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8th International Conference on Electrical, Mechanical and Computer Engineering, ICEMCE 2024

作者： Xiao, Yue Zhou, Tuo Liu, Guojun Chen, Xuanren Kong, Xiangji Zhang, Yu Liu, Longlong diao, Shunong PetroChina International Exploration and Development Co. Ltd Overseas Drilling and Completion Technology Center Cnpc Engineering Technology R&d Co. Ltd Beijing China PetroChina International Exploration and Development Co. Ltd Beijing China Changchun University of Technology Changchun China Beijing China

ISBN: (纸本)9798331506230

The optimal selection of drilling rigs is crucial for the rational arrangement of drilling rigs in multi operation teams, the improvement of moving operation management level, and the enhancement of drilling operation quality and efficiency. At present, the optimal selection of drilling rigs only considers whether the drilling meets the needs of the drilling project and the moving distance, and cannot comprehensively and scientifically select drilling rigs, which is not conducive to the rational configuration evaluation of oilfield drilling rig operation. This article comprehensively considers key indicators such as drilling efficiency, time efficiency, moving cycle, moving cost, and moving distance, innovatively forms a pentagonal drilling rig optimization coordinate system, establishes drilling rig optimization rate, comprehensive standard deviation, drilling rig optimization comprehensive standard deviation and other indicators, and forms a drilling rig optimization model for drilling. Taking Block B as an example, the priority of Block B with three drilling rigs to be optimized calculated using the model is r1> r2> *** optimal selection rate of drilling r1 is the highest, the comprehensive standard deviation is smaller, and the comprehensive index of the best and more stable drilling performance is the highest, which is 0.0058. Therefore, r1 should be selected for drilling. The drilling rig optimization model proposed in this paper provides a process reference for drilling rig optimization, quantifies various indicators, and provides a theoretical basis for new well drilling rig optimization, project company drilling rig operation plan formulation, and improving project company drilling rig management level. © 2024 IEEE.

关键词： Efficiency

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Study on the Sealing Characteristics of Temporary Plugging Agent in the Perforation Tunnel 13th

Study on the Sealing Characteristics of Temporary Plugging A...

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13th International Field Exploration and development Conference, IFEdC 2023

作者： Li, Yan-Chao Wang, Yi-Xuan Feng, Qiang Zou, Long-Qing Wen, Huan Gao, Xiang Shale Gas Exploration and Development Department CNPC Chuanqing Drilling Engineering Co. Ltd. Beijing China CNPC Engineering Technology R&D Company Ltd. Beijing China

ISBN: (纸本)9789819702596

To understand the sealing characteristics of temporary plugging agents (TPA) in the borehole, a system was established for simulating high pressure temporary plugging experiments. The influence of the type and the concentration of TPA, the carrying liquid viscosity and the pump displacement on the sealing characteristics are studied, and the comparison and selection experiments of TPA are also performed. It can be concluded from experimental results that i) the higher viscosity of carrying liquid leads more TPA to going into the low-angle-borehole, resulting in better sealing characteristic;ii) the larger pump displacement causes more boreholes blocked by the TPA (especially the number of blocked low-angle-boreholes are more than that of blocked high-angle-boreholes);iii) both low-angle-borehole and high-angle-borehole are filled with more TPA duo to the higher concentration of TPA;iv) the sealing efficiency of TPA-knot is the highest, followed by TPA-particle and TPA-ball, and the TPA-fiber is the lowest. For obtaining the excellent sealing efficiency, it is recommended the mixed use of TPA-knot, TPA-particle and TPA-ball. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Boreholes

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Scheme design of annular pressure control by rupture disk technology 34th

Scheme design of annular pressure control by rupture disk te...

