Results 11 to 20 of about 10,121 (107)
Gongye shui chuli, 2023 采出水回注是国内处理气田采出水的有效手段，但是，由于不同工艺处理效果存在差异，导致采出水中未被处理的部分悬浮物对回注地层造成不同程度的堵塞伤害。运用激光粒度衍射分析技术、室内物理流动模拟实验结合核磁共振技术，开展采出水回注室内模拟实验，定量评价采出水悬浮物对岩心样品的伤害程度，明确不同工艺处理效果，揭示回注地层堵塞伤害机理。实验结果表明，气田采出水悬浮物粒径尺度是影响回注地层堵塞程度的主控因素，发生堵塞伤害的悬浮物粒径主要分布在7.65~52.62 μm；采用“破乳+油水分离+沉降除油+气浮+旋流分离 ...
杜康 +6 more
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Gongye shui chuli, 2021 为研究致密气采出水回注的可行性，以鄂尔多斯东缘盆地某致密气区块采出水及石盒子组盒8段储层为研究对象，通过水质配伍、黏土膨胀岩心伤害及储层敏感性实验，综合分析采出水水质对回注储层的影响。结果表明：初期采出水经处理后，混合结垢量最大为54 mg/L，配伍性良好；水样无论是单独回注还是混合回注，其黏土膨胀率最大为21.78%，均不会引起黏土膨胀。采出水中悬浮物和含油质量浓度分别限制在10 mg/L和6 mg/L以下，对储层的伤害率低于20%；致密砂岩储层敏感性对回注水主要表现为中等偏弱速敏、弱酸敏。
黄伟, 袁进, 司雷霆, 张弛
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Zhejiang Daxue xuebao. Lixue ban, 2022 针对注水开发的多层砂岩油藏分层动态分析难度大等问题，在常规井层开发指标计算基础上，结合动、静态劈分方法，综合考虑渗透率、孔隙度、地层系数、含水饱和度、位置系数、措施系数及注水量系数，提出了一种既可将油、水井作为统一整体，又可对小层、方向流动分量开发指标进行定量计算的体现渗流力学本质的方法。用大庆油田N2-O1井组的产液剖面资料进行验证。结果表明，所提方法的计算结果与测量结果吻合度较高，精度平均值达75.11%。用该方法计算开发指标，适用性强，能较真实地反映各小层、各方向的产液情况，对现场应用具有指导意义。
ZHANGJicheng(张继成) +4 more
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Dizhen xuebao, 2021 工业开采注水能导致现存断层活化，从而诱发大量的破坏型地震。因此，研究注水作用下断层的动力学响应对探索诱发地震的力学机理具有重要的意义。本文基于孔弹性弹簧-滑块模型，采用多孔介质弹性耦合数值模拟，计算分析了三类典型注水方式（上升型、迅速上升/下降型和间歇型）对断层稳定性的影响。研究结果表明：随着流体的不断注入，断层内部流体压力会经过缓慢上升、迅速上升和稳定上升三个阶段。针对于不同的注水方式，这三个阶段并不完全相同，体现形式存在差异；在注水方式相同的条件下，储层的渗透率越小，井口附近流体压力越大 ...
Aiyu Zhu +5 more
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L2 Chinese Grammatical Acquisition and Processing: A Substantive and Methodological Review
International Journal of Applied Linguistics, EarlyView.ABSTRACT This study presents a systematic review of 92 empirical studies on Chinese as a second language (CSL) in grammatical processing and development, synthesizing their substantive foci and methodological characteristics. The results reveal consistent scholarly attention to cross‐linguistic topics, with less focus on features that are distinctively
Shaohua Fang, Yi Xu, Jiani He, Jia Wang
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New Phytologist, EarlyView.Design of the VPDrought experiment in a Scots pine (Pinus sylvestris) forest at the Pfynwald research platform. Summary Atmospheric and soil drought are major, yet typically confounded, drivers of tree stress. Rising vapor pressure deficit (VPD) may impair forest function independently of soil moisture decline, yet stand‐scale experimental separation ...
Marcus Schaub +9 more
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Policy Studies Journal, Volume 54, Issue 4, November 2026.ABSTRACT This paper examines how governments navigate policy legitimacy during crises through three distinct discursive processes: legitimization, delegitimization, and blame avoidance. Using a sequential mixed‐methods design, the study analyzes Denmark's decision to cull all mink during the COVID‐19 pandemic. The quantitative analysis of 947 newspaper
Olivier Rubin +3 more
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Gongye shui chuli, 2023 采用高效紧凑型气浮技术对现有采出水处理设施进行升级改造，已经成为海上油田解决水处理设施满负荷甚至超负荷运行的重要手段。以提高单体设备处理效率和稳定性为目标，开展了浅层沉降技术强化立式气浮设备的初步结构设计，采用计算流体力学耦合群体平衡模型和实验测试等手段，研究探讨了浅层沉降强化立式气浮设备内浅层沉降流场分布特性和油水分离特性，并利用正交实验和单因素实验等方法分析了含油污水流量、污水水压、注气比、分流比等因素对浅层沉降强化立式气浮装置油水分离效率的影响规律。研究结果表明，较常规立式气旋浮设备等气浮设备 ...
潘亿勇, 张健
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Behavioral interventions to reduce demand for threatened freshwater turtles as pets
Conservation Biology, Volume 40, Issue 5, October 2026.Abstract Growing demand for freshwater turtles as pets has fueled illegal trade and accelerated wild population declines, underscoring the need for theory‐based demand‐reduction interventions. We conducted a three‐part randomized controlled trial with active turtle keepers (n = 1800) in China to test conservation‐ and legality‐framed messages by ...
Wuji Zheng +9 more
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Rare Metals, Volume 45, Issue 9, September 2026.ABSTRACT Achieving rapid and selective separation of anode and cathode materials remains a critical challenge in the recycling of spent lithium‐ion batteries. This study develops a microwave‐enhanced flotation strategy for the efficient recovery of cathode and anode materials.
Peiyuan Ye +5 more
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