초록 ▼

A method of treating a formation with a well treatment fluid comprising a clay stabilizer comprising a polyamine ether before or during a well treatment such as cleanup, gravel packing, fracturing, or the like. The stabilizer can continue to inhibit fines migration in the treatment zone even after a

A method of treating a formation with a well treatment fluid comprising a clay stabilizer comprising a polyamine ether before or during a well treatment such as cleanup, gravel packing, fracturing, or the like. The stabilizer can continue to inhibit fines migration in the treatment zone even after an aqueous fluid without the stabilizer, e.g. a production fluid or injection fluid, displaces the original treatment fluid. When the stabilizer is used in a viscoelastic system (VES) with an acid blend component, the viscosity of the VES is essentially unchanged relative to the VES alone without the stabilizer.

대표청구항 ▼

We claim: 1. A method comprising:contacting a permeable treatment zone in fluid communication between a wellbore and a fluid reservoir with a saline treatment fluid comprising a poly(oxyalkylene)polyamine clay stabilizer for a period of time effective to inhibit fines migration in the treatment zone

We claim: 1. A method comprising:contacting a permeable treatment zone in fluid communication between a wellbore and a fluid reservoir with a saline treatment fluid comprising a poly(oxyalkylene)polyamine clay stabilizer for a period of time effective to inhibit fines migration in the treatment zone; and,thereafter displacing a second fluid through the treatment zone between the wellbore and the reservoir, wherein the second fluid entering the treatment zone comprises an aqueous phase essentially free of the clay stabilizer.