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34th International Ocean and Polar Engineering Conference, ISOPE 2024

作者： Wang, Gang Lv, Shengming Xiang, Ying Liu, Yuhan Ye, Yu Ji, Fei Zhou, Tuo Jiang, Quanyu Cao, Jinyan CNPC Engineering Technology R&D Company Limited Beijing China China National Oil and Gas Exploration and Development Company Ltd Beijing China China University of Petroleum in Beijing Beijing China

ISBN: (纸本)9781880653784

deepwater oil and gas wells experience elevated wellbore temperatures during exploratory well testing and production well production, which generate expansion pressure and the phenomenon of elevated annulus pressure (APB). The annulus annulus pressure may trigger risks such as casing body damage, casing buckle leakage, etc., destroying the wellbore integrity of deepwater wells and posing serious safety risks to deepwater wellbore integrity. Therefore, deepwater oil and gas wells must adopt an annulus pressure management program. According to the engineering application experience, the rupture disk casing tool is a low-cost annulus pressure solution that is currently effective and widely used. In this paper, we study the pressure specification design of rupture disk to meet the requirement of annular pressure management in deepwater wells, and carry out the program design of rupture disk technology to control the annular pressure. When the annulus closure pressure exceeds the design threshold, the annulus high-pressure fluid overflows from the rupture disk, and the annulus closure pressure decreases, thus solving the problem of high annulus pressure. © 2024 by the International Society of Offshore and Polar Engineers (ISOPE).

关键词： rupture disks

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Investigation of Physiologically Interpretable deep Neural Network Using Pulse rate Variability in Mental Fatigue recognition

Investigation of Physiologically Interpretable Deep Neural N...

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International Conference on Affective Computing and Intelligent Interaction Workshops and demos (ACIIW)

作者： Yasuhide Hyodo Kiyoshi Yoshikawa Tomoya Ikuta Yota Komoriya Human Technology R&D Department Technology Development Laboratories Sony Corporation Tokyo Japan

ISBN: (数字)9798331516451

ISBN: (纸本)9798331516468

Mental fatigue recognition by heart rate variability analysis in a photoplethysmography (PPG) device in terms of pulse rate variability (PrV) is gathering interest for stress relief and well-being applications. To realize mental fatigue recognition systems, many studies have been conducted, which showed the high accuracy of such systems evaluations. However, there are limitations in generalization due to the lack of consideration of the physiological mechanism. In this study, we developed a framework for investigating mental fatigue recognition using physiologically interpretable deep neural network (dNN) in a wrist-worn PPG device. Furthermore, we developed a novel feature extraction method that captures the temporal accumulation of arousal states to consider the perspective of cognitive resource consumption. The results suggest that the method we developed improved the mental fatigue recognition performance of the wrist-worn PPG device throughout our experiments (an accuracy of 0.90 and an F1 score of 0.91). In addition, it was observed that the method for the wrist-worn PPG device enhanced the contribution of HrV indices, known to be associated with cognitive function. The findings demonstrate that the proposed approach enhances not only accuracy but also the physiological interpretability of the model in PPG devices.

关键词： Performance evaluation Accuracy Time series analysis Artificial neural networks Human factors Fatigue Photoplethysmography Feature extraction Physiology Heart rate variability

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research on Cement Sheath Integrity Under High Temperature during In-Situ development for Shale Oil Well 28th

Research on Cement Sheath Integrity Under High Temperature D...

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28th International Conference on Computational and Experimental Engineering and Sciences, ICCES 2022

作者： Guo, Xueli Qi, Fengzhong Yu, Yongjin Jin, Jianzhou Guo, Yuchao Ji, Hongfei Cheng, Yongqin Zhao, Zhengyang CNPC Engineering Technology R&D Company Limited Beijing China Research Institute of Petroleum Exploration and Development Beijing China China University of Petroleum Beijing China

