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    • 23. 发明申请
    • Drill-In Fluids For Oil and Gas Reservoirs With High Carbonate Contents
    • 含有高碳酸盐含量的油气藏钻井液
    • US20100071957A1
    • 2010-03-25
    • US12606502
    • 2009-10-27
    • Tianping HuangJames B. CrewsJohn R. Willingham
    • Tianping HuangJames B. CrewsJohn R. Willingham
    • C09K8/02E21B21/00E21B7/00C09K8/035C09K8/28
    • C09K8/12C09K8/506C09K8/524C09K2208/26C09K2208/30
    • Compositions Including Relatively Low Reactivity Acids, Mixed with viscoelastic surfactants (VESs) and internal breakers may serve as drill-in fluids to open underground hydrocarbon reservoirs with carbonate contents of 10 wt % or above. The drill-in fluids have low viscosities in the drilling pipe. After the fluid flows out of the drill bit, the acids react with carbonates in the formation thereby increasing the pH of the drill-in fluids causing the VES to gel the fluid at the bottom of the hole and the downhole annulus between the drilling pipe and the formation rock. The viscosified drill-in fluid will reduce fluid loss and will carry no dissolved drilling debris to the surface. After drilling through the targeted formation, the internal breakers in the viscosified drill-in fluids will break down the fluids to permit their removal, and the well is ready to produce with very little or no near well bore damage.
    • 包含相对低反应性酸的组合物与粘弹性表面活性剂(VES)和内部破碎剂混合可用作钻入液体,以打开碳酸盐含量为10重量%或更高的地下储层。 钻孔液在钻井管中具有低粘度。 在流体流出钻头之后,酸与地层中的碳酸盐反应,从而增加钻入流体的pH,使得VES将孔底部的流体和钻井管和钻井孔之间的井下环空凝结 形成岩石。 粘稠钻井液将减少流体损失,并且不会在表面上携带溶解的钻屑。 在钻孔通过目标地层后,粘稠钻井液中的内部破碎机将分解流体以允许它们的移除,并且井准备好产生很少或没有接近井眼损坏。
    • 25. 发明授权
    • Solids suspension with nanoparticle-associated viscoelastic surfactant micellar fluids
    • 具有纳米颗粒相关粘弹性表面活性剂胶束液的固体悬浮液
    • US09556376B2
    • 2017-01-31
    • US12042439
    • 2008-03-05
    • Tianping HuangJames B. Crews
    • Tianping HuangJames B. Crews
    • C09K8/05C09K8/68
    • C09K8/05C09K8/665C09K8/68C09K8/80C09K2208/10C09K2208/30
    • An aqueous, viscoelastic fluid gelled with a viscoelastic surfactant (VES) may suspend solids such as proppants, gravel, drilling debris, waste solids and the like with an effective amount of a nano-sized additive including, but not necessarily limited to alkaline earth metal oxides, alkaline earth metal hydroxides, alkali metal oxides, alkali metal hydroxides, transition metal oxides, transition metal hydroxides, post-transition metal oxides, and post-transition metal hydroxides. The additives may also reduce the amount of VES required to maintain a given viscosity. These viscoelastic surfactant gelled aqueous fluids may be used as treatment fluids for subterranean hydrocarbon formations, such as in hydraulic fracturing, gravel packing and the like. The magnesium oxide, zinc oxide or other nanometer scale-sized additives are at a scale that may provide unique particle charges that use chemisorption, crosslinking and/or other chemistries to associate the micelles and suspend the solids.
    • 用粘弹性表面活性剂(VES)凝胶化的水性粘弹性流体可以用有效量的纳米尺寸添加剂来悬浮诸如支撑剂,砾石,钻屑,废物固体等固体,包括但不限于碱土金属 氧化物,碱土金属氢氧化物,碱金属氧化物,碱金属氢氧化物,过渡金属氧化物,过渡金属氢氧化物,过渡金属氧化物和过渡后金属氢氧化物。 添加剂还可以减少维持给定粘度所需的VES的量。 这些粘弹性表面活性剂胶凝的含水流体可以用作地下烃地层的处理流体,例如在水力压裂,砾石填充等中。 氧化镁,氧化锌或其他纳米级尺寸的添加剂的尺寸可以提供使用化学吸附,交联和/或其它化学物质来缔合胶束并悬浮固体的独特的颗粒电荷。
    • 28. 发明授权
    • Dual-functional breaker for hybrid fluids of viscoelastic surfactant and polymer
    • 用于粘弹性表面活性剂和聚合物混合流体的双功能断路器
    • US08383557B2
    • 2013-02-26
    • US12815796
    • 2010-06-15
    • Tianping HuangJames B. Crews
    • Tianping HuangJames B. Crews
    • C09K8/64E21B43/25
    • C09K8/64C09K8/516C09K8/536C09K8/602C09K8/68C09K2208/24C09K2208/26C09K2208/30
    • Incorporating water-based polymer breakers, such as oxidizers, enzymes and/or acids, into a mixture of an oil and oil-soluble surfactants creates an emulsion that can then perform as a dual-functional breaker for reducing the viscosity of hybrid fluids gelled with both a viscoelastic surfactant (VES) and a polymer. The outer phase of the dual-functional breaker emulsion is oil, e.g. a mineral oil, containing an oil-soluble surfactant that will, over time and with heat, break the VES portion of the gel. As it does so, the polymer breaker in the internal aqueous phase will be released to then break the polymer portion of the gel. The polymer breaker will not start to break the polymer gel before the oil-soluble surfactant starts to break the VES gel. The overall breaking using the emulsion is slower as compared to introducing the polymer breaker and the oil-soluble surfactant in a non-emulsified form.
    • 将诸如氧化剂,酶和/或酸的水基聚合物破碎剂掺入油和油溶性表面活性剂的混合物中产生乳液,然后可以将其作为双功能破乳剂进行,以降低混合流体的粘度 粘弹性表面活性剂(VES)和聚合物。 双功能破乳剂乳液的外相是油,例如油。 一种矿物油,含有油溶性表面活性剂,随着时间的推移和热量将会破坏凝胶的VES部分。 如此,内部水相中的聚合物破碎剂将被释放,然后破坏凝胶的聚合物部分。 在油溶性表面活性剂开始破坏VES凝胶之前,聚合物破乳剂不会开始破裂聚合物凝胶。 与以非乳化形式引入聚合物破乳剂和油溶性表面活性剂相比,使用乳液的整体破坏较慢。