Methods of controlled acidization in a wellbore
    1.
    发明授权
    Methods of controlled acidization in a wellbore 有权
    井筒控制酸化的方法

    公开(公告)号:US07431088B2

    公开(公告)日:2008-10-07

    申请号:US11336475

    申请日:2006-01-20

    IPC分类号: E21B43/27

    CPC分类号: C09K8/72 C09K8/52

    摘要: An improved acidization method is provided in which an aqueous solution comprising one or more esters or polyesters of lactic acid or of glycerol is placed in a well where the esters or polyesters undergo hydrolysis. The hydrolysis of the esters or polyesters occurs at a slower reaction rate than that of several other known acidization esters, such as diethyleneglycol diformate, at temperatures higher than 60° C. or even higher than 100° C. Thus, the solution may be distributed substantially throughout a region in the well where acidization is required before hydrolysis is completed, despite being exposed to relatively high temperatures.

    摘要翻译: 提供了一种改进的酸化方法,其中将包含一种或多种乳酸或甘油的酯或聚酯的水溶液置于酯或聚酯经历水解的孔中。 在高于60℃或甚至高于100℃的温度下,酯或聚酯的水解反应速度比几种其它已知的酸化酯如二甘醇二甲酸酯的反应速率慢。因此,溶液可以分布 基本上遍及在水解完成之前需要酸化的井中的一个区域,尽管暴露于较高的温度。

    Methods and compositions relating to the control of the rates of acid-generating compounds in acidizing operations
    2.
    发明授权
    Methods and compositions relating to the control of the rates of acid-generating compounds in acidizing operations 有权
    与控制酸化操作中产酸化合物的速率有关的方法和组成

    公开(公告)号:US07455112B2

    公开(公告)日:2008-11-25

    申请号:US11536833

    申请日:2006-09-29

    IPC分类号: E21B43/27

    CPC分类号: C09K8/74

    摘要: Of the many methods provided, in one embodiment, a method is provided that comprises: providing an acid-generating fluid that comprises an acid-generating compound, a base fluid, and a salt; placing the acid-generating fluid in a well bore penetrating a subterranean formation; allowing the salt to affect the hydrolysis of the acid-generating compound; and allowing the acid-generating compound to produce an acid that then acidizes at least a portion of the formation or damage contained therein.

    摘要翻译: 在所提供的许多方法中,在一个实施方案中,提供了一种方法,其包括:提供包含产酸化合物,基础液和盐的产酸流体; 将产酸流体置于穿透地层的井眼中; 允许盐影响产酸化合物的水解; 并且允许产酸化合物产生酸,然后酸化其中所含的形成或损伤的至少一部分。

    Methods and Compositions Relating to the Control of the Rates of Acid-Generating Compounds in Acidizing Operations
    3.
    发明申请
    Methods and Compositions Relating to the Control of the Rates of Acid-Generating Compounds in Acidizing Operations 有权
    酸化操作中产酸化合物速率控制的方法和组成

    公开(公告)号:US20080078549A1

    公开(公告)日:2008-04-03

    申请号:US11536833

    申请日:2006-09-29

    IPC分类号: E21B43/27 C09K8/76

    CPC分类号: C09K8/74

    摘要: Of the many methods provided, in one embodiment, a method is provided that comprises: providing an acid-generating fluid that comprises an acid-generating compound, a base fluid, and a salt; placing the acid-generating fluid in a well bore penetrating a subterranean formation; allowing the salt to affect the hydrolysis of the acid-generating compound; and allowing the acid-generating compound to produce an acid that then acidizes at least a portion of the formation or damage contained therein.

