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    • 1. 发明申请
    • METHOD OF SUBTERRANEAN FORMATION TREATMENT
    • 地下处理方法
    • US20110245113A1
    • 2011-10-06
    • US12752665
    • 2010-04-01
    • Alhad Phatak
    • Alhad Phatak
    • C09K8/80
    • C09K8/685C09K8/68C09K8/887C09K8/905C09K2208/26C09K2208/28C09K2208/32
    • A method of treating a subterranean formation with a xanthan-viscosified cesium formate brine wherein the pH and/or another characteristic selected from density, xanthan loading, sodium formate loading, potassium formate loading and combinations thereof are modified to delay solid hydrogel formation and maintain pumpability. Also disclosed is a method of delaying onset of solid hydrogel formation, in a gel comprising cesium formate brine viscosified with xanthan polymer, comprises introducing acid into the brine in an amount effective for a pH from 7 to 11, wherein the acid introduction is before, during or after xanthan viscosification and prior to hydrogel formation, wherein the hydrogel formation in the acidified gel occurs at a later time relative to the same gel at a natural pH.
    • 用黄原胶增稠的甲酸铯盐处理地下地层的方法,其中改变了pH和/或选自密度,黄原酸负载量,甲酸钠负载量,甲酸钾负载量及其组合的其它特征,以延迟固体水凝胶形成并维持泵送性 。 还公开了一种延迟固体水凝胶形成发生的方法,在包含用黄原胶聚合物粘合的甲酸铯盐的凝胶中,包括将酸引入盐水中,其用量为有效pH为7至11,其中酸引入之前, 在黄原胶增稠期间或之后,以及在形成水凝胶之前,其中酸化凝胶中的水凝胶形成在相对于相同凝胶的较后时间在天然pH下发生。
    • 3. 发明授权
    • Method of subterranean formation treatment
    • 地层处理方法
    • US08354360B2
    • 2013-01-15
    • US12752665
    • 2010-04-01
    • Alhad Phatak
    • Alhad Phatak
    • C09K8/80
    • C09K8/685C09K8/68C09K8/887C09K8/905C09K2208/26C09K2208/28C09K2208/32
    • A method of treating a subterranean formation with a xanthan-viscosified cesium formate brine wherein the pH and/or another characteristic selected from density, xanthan loading, sodium formate loading, potassium formate loading and combinations thereof are modified to delay solid hydrogel formation and maintain pumpability. Also disclosed is a method of delaying onset of solid hydrogel formation, in a gel comprising cesium formate brine viscosified with xanthan polymer, comprises introducing acid into the brine in an amount effective for a pH from 7 to 11, wherein the acid introduction is before, during or after xanthan viscosification and prior to hydrogel formation, wherein the hydrogel formation in the acidified gel occurs at a later time relative to the same gel at a natural pH.
    • 用黄原胶增稠的甲酸铯盐处理地下地层的方法,其中改变了pH和/或选自密度,黄原酸负载量,甲酸钠负载量,甲酸钾负载量及其组合的其它特征,以延迟固体水凝胶形成并维持泵送性 。 还公开了一种延迟固体水凝胶形成发生的方法,在包含用黄原胶聚合物粘合的甲酸铯盐的凝胶中,包括将酸引入盐水中,其用量为有效pH为7至11,其中酸引入之前, 在黄原胶增稠期间或之后,以及在形成水凝胶之前,其中酸化凝胶中的水凝胶形成在相对于相同凝胶的较后时间在天然pH下发生。
    • 4. 发明申请
    • METHOD OF WELL TREATMENT USING SYNTHETIC POLYMERS
    • 使用合成聚合物的井处理方法
    • US20120285688A1
    • 2012-11-15
    • US13103385
    • 2011-05-09
    • Alhad PhatakCarlos Abad
    • Alhad PhatakCarlos Abad
    • E21B43/16
    • C09K8/508C09K8/68C09K8/905C09K2208/30
    • A method for treating a subterranean formation, including estimating the solubility parameter of a monomer; selecting a solvent based on the parameter; forming a fluid comprising the monomer and solvent; and introducing the fluid to the formation, wherein the formation is about 350° F. or warmer. A method for treating a subterranean formation, including forming a fluid comprising the monomer and solvent, wherein the monomer comprises poly(2-hydroxyethyl methacrylate) and/or poly(2-hydroxyethyl acrylate, and wherein the solvent comprises zinc bromide or calcium bromide or both; and introducing the fluid to the formation, wherein the formation is about 350° F. or warmer.
    • 一种处理地下地层的方法,包括估算单体的溶解度参数; 根据参数选择溶剂; 形成包含单体和溶剂的流体; 并将流体引入地层,其中地层约350°F或更暖。 一种处理地下地层的方法,包括形成包含单体和溶剂的流体,其中所述单体包括聚(甲基丙烯酸2-羟乙酯)和/或聚(2-羟乙基丙烯酸酯),并且其中溶剂包括溴化锌或溴化钙或 两者;以及将流体引入地层,其中地层约为350°F或更暖。
    • 6. 发明申请
    • FORMATE SALTS FOR INCREASED STABILITY OF POLYACRYLAMIDE FLUIDS
    • 提高聚丙烯酰胺流体稳定性的方法
    • US20120111567A1
    • 2012-05-10
    • US12942120
    • 2010-11-09
    • Lijun LinAlhad PhatakLeiming LiCarlos Abad
    • Lijun LinAlhad PhatakLeiming LiCarlos Abad
    • E21B43/16C09K8/00
    • C08K7/14C09K8/685
    • Methods and apparatus for using a fluid within a subterranean formation, including forming a fluid comprising an acrylamide copolymer and a formate salt, and introducing the fluid to the subterranean formation, wherein a temperature of the formation is about 149° C. or warmer. Also, methods and apparatus for a fluid for use within a subterranean formation, including an acrylamide copolymer comprising polyacrylamide, a formate salt comprising potassium, and a crosslinker comprising zirconium. Additionally, methods and apparatus for using a fluid within in a subterranean formation, including forming a fluid comprising an acrylamide copolymer and a formate salt, and introducing proppant into the fluid to form a mixture, introducing the mixture to the subterranean formation, wherein a temperature of the formation is about 149° C. or warmer.
    • 在地层内使用流体的方法和装置,包括形成包含丙烯酰胺共聚物和甲酸盐的流体,并将流体引入地层,其中地层的温度为约149℃或更暖。 另外,用于在地层内使用的流体的方法和装置,包括包含聚丙烯酰胺的丙烯酰胺共聚物,包含钾的甲酸盐和包含锆的交联剂。 另外,用于在地下地层内使用流体的方法和装置,包括形成包含丙烯酰胺共聚物和甲酸盐的流体,并将支撑剂引入流体中以形成混合物,将混合物引入到地层中,其中温度 的形成约149°C或更暖。