Solid sandstone dissolver
    1.
    发明申请

    公开(公告)号:US20060054325A1

    公开(公告)日:2006-03-16

    申请号:US10941355

    申请日:2004-09-15

    IPC分类号: E21B43/26

    CPC分类号: C09K8/62

    摘要: A dry solid composition is disclosed that, when added to an aqueous liquid, provides a slurry that can be used in sandstone acid fracturing. The slurry generates hydrofluoric acid downhole to etch the sandstone fracture faces created. The chemical and physical properties of the composition result in very uneven etching of the fracture faces, enhancing the fluid conductivity of the final fracture. Optionally, inert masking materials may be included in the dry composition, or added to the slurry, to increase the inhomogeneity of the etching and further increase the fluid conductivity.

    Solid Sandstone Dissolver
    2.
    发明申请
    Solid Sandstone Dissolver 有权
    固体砂岩溶解剂

    公开(公告)号:US20080006409A1

    公开(公告)日:2008-01-10

    申请号:US11858266

    申请日:2007-09-20

    IPC分类号: E21B43/27

    CPC分类号: C09K8/62

    摘要: A dry solid composition is disclosed that, when added to an aqueous liquid, provides a slurry that can be used in sandstone acid fracturing. The slurry generates hydrofluoric acid downhole to etch the sandstone fracture faces created. The chemical and physical properties of the composition result in very uneven etching of the fracture faces, enhancing the fluid conductivity of the final fracture. Optionally, inert masking materials may be included in the dry composition, or added to the slurry, to increase the inhomogeneity of the etching and further increase the fluid conductivity.

    摘要翻译: 公开了一种干固体组合物,当加入到含水液体中时,提供可用于砂岩酸压裂的浆料。 该浆液在井下产生氢氟酸以蚀刻产生的砂岩断裂面。 组合物的化学和物理性质导致断裂面的非常不均匀的蚀刻,增强了最终断裂的流体导电性。 任选地,惰性掩蔽材料可以包括在干燥组合物中或加入到浆料中,以增加蚀刻的不均匀性并进一步提高流体导电性。

    Differential etching in acid fracturing
    3.
    发明申请
    Differential etching in acid fracturing 审中-公开
    酸压裂中的差分蚀刻

    公开(公告)号:US20050113263A1

    公开(公告)日:2005-05-26

    申请号:US10941385

    申请日:2004-09-15

    摘要: A method for fracturing a subterranean formation is provided in which inert masking material particles are injected into the formation with a dissolution agent so that the masking material inhibits dissolution where it contacts a portion of one or both fracture faces. The undissolved regions provide support to keep the fracture open after the treatment and the dissolved regions provide a conductive pathway for flow of fluid to or from the wellbore.

    摘要翻译: 提供了一种用于压裂地层的方法,其中惰性掩蔽材料颗粒用溶解剂注入到地层中,使得掩蔽材料在其接触一个或两个断裂面的一部分时抑制溶解。 未溶解区域提供支撑以在处理后保持断裂,并且溶解区域提供用于将流体流入或流出井眼的导电路径。

    Solid sandstone dissolver
    4.
    发明授权
    Solid sandstone dissolver 有权
    实心砂岩溶解器

    公开(公告)号:US07540328B2

    公开(公告)日:2009-06-02

    申请号:US11858266

    申请日:2007-09-20

    IPC分类号: E21B43/27

    CPC分类号: C09K8/62

    摘要: A dry solid composition is disclosed that, when added to an aqueous liquid, provides a slurry that can be used in sandstone acid fracturing. The slurry generates hydrofluoric acid downhole to etch the sandstone fracture faces created. The chemical and physical properties of the composition result in very uneven etching of the fracture faces, enhancing the fluid conductivity of the final fracture. Optionally, inert masking materials may be included in the dry composition, or added to the slurry, to increase the inhomogeneity of the etching and further increase the fluid conductivity.

