Compositions and methods for cementing using elastic particles
AssigneeBJ Services Company
InventorsHarold D. Brannon, Christopher J. Stephenson, Robert L. Dillenbeck, Dan T. Mueller
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Abstract
Cement compositions including mixtures of substantially elastic material and cement that may be formulated exhibit reduced bulk volume shrinkage during curing as compared to conventional cement compositions. In one application, such cement compositions may be used for cementing in substantially closed system, such as the interior of a mold used for producing preformed concrete items.
Claims43
A method of cementing, comprising placing an uncured cement composition in a selected location and allowing said cement composition to cure to form a cured cement composition;
- wherein said uncured cement composition comprises a mixture of hydraulic cement and substantially elastic material, and wherein said substantially elastic material is present in said uncured cement composition in an amount effective to at least partially counteract volumetric shrinkage of said cement composition during said curing.
A method of cementing, comprising placing an uncured cement composition in a selected location and allowing said cement composition to cure to form a cured cement composition;
- wherein said uncured cement composition comprises a mixture of hydraulic cement and a particulate material;
- and wherein said particulate material is substantially elastic and comprises at least one of:
- a material having a Young's modulus of between about 500 psi and about 30,000,000 psi at in situ cementing conditions, or
- individual particles, each of said individual particles comprising two or more components, or
- a mixture thereof.
A method of cementing, comprising placing an uncured cement composition in a selected location and allowing said cement composition to cure to form a cured cement composition;
- wherein said uncured cement composition comprises a mixture of hydraulic cement and a particulate material, said particulate material comprising polystyrene divinylbenzene.
Dependencies are inferred from the claim text.