Fluu00ecdo treatment of the well and the treatment process of wells

摘要

Fluu00ecdo treatment of the well and the treatment process of the wells.It is here disclosed the treatment of wells that covers the injection of the fluid treatment of the well with insoluble polymer polyol such as polyvinylalcohol (PVOH) here spread, the placement of the polymer insoluble in the hole or an adjacent formation, and subsequently the dissoluu00e7 To the polymer by the reduction of salinity and / or the increase of temperature in the vicinity of the deposition of the polymer.The process disclosed includes formation of the filter cake, control of leakage of fluids, drilling, fracturing and hydraulic transport assisted by fibers, when seeks the removal of polyol, at the end of treatment or after treatment.The process is also disclosed for of the polyol dissolved as displacing retarded systems in crosslinking polymers which acted in viscosity and in systems of surfactants viscoelu00e1sticos.Also disclosed are a well treatment fluids containing polyols insoluble amorphous or crystalline structure at least partially, and a composite with fibers of PVOH where the fibers are stabilized with respect to the dissolution by means of control of salinity.