C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
C09K 8/36 (2006.01)
Patent
CA 2351088
An invert emulsion suitable for drilling subterranean wells, in particular oil and gas wells is disclosed which has negative alkalinity and includes an oleaginous phase, and a non-oleaginous phase and an emulsifying agent which stabilizes the invert emulsion under conditions of negative alkalinity. The practice of the present invention permits the formulation of drilling fluids which are absent an alkaline reserve and yet are suitable for drilling oil and gas wells.
L'invention se rapporte à une émulsion inverse destinée au forage de puis souterrains, notamment de puits de pétrole et de gaz. Cette émulsion inverse possède une alcalinité négative et comporte une phase oléagineuse, une phase non oléagineuse et un agent émulsifiant qui stabilise l'émulsion inverse dans des conditions d'alcalinité négative. Selon la présente invention, il est possible de formuler en l'absence d'une réserve alcaline des fluides de forage qui s'avèrent adaptés au forage des puits de pétrole et de gaz.
Finlayson & Singlehurst
M-I L.l.c.
LandOfFree
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