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Process synthesis for the separation of coal-to-ethanol products

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Chinese Journal of Chemical Engineering 2024年第5期69卷 263-278页

作者： Qingping Qu Daoyan Liu Hao Lyu jinsheng sun School of Chemical Engineering and Technology Tianjin UniversityTianjin 300072China Sustainable Energy and Environment Thrust The Hong Kong University of Science and Technology(Guangzhou)Nansha 511400China

The coal-to-ethanol process,as the clean coal utilization,faces challenges from the energy-intensive distillation that separates multi-component effluents for pure *** to at least eight columns,the synthesis of the ethanol distillation system is impracticable for exhaustive comparison and difficult for conventional superstructure-based optimization as rigorous models are *** work adopts a superstructure-based framework,which combines the strategy that adaptively selects branches of the state-equipment network and the parallel stochastic algorithm for process ***-performance computing significantly reduces time consumption,and the adaptive strategy substantially lowers the complexity of the superstructure ***,parallel computing,elite search,population redistribution,and retention strategies for irrelevant parameters are used to improve the optimization efficiency *** optimization terminates after 3000 generations,providing a flowsheet solution that applies two non-sharp splitting options in its distillation *** a result,the 59-dimension superstructure-based optimization was solved efficiently via a differential evolution algorithm,and a high-quality solution with a 28.34%lower total annual cost than the benchmark was ***,the solution of the superstructure-based optimization is comparable to that obtained by optimizing a single specific configuration one by *** indicates that the superstructure-based optimization that combines the adaptive strategy can be a promising approach to handling the process synthesis of large-scale and complex chemical processes.

关键词： Coal-to-ethanol Process synthesis Superstructure-based optimization Differential evolution algorithm Distillation

Detecting Double Mixed Compressed Images Based on Quaternion Convolutional Neural Network

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Chinese Journal of Electronics 2024年第3期33卷 657-671页

作者： Hao WANG Jinwei WANG Xuelong HU Bingtao HU Qilin YIN Xiangyang LUO Bin MA jinsheng sun Department of Automation Nanjing University of Science and Technology Engineering Research Center of Digital Forensics Ministry of Education Department of Computer and Software Nanjing University of Information Science and Technology School of Management Nanjing University of Posts and Telecommunications Department of Computer Science and Engineering Guangdong Province Key Laboratory of Information Security Technology Sun Yat-sen University State Key Laboratory of Mathematical Engineering and Advanced Computing Qilu University of Technology

Detection of color images that have undergone double compression is a critical aspect of digital image *** the existence of various methods capable of detecting double Joint Photographic Experts Group(JPEG) compression,they are unable to address the issue of mixed double compression resulting from the use of different compression *** particular,the implementation of Joint Photographic Experts Group 2000(JPEG2000)as the secondary compression standard can result in a decline or complete loss of performance in existing *** tackle this challenge of JPEG+JPEG2000 compression,a detection method based on quaternion convolutional neural networks(QCNN) is *** QCNN processes the data as a quaternion,transforming the components of a traditional convolutional neural network(CNN) into a quaternion *** relationships between the color channels of the image are preserved,and the utilization of color information is ***,the method includes a feature conversion module that converts the extracted features into quaternion statistical features,thereby amplifying the evidence of double *** results indicate that the proposed QCNN-based method improves,on average,by 27% compared to existing methods in the detection of JPEG+JPEG2000 compression.

关键词： Image coding Image color analysis Quaternions Forensics Transform coding Color Feature extraction

Application status and prospect of ionic liquids in oilfield chemistry

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Petroleum 2024年第1期10卷 11-18页

作者： jinsheng sun Zhuoyang Xiu Li Li Kaihe Lv Xianfa Zhang Zonglun Wang Zhiwen Dai Zhe Xu Ning Huang Jingping Liu School of Petroleum Engineering China University of Petroleum (East China) CNPC Engineering Technology R&D Company Limited Oil & Gas Technology Research Institute of Changqing Oilfield Company

