High strength foamed well cement compositions and methods
AssigneeHalliburton Energy Services, Inc.
InventorsJiten Chatterji, Bobby J. King, Frank Zamora, Clyde R. Anderson, Billy J. Bennett, Roger S. Cromwell
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Abstract
High strength foamed well cement compositions and methods of cementing subterranean zones penetrated by well bores are provided. The foamed well cement compositions are basically comprised of a hydraulic cement, hydrophilic fibers, water sufficient to form a pumpable slurry, a mixture of foaming and foam stabilizing surfactants and sufficient gas to foam the slurry.
Claims16
An improved method of cementing in a subterranean zone penetrated by a well bore comprising the steps of:
- (a) introducing a foamed cement composition into said subterranean zone by way of said well bore, said foamed cement composition being comprised of a hydraulic cement, hydrophilic fibers, water, at least one foaming and foam stabilizing surfactant and a gas;
- and
- (b) allowing said foamed cement composition to set into a high strength, resilient, ductile and tough foamed cement mass in said zone.
An improved method of cementing a pipe string in a well bore using a light weight foamed cement composition comprising the steps of:
- (a) preparing a foamed cement composition having a density in the range of from about 10 to about 14 pounds per gallon comprising a hydraulic cement, hydrophilic fibers, water, a mixture of foaming and foam stabilizing surfactants and a gas;
- (b) pumping said foamed cement composition into the annulus between said pipe string and the walls of said well bore;
- and
- (c) allowing said cement composition to set into a high strength, resilient, ductile and tough foamed cement mass in said annulus.
Dependencies are inferred from the claim text.