Methods of cementing with lightweight cement compositions
AssigneeHalliburton Energy Services, Inc.
InventorsDavid S. Kulakofsky, Pedro Pulido, Raul Bonifacio, Octavio Araujo Morales
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Abstract
Foamed cement compositions comprising density reducing additives and methods of making and using the same are disclosed. In one embodiment, a method of cementing is disclosed. The method of cementing comprises preparing a base cement composition comprising a cement, a water, and a density reducing additive, wherein the base cement composition comprises a base density. The method further comprises introducing a gas to the base cement composition to provide a cement composition having a density less than the base density and allowing the cement composition to set.
Claims20
A method of cementing, comprising:
- preparing a base cement composition comprising a cement, a water, and a density reducing additive, wherein the base cement composition comprises a base density;
- introducing a gas to the base cement composition to provide a cement composition having a density less than the base density;
- and
- allowing the cement composition to set,
- wherein the cement composition is prepared by:
- selecting a target density of the cement composition, wherein the target density is about the density of the cement composition;
- forming the base cement composition having the base density greater than the target density by a density factor;and
- adding a sufficient amount of the gas to the base cement composition to form the cement composition having about the target density, and
- wherein the density factor is from about 1.01 to about 1.4.
A method of cementing, comprising:
- preparing a base cement composition comprising a cement, a water, and a density reducing additive, wherein the base cement composition comprises a base density;
- introducing a gas to the base cement composition to provide a cement composition having a density less than the base density;and
- allowing the cement composition to set,
- wherein the cement composition is placed in a wellbore, and
- wherein the density is less than about a fracture gradient of the wellbore.
Dependencies are inferred from the claim text.