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    • 6. 发明申请
    • PROVISION OF VISCOUS COMPOSITIONS BELOW GROUND
    • 接近地面粘度组合物的施工
    • WO2010082113A2
    • 2010-07-22
    • PCT/IB2010/000045
    • 2010-01-12
    • SCHLUMBERGER TECHNOLOGY B.V.SCHLUMBERGER HOLDINGS LIMITEDSCHLUMBERGER CANADA LIMITEDSERVICES PETROLIERS SCHLUMBERGERPRAD RESEARCH AND DEVELOPMENT LIMITEDTURNER, MarkTUSTIN, GaryVATRY, ChristelleSULLIVAN, Philip
    • TURNER, MarkTUSTIN, GaryVATRY, ChristelleSULLIVAN, Philip
    • E21B43/16E21B43/26E21B43/267
    • C09K8/685C09K8/40C09K8/512C09K8/516C09K8/52C09K8/5756C09K8/602C09K8/70C09K8/887
    • A method of providing a viscous emulsion at a subterranean location accessible via a wellbore, begins by providing an aqueous/aqueous emulsion comprising two aqueous solutions which, at surface temperature and pressure, are able to co-exist as separate aqueous phases in contact with each other. The two phases contain respective solutes which are sufficiently incompatible that they cause phase separation. The dispersed phase is rich in one solute, which may be a thickening polymer, while continuous phase is rich in a second solute, which may comprise surfactant. A hydrophobic liquid is dispersed in this emulsion to become the dispersed phase of a viscous emulsion whose continuous phase is provided by the aqueous/aqueous emulsion. The hydrophobic liquid and the aqueous/aqueous emulsion may be pumped separately down the wellbore to the subterranean location, and allowed to mix there so as to form the viscous emulsion at the subterranean location. On mixing, surfactant from the aqueous/aqueous emulsion may migrate to the oil/water interface, allowing the aqueous phases to become one phase with the result that the emulsion is further thickened by any thickening polymer in its composition. Even more thickening can be achieved by crosslinking the thickening polymer.
    • 在通过井孔可接近的地下位置提供粘性乳液的方法开始于提供包含两种水溶液的水性/水性乳液,这些水溶液在表面温度和压力下能够作为与每个相接触的分开的水相共存 其他。 这两个相含有各自的溶质,它们是相互不相容的,它们引起相分离。 分散相富含一种溶质,其可以是增稠聚合物,而连续相富含第二溶质,其可以包含表面活性剂。 疏水性液体分散在该乳液中,成为其连续相由水/乳液提供的粘性乳液的分散相。 疏水性液体和水性/水性乳液可以在井眼下分别泵送到地下位置,并允许在那里混合,以便在地下位置形成粘性乳液。 在混合时,来自水/乳液的表面活性剂可以迁移到油/水界面,使水相变成一相,结果乳液在其组成中被任何增稠聚合物进一步增稠。 通过交联增稠聚合物可以获得更多的增稠。
    • 9. 发明公开
    • DETERMINATION OF DOWNHOLE PRESSURE WHILE PUMPING
    • BESTIMMUNG DES BOHRLOCHDRUCKSWÄHRENDDES PUMPENS
    • EP2134922A1
    • 2009-12-23
    • EP08732883.7
    • 2008-03-26
    • Services Pétroliers SchlumbergerSchlumberger Holdings LimitedSchlumberger Technology B.V.Prad Research and Development Ltd
    • COATES, Richard TimothyMILLER, Douglas E.SULLIVAN, PhilipAUZERAIS, FrancoisHABASHY, Tarek M.
    • E21B47/04E21B47/06E21B47/18
    • E21B47/04E21B47/06E21B47/18
    • Tubewaves are used to transmit an indication of the depth at which a condition is detected in a well. In particular, the depth is calculated based on the difference in arrival time at the surface of a first tubewave which propagates directly upward in the borehole and a second tubewave which initially travels downward and is then reflected upward. The tubewaves may be generated by a canister designed to implode at a certain pressure. After being introduced into the flowline at an above ground inlet, the canister is carried downhole by gravity and the fluid being pumped. When the canister reaches a depth at which its pressure tolerance is exceeded, it implodes and generates the tubewaves. An analyzer at the surface detects the tubewaves with a hydrophone array and generates a pressure versus depth profile of the well, i.e., one data point for each implosion. Canisters may be acoustically tagged by controlling volume and orifice size in order to generate tubewaves having particular frequency and amplitude characteristics. Canisters may also be configured to produce multiple implosions, e.g., one implosion at each of a selection of different pressures. Canisters may also be equipped with triggering and arming mechanisms, and may generate tubewaves in response to conditions other than a particular pressure.
    • 滚筒用于传输在井中检测到条件的深度的指示。 特别地,深度是基于在钻孔中直接向上传播的第一管风管的表面的到达时间的差异以及最初向下行进并然后向上反射的第二管道涡流来计算的。 管道可以由设计成在一定压力下膨胀的罐产生。 罐通过重力运送在井下,并且被泵送的流体。 在超过其压力公差的深度处,它会破坏并产生管道。 表面上的分析仪检测管道,并产生井的压力与深度分布。 罐可以被声学标记,以便产生具有特定频率和振幅特性的波管。 罐也可能被配置为产生多个内爆。