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Policy Studies Journal, Volume 53, Issue 4, Page 852-875, November 2025.Abstract Collaboration in governing complex environmental challenges is the norm. However, collaboration does not necessarily deliver desirable outcomes, and the importance of forming collaborative networks that effectively address the challenges at hand has been emphasized in theory and practice.
Per Becker, Örjan Bodin
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Integrative Conservation, Volume 4, Issue 3, Page 362-380, September 2025.Occurrences of dust storms and long‐distance movement of dust across landscapes is constantly increasing in south Asia. This dust is expected to have profound impact on vegetation health and sustainability as dust may contribute to nutrient budgets of the forest ecosystems, while it could impart various stresses to the plants.
Shree P. Pandey +2 more
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Shiyou jixie, 2014 针对现有的偏心分注工具不能满足薄互层油藏小卡距细分注水、原K344型偏心封隔配水器不适应大斜度注水井分注的问题，研制了P2Y341-115型细分层封隔配水器。该工具将1个压缩式封隔器与2台偏心配水器的功能集成一体，实现多个连续薄夹层注水井的分注，并大幅提高测试调配效率。现场应用7口井，封卡最薄油层4.4 m，最大井斜31.75°，均完成了分层验封、分层流量测试及水嘴投捞，平均配注符合率达到89.8%，平均使用寿命达到1 a以上。
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, 2020 带孔插入密封检测工具对密封筒的定量验封对于油田实现分层注水具有重要意义,而定量验封需要研究验封时的缝隙流动流量、密封筒破损当量直径和压降之间的关系。本文利用室内试验对缝隙流动流量、压降和当量直径之间的关系进行了系统研究。研究结果表明,入口到上出口的压降随分流比的增大而增大,入口到下出口的压降随分流比的增大而减小;压降与缝隙流动的流量也有关,当流量增大,压降增大;压降随密封筒的破损当量直径增大而减小。本文的研究为石油工业分层开采定量验封提供了指导 ...
刘全刚 +6 more
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Policy Studies Journal, Volume 53, Issue 3, Page 701-722, August 2025.Abstract Despite the reality that advocates frequently expend significant resources to pass symbolic policies, this policy design has often been neglected by policy studies scholarship. We combine policy design and policy feedback theory to examine this oft overlooked policy design in practice using the case of California's human right to water law ...
Jenny Linder Rempel +1 more
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Shiyou jixie, 2014 针对长庆低渗透油藏精细分层注水特点，常规分注技术存在实时监控难以及测调过程复杂等问题，提出了数字式分层注水技术。该技术应用配水器集成孔板流量计、一体化可调水嘴、电机、验封短节、井下电源、通信模块及控制芯片等部件，实现了配水器的自动验封、自动调节、数据实时录取与存储和无线通信的功能，极大地提高了注水过程的自动化水平。通过分析油管的沿程流阻、水嘴和流量计的阻力损失，建立了数字式分层注水井注水的流动特性分析力学模型。利用该模型可以计算得出井下各层的注水压力及水嘴开度关系，进而优化注水参数，提高分层注水效果。
杨玲智 +3 more
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Ultrasound in Obstetrics &Gynecology, Volume 64, Issue 4, Page 470-479, October 2024.ABSTRACT Objectives Our aim was to examine the prenatal profiles of pregnancies affected by an atypical chromosomal aberration, focusing on pathogenic copy‐number variants (pCNVs). We also wanted to quantify the performance of combined first‐trimester screening (cFTS) and a second‐trimester anomaly scan in detecting these aberrations. Finally, we aimed
K. Gadsbøll +6 more
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Shiyou jixie, 2015 测调一体化分层注水技术测试调配效率高，已逐渐成为胜利油田分层注水主导工艺技术。结合油田油藏特征，胜利油田对测调一体化技术进行了改进和完善，并主要对配水器进行技术改进，设计了常规式、大压差式、免开式系列化可调配水器，满足了不同类型分层注水管柱的需求。同时针对高温高压注水需求开展了高温、高压密封材料优化研究，以满足120°、35 MPa高温高压注水需求；针对大斜度定向井，设计了测调仪器的滚轮式扶正装置，提高对井斜的适应性，满足井斜60°以内的测试调配。近年来 ...
李常友
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Shiyou jixie, 2015 冀东油田目前主要通过同位素法测吸水剖面来认识注水井的分层吸水状况，这种方法无法测出各不同渗透率小层的启动压力，测试结果不能有效指导注水井分注段的合理划分，为此开展了不动管柱分层测试工艺管柱研究。该管柱主要由液压安全接头、水力锚、测试阀、卡水封隔器和伸缩管等组成，通过卡水封隔器将所有待测层卡分开来，再经投球憋压控制测试阀自下而上逐层开启同时关闭下一层后进行测试，一趟管柱可完成3~5层施工。现场应用结果表明，该测试工艺管柱结构简单，坐封可靠，易于操作，测试数据真实反映了小层启动压力和吸水能力 ...
王金忠
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Shiyou jixie, 2015 目前的大斜度井和水平井分层注水管柱无法进行钢丝电缆作业，传统测调工艺无法实施，导致分层注水合格率较低。鉴于此，研究了电缆永置式井下测调技术，提出了一种适用于大斜度井和水平井分层注水的新工艺。采用该工艺可以实时监测注水层位，实现注水量的自动调节，无需钢丝电缆作业，解决了井斜超过60°井的测试调配问题；采用预置电缆技术，将测试组件与调节组件集成在井下测调工作筒内，可以实时对井下数据进行监测与控制。试验及应用结果表明，该工艺不受井斜限制，可以实现分层调配、参数实时监测和直读式验封，提高了作业效率 ...
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