C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
C09K 8/36 (2006.01) C09K 8/26 (2006.01) C09K 7/02 (1990.01)
Patent
CA 2084780
Described is the use of oleophilic monomeric and/or oligomeric diesters of carbonic acid with the same or different oil-soluble and ecologically compatible monofunctional and optionally polyfunctional alcohols as a component of oil-based or water-based drilling fluids and other fluid drill-hole treatment agents. The invention in one embodiment comprises oil-based fluids, and particularly inverted fluids of the W/O type, which in the continuous phase at least in part contain oleophilic carbonic acid diesters. In a further important embodiment the invention relates to water-based emulsion fluids which in the dispersed oil phase at least in part contain said oleophilic carbonic acid diesters. The invention further comprises drill-hole treatment agents, and especially drilling fluids of the above-mentioned types, the continuous or dispersed oil phases of which, respectively, consist of oleophilic carbonic acid diesters or contain said ester type in admixture with other ecologically compatible oil mixing components. Preferred mixing components for a use in combination with the carbonic acid diesters are appropriate carboxylic acid ester owls, oleophilic alcohols and/or oleophilic ethers.
Herold Claus-Peter
Mueller Heinz
von Tapavicza Stephan
Westfechtel Alfred
Borden Ladner Gervais Llp
Cognis Deutschland Gmbh & Co. Kg
Henkel Kommanditgesellschaft Auf Aktien
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