    摘要翻译: 公开了一种干固体组合物,当加入到含水液体中时,提供可用于砂岩酸压裂的浆料。 该浆液在井下产生氢氟酸以蚀刻产生的砂岩断裂面。 组合物的化学和物理性质导致断裂面的非常不均匀的蚀刻,增强了最终断裂的流体导电性。 任选地,惰性掩蔽材料可以包括在干燥组合物中或加入到浆料中,以增加蚀刻的不均匀性并进一步提高流体导电性。

    Method for single-stage treatment of siliceous subterranean formations
    5.
    发明授权
    Method for single-stage treatment of siliceous subterranean formations 有权
    硅质地层单层处理方法

    公开(公告)号:US08312929B2

    公开(公告)日:2012-11-20

    申请号:US12019394

    申请日:2008-01-24

    IPC分类号: E21B43/28

    CPC分类号: C09K8/74

    摘要: In a method of treating a sandstone-containing formation penetrated by a wellbore, a treatment fluid comprising an aqueous fluid containing a Bronsted acid, a hydrogen fluoride source and an organic acid or salt thereof that is substantially soluble in the aqueous fluid is formed. The treatment fluid contains less than about 2% of fluoride (F−) by weight of the fluid and from 2% or less of sodium (Na+) by weight of the fluid. The treatment fluid is introduced into the formation through the wellbore as a single-stage without introducing an acid-containing fluid preflush into the formation prior to introducing the treatment fluid.

    摘要翻译: 在处理由井眼渗透的含砂岩地层的方法中,形成包含基本上可溶于水性流体的含有布朗斯台德酸,氟化氢源及其有机酸或其盐的含水流体的处理流体。 处理液含有少于约2%的流体重量的氟化物(F-),和流体重量的2%或更少的钠(Na +)。 在引入处理流体之前,将处理流体作为单阶段通过井筒引入地层,而不将酸含量的流体预吹入地层中。

    Method for Single-Stage Treatment of Siliceous Subterranean Formations
    8.
    发明申请
    Method for Single-Stage Treatment of Siliceous Subterranean Formations 有权
    硅酸盐地层单阶段处理方法

    公开(公告)号:US20090192057A1

    公开(公告)日:2009-07-30

    申请号:US12053875

    申请日:2008-03-24

    IPC分类号: C09K8/86

    CPC分类号: C09K8/74

    摘要: In a method of treating a sandstone-containing formation penetrated by a wellbore, a treatment fluid comprising an aqueous fluid containing a Bronsted acid, a hydrogen fluoride source and an organic acid or salt thereof that is substantially soluble in the aqueous fluid is formed. The treatment fluid contains less than about 2% of fluoride (F−) by weight of the fluid and from 2% or less of sodium (Na+) by weight of the fluid. The treatment fluid is introduced into the formation through the wellbore as a single-stage without introducing an acid-containing fluid preflush into the formation prior to introducing the treatment fluid.

    摘要翻译: 在处理由井眼渗透的含砂岩地层的方法中,形成包含基本上可溶于水性流体的含有布朗斯台德酸,氟化氢源及其有机酸或其盐的含水流体的处理流体。 处理液含有少于约2%的流体重量的氟化物(F-),和流体重量的2%或更少的钠(Na +)。 在引入处理流体之前,将处理流体作为单阶段通过井筒引入地层,而不将酸含量的流体预吹入地层中。

    Non-Damaging Fluid-Loss Pill and Method of Using the Same
    10.
    发明授权
    Non-Damaging Fluid-Loss Pill and Method of Using the Same 有权
    非损伤性流体损失药丸及其使用方法

    公开(公告)号:US07207388B2

    公开(公告)日:2007-04-24

    申请号:US11422760

    申请日:2006-06-07

    IPC分类号: E21B33/13

    摘要: A fluid-loss pill that includes a brine solution and an effective amount of a viscoelastic surfactant is disclosed. The viscoelastic surfactant preferably includes at least one compound selected from the family of compounds described by where R1, R2, R3, R4 and R5 are carbon atom or carbon chains, saturated or unsaturated, single or multiple unsaturation, straight chain, branched chain or cyclic including aromatic or alicyclic groups, and R1 contains 16–26 carbon atoms, R2 contains 2–10 carbon atoms, R3, R4 and R5 contains 1–6 carbon atoms. Methods of treating a well that include injecting fluid-loss pill into a well to control lost-circulation or to kill a well.

    摘要翻译: 公开了一种包含盐水溶液和有效量的粘弹性表面活性剂的流体损失药丸。 粘弹性表面活性剂优选包括至少一种选自由R 1,R 2,R 3,R 3,R 3,R 3, S 4和R 5是碳原子或碳链,饱和或不饱和的单或多个不饱和键,包括芳族或脂环族基团的直链,支链或环状,R 1 含有16-26个碳原子,R 2 2含有2-10个碳原子,R 3,R 4和R 4 5 含有1-6个碳原子。 治疗井的方法包括将液体损失药丸注入井中以控制缺水循环或杀死井。