초록 ▼

The present invention provides a method of treating a wellbore penetrating a subterranean formation with a treatment fluid whereby fine particulate flowback is reduced or prevented. The method includes the steps of providing a fluid suspension including a mixture of a particulate coated with a tacki

The present invention provides a method of treating a wellbore penetrating a subterranean formation with a treatment fluid whereby fine particulate flowback is reduced or prevented. The method includes the steps of providing a fluid suspension including a mixture of a particulate coated with a tackifying compound, 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 any fine particulate within the formation upon flow of fluids from the subterranean formation through the wellbore. Alternatively, the tackifying compound may be introduced into a subterranean formation in a diluent containing solution to deposit upon previously introduced particulates to retard movement of such particulates and any fines subject to flow with production of fluids from the subterranean formation.

대표청구항 ▼

[ What is claimed is:] [5.] A method of treating a subterranean formation to control fines migration comprising the steps of:introducing a treatment fluid into a subterranean formation through a wellbore at a rate and pressure sufficient to create at least one fracture in said formation;admixing wit

[ What is claimed is:] [5.] A method of treating a subterranean formation to control fines migration comprising the steps of:introducing a treatment fluid into a subterranean formation through a wellbore at a rate and pressure sufficient to create at least one fracture in said formation;admixing with at least a portion of said fluid, a particulate which is introduced into and subsequently deposited within said fracture;admixing with at least a portion of said particulate an effective amount of a liquid or solution of a tackifying compound whereby at least a portion of said particulate is at least partially coated by said compound such that the continuous critical resuspension velocity of said at least partially coated particulate is increased by in excess of about 30 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; andflowing back fluid from the formation whereby the tackifying compound coated particulate retards movement of at least a portion of any fine particulate flowing back to said wellbore within said formation by adhering said fines to said coated particulate. [14.] A method of treating a subterranean formation penetrated by a wellbore to control fines migration to said 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 which are at least partially coated with an effective amount of a liquid or solution of a tackifying compound;introducing the fluid suspension into a subterranean formation through a wellbore;depositing the fluid suspension in the formation; andflowing back fluid from the formation through the tackifying compound coated material whereby the tackifying compound material retards movement of at least a portion of any fine particulate material moving to said wellbore from the formation by adhering said fines to said coated particulate.