CPC C09K 8/685 (2013.01) [C09K 8/584 (2013.01); C09K 8/588 (2013.01); C09K 8/602 (2013.01); C09K 8/64 (2013.01); C09K 8/82 (2013.01); C09K 8/90 (2013.01); E21B 43/26 (2013.01)] | 22 Claims |
1. A non-aqueous liquid immiscible in water comprising:
(i) a non-polar hydrocarbon oil;
(ii) an oil-wetting surface active material selected from the group consisting of sorbitan esters, ethoxylated sorbitan esters, alkoxylated glycerides and alkylene oxide adducts of a C6-C30 alcohol or phenol or a mixture thereof;
(iii) an organophilic clay;
(iv) a crosslinking agent of a borate ion source; and
(v) optionally, a clay activator.
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