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The present invention provides processes for filling gaps and voids generated or encountered in gas and oil drilling operations or for geo- stabifization with polychloroprene latex which has been coagulated in a controlled fashion. The inventive process involves at least partially filling a gap or cavity in the earth with polychloroprene latex which becomes coagulated after a specific amount of time by at least one curing agent selected from a polyisocyanate, a blocked polyisocyanate, an acid, a salt, and a gas.