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1. 发明授权

US4743383A Drilling fluid additives for use in hard brine environments 失效
标题翻译：钻井液添加剂用于硬盐水环境
公开(公告)号：US4743383A
公开(公告)日：1988-05-10
申请号：US934388
申请日：1986-11-24
申请人： Wayne S. Stewart , George G. Dixon , John M. Elsen , Billy L. Swanson
发明人： Wayne S. Stewart , George G. Dixon , John M. Elsen , Billy L. Swanson
IPC分类号： C09K8/035 , C09K7/02
CPC分类号： C09K8/035
摘要： A drilling fluid additive is disclosed which will prevent water loss into subterranean formations during the drilling of oil and gas wells in hard brine environments. The drilling fluid additive comprises a hydrocarbon, an anionic surfactant, an alcohol, a sulfonated asphalt, a biopolymer, and optionally an organophilic clay, poly(N-vinyl-2-pyrrolidone-co-sodium-2-acryamido-2-methylpropane sulfonate, and water.
摘要翻译：公开了一种钻井液添加剂，其将在硬盐水环境中的油气井钻井期间防止水分流入地下地层。钻井液添加剂包括烃，阴离子表面活性剂，醇，磺化沥青，生物聚合物和任选的亲有机粘土，聚（N-乙烯基-2-吡咯烷酮 - 共钠-2-丙烯酰胺基-2-甲基丙烷磺酸盐，和水。

2. 发明授权

US5922653A Compositions and processes for treating subterranean formations 失效
标题翻译：用于处理地下地层的组合物和方法
公开(公告)号：US5922653A
公开(公告)日：1999-07-13
申请号：US723635
申请日：1996-10-03
申请人： Iqbal Ahmed , Ahmad Moradi-Araghi , Bharat B. Patel , Wayne S. Stewart
发明人： Iqbal Ahmed , Ahmad Moradi-Araghi , Bharat B. Patel , Wayne S. Stewart
IPC分类号： C07C237/04 , C07C309/14 , C07D521/00 , C08F20/60 , C09K8/24 , C09K8/588 , C09K8/60 , C09K8/68 , C09K3/00 , C08F26/08 , C09K7/00 , E21B43/17
CPC分类号： C07C237/04 , C07C309/14 , C07D231/12 , C07D233/56 , C07D249/08 , C07D295/185 , C08F20/60 , C09K8/24 , C09K8/588 , C09K8/608 , C09K8/685
摘要： A composition and a process for using the composition for applications in a subterranean formation are provided. The composition comprises a clay, a polymer, and a liquid. The polymer comprises repeat units derived from a nitrogen-containing olefinic monomer and optionally an olefinic comonomer. The composition can be used as or in drilling fluids, workover fluids, completion fluids, or combinations of any two or more thereof.
摘要翻译：提供了一种用于使用该组合物用于地下地层中的应用的组合物和方法。组合物包含粘土，聚合物和液体。聚合物包含衍生自含氮烯烃单体和任选的烯属共聚单体的重复单元。组合物可以用作钻井液，修井液，完井液或其任何两种或更多种的组合。

3. 发明授权

US06730637B1 Reducing fluid loss in a drilling fluid 失效
标题翻译：减少钻井液中的液体损失
公开(公告)号：US06730637B1
公开(公告)日：2004-05-04
申请号：US10310984
申请日：2002-12-06
申请人： Wayne S. Stewart , Nathan E. Stacy , Kelly B. Fox , Bharat B. Patel , Sam B. Ledbetter , Alvin Evans
发明人： Wayne S. Stewart , Nathan E. Stacy , Kelly B. Fox , Bharat B. Patel , Sam B. Ledbetter , Alvin Evans
IPC分类号： C09K706
CPC分类号： C09K8/32
摘要： This invention relates to a low toxicity drilling mud oil. In some embodiments, the fluid loss characteristic of the drilling mud oil as used in a borehole can be reduced to less than 0.2 ml/30 minutes by adding about 0.05% to about 2.0% by weight of a butadiene-styrene-butadiene (BSB) block copolymer having about 20% by weight or more styrene.
摘要翻译：本发明涉及一种低毒钻井泥浆油。在一些实施方案中，通过加入约0.05％至约2.0％重量的丁二烯 - 苯乙烯 - 丁二烯（BSB），井眼中使用的钻井泥浆油的流体损失特性可以降低到小于0.2ml / 30分钟，具有约20重量％或更多苯乙烯的嵌段共聚物。

