A method is disclosed for using aqueous VES-based gravel carrier fluids in gravel packing operations using screens and shunt tubes that have been run into a well completed with an oil-based mud. With this method, the previously necessary but undesirable steps of first running in a perforated liner and...http://www.google.es/patents/US6883608?utm_source=gb-gplus-sharePatente US6883608 - Gravel packing method
