Patent ID: 8985208
Filing Date: 2015-03-24
Classification: C04B,C09K

Abstract:
1. A method of consolidating sand in a subterranean formation, which method comprises: (i) contacting said sand in a first location in the presence of water with a slurry in a liquid medium of cement wherein the liquid medium is an organic liquid medium or a water in oil emulsion, wherein the sand to be consolidated in said first location is spaced from a well bore wall, and the cement is of average particle size less than 10 microns, said slurry being substantially free of sand of larger size than the average size of sand in said location, to produce a mixture comprising said sand in said first location, water and cement, the slurry being injected into the formation to said location; (ii) passing a liquid hydrocarbon fluid into said location to displace from said location at least some of the cement from said mixture; and (iii) allowing the mixture to set to give a permeable consolidated sand.