Methods of terminating water flow in a subterranean formation
AssigneeHalliburton Energy Services, Inc.
InventorRichard J. Curtice
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Abstract
This invention relates to methods of using environmentally friendly cementitious compositions for terminating water flow in a subterranean formation such as in a fresh water zone or water aquifer. Preferred compositions of the present invention include a hydraulic cementitious material such as Portland cement, a viscosifying agent such as bentonite which increases the viscosity of the composition in the presence of water, and a vegetable oil.
Claims21
A method of terminating water flow in a subterranean formation comprising the steps of:
- placing within the subterranean formation a volume of a cementitious composition comprising a hydraulic cementitious material, a viscosifying agent which effectively increases the viscosity of the composition in the presence of water, and a vegetable oil;
- contacting the composition with water from the subterranean formation;
- and
- allowing the composition to set therein.
A method of terminating water flow through a space in a well bore comprising the steps of:
- placing within the space a volume of a cementitious composition, said composition comprising a hydraulic cementitious material, a viscosifying agent which effectively increases the viscosity of the composition in the presence of water, and a vegetable oil;
- permitting the volume to penetrate into the space;
- contacting the volume with water;
- and
- maintaining the volume in the space for a time sufficient to enable the composition to set therein.
A method of terminating water flow in a subterranean formation comprising the steps of:
- placing within the subterranean formation a volume of a cementitious composition comprising Portland cement, bentonite, and a vegetable oil;
- contacting the composition with water from the subterranean formation;
- and
- allowing the composition to set therein.
Dependencies are inferred from the claim text.