Results 1 to 10 of about 13,610 (102)
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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Gongye shui chuli, 2016 为积极响应渤海海域清洁生产的倡议，进一步保护海洋环境，提出将海上平台水质较好的灰水处理后经由平台注水系统回注地层的新思路。采用Scalechem软件，模拟预测灰水回注过程中在生产处理流程和注水层位的结垢趋势，并通过实验分析灰水回注对生产处理流程的影响，同时提出应对措施。研究结果表明海上平台灰水回注可行。灰水回注可减少70%以上的生活污水排放量，从而削减生活污水的COD排放总量。
高鹏, 周义, 高磊
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Dianci bileiqi, 2020 开展地网冲击特性测试需搭建冲击放电回路,试验回路布置的差异会对地网冲击特性测试产生较大影响。在分析现有接地装置冲击试验系统构成的基础上,搭建试验回路对110 kV变电站地网进行了现场试验,研究了注流点对地网冲击特性的影响,并通过仿真计算研究了回流点对地网冲击特性的影响。试验结果表明,试验回路中注流点、回流点的选择会明显影响地网电位分布和电流的大小。在雷电冲击下地网高电位区域会集中在注流点附近,远离注流点的区域地网电位分布较均匀,注流点附近区域的地网散流变化大,远离注流点区域的地网散流较平均。仿真结果表明,
黄佳瑞 +4 more
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Conservation Biology, EarlyView.Abstract Reversing ongoing biodiversity loss requires effectively managing anthropogenic threats. Although conservation actions can mitigate these threats, prioritizing and targeting such actions remain challenging because species respond differently depending on the nature of the threats and their biological traits.
Camila Guerrero‐Pineda +3 more
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Gongye shui chuli, 2011 介绍了油田注水中的细菌类型、危害机理及二氧化氯处理油田注水的优势。采用复合二氧化氯发生器对油田采油厂集输站的回注水进行了二氧化氯投加应用。结果表明, 该设备用于油田回注水, 杀菌效果明显, 可有效去除水中的硫化物, 并对污泥有剥离和抑制作用, 可降低腐蚀率, 达到回注水质标准, 吨水处理成本较低。
张盛军 +4 more
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Conservation Biology, EarlyView.Abstract Qualitative approaches are increasingly applied in conservation social science, yet methodological reflection remains limited. Member checking, a process of returning findings to participants for feedback, is widely recognized outside conservation as a means to enhance rigor and reciprocity, but it is rarely reported in conservation research ...
Judith J. Rakowski +6 more
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International Journal of Applied Linguistics, EarlyView.ABSTRACT Although the use of AI technologies (e.g., chatbots and automated writing evaluations (AWE)) has gained considerable attention in language learning fields in recent years, how AI technologies have been designed and implemented in language learning education, as well as their effectiveness, is understudied.
Shen Qiao +2 more
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Gongye shui chuli, 2007 在对油田污水处理调研的基础上总结了低渗透油田回注水的工艺技术,分析了回注水对低渗透油田储层的危害因素,探讨了现有技术条件下如何最大限度地满足低渗透油田回注要求,展望了该技术的发展方向。
蒋生键
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International Journal of Applied Linguistics, EarlyView.ABSTRACT This study examines how foreign language teachers’ beliefs about the medium of instruction and translanguaging evolve over time by revisiting three in‐service teachers twelve years after their initial interviews. Using a qualitative longitudinal design, the study traces how translanguaging was initially framed as pedagogically deficient but ...
Danping Wang
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