ISBN: (纸本)9783031020964

The temperature is as high as 500 °C at the bottom of shale oil wells during in-situ development. during shale oil production, the fluids with high temperature are transmitted to the wellhead, and the wellbore temperature will rise extremely, which greatly affects the cement sheath integrity. In this paper, the linear expansion coefficient of cement stone under the temperature of 500 ℃ were measured. Based on the experimental data and the field data of shale oil well, the stage finite element modeling method was adopted to establish a casing-cement-formation (CCF) model considering the temperature and pressure coupling. The results revealed that the linear expansion coefficient of cement stone decreases linearly with the increase of temperature. When the temperature was less than 250 ℃, the cement stone expanded. However, when the temperature exceeded 250 ℃, it shrank. The maximum shrinkage ratio can be 25 × 10–6/℃ for the temperature of 500 ℃. The circumferential stress of the inner wall of cement sheath first increased rapidly, then slowly decreased to be stable. The larger the cement stone shrink ratio was, the greater the circumferential stress was. The maximum circumferential stress can exceed 10 MPa for the shrink ratio of 25 × 10–6/℃. It can be concluded that the circumferential stress appears in a tensile state under high temperature conditions, which can easily lead to the failure of the cement sheath seal. The strength of the cement stone should be considered when designing the cement slurry property. In addition to the decay performance, the expansion of the cement stone should also be designed to ensure that the cement stone does not shrink when subjected to high temperature conditions. © 2023, The Author(s), under exclusive license to Springer Nature Switzerland AG.

关键词： Cements

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Trend Analysis for Calibrated Active System Volume and differential Flow Significantly reduces False Positive Kick Alarm during drilling

Trend Analysis for Calibrated Active System Volume and Diffe...

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2024 SPE Asia Pacific Oil and Gas Conference and Exhibition, APOGCE 2024

作者： ding, danhong Mei, Yunyi Ge, Su Yong, Fengwei Lu, Yaozhong Ge, Yunhua CNPC National Elite Institute of Engineering Beijing China CNPC Engineering Technology R&D Company limited Beijing China CNPC Research Institute of Petroleum Exploration and Development Beijing China Sino Science & Technology Company Limited Israel

ISBN: (纸本)9781959025269

rapid kick detection is an essential part of rig safety. Identifying potential kick events in time is valuable and is an urgent and critical task for rig personnel and remote Operation Support Center(OSC) users. A new monitoring system has been developed by firstly calibrating the active system volume for pipe and cuttings displacement during drilling and then by detecting a statistically significant trend in the observed data rather than to rely solely on absolute values and threshold crossing to maximize the sensitivity whilst minimizing the number of false alarms. More than hundreds of historical kick alarms were reviewed and the corresponding mud logging data before the events occurred were displayed in log format against time for clear identification of anomalies in three different tracks: one track for pit volume, one for flow-in and flow-out, the third hole depth, bit depth and block position. By applying an automated rule-based system, the states of rig activities are also displayed simultaneously by detection of bit movement, pump, rotation status and other elements. It is noticed that the data absolute value, data noise, and rig operations such as sudden string movements and flow transients has significant interference to the detection of kick event and that the differential flow is more sensitive early kick indicator than pit volume in most of the historical cases. A pit volume calibrated for drill pipe and cuttings displacement during drilling and a trend analysis by applying Page-Hinkley method for monitoring both active system volumes and differential flows are established and the monitoring system is updated. The system has been tested and refined with the data flows of the historical cases in labs to maximize the sensitivity whilst minimizing the number of false alarms. A significant reduction of false positive alarms is achieved by reducing triggering of 1-2 alarms per well per week while maintaining a 100% true positive identification rate by compa

关键词： drill pipe

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WIME Systematic Innovation Method based on 6WHI and Total Factor Matrix Analysis

WIME Systematic Innovation Method based on 6WHI and Total Fa...