The ionic liquid, as a new treatment agent, has been increasingly applied in oil fields due to its strong temperature resistance, good solubility and high surface activity. In this paper, we systematically discuss the action mechanism and application effect of ionic liquids in oilfield chemistry. Ionic liquids can inhibit shale hydration expansion and reduce fluid loss through adsorption and intercalation, inhibit the formation of natural gas hydrate through imidazole five-membered ring structure as a space barrier, reduce viscosity of heavy oil by breaking chemical bonds of heavy oil macromolecules and charge transfer,improve oil displacement efficiency by forming ions pairs with carboxyl groups in crude oil, demulsify by forming channels between dispersed water droplets, acidify the formation by reacting with water to produce acid, interacts with organic material through weak hydrogen bonds and extracts it from oilfield wastewater, desulphurize by inserting sulfide molecules into the “stack” structure and form liquid inclusion complex, inhibit corrosion by forming a protective film on the metal surface. Based on the above aspects, the development direction of ionic liquids is proposed. The application of ionic liquids in oilfield chemistry is still in its infancy. It is urgent to fully explore the application performance of ionic liquids in oilfield chemistry, which also provides theoretical and technical supports for efficient reservoir development.

关键词： Ionic liquids Oilfield chemistry Shale inhibitor Drilling fluid

Progress in the application of graphene material in oilfield chemistry:A review

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Petroleum 2024年第2期10卷 175-190页

作者： jinsheng sun Yuanwei sun Yong Lai Li Li Gang Yang Kaihe Lv Taifeng Zhang Xianfa Zhang Zonglun Wang Zhe Xu Zhiwen Dai Jingping Liu School of Petroleum Engineering China University of Petroleum (East China) CNPC Engineering Technology R&D Company Limited Nanchong Vocational and Technical College Oil & Gas Technology Research Institute of Changqing Oilfield Company CNPC Greatwall Drilling Fluids Company

Graphene is a single atom thick crystal composed of carbon atoms. It is the lightest, thinnest, strongest material that conducts heat and electricity well heretofore. In terms of application, by introducing oxygen-containing groups, graphene can be well dispersed in solvents, can be chemically modified and functionalized, or connected with other electroactive substances through covalent bond or non-covalent bond to form composite materials, which is conducive to further processing and promotion. The application of graphene in oilfield chemistry started late, but developed rapidly. Graphene has played an active role in drilling fluid, cementing fluid, fracturing fluid, displacement fluid and other oilfield working fluids. It can enhance the temperature and salt resistance of working fluid and improve the effect of working fluid. In this paper, several directions of graphene applications in oilfield chemistry, such as modified graphene, graphene copolymers and graphene nanoparticles, are reviewed in detail from the synthesis methods, action mechanisms and effects of graphene and its derivatives, and the frontier cases at this stage are given. On the basis of the existing research, suggestions for the development direction of graphene materials in oilfield chemistry are given for a variety of graphene materials, aiming to provide guidance for the application of graphene in oilfield chemistry.

关键词： Oilfield chemistry Graphene Action mechanism Application Prospect

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我国钻井液技术难题、新进展及发展建议

钻井液与完井液 2024年第1期41卷 1-30页

作者：孙金声王韧龙一夫中国石油集团工程技术研究院有限公司北京102206 中国石油国家卓越工程师学院北京102208 油气钻完井技术国家工程研究中心北京102206

系统地梳理了超深/特深层、非常规、深水、干热岩、极地、天然气水合物等复杂地层钻探过程中面临的钻井液技术难题,探讨了关键科学问题与核心工程难题,结合近年来的钻井液技术进展,介绍了钻井液技术最新进展。针对复杂地层钻井过程中遇... 详细信息

