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TK406H侧钻短半径水平井钻井工艺技术 被引量:1
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作者 何伟国 《新疆石油学院学报》 2002年第3期51-54,共4页
TK40 6H侧钻短半径水平井是西北石油局在塔河油田利用已钻无产能直井井眼侧钻钻水平井而布署的第一批短半径水平井 ,也是国内目前已钻的最深的短半径水平井 ,设计侧钻造斜井深在 5 30 0m以下 ,施工难度大 ,该批短半径水平井的钻成并获... TK40 6H侧钻短半径水平井是西北石油局在塔河油田利用已钻无产能直井井眼侧钻钻水平井而布署的第一批短半径水平井 ,也是国内目前已钻的最深的短半径水平井 ,设计侧钻造斜井深在 5 30 0m以下 ,施工难度大 ,该批短半径水平井的钻成并获得良好的产能 ,使国内水平井钻井技术迈上了新的台阶。本文主要从该油田短半径水平井钻井的技术难点入手 ,对TK40 6H侧钻短半径水平井的设计和施工进行了分析和阐述 ,并通过主要工艺技术分析 。 展开更多
关键词 TK406H 侧钻 短半径水平井 石油钻井
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Innovative or conservative?How clan culture shapes bank digital transformation in China
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作者 Jinxuan Zhao Meixu Ren 《China Journal of Accounting Research》 2025年第2期108-129,共22页
How culture affects banks’digital transformation(BDT)is understudied.We discover that clan culture inhibits BDT in China.Clan culture’s short-radius trust requires banks to have more physical branches and employees ... How culture affects banks’digital transformation(BDT)is understudied.We discover that clan culture inhibits BDT in China.Clan culture’s short-radius trust requires banks to have more physical branches and employees to establish trust,and its risk aversion reduces banks’willingness to bear risks,inhibiting BDT.Resource pooling within clans attenuates the financing constraints and reduces the credit demand of enterprises;households seek more credit through informal channels,limiting their reliance on bank loans and inhibiting BDT from the demand side.Developing the institutional environment and generalized trust as well as demographic change can attenuate these negative effects.Overall,we clarify how informal institutional factors inhibit BDT,enriching research on clan culture and modern financial development. 展开更多
关键词 Clan culture Bank digital transformation short-radius trust Institutional environment
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