Methods of reducing precipitation from acid solutions
    1.
    发明授权
    Methods of reducing precipitation from acid solutions 失效
    减少酸溶液析出的方法

    公开(公告)号:US5264141A

    公开(公告)日:1993-11-23

    申请号:US895316

    申请日:1992-06-08

    IPC分类号: C09K8/528 E21B43/27

    CPC分类号: C09K8/528 Y10S507/934

    摘要: Methods and compositions for reducing the precipitation of metal sulfides from acid solutions are provided. The methods basically comprise reducing the precipitation of metal sulfide compounds from an aqueous acid solution when the solution dissolves sulfide and metal ions by combining at least one oxime with the acid solution in an amount whereby the oxime preferentially reacts with sulfide ions in the solution and thereby prevents the sulfide ions from reacting with metal ions therein.

    摘要翻译: 提供了用于从酸溶液中还原金属硫化物沉淀的方法和组合物。 该方法基本上包括当溶液通过将至少一种肟与酸溶液结合而溶解硫化物和金属离子时,从酸性溶液中降低金属硫化物化合物的沉淀,其中肟优先与溶液中的硫化物离子反应, 防止硫化物离子与其中的金属离子反应。

    Methods for estimating properties of a subterranean formation and/or a fracture therein
    2.
    发明申请
    Methods for estimating properties of a subterranean formation and/or a fracture therein 有权
    估算地下岩层性质和/或其中裂缝的方法

    公开(公告)号:US20080133193A1

    公开(公告)日:2008-06-05

    申请号:US11607254

    申请日:2006-12-01

    IPC分类号: G06G7/50 E21B47/00

    摘要: Methods that include a method of determining one or more approximate properties of a subterranean formation and/or a fracture therein comprising: obtaining fluid identity data for a plurality of flowback fluid samples; and using a reservoir model, with the fluid identity data and one or more subterranean formation properties as inputs thereto, to estimate one or more properties in a subterranean formation. Additional methods are provided.

    摘要翻译: 包括确定地下地层的一个或多个近似性质和/或其中断裂的方法的方法包括:获得多个回流流体样品的流体识别数据; 以及使用具有流体识别数据和一个或多个地下地层属性作为其输入的储层模型来估计地下地层中的一个或多个特性。 提供了其他方法。

    Reducing aluminum compound precipitation following subterranean formation acidizing
    3.
    发明授权
    Reducing aluminum compound precipitation following subterranean formation acidizing 失效
    地下酸化后还原铝化合物沉淀

    公开(公告)号:US06531427B1

    公开(公告)日:2003-03-11

    申请号:US08587821

    申请日:1996-01-11

    IPC分类号: C09K300

    摘要: Methods and compositions for reducing the precipitation of aluminum compounds following the contact of an aluminum containing subterranean formation with an acid solution containing hydrofluoric acid are provided. In accordance with the methods, a hydroxy carboxylic acid is combined with the hydrofluoric acid solution and the subterranean formation is contacted with the resulting acid solution.

    摘要翻译: 提供了在含铝地层与含有氢氟酸的酸溶液接触之后还原铝化合物沉淀的方法和组合物。 根据该方法,将羟基羧酸与氢氟酸溶液合并,使地层与所得酸溶液接触。

    Methods and compositions for controlling the viscosity of viscoelastic surfactant fluids
    4.
    发明授权
    Methods and compositions for controlling the viscosity of viscoelastic surfactant fluids 有权
    用于控制粘弹性表面活性剂流体粘度的方法和组合物

    公开(公告)号:US07261160B2

    公开(公告)日:2007-08-28

    申请号:US11225536

    申请日:2005-09-13

    IPC分类号: E21B43/27 C09K8/60

    CPC分类号: C09K8/68 C09K8/12 C09K2208/30

    摘要: Viscoelastic surfactant fluids, and methods of using such fluids and controlling the viscosity thereof. In one embodiment, the methods of the present invention comprise: providing a viscoelastic surfactant fluid that comprises an aqueous-base fluid, and a surfactant; providing a metal ion having at least two oxidation states wherein at least one of the oxidation states interferes with the ability of the surfactant to form a viscosifying micelle, wherein at least a portion of the metal ion is present in an oxidation state that interferes with the ability of the surfactant to form a viscosifying micelle; allowing the metal ion to interact with viscoelastic surfactant fluid so as to decrease the ability of the surfactant to form a viscosifying micelle; and introducing the viscoelastic surfactant fluid into at least a portion of a subterranean formation.

    摘要翻译: 粘弹性表面活性剂流体,以及使用这种流体并控制其粘度的方法。 在一个实施方案中,本发明的方法包括:提供包含水基液体和表面活性剂的粘弹性表面活性剂流体; 提供具有至少两种氧化态的金属离子,其中至少一种氧化态干扰表面活性剂形成增粘胶束的能力,其中金属离子的至少一部分以氧化态存在,其干扰 表面活性剂形成增粘胶束的能力; 使金属离子与粘弹性表面活性剂流体相互作用,降低表面活性剂形成增粘胶束的能力; 以及将所述粘弹性表面活性剂流体引入到地层的至少一部分中。

    Methods for estimating properties of a subterranean formation and/or a fracture therein
    5.
    发明授权
    Methods for estimating properties of a subterranean formation and/or a fracture therein 有权
    估算地下岩层性质和/或其中裂缝的方法

    公开(公告)号:US07472748B2

    公开(公告)日:2009-01-06

    申请号:US11607254

    申请日:2006-12-01

    IPC分类号: E21B49/08

    摘要: Methods that include a method of determining one or more approximate properties of a subterranean formation and/or a fracture therein comprising: obtaining fluid identity data for a plurality of flowback fluid samples; and using a reservoir model, with the fluid identity data and one or more subterranean formation properties as inputs thereto, to estimate one or more properties in a subterranean formation. Additional methods are provided.

    摘要翻译: 包括确定地下地层的一个或多个近似性质和/或其中断裂的方法的方法包括:获得多个回流流体样品的流体识别数据; 以及使用具有流体识别数据和一个或多个地下地层属性作为其输入的储层模型来估计地下地层中的一个或多个特性。 提供了其他方法。

    Reducing aluminum compound precipitation during subterranean formation acidizing
    6.
    发明授权
    Reducing aluminum compound precipitation during subterranean formation acidizing 失效
    在地层酸化期间减少铝化合物的沉淀

    公开(公告)号:US06506711B1

    公开(公告)日:2003-01-14

    申请号:US08492680

    申请日:1995-06-20

    IPC分类号: C09K300

    摘要: Methods and compositions for reducing the precipitation of fluoride compounds following the contact of an aluminum containing subterranean formation with an acid solution containing hydrofluoric acid are provided. In accordance with the methods, a hydroxy carboxylic acid is combined with the hydrofluoric acid solution and the subterranean formation is contacted with the resulting acid solution.

    摘要翻译: 提供了在含铝地层与含有氢氟酸的酸溶液接触之后减少氟化物沉淀的方法和组合物。 根据该方法,将羟基羧酸与氢氟酸溶液合并,使地层与所得酸溶液接触。