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| 1 | Quantitative evaluation methods for waterflooded layers of conglomerate reservoir based on well logging data显示文摘The rapid changing near source, multi-stream depositional environment of conglomerate reservoirs leads to severe heterogeneity, complex lithology and physical properties, and large changes of oil layer resistivity. Quantitative evaluation of water-flooded layers has become an important but difficult focus for secondary development of oilfields. In this paper, based on the analysis of current problems in quantitative evaluation of water-flooded layers, the Kexia Group conglomerate reservoir of the Sixth District in the Karamay Oilfield was studied. Eight types of conglomerate reservoir lithology were identified effectively by a data mining method combined with the data from sealed coring wells, and then a multi-parameter model for quantitative evaluation of the water-flooded layers of the main oil-bearing lithology was developed. Water production rate, oil saturation and oil productivity index were selected as the characteristic parameters for quantitative evaluation of water-flooded layers of conglomerate reservoirs. Finally, quantitative evaluation criteria and identification rules for water-flooded layers of main oil-bearing lithology formed by integration of the three characteristic parameters of water-flooded layer and undisturbed formation resistivity. This method has been used in evaluation of the water-flooded layers of a conglomerate reservoir in the Karamay Oilfield and achieved good results, improving the interpretation accuracy and compliance rate. It will provide technical support for avoiding perforation of high water-bearing layers and for adjustment of developmental programs. | Tan Fengqi Li Hongqi Xu Changfu Li Qingyuan Peng Shouchang | 2010 | Petroleum Science2010，7，4： | 21 |
| 2 | Micro-geological causes and macro-geological controlling factors of low-resistivity oil layers in the Puao Oilfield显示文摘Low-resistivity oil layers are often missed in logging interpretation because of their resistivity close to or below the resistivity of nearby water layers.Typical low-resistivity oil layers have been found in the past few years in the Putaohua reservoir of the Puao Oilfield in the south of the Daqing placanticline by detailed exploration.Based on a study of micro-geological causes of low-resistivity oil layers,the macro-geological controlling factors were analyzed through comprehensive research of regional depositional background,geological structure,and oil-water relations combined with core,water testing,well logging,and scanning electron microscopy data.The results showed that the formation and distribution of Putaohua low-resistivity oil layers in the Puao Oilfield were controlled by depositional environment,sedimentary facies,diagenesis,motive power of hydrocarbon accumulation,and acidity and alkalinity of reservoir liquid.The low-resistivity oil layers caused by high bound-water saturation were controlled by deposition and diagenesis,those caused by high free-water saturation were controlled by structural amplitude and motive power of hydrocarbon accumulation.Those caused by formation water with high salinity were controlled by the ancient saline water depositional environment and faulted structure and those caused by additional conductivity of shale were controlled by paleoclimate and acidity and alkalinity of reservoir liquid.Consideration of both micro-geological causes and macro-geological controlling factors is important in identifying low-resistivity oil layers. | Tan Fengqi Li Hongqi Liu Hongtao Jiang Fucong Yu Hongyan | 2009 | Petroleum Science2009，6，3： | 5 |
| 3 | Present Situation and Technical Developing Tendency of Shale Gas Development in China显示文摘1 Introduction American shale gas production in 2005 year is 194×108m3 and it rapidly growth to 2600×108m3 in 2014 year,the successful development of shale gas change American energy supply pattern and make important influence to global energy supply and geopolitics(Daniel et al.,2007).At present China is a country with rich coal,lack oil | TAN Fengqi JU Yiwen XU Houwei | 2015 | Acta Geologica Sinica(English Edition)2015，89，A01： | 4 |
| 4 | Nano-Geology and Unconventional Oil and Gas显示文摘Numerous Striking achievements have been made in micro and macro geology after the development for hundreds of years.Two trends branches of geology are divided into microcosmic nano-geology and macroeconomic astrono-geology with the enormous technology progress.The unique characteristics related to the nano-particles and nano-pores may be significant | JU Yiwen LU Shuangfang SUN Yan TAN Fengqi WANG Guochang HAN Ku BAO Yuan LI Qingguang | 2015 | Acta Geologica Sinica(English Edition)2015，89，A01： | 1 |
| 5 | Single event transient characterization of SiGe HBT by SPA experiment and 3-D process simulation显示文摘The single-photon absorption induced single event transient in the silicon-germanium heterojunction bipolar transistor is investigated.The laser wavelength and bias condition have been proven to have significant impacts on the characterization of the single event transient(SET) response of the device by two-dimensional(2-D) raster scanning.After optical analytical calculation,the laser-induced charge distribution is well-embedded in the 3-D TCAD process simulation conducted to explore the underlying physical mechanism.In addition to the ion shunt effect,the excess electron injection from the emitter to the base could play a vital role in the SET peak amplitude and charge collection.The impact of the metal layer on the SPA experimental results is also determined by establishing a figure of merit that will help researchers estimate the laser-induced transient sensitivity of devices with metal layer blocking. | PAN XiaoYu GUO HongXia FENG YaHui LIU YiNong ZHANG JinXin LI Zhuang LUO YinHong ZHANG FengQi WANG Tan ZHAO Wen DING LiLi XU JingYan | 2022 | Science China(Technological Sciences)2022，65，5： | 0 |
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