C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
C09K 8/34 (2006.01) C09K 8/26 (2006.01) E21B 43/22 (2006.01)
Patent
CA 2192998
The invention relates to the use of at least predom-inantly linear hydrocarbon compounds olefinically un-saturated in the alpha-position with flashpoints of at least about 80°C as the oil phase or as part of the oil phase of oil- or water-based free-flowing borehole servicing preparations. It also relates to a drilling fluid composition comprising an auxillary fluid compris-ing such linear hydrocarbon compounds olefinically unsaturated in the alpha-position and to processes for sinking a bore in a rock. Particular significance is attributed to corresponding drilling fluids which, together with the alpha-olefins, contain other oil phases from the field of borehole servicing preparations and are distinguished by ecological compatibility, being degrad-able under both aerobic and anaerobic conditions. Suitable mixture components for the oil phase are, in particular, oleophilic alcohols, ethers and corresponding esters selected from carboxylic acid esters and/or carbonic acid esters.
On utilise des composés hydrocarbures oléfiniquement insaturés, au moins pour la plupart linéaires et alpha-stables, avec des points d'inflammation d'au moins 80 DEG C, comme phase huile ou composant de la phase huile de produits fluides de traitement de puits à base d'huile ou d'eau. Les produits correspondants de lavage de puits contiennent, outre les alpha-oléfines, d'autres phases huile faisant partie des produits de traitement de puits, se caractérisent par leur compatibilité avec l'environnement et par leur dégradabilité aussi bien aérobie qu'anaérobie. Parmi les phases huile mixtes les plus appropriées on compte les alcools oléophiles, les éthers et les esters correspondants d'acide carboxylique et/ou carbonique.
Fies Matthias
Herold Claus-Peter
Mueller Heinz
von Tapavicza Stefan
Borden Ladner Gervais Llp
Cognis Deutschland Gmbh & Co. Kg
Henkel Kommanditgesellschaft Auf Aktien
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