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    • 52. 发明申请
    • Foamed viscoelastic surfactants
    • 发泡粘弹性表面活性剂
    • US20060148660A1
    • 2006-07-06
    • US11334158
    • 2006-01-17
    • Yiyan ChenJesse Lee
    • Yiyan ChenJesse Lee
    • C09K8/60
    • C09K8/703C09K2208/30
    • A method for increasing the foam stability of foams made with cationic, zwitterionic, and amphoteric viscoelastic surfactant fluid systems by adding an effective amount of an amphiphilic polymeric foam stabilizer containing at least one portion that is a partially hydrolyzed polyvinyl ester or partially hydrolyzed polyacrylate. The foam stabilizer allows foams to be used at temperatures at which the unfoamed fluids would not have stable viscosity, and allows use of lower viscoelastic surfactant concentrations in the liquid phase. Preferred surfactants are betaines and quaternary amines. The fluids are useful in oilfield treatments, for example fracturing and gravel packing.
    • 通过添加有效量的含有至少一部分部分水解的聚乙烯酯或部分水解的聚丙烯酸酯的两亲性聚合物泡沫稳定剂来提高由阳离子,两性离子和两性粘弹性表面活性剂流体体系制备的泡沫的泡沫稳定性的方法。 泡沫稳定剂允许泡沫在未发泡流体不具有稳定粘度的温度下使用,并且允许在液相中使用较低的粘弹性表面活性剂浓度。 优选的表面活性剂是甜菜碱和季胺。 这些流体可用于油田处理,例如压裂和砾石填充。
    • 55. 发明授权
    • Extended-span and alternatively-shaped arch bridge and construction method therefor
    • 大跨度和交替形拱桥及其施工方法
    • US08997292B2
    • 2015-04-07
    • US14347508
    • 2011-09-30
    • Yong LiYiyan ChenMin LiShuai GuoFangfang Xiao
    • Yong LiYiyan ChenMin LiShuai GuoFangfang Xiao
    • E01D4/00E01D6/02E01D21/00E01D12/00
    • E01D4/00E01D6/02E01D12/00E01D21/00
    • A large-span and special-shaped arch bridge, comprising a main girder (2), a center abutment (11) served as a central bearing point and two auxiliary abutments (12,13) served as bearing points at two ends, wherein further comprising an arch-axis combination (3) and two arch-axis bending beams (4,5) presented as arcs projected upwards, the arch-axis combination being built on the center abutment (11) with two ends connected to the inner ends of the two arch-axis bending beams (4,5), the outer ends of the two arch-axis bending beams (4,5) being built on the two auxiliary abutments (12,13), the two arch-axis bending beams (4,5) being connected to the main girder (2) via a plurality of inhaul cables. A method for constructing said arch bridge is also disclosed. Through the dual-arch axis of two arch-axis bending beams, the bending strength of the cross-section of the arch bridge is significantly increased, the bending moment of the cross-section of the arch at the central bearing point is decreased, the vertical displacement at the haunch of the arch is lesser, and the deformation of the main girder is reduced, thus the force of the entire bridge is more reasonable, the construction cost can effectively be reduced and the construction period can be shortened.
    • 一种大跨度和特殊形状的拱桥,包括主梁(2),用作中心轴承点的中心支座(11)和两端用作轴承点的两个辅助支座(12,13),其中进一步 包括拱形轴组合(3)和两个拱形弯曲梁(4,5),其呈现为向上突出的弧形,所述拱形轴组合构造在中心支座(11)上,两端连接到 两个拱形弯曲梁(4,5),两个拱形弯曲梁(4,5)的外端构造在两个辅助支座(12,13)上,两个拱形弯曲梁 4,5)通过多条通路电缆连接到主梁(2)。 还公开了一种用于构造所述拱桥的方法。 通过两个拱轴弯曲梁的双拱轴,拱桥横截面的弯曲强度显着增加,中心轴承点拱弧截面的弯矩减小, 拱形竖立位移较小,主梁变形减小,整座桥梁的力量更为合理,施工成本可有效降低,施工期可缩短。
    • 58. 发明授权
    • System, method and apparatus for enhancing wellbore treatment fluid flexibility
    • 用于增强井眼处理液灵活性的系统,方法和装置
    • US08397816B2
    • 2013-03-19
    • US13398120
    • 2012-02-16
    • Carlos AbadHemant K. LadvaLijun LinYiyan Chen
    • Carlos AbadHemant K. LadvaLijun LinYiyan Chen
    • E21B43/22
    • E21B43/24C09K8/03E21B21/06Y10S507/904Y10T137/85978
    • A method includes performing a chemical process to create a chemical product and an amount of heat, and transferring the heat to a first fluid. The method further includes hydrating a polymer in the first fluid, and adding the chemical product from the chemical process to the first fluid to create a treatment fluid. The method further includes diluting the treatment fluid with respect to at least one constituent of the treatment fluid. The method includes treating a formation of interest in a wellbore with the treatment fluid. The method includes changing a formulation of the treatment fluid during the treating. The method also includes extending the treating beyond a design amount, or ending the treatment before the design amount and preserving some reagents of the chemical process.
    • 一种方法包括执行化学过程以产生化学产品和一定量的热量,并将热量传递给第一流体。 该方法还包括将第一流体中的聚合物水合,并将化学产物从化学过程加入到第一流体中以产生处理流体。 该方法还包括相对于处理流体的至少一种成分稀释处理流体。 该方法包括用处理流体处理在井眼中的感兴趣的形成。 该方法包括在处理期间改变处理液的配方。 该方法还包括将处理延伸超过设计量,或在设计量之前结束处理并保留化学过程的一些试剂。
    • 60. 发明授权
    • System, method and apparatus for enhancing wellbore treatment fluid flexibility
    • 用于增强井眼处理液灵活性的系统,方法和装置
    • US08322410B2
    • 2012-12-04
    • US13398094
    • 2012-02-16
    • Carlos AbadHemant K. LadvaLijun LinYiyan Chen
    • Carlos AbadHemant K. LadvaLijun LinYiyan Chen
    • E21B43/12
    • E21B43/24C09K8/03E21B21/06Y10S507/904Y10T137/85978
    • An apparatus including at least four different modules, the first module being a treatment conditions module structured to interpret a specified pumping rate and a specified salt concentration. The second is a hydration requirements module structured to determine at least one of a hydration vessel fluid volume and a specified temperature in response to the specified pumping rate. The third is a dynamic brine generation module structured to control a flow rate of a first fluid, at least one of a clay stabilizer precursor, an acid precursor and a base precursor; and a polymer material into a hydration vessel in response to the specified salt concentration and the at least one of the hydration vessel fluid volume and the specified temperature. The fourth is a treatment fluid flow module structured to control a flow rate of a treatment fluid from the hydration vessel in response to the specified pumping rate.
    • 一种包括至少四个不同模块的装置,所述第一模块是结构化以解释指定的泵送速率和指定的盐浓度的处理条件模块。 第二个是水合要求模块,其被构造成响应于指定的泵送速率来确定水合容器流体体积和指定温度中的至少一个。 第三是动态盐水产生模块,其被构造成控制第一流体,粘土稳定剂前体,酸前体和碱前体中的至少一种的流速; 以及响应于指定的盐浓度和水合容器流体体积和指定温度中的至少一个,将聚合物材料转化成水合容器。 第四是处理流体流动模块,其被构造成响应于指定的泵送速率来控制来自水化容器的处理流体的流速。