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265 条记录 (耗时 0.017 秒)

    Process for the preparation of fluid loss additive and gel breaker
    61.
    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。

    Gel composition and method of treatment
    62.
    发明授权
    Gel composition and method of treatment 失效
    凝胶组成及治疗方法

    公开(公告)号：US4968442A

    公开(公告)日：1990-11-06

    申请号：US331405

    申请日：1989-03-30

    申请人： David O. Falk

    发明人： David O. Falk

    IPC分类号： C09K8/512

    CPC分类号： C09K8/512 ,  Y10S507/903 ,  Y10S507/921 ,  Y10S507/935

    摘要： A composition for treating a subterranean formation and a method of treatment. An aqueous gel composition is formed by mixing a carboxylate-containing polymer with a crosslinking agent comprised of chromic carboxylate. Ethylenediaminetetraacetic acid is incorporated as a single-component gel breaker. When introduced into a permeable formation, the solution forms a gel which makes the formation impermeable. After a predetermined period of time the gel breaker breaks the gel to a predetermined degree which restores partial or limited permeability to the formation.

    摘要翻译： 一种用于处理地层的组合物和一种处理方法。 通过将含羧酸盐的聚合物与由铬羧酸盐组成的交联剂混合形成含水凝胶组合物。 乙二胺四乙酸作为单组分凝胶破碎剂掺入。 当引入可渗透的地层时，溶液形成凝胶，使得地层不可渗透。 在预定时间段之后，凝胶破碎机将凝胶破裂到预定的程度，其恢复对地层的部分或有限的渗透性。

    Cross-linked polyvinyl alcohols and oil reservoir permeability control therewith
    63.
    发明授权
    Cross-linked polyvinyl alcohols and oil reservoir permeability control therewith 失效
    交联聚乙烯醇和油层渗透性控制

    公开(公告)号：US4896723A

    公开(公告)日：1990-01-30

    申请号：US369180

    申请日：1989-06-21

    申请人： Dennis H. Hoskin ,  Paul Shu

    发明人： Dennis H. Hoskin ,  Paul Shu

    IPC分类号： C09K8/88 ,  E21B43/24

    CPC分类号： C09K8/887 ,  E21B43/24 ,  Y10S507/903 ,  Y10S507/935

    摘要： A novel cross-linked polymer is obtained by cross-linking polyvinyl alcohol with a cross-linking agent which is a mixture of a phenolic component and an aldehyde or a mixture of a naphtholic component and an aldehyde. The resulting polymer is exceptionally thermally stable and, therefore, can be used as an effective permeability control agent in all enhanced oil recovery operations, including steam flooding.

    摘要翻译： 通过将聚乙烯醇与作为酚类成分和醛的混合物的交联剂或萘酚成分与醛的混合物交联，得到新的交联聚合物。 所得聚合物特别热稳定，因此可用作所有强化采油操作中的有效渗透控制剂，包括蒸汽驱。

    Cross-linking titanium & zirconium chelates & their use
    64.
    发明授权
    Cross-linking titanium & zirconium chelates & their use 失效
    交联钛和锆螯合物及其用途

    公开(公告)号：US4885103A

    公开(公告)日：1989-12-05

    申请号：US242113

    申请日：1988-09-09

    申请人： Donald E. Putzig ,  Kenneth C. Smeltz

    发明人： Donald E. Putzig ,  Kenneth C. Smeltz

    IPC分类号： C07F7/00 ,  C09K8/512 ,  C09K8/68

    CPC分类号： C09K8/685 ,  C07F7/006 ,  C09K8/512 ,  Y10S507/903 ,  Y10S507/935

    摘要： Water-soluble N,N-bis-(2-hydroxyethyl)-glycine/metal chelates represented by the formula: ##STR1## wherein R is H or alkyl (1-12C); M is Ti or Zr; k is a number in the range between 0 and 1, p is a number in the range between 1 and 2, and k+p=2 (in particular embodiments: k=1 and p=1; k=0 and p=2; and k=0.5 and p=1.5). The chelates can be used as cross-linking agents in hydraulic fracturing fluids and in gels that are used for selectively plugging permeable zones in subterranean formations or for plugging subterranean leaks.