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2023 International Conference on Electronic, Electrical and Information technology, EEIT 2023

作者： Li, Xianing Hou, Bing Zhang, Jiqun Xiao, Yanling Liu, Lian Mi, Lan China University of Petroleum Beijing102249 China Research Institute of Petroleum Exploration & Development Beijing100083 China Artificial Intelligence Technology R&D Center for Exploration and Development CNPC Beijing100083 China Northeast Petroleum University Daqing163318 China

The involved object of systematic innovation and management is neither a single goal nor a single meth-od. Firstly, the research object is a systematic and organic whole composed of multiple node elements with a certain degree of correlation. Secondly, the research method is multi-dimensional, comprehensive, all round and highly efficient. Innovation should break through the existing thinking framework, change the existing structure, add new components, give new energy and produce new functions. The 5W1H is a questioning approach and a problem-solving method that answers all the basic elements within a problem which are what, who, when, where, why, and how. It aims to view ideas from various perspectives and gain an in-depth understanding of a specific situation. On the basis of 5W1H analysis method, this paper puts forward the 6WHI systematic innovation management method, which increases the query words weather and if of the innovation expansion solution, increases the number of questions from 6 to 8, and expands innovative forward-looking and innovative solutions diversity, with smoother pronunciation, more exciting storm. Furthermore, a systematic innovation method based on 6WHI and total factor analysis is established, and a more general and normative model WIME method is presented. This method can be utilized as a continuous process-improvement technique in an organization. Taking the 17 letters of "if question patents"as the prefix, they are just 17 common key elements in system management and innovation. For each element mentioned above, 8 questions and answers of 6WHI are given to realize systematic management and innovation. The above two types of work are arranged according to the matrix format, and then the weighted evaluation method is introduced to evaluate the above management and innovation work, so as to give a general and standardized systematic management and innovation (WIME) method. © Published under licence by IOP Publishing Ltd.

关键词： Factor analysis

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A study of highly activated hydrogen evolution reaction performance in acidic media by 2d heterostructure of N and S doped graphene on MoO_(x)

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Carbon Energy 2023年第11期5卷 68-80页

作者： Kubra Aydin Seongwon Woo Vinit Kaluram Kanade Seulgi Choi Chisung Ahn Byungkwon Lim Taesung Kim SKKU Advanced Institute of Nanotechnology(SAINT) Department of Nano Science and TechnologySungkyunkwan UniversitySuwon‐siGyeonggi‐doRepublic of Korea School of Advanced Material Science and Engineering Department of Nano Science and TechnologySungkyunkwan UniversitySuwonGyeonggi‐doRepublic of Korea School of Mechanical Engineering Sungkyunkwan UniversitySuwon‐siGyeonggi‐doRepublic of Korea Heat&Surface Technology R&D Department Korea Institute of Industrial TechnologySiheung‐siGyeonggi‐doRepublic of Korea

Herein,a layer of molybdenum oxide(MoO_(x)),a transition metal oxide(TMO),which has outstanding catalytic properties in combination with a carbonbased thin film,is modified to improve the hydrogen production performance and protect the MoO_(x)in acidic media.A thin film of graphene is transferred onto the MoO_(x)layer,after which the graphene structure is doped with N and S atoms at room temperature using a plasma doping method to modify the electronic structure and intrinsic properties of the *** oxygen functional groups in graphene increase the interfacial interactions and electrical contacts between graphene and MoO_(x).The appearance of surface defects such as oxygen vacancies can result in vacancies in MoO_(x).This improves the electrical conductivity and electrochemically accessible surface *** the number of defects in graphene by adding dopants can significantly affect the chemical reaction at the interfaces and improve the electrochemical *** defects in graphene play a crucial role in the adsorption of H^(+)ions on the graphene surface and their transport to the MoO_(x)layer *** enables MoO_(x)to participate in the reaction with the doped graphene.N^(‐)and S^(‐)doped graphene(NSGr)on MoO_(x)is active in acidic media and performs well in terms of hydrogen *** initial overpotential value of 359 mV for the current density of−10 mA/cm^(2)is lowered to 228 mV after activation.

