This invention relates to a wellbore treatment fluid and a method of enhancing wellbore treatment fluids to increase efficiency and productivity of wells. More specifically this invention provides methods for enhancing the thermal stability of wellbore treatment fluids such as drill-in, completion, work-over,...http://www.google.com.au/patents/US6489270?utm_source=gb-gplus-sharePatent US6489270 - Methods for enhancing wellbore treatment fluids
