Control of particulate flowback in subterranean wells
AssigneeHalliburton Energy Services, Inc.
InventorsJim D. Weaver, James R. Stanford, Brahmadeo Dewprashad, Philip D. Nguyen
Life of this patent
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Abstract
The present invention provides a method of treating a subterranean formation with a particulate laden fluid whereby particulate flowback is reduced or prevented. The method includes the steps of providing a fluid suspension including a mixture of a particulate upon which at least a partial coating of a tackifying compound is formed as a result of admixture of the tackifying compound therewith, pumping the suspension into a subterranean formation and depositing the mixture within the formation whereby the tackifying compound retards movement of at least a portion of the particulate within the formation upon flow of fluids from the subterranean formation.
Claims21
A method of treating a subterranean formation comprising the steps of:
- introducing a particulate-containing fluid into a subterranean formation;
- admixing with at least a portion of said particulate in said fluid suspension a liquid or solution of a reactant capable of forming a tackifying compound whereby at least a portion of said particulate is at least partially coated by said reactant;
- depositing the tackifying compound reactant coated particulate in the subterranean formation and reacting with the reactant a multivalent ion source to form a substantially non-hardening tackifying compound whereby the tackifying compound coated particulate retards movement of at least a portion of the particulate within said formation upon the flowing back of fluid from the formation.
A method of treating a subterranean formation comprising the steps of:
- introducing a treatment fluid into a subterranean formation at a rate and pressure sufficient to create at least one fracture in said subterranean formation;
- admixing with at least a portion of said fluid, a particulate which is introduced into and deposited within said fracture;
- admixing with at least a portion of said particulate a liquid or solution of a tackifying compound produced by the reaction of at least one member selected from the group consisting of polyacids, polyorganophosphates, polyphosphonates, polysulfates, polycarboxylates and polysilicates and a multivalent ion whereby at least a portion of said particulate is at least partially coated by said compound such that the critical resuspension velocity of said at least partially coated particulate is increased by at least about 25 percent when tested at a level of 0.5% active material by weight over said particulate alone with water;
- depositing the tackifying compound coated particulate in the subterranean formation;
- and
- flowing back fluid from the formation whereby the tackifying compound coated particulate retards movement of at least a portion of the particulate within said formation.
A method of treating a subterranean formation penetrated by a wellbore comprising the steps of:
- providing a fluid suspension including a mixture of a particulate material and another material selected from the group of particles comprising metal, natural or synthetic polymers, ceramics and glass;
- introducing the fluid suspension into a subterranean formation through a wellbore;
- contacting said particulate with a tackifying compound produced by the reaction of a polyacid with a multivalent ion, said tackifying compound at least partially coating at least a part of said particulate material present in said fluid suspension;
- depositing the fluid suspension in the formation;
- and flowing back fluid from the formation whereby the tackifying compound material retards movement of at least a portion of the particulate material from the formation into the wellbore.
A method of treating a subterranean formation comprising the steps of:
- introducing a particulate-containing fluid into a subterranean formation;
- admixing with at least a portion of said particulate in said fluid suspension a liquid or solution of a tackifying compound comprising predominately a condensation reaction product of a dimer acid containing some trimer and higher oligomers and some monomer acids with a polyamine and a selected surfactant whereby at least a portion of said particulate is caused to be at least partially coated by said compound;
- depositing the tackifying compound coated particulate in the subterranean formation;
- and
- flowing back fluid from the formation whereby the tackifying compound coated particulate retards movement of at least a portion of the particulate within said formation.
Dependencies are inferred from the claim text.