    摘要翻译: 在所提供的许多方法中,在一个实施方案中,提供了一种方法,其包括:提供包含产酸化合物,基础液和盐的产酸流体; 将产酸流体置于穿透地层的井眼中; 允许盐影响产酸化合物的水解; 并且允许产酸化合物产生酸,然后酸化其中所含的形成或损伤的至少一部分。

    Suspension Characteristics in Invert Emulsions
    4.
    发明申请
    Suspension Characteristics in Invert Emulsions 有权
    反相乳液的悬浮特性

    公开(公告)号:US20110053808A1

    公开(公告)日:2011-03-03

    申请号:US12552072

    申请日:2009-09-01

    IPC分类号: C09K8/36

    CPC分类号: C09K8/36

    摘要: Among the methods provided is a method of drilling a subterranean well with an invert emulsion fluid comprising: providing an invert emulsion fluid formed by combining components that comprise: an oil-based continuous phase; an aqueous discontinuous phase; and a polar hydrophobic additive that comprises a polar hydrophobe, wherein the polar hydrophobic additive may substantially increases the yield point, the low-shear yield point, or both of the invert emulsion fluid relative to a fluid without a polar hydrophobic additive while limiting the change in the plastic viscosity to no more than about 35% of the change in the property with the largest increase; and placing the invert emulsion fluid in a subterranean formation.

    摘要翻译: 提供的方法之一是用反相乳液流体钻探地下井的方法,包括:提供通过组合组分形成的反相乳液,所述组分包括:基于油的连续相; 水不连续相; 和极性疏水性添加剂,其包含极性疏水性添加剂,其中极性疏水性添加剂可显着提高相对于不含极性疏水添加剂的流体的转化乳液流体的屈服点,低剪切屈服点或两者,同时限制变化 在塑料粘度不超过约35%的财产变化最大增幅; 并将颠倒的乳液流体置于地层中。

    Additives for imparting fragile progressive gel structure and controlled temporary viscosity to oil based drilling fluids
    5.
    发明授权
    Additives for imparting fragile progressive gel structure and controlled temporary viscosity to oil based drilling fluids 失效
    赋予油基钻井液易碎渐进凝胶结构和受控临时粘度的添加剂

    公开(公告)号:US07560418B2

    公开(公告)日:2009-07-14

    申请号:US11244801

    申请日:2005-10-06

    摘要: Metal cross-linked phosphate ester compositions impart fragile progressive gel structure to a variety of oil and invert emulsion-based drilling fluids at neutral or acidic pH. The fluids are useful for drilling wellbores in subterranean formations without need for organophilic clays to suspend drill solids. At greater concentrations, metal cross-linked phosphate ester compositions enhance fluid viscosity for suspending weighting materials in drilling fluids during transport of the fluids, as from a manufacturing or mixing facility to a drilling site.

    摘要翻译: 金属交联磷酸酯组合物在中性或酸性pH下赋予各种油和反相乳液基钻井液的脆弱进行性凝胶结构。 这些流体可用于在地下地层中钻井孔,而不需要亲有机物的粘土来悬浮钻石固体。 在更高的浓度下,金属交联的磷酸酯组合物在流体的输送期间提高流体粘度,从而将钻井液中的重量材料悬浮在钻井液中,如从制造或混合设备到钻井现场。

    Composition and Method for Removing Metal Contaminants
    6.
    发明申请
    Composition and Method for Removing Metal Contaminants 有权
    去除金属污染物的组成和方法

    公开(公告)号:US20120261609A1

    公开(公告)日:2012-10-18

    申请号:US13454932

    申请日:2012-04-24

    IPC分类号: C09K3/00

    摘要: A composition comprising a substrate, an organic ion, and a metal binding agent, wherein the substrate comprises a natural clay, a synthetic clay, a natural zeolite, a synthetic zeolite, a polymer resin, lignite, kaolinite, serpentine, illite, chlorite, smectite, montmorillonite, saponite, sepiolite, nontronite, beidellite, hectorite, fuller's earth, attapulgite, bentonite, analcime, chabazite, heulandite, natrolite, phillipsite, stilbite, diethyl aminoethyl, quaternary aminoethyl, or combinations thereof, wherein the organic ion comprises quaternary amines, imidazolium salts, phosphonium salts, tetra alkyl ammonium, bis-(hydrogenated tallow)-dimethyl-ammonium chloride, bis-(hydrogenated tallow)-benzyl-methyl-ammonium chloride, 4,5-dihydro-1-methyl-2-nortallow-alkyl-1-(2-tallow-amidoethyl)-imidazolium methyl sulfate, 1-ethyl-4,5-dihydro-3-(2-hydroxyethyl)-2-(8-heptadecenyl)-imidazolium ethyl sulfate, or combinations thereof, and wherein the metal-binding agent comprises mercaptan, carboxylic acid, chelating agents, amines, esters, carboxylic acids, alcohols, ethers, aldehydes, ketones, alkenes, alkynes, mercaptans, thiols, tert-dodecanethiol, nonanethiol, octanethiol, n-stearic acid, iso-stearic acid, palmitic acid, or combinations thereof.

