Method of using lignite grafted fluid loss control additives in cementing operations
AssigneeHalliburton Energy Services, Inc.
InventorsSam Lewis, Jiten Chatterji, Bobby King, Chad Brennels
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Abstract
Methods of cementing in a subterranean formation are provided. An exemplary embodiment comprises introducing a cement composition into a subterranean formation. The cement composition comprises water, a cement and a fluid loss control additive comprising a graft polymer. The graft polymer comprises a backbone comprising a lignite. The graft polymer further comprises grafted monomers selected from the group consisting of 2-acrylamido-2-methylpropanesulfonic acid, acrylamide, acrylic acid, vinylphosphonic acid, diallyldimethylammonium chloride and salts thereof.
Claims18
A method of cementing comprising:
- introducing a cement composition into a well bore having a bottom hole circulating temperature of at least about 500° F., the cement composition comprising:
- water;
- a cement;
- and
- a fluid loss control additive comprising a graft polymer, the graft polymer comprising:
- a backbone comprising a lignite;
- a first grafted monomer comprising at least one monomer selected from the group consisting of 2-acrylamido-2-methylpropanesulfonic acid, any salt thereof and any combination thereof;
- and
- a second grafted monomer comprising diallyldimethylammonium chloride.
A method of cementing comprising:
- introducing a cement composition into a subterranean formation, the cement composition comprising:
- water;
- a cement;
- and
- a fluid loss control additive comprising a graft polymer, the graft polymer comprising:
- a backbone comprising a lignite;
- a first grafted monomer comprising at least one monomer selected from the group consisting of 2-acrylamido-2-methylpropanesulfonic acid, any salt thereof and any combination thereof;
- and
- a second grafted monomer comprising at least one monomer selected from the group consisting of vinylphosphonic acid, any salt thereof and any combination thereof.
A method of cementing comprising:
- introducing a cement composition into a space between a pipe string and a subterranean formation, the cement composition comprising:
- water;
- a cement;
- and
- a fluid loss control additive comprising a graft polymer, the graft polymer comprising:
- a backbone comprising a lignite;
- a first grafted monomer comprising at least one monomer selected from the group consisting of 2-acrylamido-2-methylpropanesulfonic acid, any salt thereof and any combination thereof;
- a second grafted monomer comprising diallyldimethylammonium chloride;
- a third grafted monomer comprising acrylamide;
- and
- a fourth grafted monomer comprising at least one monomer selected from the group consisting of vinylphosphonic acid, any salt thereof and any combination thereof;
- and
- allowing the cement composition to set in the space between the pipe string and the subterranean formation.
Dependencies are inferred from the claim text.