Suspensions of fracture can be stored containing media weight ultralight in vehicles based on xanthan gum and process for using the same

摘要

"Suspensions of fracture can be stored containing media weight ultralight in vehicles based on xanthan gum and process for using the same.The present invention relates to a suspension can be stored for the treatment of a subterranean formation which contains a particulate light weight (ULW) and a fluid vehicle of xanthan gum or a variation of xanthan, a polysaccharide, and water. The suspension exhibits a high viscosity at low shear rates and does not appear to undergo separation for at least a week.The proportion of weight of xanthan polysaccharide: the suspension which can be stored is between approximately 8: 1 to approximately 1: 8. Before the introduction of the suspension in the formation, a foaming agent may be added, preferably in an amount sufficient to produce a quality of foam between approximately 30 and approximately 98.