Method for single-stage treatment of siliceous subterranean formations
    1.
    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。

    Non-Damaging Fluid-Loss Pill and Method of Using the Same
    2.
    发明申请
    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:US20060254771A1

    公开(公告)日:2006-11-16

    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。

    Non-Damaging Fluid-Loss Pill and Method of Using the Same
    4.
    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。

    Differential etching in acid fracturing
    5.
    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。

    Scale inhibitors compatible with sandstone acidizing
    7.
    发明授权
    Scale inhibitors compatible with sandstone acidizing 有权
    鳞屑抑制剂与砂岩酸化相容

    公开(公告)号:US07950462B2

    公开(公告)日:2011-05-31

    申请号:US12765938

    申请日:2010-04-23

    IPC分类号: E21B21/00 E21B37/08

    摘要: Methods are given for making scale inhibitors, that were previously incompatible with fluids containing fluoride ion, compatible with fluids containing fluoride ion. Examples of such scale inhibitors include phosphonates and phosphino-polycarboxylates. The method is replacing alkali metal and alkaline earth metal cations, present in salts or bases, or as counter ions of the scale inhibitors, with hydrogen or ammonium ions. Methods of inhibiting scale formation and of dissolving scales are also given.

    摘要翻译: 给出了制备阻垢剂的方法,以前与含有氟离子的流体不兼容,与含有氟离子的流体相容。 这种阻垢剂的实例包括膦酸盐和膦基 - 多羧酸盐。 该方法用氢或铵离子替代存在于盐或碱中的碱金属和碱土金属阳离子,或者作为阻垢剂的抗衡离子。 还给出了抑制结垢和溶解鳞片的方法。

    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。