Results 41 to 50 of about 389 (87)
[Progress in the application of preparative gas chromatography in separating volatile compounds]. [PDF]
Se Pu, 2023 Mayira A, Zhong Z, Bai X.
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Shiyou jixie, 2015 川南坳陷仁怀区块仁页1井在施工中存在着地层出水、井壁垮塌、膏岩卡钻以及机械钻速低等问题。根据该井的工程设计及地层特点，总结分析了钻进过程中存在的主要技术难点，同时论述了PDC钻头+螺杆优快钻井、高效钻头应用、旋冲钻井技术以及钻井液优选等关键技术在该区块的首次成功应用。该井实钻效果表明，这些技术能有效提高机械钻速，保持井壁稳定，是川南坳陷仁怀区块页岩气探井钻井施工成功的关键 ...
秦杜, 袁明进, 张娜
doaj
Study on characteristics of methane adsorption and thermodynamic in water-bearing shale [PDF]
Shale reservoirs generally contain water that has a significant impact on shale gas adsorption behavior and geological reserve evaluation. In order to explore the influence of water content on gas adsorption behavior in shale, an adsorption model ...
Bobo LI +5 more
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Gas-water interaction in confined space of shale kerogen [PDF]
Understanding the shale matrix-fluid interactions is crucial for evaluating gas-in-place resources and the gas production potential in shale gas reservoirs.
Chu ZHANG +3 more
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Shale-pore Semantic Segmentation Network Based on Pseudo-labeling [PDF]
Shale pore structures contribute significantly to shale gas reservoirs, with their shape, size, connectivity, and development directly affecting storage.
Chenzhang WANG, Yanfei WANG, Zhijing BAI
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Shiyou jixie, 2015 为提高页岩气钻井效率、减少钻头泥包，根据现场常用PDC钻头建立三维流域模型，将岩屑模拟为从井底面射入流场的球状颗粒，用拉格朗日粒子追踪法描述固相，将钻头体DPM边界条件设置为捕获，以岩屑颗粒捕获率作为反映泥包可能性的评价参数，结合井底流场结构特点，模拟分析了岩屑输运与黏附规律。数值模拟结果表明，井底岩屑输运时沿程存在碰撞与反弹的不规则三维运动，这导致部分岩屑黏附到钻头体表面；对于不同尺寸的岩屑颗粒，各刀翼和排屑槽的岩屑颗粒捕获率Ra呈类似的变化规律，当岩屑粒径为10 mm时Ra最大，当粒径小于1 mm时，
陈修平 +5 more
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Stress wave attenuation and damage patterns of shale under methane/oxygen explosion [PDF]
Methane in-situ explosion fracturing of shale is a revolutionary technology that utilizes the methane analyzed from shale reservoirs and the input combustion aids to carry out explosion reactions, thereby forming a three-dimensional fracture network in ...
CAO Xiaolong +7 more
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Shiyou jixie, 2014 非常规油气藏开采难度大，开发成本高，原有的水平井管内分段压裂技术存在分段级数少、压裂规模小等问题，无法满足非常规油气资源高效开发的要求。为此，分析了水平井泵送桥塞、固井投球滑套、连续管拖动封隔器等多级分段压裂新技术，其中，泵送桥塞射孔多级分段压裂技术分段级数不受限制，适合大排量、大液量压裂要求，是页岩油气开发的利器。固井投球滑套分段压裂技术滑套可重复开启，能满足选择性生产、堵水及重复性压裂的需求。各种水平井管内多级分段压裂新技术的成功应用，为非常规油气藏开发提供了强有力的技术支持。
伊西锋
doaj
Youqicang pingjia yu kaifa, 2020 Because of the importance of preservation conditions and shale pore evolution to shale gas exploration and development, it is of great scientific significance and academic value to study the relation between them.
LIU Shugen +9 more
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能源革命促进中国清洁低碳发展的“攻关期”和“窗口期” [PDF]
, 2018 中国正处于经济发展和低碳清洁转型的关键时期。能源生产和消费革命的核心是能源供给侧和能源消费改革及创新。党的十九大报告指出要推进能源生产和消费革命,构建清洁低碳、安全高效的能源体系。本文通过分析能源革命的必要性和紧迫性,指出目前能源革命正处于重要的时间窗口。由于能源消费和生产革命对促进低碳清洁转型的重要作用,以及能源制度对低碳清洁转型的保障作用,所以需要通过能源生产和消费革命完善能源体制,以支持中国低碳清洁转型顺利推进。在分析讨论的基础上,本文提出,需准确理解能源生产和消费革命 ...
林伯强
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