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Erratum to “Assessment of Uinta Basin Oil and Natural Gas Well Pad Pneumatic Controller Emissions” [Journal of Environmental Protection, 2017, 8, 394-415]
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作者 Eben D. Thoma 《Journal of Environmental Protection》 2017年第12期1445-1445,共1页
In the fall of 2016, a field study was conducted in the Uinta Basin Utah to improve information on oil and natural gas well pad pneumatic controllers (PCs) and emission measurement methods. A total of 80 PC systems at... In the fall of 2016, a field study was conducted in the Uinta Basin Utah to improve information on oil and natural gas well pad pneumatic controllers (PCs) and emission measurement methods. A total of 80 PC systems at five oil sites (supporting six wells) and three gas sites (supporting 12 wells) were surveyed, and emissions data were produced using a combination of measurements and engineering emission estimates. Ninety-six percent of the PCs surveyed were low actuation frequency intermittent vent type. The overall whole gas emission rate for the study was estimated at 0.36 scf/h with the majority of emissions occurring from three continuous vent PCs (1.1 scf/h average) and eleven (14%) malfunctioning intermittent vent PC systems (1.6 scf/h average). Oil sites employed, on average 10.3 PC systems per well compared to 1.5 for gas sites. Oil and gas sites had group average PC emission rates of 0.28 scf/h and 0.67 scf/h, respectively. This difference was due in part to differing site selection procedures used for oil and gas sites. The PC system types encountered, the engineering emissions estimate approach, and comparisons to measurements are described. Survey methods included identification of malfunctioning PC systems and emission measurements with augmented high volume sampling and installed mass flow meters, each providing a somewhat different representation of emissions that are elucidated through example cases. 展开更多
关键词 Pneumatic controller EMISSIONS oil and natural gas Production Uinta BASIN Methane VOLATILE Organic Compounds
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Assessment of Uinta Basin Oil and Natural Gas Well Pad Pneumatic Controller Emissions
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作者 Eben D. Thoma Parikshit Deshmukh +3 位作者 Russell Logan Michael Stovern Chris Dresser Halley L. Brantley 《Journal of Environmental Protection》 2017年第4期394-415,共22页
In the fall of 2016, a field study was conducted in the Uinta Basin Utah to improve information on oil and natural gas well pad pneumatic controllers (PCs) and emission measurement methods. A total of 80 PC systems at... In the fall of 2016, a field study was conducted in the Uinta Basin Utah to improve information on oil and natural gas well pad pneumatic controllers (PCs) and emission measurement methods. A total of 80 PC systems at five oil sites (supporting six wells) and three gas sites (supporting 12 wells) were surveyed, and emissions data were produced using a combination of measurements and engineering emission estimates. Ninety-six percent of the PCs surveyed were low actuation frequency intermittent vent type. The overall whole gas emission rate for the study was estimated at 0.36 scf/h with the majority of emissions occurring from three continuous vent PCs (1.1 scf/h average) and eleven (14%) malfunctioning intermittent vent PC systems (1.6 scf/h average). Oil sites employed, on average 10.3 PC systems per well compared to 1.5 for gas sites. Oil and gas sites had group average PC emission rates of 0.28 scf/h and 0.67 scf/h, respectively. This difference was due in part to differing site selection procedures used for oil and gas sites. The PC system types encountered, the engineering emissions estimate approach, and comparisons to measurements are described. Survey methods included identification of malfunctioning PC systems and emission measurements with augmented high volume sampling and installed mass flow meters, each providing a somewhat different representation of emissions that are elucidated through example cases. 展开更多
关键词 PNEUMATIC controller EMISSIONS oil and natural gas Production Uinta BASIN Methane VOLATILE Organic Compounds
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Passability test and simulation of sand control string with natural gas hydrates completion in large curvature hole
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作者 Hao-xian Shi Yan-jiang Yu +12 位作者 Ru-lei Qin Jun-yu Deng Yi-xin Zhong Li-qiang Qi Bin Li Bo Fan Qiu-ping Lu Jian Wang Kui-wei Li Ye-cheng Gan Gen-long Chen Hao-wen Chen Zhi-ming Wu 《China Geology》 CAS CSCD 2023年第1期27-36,共10页
To meet the requirements of marine natural gas hydrate exploitation,it is necessary to improve the penetration of completion sand control string in the large curvature borehole.In this study,large curvature test wells... To meet the requirements of marine natural gas hydrate exploitation,it is necessary to improve the penetration of completion sand control string in the large curvature borehole.In this study,large curvature test wells were selected to carry out the running test of sand control string with pre-packed screen.Meanwhile,the running simulation was performed by using the Landmark software.The results show that the sand control packer and screen can be run smoothly in the wellbore with a dogleg angle of more than 20°/30 m and keep the structure stable.Additionally,the comprehensive friction coefficient is 0.4,under which and the simulation shows that the sand control string for hydrate exploitation can be run smoothly.These findings have important guiding significance for running the completion sand control string in natural gas hydrate exploitation. 展开更多
关键词 natural gas hydrates(NGHs) Completion sand control string Large curvature borehole Passability test Friction coefficient oil and gas exploration engineering NGHs exploration trial engineering
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合成氨油改气气化装置控制系统的改造
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作者 王发兵 《自动化仪表》 CAS 北大核心 2010年第6期51-54,共4页
对Shell改用天然气作原料后的渣油气化炉控制系统的特点和改造方案进行了研究。分析了Shell渣油气化炉工艺流程的主要变化,并结合控制系统改造的基本原则,提出了控制系统的改造方案,具体剖析了天然气压缩、天然气进料、烧嘴冷却水以及... 对Shell改用天然气作原料后的渣油气化炉控制系统的特点和改造方案进行了研究。分析了Shell渣油气化炉工艺流程的主要变化,并结合控制系统改造的基本原则,提出了控制系统的改造方案,具体剖析了天然气压缩、天然气进料、烧嘴冷却水以及气化炉测温等系统的控制方案。从改造后投入生产运行的情况来看,控制系统的改造达到了预期的效果,保证了装置改造后的稳定运行。 展开更多
关键词 渣油 天然气 油改气 气化炉控制
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