVE ESTER SULFONATE SALTS IN WATER- AND OIL-BASED DRILLING FLUIDS AND OTHER DRILL-HOLE TREATMENT AGENTS.

摘要

DESCRIBED IS THE USE OF SURFACE-ACTIVE SALTS OF ESTERS FROM MONO- AND/OR POLYOLEFINICALLY UNSATURATED CARBOXYLIC ACIDS HAVING AT LEAST 8 CARBON ATOMS AND LOWER MONO- AND/OR POLYHYDRIC ALCOHOLS, WHICH ESTERS HAVE BEEN SULFONATED IN (AN) INNER POSITION(S) AND COMPRISE SULFUR THAT HAS BEEN ORGANICALLY BONDED TO AN AT LEAST PREDOMINANT DEGREE, (BRIEFLY: ESTER SULFONATE SALTS) AS ECOLOGICALLY COMPATIBLE EMULSIFIERS OF THE W/O TYPE AND/OR O/W TYPE IN FLUID AND PUMPABLE DRILLING FLUIDS AND OTHER FLUID DRILLING - HOLE TREATMENT AGENTS WHICH COMPRISE A CONTINUOUS OR A DISPERSED OIL PHASE TOGETHER WITH AN AQUEOUS PHASE AND WHICH ARE SUITABLE FOR AN ENVIRONMENTALLY ACCEPTABLE EXPLOITATION OF GEOLOGICAL RESOURCES, FOR EXAMPLE OIL OF NATURAL GAS DEPOSITS. THE INVENTION FURTHER RELATES TO INVERTED DRILLING FLUIDS WHICH ARE SUITABLE FOR A NON-POLLUTING EXPLOITATION OF GEOLOGICAL RESOURCES AND CONTAIN A CONTINUOUS OIL PHASE AND,PRESENT THEREIN, A DISPERSED AQUEOUS PHASE TOGETHER WITH EMULSIFIERS, FURTHER CONVENTIONAL AUXILIARY AGENTS SUCH AS THICKENERS, FLUID-LOSS ADDITIVES, WEIGHTING AGENTS, WATER-SOLUBLE SALTS AND/OR ALKALI RESERVES, SAID INVERTED DRILLING FLUIDS BEING CHARACTERIZED IN THAT THEY CONTAIN SURFACE-ACTIVE EASTER SULFONATE SALTS OF THE TYPEINDICATED AS EMULSIFIER OR AS AN EMULSIFIER COMPONENT TOGETHER WITH AN ECOLOGICALLY COMPATIBLE CONTINUOUS OIL PHASE.