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  1. 41

    Characterization of sedimentary and flow characteristics of shallow water delta front sand bodies: Xingshugang Oil Field, Daqing placanticline, Songliao Basin by Duanchuan LÜ, Jinpeng SONG

    Published 2020-01-01
    “…The sedimentary and flow characteristics of distributary channel microfacies and sheet sand microfacies in shallow water delta front subfacies in the Daqing placanticline of the Songliao Basin were characterized by using core and logging data of continuously cored wells, relative permeability test data, grain size analysis, scanning electron microscopy and mercury injection data under reservoir conditions. …”
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  2. 42

    Experimental study on surface-active polymer flooding for enhanced oil recovery: A case study of Daqing placanticline oilfield, NE China by Qiannan YU, Yikun LIU, Shuang LIANG, Shuai TAN, Zhi SUN, Yang YU

    Published 2019-12-01
    “…Experiments on surface-active polymer flooding for enhanced oil recovery were carried out by detection analysis and modern physical simulation technique based on reservoirs and fluids in Daqing placanticline oilfield. The experimental results show that the surface-active polymer is different from other common polymers and polymer-surfactant systems in molecular aggregation, viscosity and flow capacity, and it has larger molecular coil size, higher viscosity and viscosifying capacity, and poorer mobility. …”
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  3. 43

    Wear analysis and life prediction of sucker rod and tubing under ternary emulsion lubrication in Daqing oilfield: a case study in block H by Chengting Liu, Chuanfeng Hu, Tian Chen, Zhao Yang, Luna Wang

    Published 2023-09-01
    “…Abstract Daqing Oilfield as the world’s largest application area of alkali–surfactant–polymer (ASP) flooding, in recent years, with the increase in aging wells, the eccentric wear and deformation of sucker rod and pipe during oil production has become more and more serious. …”
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    Flow capacity and ice cap stability of river channel in the Daqing River Basin of the South-to-North water diversion project during the ice period by Qiuyu Bo, Wuqun Cheng, Tong Sun

    Published 2022-05-01
    “…Located in Baoding, northern China’s Hebei Province, the Daqing River Basin faces a nonnegligible problem: the prevention and control of ice damage in the South-to-North Water Diversion Project (SNWDP) during the ice period. …”
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    Carbon and oxygen isotopic characteristics and uranium mineralization significance of the sandstone-type uranium deposit in the Sifangtai Formation at the southern margin of Daqing placanticline in Songliao Basin by Ningning Cai, Niuniu Zou, Yong Fu, Shuaichao Wei, Jianguo Li, Chao Tang, Jialin Wei

    Published 2021-05-01
    “…To further explore the diagenetic environment, uranium precipitation mechanism and mineralization mechanism of the sandstone type uranium deposit in Sifangtai Formation on the southern margin of Daqing placanticline in Songliao Basin, the systematic research has been by drilling core observation, rock slice, sandstone uranium containing carbonate cement carbon and oxygen isotopic analysis of the sandstone rock types in the study area, the types of carbonate cements, diagenetic stage and systemic research on the carbon and oxygen isotopic been characteristics, The results show that the uraniferous sandstone rock types are feldspar lithic sandstone and lithic feldspar sandstone, carbonate cement being divided into three periods.For the first time and second time, the priority is given to cement, including calcite, ferroan calcite, see very small amounts of iron dolomite.The value of δ13CPDB is -22.45‰--13.65‰, with an average value of -18.00‰.The value of δ18OPDB is -17.56‰--9.46‰, with an average value of -13.52‰, revealing that there are some organic matters involved.The paleosalinity Z value is between 75.98 and 90.97, which is fresh water deposit.The paleotemperature is between 67.31℃ and 94.92℃, and the diagenetic environment is judged to be in the stage A of early-middle diagenesis based on the above rock features, cementite types and diagenesis.The comprehensive analysis shows that the compaction and cementation of the sadnstone during the early diagenesis stage reduce the porosity of the uranium-bearing sandstone and inhibits the migration of oxygen-rich uranium-bearing fluid.As diagenesis and bruial depth increase, higher organic matter maturity in the hot decarboxylate effect, and the compaction of adsorbed water to form acid solution were formed by dissolution of the feldspar, carbonate cement secondary pore, in order to increase sandstone porosity and promote oxygen rich fluid infiltration of uranium migration.Underlying oil and gas with upward dissipation through fracture provide stratum with reducing agent, making uranium be precipitated and enriched large scale at the bottom of Sifangtai Formation.…”
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  8. 48

    Establishment and Application of a Pattern for Identifying Sedimentary Microfacies of a Single Horizontal Well: An Example from the Eastern Transition Block in the Daqing Oilfield, Songliao Basin, China by Guangjuan Fan, Ting Dong, Yuejun Zhao, Yalou Zhou, Wentong Zhao, Jie Wang, Yilong Wang

    Published 2023-10-01
    “…Therefore, a comprehensive method combining the data of both horizontal and vertical wells was established to identify sedimentary microfacies of horizontal wells and applied to a single horizontal well in the Daqing oilfield in China’s Songliao Basin. The results identified the study area as a delta sedimentary environment, mainly subdivided into four microfacies types: a distributary channel, the main overbank sand, the overbank sand, and an interdistributary bay. …”
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