4. 发明授权

US07169739B2 Methods of reducing sag in non-aqueous fluids 失效
标题翻译：减少非水液体松弛的方法
公开(公告)号：US07169739B2
公开(公告)日：2007-01-30
申请号：US10764667
申请日：2004-01-26
申请人： Olusegun M. Falana , Bharat B. Patel , Wayne S. Stewart
发明人： Olusegun M. Falana , Bharat B. Patel , Wayne S. Stewart
IPC分类号： E21B33/00
CPC分类号： C09K8/32
摘要： Methods of reducing sag include combining a cystol ester compound with a non-aqueous fluid and particles to reduce sag in the resulting fluid composition without significantly increasing the viscosity of the fluid composition. The fluid composition CONTAINS the non-aqueous fluid, the particles, and the cystol ester compound. Suitable cystol ester compounds include cystol ester and derivatives of cystol ester having mono-, di-, or tri-substituted aromatic compounds as substituents. The non-aqueous fluid may CONTAINS an invert emulsion, diesel oil, mineral oil, an olefin, an organic ester, a synthetic fluid, or combinations thereof. Further, the fluid composition may be used as a wellbore servicing fluid such as a drilling fluid. The particles may CONTAINS a weighting agent, e.g., barite, galena, hematite, dolomite, calcite, or combinations thereof. The fluid composition may also include organophilic clay.
摘要翻译：降低下垂的方法包括将鲸蜡酯化合物与非水性流体和颗粒组合以减少所得流体组合物中的下垂，而不显着增加流体组合物的粘度。该液体组合物含有非水性流体，颗粒和二醇酯化合物。合适的癸二醇酯化合物包括具有单取代基，二取代或三取代的芳族化合物作为取代基的胱抑酯和胞苷酯衍生物。非水性流体可以包含反相乳液，柴油，矿物油，烯烃，有机酯，合成流体或其组合。此外，流体组合物可以用作井筒维修流体，例如钻井液。颗粒可以包含加重剂，例如重晶石，方铅矿，赤铁矿，白云石，方解石或其组合。流体组合物还可以包括亲有机粘土。

5. 发明授权

US5480863A Brine viscosification 失效
标题翻译：盐水增稠
公开(公告)号：US5480863A
公开(公告)日：1996-01-02
申请号：US18133
申请日：1993-02-16
申请人： Johnna E. Oakley , Kelly B. Fox , Alvin Evans, Jr. , Wayne S. Stewart
发明人： Johnna E. Oakley , Kelly B. Fox , Alvin Evans, Jr. , Wayne S. Stewart
IPC分类号： C09K8/12 , C09K8/84 , C09K7/00 , E21B43/00
CPC分类号： C09K8/845 , C09K8/12
摘要： A process for increasing the viscosity of a zinc compound-containing brine which can be used for workover and completion fluids in oil field operations is provided. The process comprises contacting the zinc compound-containing brine with a polymer which comprises repeating units derived from an unsaturated amide having the formula of CH.sub.2 .dbd.CH--R--C(O)--NH.sub.2 and a vinylic sulfur compound selected from the group consisting of CH.sub.2 .dbd.CH--R'--SO.sub.3 M, CH.sub.2 .dbd.CH--R"--C(O)--N(H)--R"'--SO.sub.2 M, and mixtures thereof; wherein M is selected from the group consisting of hydrogen, an alkali metal, and combinations thereof; and R is selected from the group consisting of hydrogen, a hydrocarbyl radical having from 1 to about 20 carbon atoms, and combinations thereof.
摘要翻译：提供了一种用于提高在油田操作中可用于修井和完井液体的含锌化合物的盐水的粘度的方法。该方法包括使含锌化合物的盐水与聚合物接触，所述聚合物包含衍生自具有式CH 2 = CH-RC（O）-NH 2的不饱和酰胺的重复单元和选自下组的乙烯基硫化合物：CH 2 = CH -R'-SO 3 M，CH 2 = CH-R“C（O）-N（H）-R”'-SO 2 M，及其混合物; 其中M选自氢，碱金属及其组合; 并且R选自氢，具有1至约20个碳原子的烃基，及其组合。

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