Lubricants for drilling fluids
    1.
    发明授权
    Lubricants for drilling fluids 有权
    钻井液润滑剂

    公开(公告)号:US06806235B1

    公开(公告)日:2004-10-19

    申请号:US09856082

    申请日:2001-08-24

    IPC分类号: C09K702

    CPC分类号: C09K8/06

    摘要: A process for imparting lubricity to an aqueous drilling fluid used in geological exploration involving: (a) providing an aqueous drilling fluid; (b) providing a lubricant component containing a partial glyceride of predominantly unsaturated fatty acids having from about 16 to 24 carbon atoms; and (c) introducing the partial glyceride into the aqueous drilling fluid.

    摘要翻译: 用于赋予地质勘探中使用的含水钻井液的润滑性的方法,涉及:(a)提供含水钻井液; (b)提供含有具有约16至24个碳原子的主要不饱和脂肪酸的偏甘油酯的润滑剂组分; 和(c)将部分甘油酯引入含水钻井液中。

    Drilling fluid, apparatus, and method
    2.
    发明授权
    Drilling fluid, apparatus, and method 失效
    钻井液,设备和方法

    公开(公告)号:US06806231B2

    公开(公告)日:2004-10-19

    申请号:US10336540

    申请日:2003-01-03

    IPC分类号: C09K702

    摘要: Disclosed are drilling fluids suitable for use in connection with oil well drilling. The drilling fluids of the invention include in one embodiment a liquid base, an alkyl glucoside, such as methyl glucoside, and a borehole stability agent that includes a maltodextrin, a carboxyalkyl starch, a hemicellulose-containing material, or a mixture of the foregoing. In another embodiment, the drilling fluid includes a liquid base and desugared molasses solids, preferably in combination with an alkyl glucoside and more preferably in further combination with one of the aforementioned borehole stability agents. The drilling fluids of the invention surprisingly have a reduced tendency to swell shale as compared with known drilling fluids. Also disclosed are a drilling apparatus and process. The drilling apparatus includes a drill string, which may be conventional, that is fluidically coupled to a source of drilling fluid, the source of drilling fluid including the drilling fluid of the invention. The process of the invention includes the step of circulating the drilling fluid of the invention through a drill string during borehole drilling.

    摘要翻译: 公开了适用于与油井钻井有关的钻井液。 本发明的钻井流体在一个实施方案中包括液体碱,烷基葡糖苷如甲基葡糖苷,以及包含麦芽糖糊精,羧基烷基淀粉,含半纤维素的材料或前述物质的混合物的钻孔稳定剂。 在另一个实施方案中,钻井流体包括液体碱和去糖化的糖蜜固体,优选与烷基葡糖苷组合并且更优选与上述井眼稳定剂之一进一步组合。 与已知的钻井液相比,本发明的钻井液令人惊奇地具有减小页岩膨胀的倾向。 还公开了一种钻井设备和方法。 钻井设备包括钻杆,其可以是常规的,其流体地联接到钻井流体源,钻井流体源包括本发明的钻井流体。 本发明的方法包括在钻孔期间使本发明的钻井液循环通过钻柱的步骤。

    Process for producing a predetermined cesium compound
    5.
    发明授权
    Process for producing a predetermined cesium compound 有权
    制备预定铯化合物的方法

    公开(公告)号:US06436879B1

    公开(公告)日:2002-08-20

    申请号:US09470803

    申请日:1999-12-22

    IPC分类号: C09K702

    摘要: Disclosed is a method for producing a predetermined cesium compound. The method comprises treating a cesium-containing material with a suitable reagent to dissolve at least a portion of the cesium contained in the material and form a slurry; adding a base comprising slaked lime or calcium carbonate and an acid containing the anion of the predetermined cesium compound to the slurry comprising the dissolved cesium; and separating the predetermined cesium compound. In one embodiment of the invention there is provided a method for producing a predetermined cesium compound from an ore comprising cesium aluminosilicate comprising: treating an ore comprising cesium aluminosilicate with an acid to form a slurry and dissolve at least a portion of the cesium contained in the ore; adding a base comprising slaked lime or calcium carbonate and a quantity of an acid containing the anion of the predetermined cesium compound to the slurry comprising dissolved or solubilized cesium; and separating the predetermined cesium compound. A drilling fluid or heavy medium separation fluid comprising the predetermined cesium compound of the process and having a specific gravity of between about 1.2 g/cm3 and about 2.5 g/cm3 and having less than 85% by weight of the predetermined cesium compound on a solution basis is also disclosed.

    摘要翻译: 公开了一种制备预定铯化合物的方法。 该方法包括用合适的试剂处理含铯材料以溶解材料中所含的铯的至少一部分并形成浆料; 向包含溶解的铯的浆料中加入包含熟石灰或碳酸钙的碱和含有预定铯化合物的阴离子的酸; 并分离预定的铯化合物。 在本发明的一个实施方案中,提供了一种从包含硅酸铝镁的矿石制备预定的铯化合物的方法,其包括:用酸处理包含硅铝酸铯的矿石以形成浆料并溶解所述铯硅酸盐中所含的至少一部分铯 矿石; 向包含溶解或溶解的铯的浆料中加入包含熟石灰或碳酸钙的碱和一定量含有预定铯化合物的阴离子的酸; 并分离预定的铯化合物。 一种钻井液或重介质分离流体,其包含本方法的预定铯化合物,其比重为约1.2g / cm 3至约2.5g / cm 3,并且在溶液中具有小于85重量%的预定铯化合物 也披露了基础。