关键词： heteroatom‐doped graphene hydrogen evolution reactions metal‐free catalysts transition metal oxides van der Waals(vdWs)heterostructures

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Balancing Magnetic and Mechanical Properties of Non-oriented Electrical Steel:Correlation Between Microstructure and Properties

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Acta Metallurgica Sinica(English Letters) 2024年第12期37卷 2136-2149页

作者： Zhaoyang Cheng Jing Liu Chunlei Yu Bolin Zhong Shenglin Chen Bing Fu Soran Birosca The State Key Laboratory of Refractories and Metallurgy Wuhan University of Science and TechnologyWuhan430081China Guangdong Provincial Key Laboratory of New Energy Materials Service Safety College of Material Science and EngineeringShenzhen UniversityShenzhen518060China Hubei Engineering Technology Research Center of Marine Materials and Service Safety Wuhan University of Science and TechnologyWuhan430081China The R&D Center of Wuhan Iron and Steel Co. Ltd.Wuhan430080China School of Mechanical and Design Engineering in the Faculty of Technology University of PortsmouthPortsmouthPO13DJUK

High performance e-motors require a continuous enhancement of physical and mechanical properties for non-oriented electrical steel(NOES).However,the optimization of mechanical and magnetic properties simultaneously during NOES processing is extremely challenging where both properties directly influenced by alloy grain size,crystallographic texture,and dislocation *** the current investigation,recrystallization annealing cycles were employed to modify the microstructure with the aim of balance magnetic and mechanical properties of NOES *** results showed that with increasing annealing temperatures,the degree of recrystallization and grain size increased,while the dislocation density reduced considerably at the early stage of ***,the values of texture parameter A*_(overall)(which is a function of overall individual grain orientations and their alignments with easy magnetization directions)were *** was evident that the magnetic properties were significantly improved,however the alloy strength was reduced with increasing annealing ***,the correlation between magnetic properties as well as alloy strength on grain size,texture,and dislocation density were *** crystallographic texture intensity and measured properties quantitative analyses it was concluded that grain size was the predominant factor in balancing the mechanical and magnetic properties of the studied ***,the optimal comprehensive properties(both magnetic and mechanical)were achieved by annealing at 800℃,which yielded a magnetic induction B5000 of 1.616 T,a high-frequency iron loss P_(1.0/400)of 22.43 W/kg,and a yield strength of 527 MPa.

关键词： High strength non-oriented silicon steel Microstructure Texture Magnetic properties Mechanical properties

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Intelligent Prediction technology for Production of Tight Oil Based on data Analysis 13th

Intelligent Prediction Technology for Production of Tight Oi...

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13th International Field Exploration and development Conference, IFEdC 2023

作者： Li, Ning Wu, Xiang-Hong Li, Xin Wang, Zhi-Ping Wang, Yue-Zhong Zhao, Li-Ao ren, Liang Wang, Hong-Liang Tian, Hong-Yu ren, Shu-Hang Jiang, Si-rui Research Center of Artificial Intelligence Research Institute of Petroleum Exploration and Development PetroChina Beijing China Artificial Intelligence Technology R&D Center for Exploration and Development CNPC Beijing100083 China Department of Asia-Pacific E&P Research Institute of Petroleum Exploration and Development PetroChina Beijing China

ISBN: (纸本)9789819702718

China is rich in tight oil resources, with a wide distribution range and a large amount of resources, making it one of the key areas for strategic replacement of future oil reserves and production. In response to issues such as strong heterogeneity of terrestrial tight oil reservoirs, difficulty in drilling high-quality oil layers, large production differences, and unclear main control factors for production capacity, a detailed analysis of dynamic and static data of production wells was conducted to analyze production performance and decline patterns. Production wells were classified according to production characteristics, and development indicators at different stages were statistically analyzed based on actual production days. Using a combination of principal component analysis and Pearson correlation coefficient, based on multiple dynamic and static data such as geological factors, fracturing factors, and development factors, and analyzing the correlation between different single and combined factors and cumulative oil production at different stages, the main control factors for different production stages of tight oil were obtained. A production capacity prediction model for tight oil fracturing horizontal wells was established based on machine learning intelligent algorithms, A production capacity evaluation and prediction technology for tight oil fracturing horizontal wells has been developed. By comparing with actual production data, the accuracy of the predicted results can meet production needs, providing a strong technical foundation for precise prediction and guidance of tight oil production in China. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Quality control

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