会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 21. 发明授权
    • Sulfonated poly (vinyl aromatics) as fluid loss additives for salt
cement slurries
    • 磺化聚(乙烯基芳族化合物)作为盐水泥浆的流失助剂
    • US4601758A
    • 1986-07-22
    • US704818
    • 1985-02-25
    • Erik B. Nelson
    • Erik B. Nelson
    • C04B24/22C04B28/02C09K8/46C09K8/487
    • C09K8/487C04B24/22C04B28/02C09K8/46C04B2103/46
    • A salt water hydraulic cement slurry and method of use in oil and gas well cement jobs involving a novel fluid loss additive comprising an admixture of sulfonated aromatic polymers. An effective amount of an admixture of water soluble salts of a sulfonated styrene/maleic anhydride copolymer, sulfonated polystyrene, sulfonated polyvinyltoluene and sulfonated polynaphthalene/formaldehyde condensate when added to a salt water/Portland cement slurry provides fluid loss control to the Portland cement slurry at bottomhole circulating temperature between 80.degree. and 210.degree. F. Further, addition of and/or the replacement of the sulfonated polystyrene by a water soluble lignosulfonate further enhances the high temperature properties of the salt water cement slurry.One exception to this appears in British Pat. No. 2,080,812 which describes the use of very low molecular weight carboxymethylhydroxyethylcellulose polymers in combination with hydroxycarboxy acids as fluid loss additives for salt water cement slurries.
    • 一种盐水水硬性水泥浆和在油气井水泥作业中使用的方法,其涉及包含磺化芳族聚合物的混合物的新型流体损失添加剂。 当加入到盐水/波特兰水泥浆中时,有效量的磺化苯乙烯/马来酸酐共聚物,磺化聚苯乙烯,磺化聚乙烯基甲苯和磺化聚萘/甲醛缩合物的水溶性盐的混合物为波特兰水泥浆提供了流体损失控制 井底循环温度在80°至210°F之间。此外,通过水溶性木质素磺酸盐的加入和/或替代磺化聚苯乙烯进一步提高了盐水水泥浆的高温性能。 一个例外,这出现在英国Pat。 其描述了使用非常低分子量的羧甲基羟乙基纤维素聚合物与羟基羧酸的组合作为盐水泥浆的流失剂。
    • 25. 发明授权
    • Novel ferrofluids for use in cementing wells
    • 用于固井的新型铁磁流体
    • US4691774A
    • 1987-09-08
    • US798527
    • 1985-11-15
    • Erik B. Nelson
    • Erik B. Nelson
    • B01F13/08C04B14/30C04B14/34C04B28/02C04B40/02C09K8/42C09K8/46E21B33/16
    • E21B33/13B01F13/0809C04B14/30C04B14/34C04B28/02C04B40/0209C09K8/42C09K8/46B01F2215/0081
    • Novel cementitious and non-cementitious ferrofluids are disclosed which have properties making them suitable for use in cementing wells. The cementitious fluids comprise: (a) a hydraulic cement, (b) finely divided magnetic particles, (c) a bonding agent or a surfactant, and (d) a liquid medium. The binding agent or surfactant is present in the compositions in an amount sufficient to render the compositions stable in a magnetic field. When used in cementing wells, the cementitious ferrofluids are implaced in the annulus separating a casing from the formation in a wellbore by conventional techniques and the slurry is subsequently subjected to an activating magnetic field that causes movement of the magnetic particles in the slurry. The non-cementitious ferrofluids comprise: (a) finely divided magnetic particles, (b) stabilizing agent, and (c) a liquid medium. The movement of the magnetic particles results in a "scrubbing" action against the surface of the casing and the formation and a mixing of the slurry which helps displace any residual drilling mud. The net result is better bonding of the cement.
    • 公开了具有使其适用于固井的性质的新型水泥质和非水泥质铁磁流体。 水泥流体包括:(a)水硬性水泥,(b)细碎的磁性颗粒,(c)粘合剂或表面活性剂,和(d)液体介质。 粘合剂或表面活性剂以足以使组合物在磁场中稳定的量存在于组合物中。 当在固井中使用时,水泥质铁磁流体通过常规技术嵌入到在井筒中将壳体与地层分离的环形空间中,并且随后使浆料经受使磁性颗粒在浆料中移动的活化磁场。 非水泥质铁磁流体包括:(a)细分磁性颗粒,(b)稳定剂和(c)液体介质。 磁性颗粒的运动导致对套管表面的“擦洗”作用,以及泥浆的形成和混合,这有助于置换任何残留的钻井泥浆。 最终结果是水泥的粘结更好。
    • 26. 发明授权
    • High temperature expanding cement composition and use
    • 高温膨胀水泥组合物及用途
    • US4328036A
    • 1982-05-04
    • US218315
    • 1980-12-19
    • Erik B. NelsonLouis H. Eilers
    • Erik B. NelsonLouis H. Eilers
    • C04B7/00C04B28/02C04B28/18C09K8/46
    • C04B7/00C04B28/02C04B28/18C09K8/46
    • A hydratable cement composition useful for preparing a pectolite-containing expanding cement at temperatures above about 150.degree. C. comprising a water soluble sodium salt of a weak acid, a 0.1 molar aqueous solution of which salt has a pH of between about 7.5 and about 11.5, a calcium source, and a silicon source, where the atomic ratio of sodium to calcium to silicon ranges from about 0.3:0.6:1 to about 0.03:1:1; aqueous slurries prepared therefrom and the use of such slurries for plugging subterranean cavities at a temperature of at least about 150.degree. C.The invention composition is useful for preparing a pectolite-containing expansive cement having about 0.2 to about 2 percent expansion, by volume, when cured at at least 150.degree. C.
    • 一种可水合的水泥组合物,其用于在高于约150℃的温度下制备含有起球沸石的膨胀水泥,其包含弱酸的水溶性钠盐,其盐的pH为约7.5至约11.5的0.1摩尔水溶液 ,钙源和硅源,其中钠与钙与硅的原子比范围为约0.3:0.6:1至约0.03:1:1; 由此制备的水性浆料以及这种浆料用于在至少约150℃的温度下堵塞地下空腔。本发明组合物可用于制备具有约0.2至约2%(体积)膨胀的膨润土, 当在至少150℃下固化时