    摘要翻译: 包含基材,有机离子和金属粘合剂的组合物,其中所述基材包括天然粘土,合成粘土,天然沸石,合成沸石,聚合物树脂,褐煤,高岭石,蛇纹石,伊利石,亚氯酸盐, 绿泥石,蒙脱石,皂石,海泡石,白云母,贝得石,锂蒙脱石,富勒土,绿坡缕石,膨润土,顺铂,菱沸石,胡萝卜素,钠钙石,氯化石,二氧化硅,二乙基氨基乙基,季氨基乙基或其组合,其中有机离子包括季胺 ,咪唑鎓盐,鏻盐,四烷基铵,双(氢化牛油) - 二甲基氯化铵,双(氢化牛油) - 苄基 - 甲基 - 氯化铵,4,5-二氢-1-甲基-2- - 烷基-1-(2-牛油酰胺基乙基) - 咪唑鎓甲基硫酸盐,1-乙基-4,5-二氢-3-(2-羟乙基)-2-(8-十七烯基) - 咪唑鎓乙基硫酸盐或其组合 ,并且其中所述金属结合剂包括硫醇,碳酸氢盐 羟基酸,螯合剂,胺,酯,羧酸,醇,醚,醛,酮,烯烃,炔烃,硫醇,硫醇,叔十二烷硫醇,壬硫醇,辛硫醇,正硬脂酸,异硬脂酸,棕榈酸, 或其组合。

    Method and composition for improving performance of aqueous and polymer based fluids at high temperatures
    7.
    发明授权
    Method and composition for improving performance of aqueous and polymer based fluids at high temperatures 有权
    在高温下改善基于水性和聚合物的流体性能的方法和组合物

    公开(公告)号:US07749941B2

    公开(公告)日:2010-07-06

    申请号:US10746589

    申请日:2003-12-24

    IPC分类号: C09K8/08 C09K8/10

    CPC分类号: C09K8/08 C09K8/10 C09K8/12

    摘要: The invention provides aqueous based well drilling and servicing fluids containing a polymer viscosifier with enhanced thermal stability provided by a diacid or diacid salt preferably having about two to about eight carbon atoms, such as, for example, sodium oxalate. The invention also provides a method of enhancing the thermal stability of aqueous based well drilling and servicing fluids containing a polymer viscosifer by adding diacid or diacid salt to the fluids.

    摘要翻译: 本发明提供含水基钻井和维修流体,其含有具有增强的热稳定性的聚合物增粘剂,其由优选具有约2至约8个碳原子的二酸或二酸盐提供,例如草酸钠。 本发明还提供了一种通过向流体中加入二酸或二酸盐来增强含有聚合物粘稠剂的含水基钻井和维修流体的热稳定性的方法。

    Surfactant-free emulsions and methods of use thereof
    8.
    发明授权
    Surfactant-free emulsions and methods of use thereof 有权
    无表面活性剂乳液及其使用方法

    公开(公告)号:US07507694B2

    公开(公告)日:2009-03-24

    申请号:US10799810

    申请日:2004-03-12

    IPC分类号: C09K8/64 C09K8/70

    摘要: In one embodiment, the present invention provides a drilling fluid composition that comprises a surfactant-free emulsion comprising an oleaginous fluid, a fluid that is at least partially immiscible with the oleaginous fluid, and emulsion facilitating particles. In another embodiment, the present invention provides a method of treating a subterranean formation comprising providing a treatment fluid that comprises a surfactant-free emulsion, the surfactant-free emulsion comprising an oleaginous fluid, a fluid that is at least partially immiscible with the oleaginous fluid, and emulsion facilitating particles; and treating the subterranean formation.