    Copolymers and their use as drilling aids
    6.
    发明授权
    Copolymers and their use as drilling aids 有权
    共聚物及其作为钻井助剂的用途

    公开(公告)号:US06380137B1

    公开(公告)日:2002-04-30

    申请号:US09517487

    申请日:2000-03-02

    IPC分类号: C09K702

    摘要: The invention provides water-soluble copolymers without crosslinking, consisting of the following components: A 5-95% by weight of bivalent structural units derived from acrylamidopropenylmethylenesulfonic acid or its salts, B 1-45% by weight of bivalent structural units derived from open-chain N-vinylamides, C 1-45% by weight of bivalent structural units derived from cyclic N-vinyl-substituted amides, and if desired D 0-50% by weight of a further comonomer selected from the group consisting of acrylamide, acrylic acid and acrylonitrile, the components A to C and, if present, D adding up to 100% by weight.

    摘要翻译: 本发明提供不交联的水溶性共聚物,由以下组分组成:5-95重量%的衍生自丙烯酰胺基丙烯基甲基磺酸或其盐的二价结构单元,B 1-45重量%的衍生自开环的二价结构单元, 链状N-乙烯基酰胺,C 1-45重量%的衍生自环状N-乙烯基取代的酰胺的二价结构单元,如果需要,0-50重量%的另外的共聚单体,其选自丙烯酰胺,丙烯酸和 丙烯腈,组分A至C,如果存在,D加入至100重量%。

    Compositions for fracturing subterranean formations
    8.
    发明授权
    Compositions for fracturing subterranean formations 有权
    压裂地层的组成

    公开(公告)号:US06197730B1

    公开(公告)日:2001-03-06

    申请号:US09185120

    申请日:1998-11-03

    IPC分类号: C09K702

    摘要: A method of fracturing a subterranean formation which surrounds a well bore comprises the steps of providing a fracturing fluid, and injecting the fracturing fluid into the well bore at a pressure sufficient to form fractures in the subterranean formation which surrounds the well bore. The pressure is then released from the fracturing fluid, after which the fluid may be removed from the well and the well placed into production. The fracturing fluid comprises an aqueous liquid, a polysaccharide soluble or dispersible in the aqueous liquid in an amount sufficient to increase the viscosity of the aqueous liquid, an enzyme breaker which degrades the polysaccharide at a temperature above 180° F. Fracturing fluid compositions and enzyme breaker systems useful for carrying out the invention are also disclosed.

    摘要翻译: 压裂围绕井眼的地下地层的方法包括提供压裂流体的步骤,以及足以在围绕井眼的地层中形成裂缝的压力将压裂流体注入井眼。 然后压力从压裂液中释放出来,然后可以将流体从井中移出并将井放入生产中。 压裂流体包含含水液体,可溶于或分散于含水液体中的多糖,其量足以增加水性液体的粘度,该酶在大于180°F的温度下降解多糖。压裂液组合物和酶 还公开了可用于实施本发明的断路器系统。

    Use of alkoxylated surfactants and aluminum chlorohydrate to improve brine-based drilling fluids
    9.
    发明授权
    Use of alkoxylated surfactants and aluminum chlorohydrate to improve brine-based drilling fluids 失效
    使用烷氧基化表面活性剂和水合氯铝来改善基于盐水的钻井液

    公开(公告)号:US06194355B1

    公开(公告)日:2001-02-27

    申请号:US09248310

    申请日:1999-02-09

    IPC分类号: C09K702

    CPC分类号: C09K8/04 C09K8/12

    摘要: A drilling fluid having a brine base fluid, aluminum chlorohydrate as a viscosifying agent, an alkoxylated surfactant, and an amphoteric polymer encapsulant has been found to have excellent viscoelasticity and suspension characteristics. Surprisingly, it has been discovered that a synergistic effect is present between the aluminum chlorohydrate and the surfactant such that less of each component is required when both are used together to suspend the same amount of solids, than if one or the other is used separately.

    摘要翻译: 已经发现具有盐水基础流体,水合氯化铝作为增粘剂,烷氧基化表面活性剂和两性聚合物密封剂的钻井液具有优异的粘弹性和悬浮性。 令人惊奇的是,已经发现,在水合氯铝酸盐和表面活性剂之间存在协同效应,因此当两者都共同使用时悬浮相同量的固体物质需要较少的每种组分,这要比单独使用或另外使用一种。

    Anti-accretion additives for drilling fluids
    10.
    发明授权
    Anti-accretion additives for drilling fluids 失效
    用于钻井液的抗吸附添加剂

    公开(公告)号:US06803346B1

    公开(公告)日:2004-10-12

    申请号:US09622454

    申请日:2000-11-15

    IPC分类号: C09K702

    CPC分类号: C09K8/22 C09K2208/12

    摘要: Additives for drilling fluids, in particular for water-based drilling fluids are described which when added to the fluid at levels of up to 10% weight by volume reduces the accretion and bit-balling tendencies of shale cuttings exposed to said fluids. The additives are based on phosphonate chemistry, and are of the general class (I), wherein R, R′ and R″ are radicals exclusively containing H atoms or combinations of H, C, O or P atoms up to a maximum of 100 atoms.

    摘要翻译: 描述了用于钻井液的添加剂,特别是用于水基钻井液的添加剂,当以高达10重量%的量加入到流体中时,会降低暴露于所述流体的页岩切屑的吸积和钻头的倾向。 添加剂基于膦酸酯化学,并且是一般类(I),其中R,R'和R“是仅含有H原子或H,C,O或P原子的组合的自由基,最多达100 原子