    摘要翻译： 由下式表示的水溶性N，N-双（2-羟乙基） - 甘氨酸/金属螯合物：其中R是H或烷基（1-12C）; M是Ti或Zr; k是在0和1之间的范围内的数字，p是在1和2之间的范围内的数字，并且k + p = 2（在具体实施例中：k = 1和p = 1; k = 0和p = 2 ;和k = 0.5和p = 1.5）。 螯合物可用作水力压裂液和凝胶中的交联剂，其用于选择性地堵塞地层中的渗透区域或用于堵塞地下泄漏物。

    Gelable compositions and use thereof in steam treatment of wells
    66.
    发明授权
    Gelable compositions and use thereof in steam treatment of wells 失效

    公开(公告)号：US4845134A

    公开(公告)日：1989-07-04

    申请号：US6821

    申请日：1987-01-23

    申请人： Naim A. Mumallah ,  Peter H. Doe

    发明人： Naim A. Mumallah ,  Peter H. Doe

    IPC分类号： C09K8/592 ,  C09K8/88

    CPC分类号： C09K8/887 ,  C09K8/592 ,  Y10S507/902 ,  Y10S507/903 ,  Y10S507/935

    摘要： A gelable composition is provided which can be injected into a well prior to steam treatment of the well. The composition comprises water, a water-dispersible polymer, a water-dispersible first crosslinker and a water-dispersible second crosslinker, wherein the first and second crosslinkers have differing temperature responsive crosslinking characteristics over the temperature range of about 70.degree. F. to about 400.degree. F. so as to enable crosslinking of the polymer and gelation of the composition over substantially the entire temperature range. Injection of the composition into a "cold" well followed by steam treatment of the well causes the polymer to undergo a two stage crosslinking reaction which produces a particularly effective and stable gel in diverting steam from "thief zones" in the formation surrounding the well.

    High temperature profile modification agents and methods for using same
    69.
    发明授权
    High temperature profile modification agents and methods for using same 失效
    高温型材改性剂及其使用方法

    公开(公告)号：US4788228A

    公开(公告)日：1988-11-29

    申请号：US946265

    申请日：1986-12-24

    申请人： Roderick G. Ryles

    发明人： Roderick G. Ryles

    IPC分类号： C08J3/24 ,  C09K8/12 ,  C09K8/512 ,  E21B33/138 ,  C08F8/42 ,  E21B43/20

    CPC分类号： C08J3/24 ,  C09K8/12 ,  C09K8/512 ,  C08J2333/00 ,  Y10S507/903 ,  Y10S507/935

    摘要： A new and improved composition and method for profile modification of subterranean formations characterized by high reservoir temperatures and/or harsh brine conditions are disclosed. The new and improved profile modification agents comprise a gelable composition comprising:(a) water;(b) a water-thickening and crosslinkable amount of a water-dispersible copolymer comprising from about 1 to about 99 mol % of units derived from an N,N.sup.1 -dialkylacrylamide monomer copolymerized with from about 1 to about 99 mol % of units derived from acrylic acid or a salt thereof; and(c) an amount of a polyvalent metal sufficient to crosslink the copolymer to form a stable gel. The profile modification agents are effective to alter the permeability of preselected portions of an underground formation by forming strong gels which are stable in harsh brine at temperatures of up to about 120.degree. C. The composition and method are particularly adapted for use in enhanced oil recovery operations.Additionally, component (b) can be a water-dispersible terpolymer comprising from about 5 to about 75 mol percent of units derived from an N,N.sup.1 -dialkylacrylamide, from about 5 to about 35 mol percent of units derived from acrylic acid or salts thereof and from about 10 to about 90 mol percent of units derived from 2-acrylamido-2-methylpropanesulfonic acid or salts thereof.