系统地梳理了超深/特深层、非常规、深水、干热岩、极地、天然气水合物等复杂地层钻探过程中面临的钻井液技术难题,探讨了关键科学问题与核心工程难题,结合近年来的钻井液技术进展,介绍了钻井液技术最新进展。针对复杂地层钻井过程中遇到的高温高压高盐、泥页岩水化严重、井壁失稳、大温差、井漏、储层损害,以及钻井液维护自动化程度低等问题,国内外学者研发了抗高温高盐水基/油基钻井液、恒流变钻井液、抗超高温泡沫钻井液、环境友好型超低温钻井液、智能温压响应承压堵漏材料、可降解储层保护材料、钻井液在线监测与自动加料系统等关键材料、体系与装备。但随着地质、工程环境愈加复杂,钻井液材料仍面临抗超高温高盐、超长时间稳定、防塌固壁、恶性漏失以及钻井液性能自动化调控等重大技术瓶颈。为满足复杂地层钻探过程中钻井液性能需求,未来还需深入研究钻井液处理剂在极端条件下的起效/失效机理,钻井液处理剂在微观-介观-宏观等不同尺度下的构效关系变化及作用机制,建立安全高效的钻井液多功能一体化调控方法,构建智能钻井液理论与技术,为实现复杂地层安全高效经济环保钻井提供关键技术支撑。

关键词：钻井液超深/特深层非常规地下资源防漏堵漏储层保护钻井液性能调控

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纳米材料提高水基钻井液页岩稳定性研究进展

中国石油大学学报（自然科学版） 2024年第2期48卷 74-82页

作者：孙金声李贺吕开河黄贤斌杨峥中国石油大学(华东)石油工程学院山东青岛266580 中国石油集团工程技术研究院有限公司北京102200

维持井壁稳定一直是油气钻探过程中的技术难题。由于页岩微纳米孔缝与层理发育、水敏性高,井壁失稳问题在页岩层尤为突出。提高钻井液的性能是减少井壁失稳的重要途径。纳米材料因其独特的尺度和性质,可作为水基钻井液添加剂以提高页岩... 详细信息

维持井壁稳定一直是油气钻探过程中的技术难题。由于页岩微纳米孔缝与层理发育、水敏性高,井壁失稳问题在页岩层尤为突出。提高钻井液的性能是减少井壁失稳的重要途径。纳米材料因其独特的尺度和性质,可作为水基钻井液添加剂以提高页岩的稳定性。通过对国内外技术的跟踪与分析,阐述纳米材料提高页岩稳定性的评价方法、纳米材料类型及其作用机制。开展纳米材料在非均质地层的基础理论研究,开发在高温高压及高盐环境下稳定有效的新型纳米材料,建立纳米材料提高页岩稳定性的微观评价方法,是纳米材料的重要发展方向。

关键词：纳米材料页岩井壁稳定水基钻井液

深水天然气水合物储层钻井多物理场耦合数值分析

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中国造船 2024年第3期65卷 175-186页

作者：赵珂刘磊廖波王金堂陈龙桥孙金声中国石油大学(华东)石油工程学院青岛266580 中国石油集团工程技术研究院有限公司北京102206 中国石油集团海洋工程有限公司北京100028

在深水天然气水合物储层钻井过程中,钻井液易侵入储层导致井筒内温度和压力变化,引起水合物分解,造成井壁失稳。考虑钻井液作用下的水合物解离和井筒-储层传热传质,建立了深水天然气水合物储层多孔介质非稳态传热多场全耦合模型,并进行... 详细信息

在深水天然气水合物储层钻井过程中,钻井液易侵入储层导致井筒内温度和压力变化,引起水合物分解,造成井壁失稳。考虑钻井液作用下的水合物解离和井筒-储层传热传质,建立了深水天然气水合物储层多孔介质非稳态传热多场全耦合模型,并进行数值分析。结果表明,当钻井液侵入后,水合物储层的温度和压力呈现不同程度的上升,沿地层方向的温度变化率为0.618 K/m,压力变化率为0.39 MPa/m。水合物饱和度沿地层向下逐渐降低,平均变化率为0.06m^(-1)。水合物分解导致井筒周围力学强度下降,等效塑性应变增加,20h后井筒周围塑性应变达到90%,井筒失稳风险增加。因此,在水合物储层钻井过程中,应降低钻井液温度,或进行井筒-储层传热和传质屏蔽,以实现安全高效钻井。

