A viscous aqueous high density well treatment fluid composition stable at high temperature containing a surfactant and inorganic salts is described. Methods of preparing the fluid and increasing the stability and viscosity of the fluid are given. The fluid is useful for wellbore cleanout, hydraulic fracturing,...http://www.google.es/patents/US20030236174?utm_source=gb-gplus-sharePatente US20030236174 - Viscoelastic Surfactant Fluids Stable at High Brine Concentration and Methods of Using Same
Viscoelastic Surfactant Fluids Stable at High Brine Concentration and ...
Número de solicitud: 10/249,830 Número de publicación: US 2003/0236174 A1 Fecha de presentación: 9 May 2003 Patente emitida: US7148185 ( Fecha de emisión 12 Dic 2006)
