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您的检索式：作者名="Ian D.Gates"
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| 1 | Pad-scale control improves SAGD performance显示文摘Steam Assisted Gravity Drainage(SAGD)is widely used in the Athabasca oil sands deposit to recover bitumen.Since the viscosity of bitumen is high at original reservoir conditions,heat is required to lower its viscosity to the point it becomes mobile enough to be recovered under gravity drainage.To heat the reservoir,steam is injected into the formation and thus SAGD is energy intense.Given that the fuel used to generate steam is the largest operating cost,the steam-to-oil ratio is one of the key parameter for evaluating the economics of any SAGD project.Here,the use of dynamic distributed steam injection within a pad of SAGD wellpairs is explored.The results demonstrate that feedback control leads to improvements of the SOR over that of constant pressure.The results show that the controller is able to detect the“sweet spots”(oil zones with better geological properties)in the reservoir and dynamically deliver more steam to that region.Meanwhile,it reduces the steam injection towards relatively worse quality zones to lower the local SOR. | Tao Guo Jingyi Wang Ian D.Gates | 2018 | Petroleum2018，4，3： | 1 |
| 2 | Geometric structures,electronic characteristics,stabilities,catalytic activities,and descriptors of graphene-based single-atom catalysts显示文摘Single-atom catalysts(SACs)have been a research hotspot due to their high catalytic activity,selectivity,and atomic utilization rates.However,the theoretical research of SACs is relatively fragmented,which restricts further understanding of SAC stability and activity.To address this issue,we report our analysis of the geometric structures,electronic characteristics,stabilities,catalytic activities,and descriptors of 132 graphene-based singleatom catalysts(M/GS)obtained from density functional theory calculations.Based on the calculated formation and binding energies,a stability map of M/GS was established to guide catalyst synthesis.The effects of metal atoms and support on the charge of metal atoms are discussed.The catalytic activities of M/GS in both nitrogen and oxygen reduction reactions are predicted based on the calculated magnetic moment and the adsorption energy.Combined with the electronegativity and d-band center,a two-dimensional descriptor is proposed to predict the O adsorption energy on M/GS.More importantly,this theoretical study provides predictive guidance for the preparation and rational design of highly stable and active single-atom catalysts using nitrogen doping on graphene. | Weijie Yang Shaopeng Xu Kai Ma Chongchong Wu Ian D.Gates Xunlei Ding Weihua Meng Zhengyang Gao | 2020 | Nano Materials Science2020，2，2： | 0 |
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