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    Process for the preparation of fluid loss additive and gel breaker
    1.
    发明授权
    Process for the preparation of fluid loss additive and gel breaker 失效
    流体损失添加剂和凝胶破碎剂的制备方法

    公开(公告)号：US4986355A

    公开(公告)日：1991-01-22

    申请号：US353947

    申请日：1989-05-18

    申请人： Burton M. Casad ,  Charles R. Clark ,  Lisa A. Cantu ,  D. Philip Cords ,  Edward F. McBride

    发明人： Burton M. Casad ,  Charles R. Clark ,  Lisa A. Cantu ,  D. Philip Cords ,  Edward F. McBride

    IPC分类号： C09K8/508 ,  C09K8/62

    CPC分类号： C09K8/5086 ,  C09K8/62 ,  Y10S507/935

    摘要： A melted polymer of hydroxyacetic acid with itself or with other hydroxy-, carboxylic acid-, or hydroxycarboxylic acid-containing moieties is subjected to high shear and injected into an organic liquid which is inert to the polymer to form an organic liquid dispersion of very fine polymer particles. In one aspect the melted polymer is combined with the organic liquid and the combination is thereafter subjected to high shear to form the fine particle polymer dispersion. A dispersion agent may also be used to aid in dispersing the particles. The dispersion is used for fluid loss control and gel breaking in subterranean formations.

    摘要翻译： 将羟基乙酸与其本身或与其它含羟基，羧酸或羟基羧酸的部分熔融的聚合物经受高剪切并注入到对聚合物惰性的有机液体中以形成非常细的有机液体分散体 聚合物颗粒。 在一个方面，将熔融的聚合物与有机液体结合，然后将组合物进行高剪切以形成细颗粒聚合物分散体。 也可以使用分散剂来帮助分散颗粒。 分散体用于地下地层中的流体损失控制和凝胶破坏。

    Well treatment process
    3.
    发明授权
    Well treatment process 失效
    治疗过程良好

    公开(公告)号：US4957165A

    公开(公告)日：1990-09-18

    申请号：US368689

    申请日：1989-06-19

    申请人： Lisa A. Cantu ,  Marion W. Osborne ,  Edward F. McBride

    发明人： Lisa A. Cantu ,  Marion W. Osborne ,  Edward F. McBride

    IPC分类号： C09K8/10 ,  C09K8/62 ,  C09K8/88 ,  E21B43/26

    CPC分类号： C09K8/885 ,  C09K8/10 ,  C09K8/62 ,  E21B43/261 ,  Y10S507/925

    摘要： Hydroxyacetic acid condensation product is used as a fluid loss material in a well completion or workover process in which a fluid comprising a hydrolyzable aqueous gel is used. The hydroxyacetic acid condensation product degrades at formation conditions to provide hydroxyacetic acid which breaks the aqueous gel, thereby restoring full formation permeability without the need for separate addition of gel breaker.

    摘要翻译： 羟基乙酸缩合产物在完井或修井过程中用作流体损失材料，其中使用包含可水解水性凝胶的流体。 羟基乙酸缩合产物在形成条件下降解以提供羟基乙酸，其破坏水凝胶，从而恢复完全地层渗透性，而不需要单独加入凝胶破碎剂。

    Sulfonation process
    6.
    发明授权
    Sulfonation process 失效
    磺化过程

    公开(公告)号：US5117041A

    公开(公告)日：1992-05-26

    申请号：US612353

    申请日：1990-11-13

    申请人： Edward F. McBride

    发明人： Edward F. McBride

    IPC分类号： C08G63/688 ,  C08G63/91

    CPC分类号： C08G63/6888 ,  C08G63/918

    摘要： Allyl end-capped propylene terephthalate polyester oligomers are sulfonated in an aqueous system in the presence of a free radical initiator by a process in which only a part (about 15% to 40%) of the source of bisulfite is added at the start of the sulfonation step with the remainder being added later in that step, in such increments as will permit maintaining a clear single phase, to give sulfinate-containing sulfonated products, following which the sulfinate content is oxidized to give sulfonated end-capped propylene terephthalate polyester oligomers.

    摘要翻译： 烯丙基封端的对苯二甲酸丙二醇酯聚酯低聚物在自由基引发剂存在下，在含水体系中被磺化，其中只有一部分（约15％至40％）的亚硫酸氢盐源在 磺化步骤，其余部分在该步骤中稍后加入，允许保持澄清的单相，得到含亚磺酸盐的磺化产物，随后亚硫酸盐含量被氧化，得到磺化封端的对苯二甲酸丙二醇酯聚酯低聚物。