The present invention provides viscoelastic fluids that contain nanotube structures that may be used advantageously as oilfield stimulation fluids in many different applications, most particularly as a fracturing fluid. Viscoelastic fluid compositions of the present invention include an aqueous medium, a viscoelastic surfactant, an organic or inorganic acids, or salt thereof, organic acid salts, inorganic salts, and a nanotube component. The invention is also called to a methods of treating a subterranean well bores in which the viscoelastic fluid is injected into the wellbore to perform operations such as fracturing, drilling, acid fracturing, gravel placement, removing scale, matrix acidizing, and removing mud cake. Further, a method of preparing a nanotube viscoelastic fluid comprising the steps of effectively mixing a carbon nanotube component into a viscoelastic fluid, and sonicating the mixture in order to incorporate the carbon nanotube component is claimed.
本发明提供了含有纳米管结构的粘弹性流体,可在许多不同应用中有利地用作油田刺激流体,特别是用作压裂液。本发明的粘弹性流体组合物包括
水介质、粘弹性表面活性剂、有机酸或
无机酸或其盐、有机酸盐、
无机盐和纳米管成分。本发明还涉及一种处理地下井孔的方法,在该方法中,粘弹性流体被注入井孔,以执行压裂、钻井、酸性压裂、放置砾石、清除
水垢、基质酸化和清除泥饼等操作。此外,还要求提供一种制备纳米管粘弹性流体的方法,该方法包括以下步骤:将碳纳米管成分有效地混合到粘弹性流体中,并对混合物进行超声处理,以便加入碳纳米管成分。