Hydrocarbon liquid and water dispersible particulate cement compositions
AssigneeHalliburton Company
InventorsLance E. Brothers, Jeffrey A. Dahl
Life of this patent
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Abstract
This invention relates to a dry, fine particle size hydraulic cement composition, which is directly dispersable in both water and a hydrocarbon liquid and to the use of said composition in oil well cementing operations and methods of terminating water flow in subterranean hydrocarbon producing formations.
Claims16
A dry, fine particle size particulate hydraulic cement composition which is directly dispersable in water and in a hydrocarbon liquid comprising:
- a fine particle size particulate hydraulic cement having deposited thereon a surfactant selected from the group consisting of:
- an aromatic sulfonate having the formula ##STR4## an aromatic sulfonate having the formula ##STR5## wherein R.sub.1 is a linear alkyl group having 12 carbon atoms or a linear alkyl group having from 16 to 24 carbon atoms, R.sub.2 and R.sub.3 are linear alkyl groups having 12 carbon atoms, X is an alkali or alkaline earth metal and n is 1 or 2,
- and further wherein the particles of said hydraulic cement have diameters no larger than about 30 microns and a Blaine Fineness no less than about 6000 square centimeters per gram.
- and still further wherein said surfactant is deposited on said hydraulic cement in an amount in the range of from about 0.2% to about 1% by weight of said cement composition.
A method of forming a hydrocarbon liquid cement slurry comprising mixing a relatively low viscosity hydrocarbon liquid with a dry, fine particle size particulate hydraulic cement composition, said cement composition being comprised of a fine particle size particulate hydraulic cement having deposited thereon a surfactant wherein said surfactant is selected from the group consisting of:
- an aromatic sulfonate having the formula ##STR6## an aromatic sulfonate having the formula ##STR7## wherein R.sub.1 is a linear alkyl group having 12 carbon atoms or a linear alkyl group having from 16 to 24 carbon atoms, R.sub.2 and R.sub.3 are linear alkyl groups having 12 carbon atoms, X is an alkali or alkaline earth metal and n is 1 or 2,
- said relatively low viscosity hydrocarbon liquid is selected from the group consisting of kerosene, diesel oil, mineral oil and lubricating oil,
- wherein the particles of said hydraulic cement have diameters no larger than about 30 microns and a Blaine Fineness no less than about 6000 square centimeters per gram.
A method of terminating the flow of water from a permeable zone or fracture in a hydrocarbon producing subterranean formation penetrated by a well bore comprising the steps of:
- (a) forming a cement slurry by mixing a relatively low viscosity hydrocarbon liquid with a dry, fine particle size hydraulic cement composition comprised of a fine particle size hydraulic cement having deposited thereon a surfactant;
- (b) introducing said cement slurry into said permeable zone or fracture by way of said well bore in a volume sufficient to form a cement plug therein when the cement in said slurry is contacted by water;
- and
- (c) maintaining said slurry in said zone or fracture for a time whereby said cement in said slurry is contacted by water in said zone or fracture and a water impermeable cement plug is formed therein,
- wherein said surfactant is selected from the group consisting of:
- an aromatic sulfonate having the formula ##STR8## an aromatic sulfonate having the formula ##STR9## wherein R.sub.1 is a linear alkyl group having 12 carbon atoms or a linear alkyl group having from 16 to 24 carbon atoms, R.sub.2 and R.sub.3 are linear alkyl groups having 12 carbon atoms, X is an alkali or alkaline earth metal and n is 1 or 2.
Dependencies are inferred from the claim text.