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    • 5. 发明申请
    • Fluid Loss Control Composition and Method of Using the Same
    • 流体损失控制组合物及其使用方法
    • US20140073538A1
    • 2014-03-13
    • US13611187
    • 2012-09-12
    • Rajesh Kumar SainiFeng Liang
    • Rajesh Kumar SainiFeng Liang
    • C09K8/00
    • C09K8/035C09K8/512
    • Fluid loss materials including carboxymethylcellulose and zirconium-based crosslinkers may be employed as fluid loss materials in methods of treating subterranean formations. One method includes providing a treatment fluid including carboxymethylcellulose (CMC) and a crosslinker including zirconium, wherein the carboxymethylcellulose has a degree of substitution in a range of from about 0.5 to about 2.5, wherein the crosslinker including zirconium includes one selected from the group consisting of ammonium zirconium fluoride, zirconium 2-ethylhexanoate, zirconium acetate, zirconium neodecanoate, zirconium acetylacetonate, tetrakis(triethanolamine) zirconate, zirconium carbonate, ammonium zirconium carbonate, zirconyl ammonium carbonate, zirconium complex of hydroxyethyl glycine, zirconium malonate, zirconium propionate, zirconium lactate, zirconium acetate lactate, and zirconium tartrate, and placing the treatment fluid in a subterranean formation, wherein the treatment fluid controls fluid loss in a permeable portion of the subterranean formation penetrated by a wellbore.
    • 包括羧甲基纤维素和锆基交联剂在内的流体损失材料可用作处理地下地层的方法中的流体损失材料。 一种方法包括提供包括羧甲基纤维素(CMC)和包含锆的交联剂的处理流体,其中羧甲基纤维素的取代度为约0.5至约2.5,其中包括锆的交联剂包括选自以下的一种: 氟化锆锆,2-乙基己酸锆,乙酸锆,新癸酸锆,乙酰丙酮酸锆,四(三乙醇胺)锆酸锆,碳酸锆,碳酸锆锆,碳酸锆铵,羟乙基甘氨酸锆络合物,丙二酸锆,丙酸锆,乳酸锆, 乙酸锆酸乙酯和酒石酸锆,并将处理流体置于地层中,其中处理流体控制渗透在井底中的渗透部分中的流体损失。
    • 6. 发明授权
    • Method and device for downlink cooperation retransmission in a relay station
    • 中继站下行协同重传的方法和装置
    • US08654781B2
    • 2014-02-18
    • US13257626
    • 2010-03-23
    • Feng LiangFeng BiMing YuanJin YangShuanshuan Wu
    • Feng LiangFeng BiMing YuanJin YangShuanshuan Wu
    • H04J3/16
    • H04B7/15592H04B7/15542H04L1/0067H04L1/1893H04L5/0053H04L2001/0097
    • The invention discloses a method and apparatus for relay station downlink cooperative retransmission, wherein said method comprises: a relay station carrying out physical layer processing in advance on data which requires retransmitting according to different scenarios associated with different possible number of available wireless resources for retransmitting data in a retransmission subframe, generating corresponding OFDM signals, and monitoring the PCFICH of the retransmission subframe, and according to the monitoring result, selecting an OFDM signal which is corresponding to the determined number of available wireless resources from said OFDM signals to carry out retransmission transmitting. The present invention can efficiently solve the problem that the number of wireless resources varies during downlink retransmitting data and the relay station cooperative communication is unable to be carried out normally, without introducing any extra overhead and time delay, and without the control signaling, thus reducing the system complexity.
    • 本发明公开了一种用于中继站下行协同重传的方法和装置,其中所述方法包括:中继站预先对需要根据不同可能数量的可用无线资源的不同情况进行重传的数据进行物理层处理,以重传数据 在发送子帧中生成对应的OFDM信号,监视重发子帧的PCFICH,根据该监视结果,从所述OFDM信号中选择与确定的可用无线资源数相对应的OFDM信号,进行重传发送 。 本发明可以有效地解决下行重传数据期间无线资源数量变化,中继站协作通信不能正常执行的问题,而不引入任何额外的开销和时间延迟,并且没有控制信令,从而减少 系统复杂性。
    • 10. 发明授权
    • Compositions for improving thermal conductivity of cement systems
    • 用于改善水泥系统导热性的组合物
    • US08408303B2
    • 2013-04-02
    • US12566261
    • 2009-09-24
    • B. Raghava ReddyFeng Liang
    • B. Raghava ReddyFeng Liang
    • E21B33/14
    • C04B14/386C04B28/02C09K8/467
    • A method of cementing in a subterranean formation comprises placing a cement composition comprising a non-metallic thermally conductive fiber into the subterranean formation, and allowing the composition to set therein, wherein the non-metallic thermally conductive fiber has a thermal conductivity greater than about 500 W/m·K. Another method of cementing in a subterranean formation comprises providing a cement composition comprising a pitch-based carbon fiber, a hydraulic cement material, and water, placing the cement composition in a formation, and allowing the cement composition to set therein, wherein said pitch-based carbon fiber has a density of from about 2.0 grams/cc to about 2.3 grams/cc. A cement composition comprising a cementitious material, water, and a non-metallic thermally conductive fiber having a thermal conductivity greater than about 500 W/m·K, or a pitch-based carbon fiber having a density of from about 2.0 grams/cc to about 2.3 grams/cc.
    • 在地下地层中固井的方法包括将包含非金属导热纤维的水泥组合物放置在地层中,并使组合物置于其中,其中非金属导热纤维的导热率大于约500 W / m·K。 在地下地层中固井的另一种方法包括提供包括沥青基碳纤维,水硬性水泥材料和水的水泥组合物,将水泥组合物置于地层中,并使水泥组合物置于其中,其中所述沥青 - 基于碳纤维的密度为约2.0克/厘米3至约2.3克/厘米3。 一种水泥组合物,其包含水泥质材料,水和导热率大于约500W / m·K的非金属导热纤维,或密度为约2.0g / cc至 约2.3克/立方厘米。