Composition and method for controlling precipitation when acidizing wells
    11.
    发明授权
    Composition and method for controlling precipitation when acidizing wells 失效
    酸化井控制沉淀物的组成和方法

    公开(公告)号:US06225261B1

    公开(公告)日:2001-05-01

    申请号:US08073370

    申请日:1993-06-07

    IPC分类号: C09K300

    摘要: A composition and method for acidizing a formation in the presence of ferric ion, free sulfur and/or sulfides is disclosed. The composition employs a ferric ion reducing agent and a sulfide reactant separately or in combination. The ferric ion reducing agent is a thioalkyl acid. The sulfide reactant compounds include &agr;-diketones and saturated and &agr;-unsaturated cyclic ketones. In another aspect, the reducing activity of the thioalkyl acid is accelerated by the presence of a catalytic quantity of a compound or mixture of compounds which yield in acid solution cuprous ion, cupric ion or combinations thereof with iodide ion.

    摘要翻译: 公开了一种在铁离子,游离硫和/或硫化物存在下酸化地层的组合物和方法。 该组合物分别或组合使用三价铁离子还原剂和硫化物反应物。 铁离子还原剂是硫代烷基酸。 硫化物反应物化合物包括α-二酮和饱和和α-不饱和环酮。 在另一方面,硫代烷基酸的还原活性通过催化量的化合物或化合物的混合物的存在而加速,其在酸性溶液中产生亚铜离子,铜离子或其与碘离子的组合。

    Composition and method for controlling precipitation when acidizing wells
    12.
    发明授权
    Composition and method for controlling precipitation when acidizing wells 失效
    酸化井控制沉淀物的组成和方法

    公开(公告)号:US5622919A

    公开(公告)日:1997-04-22

    申请号:US556679

    申请日:1995-11-13

    CPC分类号: C09K8/74 C09K8/528 Y10S585/95

    摘要: A composition and method for acidizing a formation in the presence of ferric ion, free sulfur and/or sulfides is disclosed. The composition employs a ferric ion reducing agent and a sulfide reactant separately or in combination. The ferric ion reducing agent is a thioalkyl acid. The sulfide reactant compounds include .alpha.-diketones and saturated and .alpha.-unsaturated cyclic ketones. In another aspect, the reducing activity of the thioalkyl acid is accelerated by the presence of a catalytic quantity of a compound or mixture of compounds which yield in acid solution cuprous ion, cupric ion or combinations thereof with iodide ion.

    摘要翻译: 公开了一种在铁离子,游离硫和/或硫化物存在下酸化地层的组合物和方法。 该组合物分别或组合使用三价铁离子还原剂和硫化物反应物。 铁离子还原剂是硫代烷基酸。 硫化物反应物化合物包括α-二酮和饱和和α-不饱和环酮。 在另一方面,硫代烷基酸的还原活性通过催化量的化合物或化合物的混合物的存在而加速,其在酸性溶液中产生亚铜离子,铜离子或其与碘离子的组合。

    Annular isolators for expandable tubulars in wellbores
    13.
    发明授权
    Annular isolators for expandable tubulars in wellbores 有权
    在井筒中用于可膨胀管的环形隔离器

    公开(公告)号:US07299882B2

    公开(公告)日:2007-11-27

    申请号:US11624747

    申请日:2007-01-19

    IPC分类号: E21B33/12

    摘要: The present disclosure addressed apparatus and methods for forming an annular isolator in a borehole after installation of production tubing. Annular seal means are carried in or on production tubing as it is run into a borehole. In conjunction with expansion of the tubing, the seal is deployed to form an annular isolator. An inflatable element carried on the tubing may be inflated with a fluid carried in the tubing and forced into the inflatable element during expansion of the tubing. Reactive chemicals may be carried in the tubing and injected into the annulus to react with each other and ambient fluids to increase in volume and harden into an annular seal. An elastomeric sleeve, ring or band carried on the tubing may be expanded into contact with a borehole wall and may have its radial dimension increased in conjunction with tubing expansion to form an annular isolator.

    摘要翻译: 本公开涉及在安装生产管道之后在钻孔中形成环形隔离器的装置和方法。 当环形密封装置进入钻孔时,环形密封装置被运送在生产管道中或上。 结合管道的膨胀,将密封件展开以形成环形隔离器。 管道上承载的可膨胀元件可以在管道中承载的流体膨胀,并在管道膨胀期间被迫进入可充气元件。 反应性化学物质可以在管道中携带并注入到环形空间中以相互反应并且环境流体增加体积并硬化成环形密封。 管道上承载的弹性体套筒,环或带可以膨胀成与钻孔壁接触,并且可以使其径向尺寸与管道膨胀一起增加以形成环形隔离器。

    Electron transfer system for well acidizing compositions and methods
    15.
    发明授权
    Electron transfer system for well acidizing compositions and methods 失效
    良好酸化组合物和方法的电子转移系统

