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US 6,616,751 B1Granted
Water-selective cementing composition
AssigneeSchlumberger Technology Corporation
InventorsPierre Maroy, Jack Maberry
Life of this patent
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Abstract
A cementing composition comprising a hydraulic cement powder dispersed in a solvent that is miscible both with water and hydrocarbons to make a slurry. The cement powder can be made up simply of hydraulic cement materials or can be a mixture of such materials with particles that are inert or reactive with cement. The composition can also include surfactants or retarders. The composition is used to plug water production in a well while leaving hydrocarbon production unaffected.
Claims24
A cementing composition comprising a slurry of
- a hydraulic cement powder containing at least one hydraulic cement;
- and
- a solvent that is miscible both in hydrocarbons and water;
- wherein the solids content of the mixture is 15% to 65% by volume.
1 more element
Dependencies are inferred from the claim text.