关键词：天然气水合物钻井液侵入井筒-储层耦合多物理场耦合井壁稳定

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深层超深层钻井液技术研究进展与展望

石油勘探与开发 2024年第4期51卷 889-898页

作者：孙金声杨景斌白英睿吕开河刘锋报中国石油大学(华东)石油工程学院山东青岛266580 中国石油集团工程技术研究院有限公司北京102206

系统论述目前国内外深层超深层钻井液技术研究进展,分析存在的关键问题并提出未来发展方向。针对深层超深层复杂油气层钻井过程中面临的高温高压高应力、裂缝发育、井壁失稳、钻井液漏失等问题,国内外学者研发了深层超深层抗高温高盐水... 详细信息

系统论述目前国内外深层超深层钻井液技术研究进展,分析存在的关键问题并提出未来发展方向。针对深层超深层复杂油气层钻井过程中面临的高温高压高应力、裂缝发育、井壁失稳、钻井液漏失等问题,国内外学者研发了深层超深层抗高温高盐水基钻井液技术、抗高温油基/合成基钻井液技术、储层保护钻井液技术以及钻井液防漏堵漏技术,但仍存在抗高温高压和高应力能力不足、井壁易失稳以及钻井液漏失严重等关键问题。由此提出未来深层超深层钻井液技术的发展方向:(1)抗高温高盐水基钻井液技术需致力于提升高温稳定性,改进流变性能,强化滤失量控制,提高与地层的相容性。(2)抗高温油基/合成基钻井液技术需在高温稳定剂、流型调节剂等低毒易降解的环保型添加剂和相关配套技术方面进一步攻关。(3)储层保护钻井液技术应致力于新型高性能添加剂和材料的研究,通过引入先进的传感器网络和人工智能算法,完善实时监测技术。(4)钻井液防漏堵漏技术应更加注重智能化技术的集成与应用、高性能堵漏材料的研发与应用、多元化堵漏技术与方法的探索以及环境保护与安全生产意识的提高。

关键词：深层超深层钻井抗高温钻井液储层保护钻井液防漏堵漏安全环保技术展望

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非参数自适应EWMA SR控制图及其变采样间隔设计

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运筹与管理 2024年第3期33卷 82-88页

作者：唐安安胡雪龙谢富鹏孙金生南京邮电大学管理学院江苏南京210003 南京邮电大学信息产业融合创新与应急管理研究中心江苏南京210003 南京理工大学自动化学院江苏南京210094

本文基于Wilcoxon符号秩(Signed Rank, SR)检验统计量,提出了一种非参数自适应指数加权移动平均(Adaptive Exponentially Weighted Moving Average, AEWMA)控制图。所提出的AEWMA SR控制图结合了非参数统计量的稳健受控性能以及自适应... 详细信息

本文基于Wilcoxon符号秩(Signed Rank, SR)检验统计量,提出了一种非参数自适应指数加权移动平均(Adaptive Exponentially Weighted Moving Average, AEWMA)控制图。所提出的AEWMA SR控制图结合了非参数统计量的稳健受控性能以及自适应控制图良好的整体偏移检测特性。同时,为了提高固定采样间隔下的非参数AEWMA SR静态控制图对异常偏移的检测效率,本文进一步研究了可变采样间隔(Variable Sampling Intervals, VSI)下的非参数AEWMA SR动态控制图设计问题。使用了Markov链方法计算控制图的精确平均运行链长(Average Run Length, ARL)和平均报警时间(Average Time to Signal, ATS)等性能指标。通过仿真分析比较了VSI AEWMA SR控制图、FSI AEWMA SR控制图和VSI EWMA SR控制图的统计性能。结果表明,所提出的VSI AEWMA SR控制图能兼顾对于不同大小偏移的敏感性,且变采样间隔的动态策略能显著提高控制图的检测效率。

关键词：非参数AEWMA控制图变采样间隔平均运行链长平均报警时间

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