    摘要翻译: 在一个实施方案中,本发明提供了一种钻井液组合物,其包含无表面活性剂的乳液,其包含油性流体,与油质流体至少部分不混溶的流体和促进乳液的颗粒。 在另一个实施方案中,本发明提供了一种处理地下地层的方法,其包括提供包含不含表面活性剂的乳液的处理流体,所述无表面活性剂的乳液包含油性流体,与所述含油流体至少部分不混溶的流体 ,和促进乳液的颗粒; 并处理地层。

    COMPOSITION AND METHOD FOR REMOVING METAL CONTAMINANTS
    9.
    发明申请
    COMPOSITION AND METHOD FOR REMOVING METAL CONTAMINANTS 有权
    用于去除金属污染物的组合物和方法

    公开(公告)号:US20090057232A1

    公开(公告)日:2009-03-05

    申请号:US11849867

    申请日:2007-09-04

    IPC分类号: C02F1/62

    摘要: A method for removing a metal from a metal-containing solution comprising contacting the metal-containing solution with a metal-removing composition comprising a substrate, an organic ion, and a metal binding agent, and recovering a solution having a lowered metal concentration when compared to the metal-containing solution. A composition comprising a substrate, an organic ion, and a metal binding agent, wherein the substrate comprises a natural clay, a synthetic clay, a natural zeolite, a synthetic zeolite, a polymer resin, lignite, kaolinite, serpentine, illite, chlorite, smectite, montmorillonite, saponite, sepiolite, nontronite, beidellite, hectorite, fuller's earth, attapulgite, bentonite, analcime, chabazite, heulandite, natrolite, phillipsite, stilbite, diethyl aminoethyl, quaternary aminoethyl, or combinations thereof, wherein the organic ion comprises quaternary amines, imidazolium salts, phosphonium salts, tetra alkyl ammonium, bis-(hydrogenated tallow)-dimethyl-ammonium chloride, bis-(hydrogenated tallow)-benzyl-methyl-ammonium chloride, 4,5-dihydro-1-methyl-2-nortallow-alkyl-1-(2-tallow-amidoethyl)-imidazolium methyl sulfate, 1-ethyl-4,5-dihydro-3 -(2-hydroxyethyl)-2-(8-heptadecenyl)-imidazolium ethyl sulfate, or combinations thereof, and wherein the metal-binding agent comprises mercaptan, carboxylic acid, chelating agents, amines, esters, carboxylic acids, alcohols, ethers, aldehydes, ketones, alkenes, alkynes, mercaptans, thiols, tert-dodecanethiol, nonanethiol, octanethiol, n-stearic acid, iso-stearic acid, palmitic acid, or combinations thereof.

    摘要翻译: 一种从含金属溶液中除去金属的方法,包括使含金属溶液与包含基底,有机离子和金属粘合剂的金属去除组合物接触,并且当比较时回收具有降低的金属浓度的溶液 到含金属溶液。 包含基材,有机离子和金属粘合剂的组合物,其中所述基材包括天然粘土,合成粘土,天然沸石,合成沸石,聚合物树脂,褐煤,高岭石,蛇纹石,伊利石,亚氯酸盐, 绿泥石,蒙脱石,皂石,海泡石,白云母,贝得石,锂蒙脱石,富勒土,绿坡缕石,膨润土,顺铂,菱沸石,胡萝卜素,钠钙石,氯化石,二氧化硅,二乙基氨基乙基,季氨基乙基或其组合,其中有机离子包括季胺 ,咪唑鎓盐,鏻盐,四烷基铵,双(氢化牛油) - 二甲基氯化铵,双(氢化牛油) - 苄基 - 甲基 - 氯化铵,4,5-二氢-1-甲基-2- - 烷基-1-(2-牛油酰胺基乙基) - 咪唑鎓甲基硫酸盐,1-乙基-4,5-二氢-3-(2-羟乙基)-2-(8-十七碳烯基) - 咪唑鎓乙基硫酸盐或其组合 ,并且其中金属结合剂包括硫醇,汽车 胺,酯,羧酸,醇,醚,醛,酮,烯烃,炔烃,硫醇,硫醇,叔十二烷硫醇,壬硫醇,辛硫醇,正硬脂酸,异硬脂酸,棕榈酸, 或其组合。