B - Operations – Transporting – 09 – B
Patent
B - Operations, Transporting
09
B
B09B 1/00 (2006.01) E21B 21/06 (2006.01) E21B 41/00 (2006.01)
Patent
CA 2097198
The present invention relates to a method for treating drill cuttings during oil and gas drilling, in particular in connection with oil and gas wells below water. This invention aims at a secure and permanent deposition of drill cuttings without risking environmental pollution. This invention is based on the philosophy that there is made a dispersion or emulsion of drill cuttings in water, as the particles of drill cuttings, including all present contamination, are disintegrated to obtain particles being so small that they may be dispersed in a relatively small amount of water. As no particle has a size above a predetermined tiny value, this dispersion may be pumped into most existing sub-sea structures and are thus permanently disposed of. The method is based on a continuous crushing and cleaning process, preferably including several stages, and where the process comprises several feedback paths and circulating loops, resulting in the fact that portions of the treated material run through the process several times until the desired, stable dispersion has been reached.
Den Norske Stats Oljeselskap A.s.
Marks & Clerk
Procon Engineering As
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