Method of controlling particulate flowback in subterranean wells and introducing treatment chemicals

A method of treating a subterranean formation comprising the steps of:

• introducing a treatment fluid into a 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 comprising a polyamide 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 30 percent when tested at a level of 0.5% active material by weight over said particulate alone with water;
• admixing with at least a portion of said particulate in said treatment fluid a treatment chemical whereby at least a portion of said treatment chemical is contacted by said tackifying compound and at least partially coated therewith whereby the tackifying compound retards release of said treatment chemical in said treatment fluid;
• and
• depositing the tackifying compound coated particulates and the treatment chemical in the subterranean formation whereby upon flowing back fluid from the formation the tackifying compound coated treatment chemical is subsequently released within the subterranean formation to treat at least a portion of the formation or fluids in contact therewith.

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 comprising a treatment chemical which are at least partially coated with a liquid or solution of a non-hardening tackifying compound;
• introducing the fluid suspension into a subterranean formation through a wellbore;
• and
• depositing the fluid suspension in the formation whereupon flowing back fluid from the formation the tackifying compound retards movement of at least a portion of the particulate material from the formation into the wellbore and retards release of the treatment chemical within the fluid within at least a portion of the said formation.

A method of treating a subterranean formation penetrated by a wellbore and controlling fines migration in a particulate pack placed within said formation comprising the steps of:

• providing a fluid suspension including a mixture of a particulate material and another material comprising a treatment chemical which are at least partially coated with a liquid or solution of a tackifying compound;
• introducing the fluid suspension into a subterranean formation through a wellbore;
• and
• depositing the fluid suspension in the formation whereupon flowing back fluid from the formation the tackifying compound coated particulate retards movement of at least a portion of any fine particulate material moving to said wellbore from the formation and the tackifying compound coated upon said treatment chemical retards release of the treatment chemical within at least a portion of said formation.