潜油电泵井是高含水期油田采油的有效方式之一。电泵井供液不足、产能下降会导致油井负载与电泵机组不匹配、能耗升高、举升效率下降甚至电动机欠载停机等问题,进而影响机组使用寿命。为解决由于油井产液能力不足造成的诸多问题,通过优...潜油电泵井是高含水期油田采油的有效方式之一。电泵井供液不足、产能下降会导致油井负载与电泵机组不匹配、能耗升高、举升效率下降甚至电动机欠载停机等问题,进而影响机组使用寿命。为解决由于油井产液能力不足造成的诸多问题,通过优化电泵井参数、应用变频调速技术,百米吨液耗电可降低0.5 k Wh;应用井口液量反馈技术在减少停机的同时可降低耗电0.03 k Wh;通过合理转换举升方式可降低耗电1.8 k Wh,满足了电泵机组高效低耗的生产运行要求。采用这些节能技术为低产低沉没度电泵井的正常生产提供了一条新途径。展开更多
During seismic data acquisition, a high-sensitivity geophone with a high inherent frequency can increase high frequency energy by suppressing low frequency signals. This could cause a worse response at low frequencies...During seismic data acquisition, a high-sensitivity geophone with a high inherent frequency can increase high frequency energy by suppressing low frequency signals. This could cause a worse response at low frequencies. If the advantages of high-sensitivity data and conventional data are combined, the effective bandwidth will be broadened. Considering this, we propose a partial frequency band match filtering method which can combine the advantages of both high frequency and conventional frequency ranges. By introducing Ricker wavelets with different dominant frequencies and amplitudes, we established a theoretical model which possesses characteristics of both types of seismic data and demonstrates the feasibility of the partial frequency band match filtering method. A test using single shot records shows the effectiveness of this method for widening the effective frequency band.展开更多
文章设计了一款可以兼容北斗、GPS的信号转发器。该信号转发器采用集总参数的匹配方式,选用英飞凌公司的BFP740ESD芯片,用ADS软件进行设计、仿真、优化,实现了在1.555~1.58 GHz的频带内,增益在40 d B以上,输入输出反射系数小于-17 d B...文章设计了一款可以兼容北斗、GPS的信号转发器。该信号转发器采用集总参数的匹配方式,选用英飞凌公司的BFP740ESD芯片,用ADS软件进行设计、仿真、优化,实现了在1.555~1.58 GHz的频带内,增益在40 d B以上,输入输出反射系数小于-17 d B的两级小信号高增益放大器的设计。展开更多
文摘潜油电泵井是高含水期油田采油的有效方式之一。电泵井供液不足、产能下降会导致油井负载与电泵机组不匹配、能耗升高、举升效率下降甚至电动机欠载停机等问题,进而影响机组使用寿命。为解决由于油井产液能力不足造成的诸多问题,通过优化电泵井参数、应用变频调速技术,百米吨液耗电可降低0.5 k Wh;应用井口液量反馈技术在减少停机的同时可降低耗电0.03 k Wh;通过合理转换举升方式可降低耗电1.8 k Wh,满足了电泵机组高效低耗的生产运行要求。采用这些节能技术为低产低沉没度电泵井的正常生产提供了一条新途径。
基金financially supported by the National Natural Science Foundation of China(No.41104072)College Students Science and Technology Innovation Activity Plan in Zhejiang Province(No. 2012R401214)
文摘During seismic data acquisition, a high-sensitivity geophone with a high inherent frequency can increase high frequency energy by suppressing low frequency signals. This could cause a worse response at low frequencies. If the advantages of high-sensitivity data and conventional data are combined, the effective bandwidth will be broadened. Considering this, we propose a partial frequency band match filtering method which can combine the advantages of both high frequency and conventional frequency ranges. By introducing Ricker wavelets with different dominant frequencies and amplitudes, we established a theoretical model which possesses characteristics of both types of seismic data and demonstrates the feasibility of the partial frequency band match filtering method. A test using single shot records shows the effectiveness of this method for widening the effective frequency band.