    公开(公告)号:US06653260B2

    公开(公告)日:2003-11-25

    申请号:US10006340

    申请日:2001-12-07

    IPC分类号: C09K300

    摘要: An acidizing composition and a method of acidizing a hydrocarbon bearing subterranean formation in the presence of ferric ions are provided. The acidizing composition includes a mineral acid solution, an electron donor agent, a primary electron transfer agent and a secondary electron transfer agent. The primary electron transfer agent is a source of vanadium ions. The secondary electron transfer agent is a source of iodide ion or iodine. The electron donor agent and primary and secondary electron transfer agents function together to reduce ferric ion present in the mineral acid solution to ferrous ion which in turn prevents ferric hydroxide and/or free sulfur from precipitating out of the solution and reduces the formation of sludge in crude oil in the formation.

    摘要翻译: 提供酸化组合物和在三价铁存在下酸化含烃地层的方法。 酸化组合物包括无机酸溶液,电子给体试剂,一次电子转移剂和二次电子转移剂。 一次电子转移剂是钒离子的来源。 二次电子转移剂是碘离子或碘的来源。 电子给体试剂和一次电子转移剂和二次电子转移剂一起起作用以将无机酸溶液中存在的铁离子还原成亚铁离子,从而防止氢氧化铁和/或游离硫从溶液中沉淀出来并减少污泥形成 原油在形成。

    Metal corrosion inhibited organic acid compositions
    17.
    发明授权
    Metal corrosion inhibited organic acid compositions 失效
    金属腐蚀抑制有机酸组成

    公开(公告)号:US5916484A

    公开(公告)日:1999-06-29

    申请号:US855622

    申请日:1997-05-13

    摘要: By the present invention, improved metal corrosion inhibited aqueous organic acid compositions and methods are provided. The compositions are basically comprised of water, an organic acid, a corrosion inhibitor comprising at least one rosin amine derivative and a low toxicity corrosion inhibitor intensifier selected from the group consisting of thioglycolic acid and derivatives thereof.

    摘要翻译: 通过本发明,改进的金属腐蚀抑制含水有机酸组合物和方法。 组合物基本上由水,有机酸,包含至少一种松香胺衍生物的腐蚀抑制剂和选自巯基乙酸及其衍生物的低毒性缓蚀剂增强剂组成。

    Corrosion inhibited well acidizing compositions and methods
    19.
    发明授权
    Corrosion inhibited well acidizing compositions and methods 失效
    腐蚀抑制了良好的酸化组合物和方法

    公开(公告)号:US5763368A

    公开(公告)日:1998-06-09

    申请号:US655539

    申请日:1996-05-30

    IPC分类号: C09K8/54 C23F11/04 C09K7/00

    摘要: The present invention provides corrosion inhibited well acidizing compositions and methods of using the compositions to acidize wells. The compositions basically comprise an aqueous acid solution, a corrosion inhibitor comprising at least one quaternary ammonium compound and a corrosion inhibitor intensifier comprised of aliphatic carboxylic acids, crude tall oil, tall oil fatty acids, rosin acids and mixtures thereof.

    摘要翻译: 本发明提供腐蚀抑制良好的酸化组合物和使用该组合物来酸化孔的方法。 组合物基本上包含酸性水溶液,包含至少一种季铵化合物的腐蚀抑制剂和由脂族羧酸,粗妥尔油,妥尔油脂肪酸,松香酸及其混合物组成的缓蚀剂增强剂。

    Quaternary ammonium compounds useful for inhibiting metal corrosion
    20.
    发明授权
    Quaternary ammonium compounds useful for inhibiting metal corrosion 失效
    用于抑制金属腐蚀的季铵化合物

    公开(公告)号:US5756004A

    公开(公告)日:1998-05-26

    申请号:US855049

    申请日:1997-05-13

    IPC分类号: C09K8/54 C23F11/04 C09K7/00

    摘要: The present invention provides improved quaternary ammonium compounds useful as metal corrosion inhibitors in aqueous acid solutions, methods of preparing the compounds, metal corrosion inhibited aqueous acid solutions containing the compounds and methods of protecting metal surfaces from acid corrosion using the compounds. The compounds are prepared by contacting the still bottoms residue produced in the distillation of quinoline from coal tar with oxygen to oligomerize aromatic amines contained therein and then reacting the oligomerized amines with a benzylhalide.

    摘要翻译: 本发明提供改进的季铵化合物,其用作酸性水溶液中的金属腐蚀抑制剂,制备化合物的方法,金属腐蚀抑制含有该化合物的酸性水溶液以及使用该化合物保护金属表面免受酸腐蚀的方法。 该化合物是通过使来自煤焦油的喹啉蒸馏产生的残余残留物与氧气接触而使其中所含的芳族胺低聚,然后使低聚胺与苄基卤反应来制备。