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工程技术研究, 2020 某海上采油平台由于生产井采出液溶解气含高浓度 CO2 (含量达 79%)，且随着开采年限的增加，综合含水率逐年升高，导致单井地面生产管汇及设备结垢严重，油压居高不下，严重制约了油井的产能，影响平台的安全生产。针对该问题，油田现场从结垢机理、结垢影响因素及现场实际生产情况出发，首先通过优化单井阻垢剂注入点，最大程度发挥阻垢剂阻垢作用，其次在单井生产管汇末端增设控制阀，节流升压阻垢。工业运用结果表明，优化改造有效减缓了单井生产管汇结垢问题，单井油压整体下降 0.3MPa，平台原油产量增加 47m3/d ...
贵 曹 +4 more
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Efficient and variable viscosity fracturing fluid of deep coal rock gas and popularization in ultimate volume fracturing [PDF]
Limit volume Fracturing Technology is the effective means to achieve high yield industrial flow for deep coal rock gas, on the basis of this technique, fracturing fluid is the key to fully “Breaking” coal seam, establish filling sand complex crack ...
Bo LIN +7 more
core +1 more source
Rare Metals, EarlyView.ABSTRACT Ni3S2 has emerged as a promising catalyst for the electrochemical oxidation of biomass‐derived 5‐hydroxymethylfurfural (HMF) to 2,5‐furandicarboxylic acid (FDCA), driven by its distinctive physicochemical properties. However, its practical catalytic efficiency is severely hindered by abundant electrochemically inactive surface sites and poor ...
Cheng‐Feng Yi +5 more
wiley +1 more source
Rare Metals, EarlyView.ABSTRACT High‐power piezoelectric ceramics which have a wide operating temperature range are essential for sensor and actuator applications in extreme conditions. However, their development is fundamentally hindered by the inherent trade‐off among key parameters (TC, d33, Qm).
Rui Yan +10 more
wiley +1 more source
Ultrasound in Obstetrics &Gynecology, Volume 66, Issue 5, Page 641-648, November 2025.ABSTRACT Objective To evaluate the impact of low‐dose aspirin (LDA) on placental size and uterine artery pulsatility index (UtA‐PI) by analyzing longitudinal changes between the first and second trimesters in pregnancies at high risk for early‐onset pre‐eclampsia (PE).
C. Trilla +7 more
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Gaoya dianqi, 2023 为了解决硅橡胶复合绝缘子伞裙护套材料硬度低，抗鸟啄性能差以及芯棒—护套界面粘接不良等问题，现有研究人员将硅橡胶材料替换成脂环族环氧树脂材料。在制作环氧树脂伞裙护套材料的过程中，需要添加一定量的阻燃剂以满足阻燃性能的要求。为了研究阻燃剂对环氧树脂材料耐热氧老化性能的影响，制作了3种不同的环氧树脂试样，并对其老化前后进行了外观形貌、质量损失率、拉伸强度、介电性能、傅里叶红外光谱、热失重测试。研究发现，热氧老化后，环氧树脂材料的拉伸强度和介电常数减小、介电损耗增大 ...
张福增 +5 more
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Guidelines to Reduce Invasive Fire Ant Interference of Small Mammal Trapping 入侵红火蚁对小型哺乳动物诱捕的干扰规避指南
Wildlife Letters, Volume 2, Issue 4, Page 214-218, December 2024.Baited live traps are commonly used in small mammal trapping. The red imported fire ant is an invasive species in the United States that may negatively impact trap efforts by feeding on bait and potentially preying on trapped small mammals. This study tested how five bait types and the use of ant spray around traps influence ant presence inside traps ...
Kathleen A. Carey +5 more
wiley +1 more source
Dianci bileiqi, 2005 重点分析和研究了降阻材料中降阻剂,电解地极的降阻机理;论述了降阻剂在实际接地工程中对接地体的腐蚀,降阻的稳定性,降阻效果,施工工艺以及降阻剂对环境的污染等问题;提出了在选择降阻剂时,应从降阻剂的电阻率,对钢接地体的腐蚀率,降阻剂的稳定性和长效性,对环境的污染以及降阻剂的价格等方面综合考虑;阐述了降阻措施应建立在对接地装置周围的地形、地势及土壤电阻率分布进行认真勘探、测量的基础上。
郑瑞臣, 李景禄
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Dianci bileiqi, 2019 现行输电线路防雷工程采用降阻剂进行降阻时往往面临盲目施工、降阻效率低,降阻长效性差等技术瓶颈。采用CDEGS仿真计算软件建立"一"字型与方框射线型接地网模型,分别针对降阻剂的使用量、材料参数、敷设位置等因素对其降阻效率的影响规律进行计算。通过仿真计算说明不同接地网面积与土壤条件对降阻剂降阻效率的影响,根据仿真计算结果对实际输电线路杆塔接地网采用降阻剂降阻提出相应的施工建议。
胡元潮 +6 more
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Dianci bileiqi, 2002 分析了降阻剂在实际接地工程使用中存在的问题 ,对如何选择降阻剂、使用降阻剂提出具体的意见 ,并结合多年在接地工程中的应用实践和研究成果介绍了 GPF ...
李景禄
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