检索结果-内蒙古大学图书馆

Mesoporous SiO_(2)nanoparticles with low surface energy and multi-level roughness as shale wellbore stabilizers in oil-based drilling fluid

引用

Petroleum Science 2025年第1期22卷 384-397页

作者： Hong-Yan du Kai-He Lv Jin-Sheng Sun Mei-Chun Li Yuan Geng Xian-Bin Huang Hao-Kun Shen Muhammad Arqam Khan School of Petroleum Engineering China University of PetroleumEast ChinaQingdao266580ShandongChina Key Laboratory of Unconventional Oil&Gas Development Ministry of EducationQingdao266580ShandongChina CNPC Engineering Technology R&D Company Ltd. Beijing102206China Co-Innovation Center of Efficient Processing and Utilization of Forest Resources College of Materials Science and EngineeringNanjing Forestry UniversityNanjing210000JiangsuChina Department of Petroleum Engineering NED University of Engineering&Technology395007Pakistan

Oil-based drilling fluids possess excellent properties such as shale inhibition, cuttings suspension, and superior lubrication, making them essential in the development of unconventional oil and gas ***, wellbore instability, caused by the invasion of drilling fluids into shale formations, remains a significant challenge for the safe and efficient extraction of shale oil and gas. This work reports the preparation of mesoporous SiO2nanoparticles with low surface energy, utilized as multifunctional agents to enhance the performance of oil-based drilling fluids aimed at improving wellbore stability. The results indicate that the coating prepared from these nanoparticles exhibit excellent hydrophobicity and antifouling properties, increasing the water contact angle from 32°to 146°and oil contact angle from 24°to134.8°. Additionally, these nanoparticles exhibit exceptional chemical stability and thermal *** these nanoparticles into oil-based drilling fluids reduced the surface energy of the mud cake from 34.99 to 8.17 m J·m-2and increased the roughness of shale from 0.26 to 2.39 μm. These modifications rendered the mud cake and shale surfaces amphiphobic, effectively mitigating capillary infiltration and delaying the long-term strength degradation of shale in oil-based drilling fluids. After 28days of immersion in oil-based drilling fluid, shale cores treated with MF-SiO2exhibited a 30.5% increase in compressive strength compared to untreated cores. Additionally, these nanoparticles demonstrated the ability to penetrate and seal rock pores, reducing the API filtration volume of the drilling fluid from11.2 to 7.6 m L. This study introduces a novel approach to enhance the development of shale gas and oil resources, offering a promising strategy for wellbore stabilization in oil-based drilling fluid systems.

关键词： Fluorosilane Wettability Wellbore stability drilling engineering Self-cleaning Antifouling

来源：评论

学校读者我要写书评

暂无评论

Study on the Multiphase Flow Behavior in the Jet Pump Lifted Natural Gas Hydrate Wells with Combined depressurization and Heat Injection Method

Study on the Multiphase Flow Behavior in the Jet Pump Lifted...

引用

International Petroleum and Petrochemical technology Conference 2024, IPPTC 2024

作者： Ping, Xiaolin Han, Guoqing Zhang, Jiqun Wang, Hongliang Liu, Changchun Liu, Jungang China Research Institute of Petroleum Exploration & Development PetroChina China Artificial Intelligence Technology R&D Center for Exploration and Development CNPC China PetroChina Changqing Oilfield Company China Exploration & Development Research Institute of Changqing Oilfield China

Natural gas hydrate production tests have been carried out successfully with different exploitation methods and gas recovery drainage technologies. The purpose of this study is to elucidate the fluid flow behavior in the jet pump lifted natural gas hydrate wells and optimize hot water injection parameters for the jet pump drainage gas recovery technology. The mechanism of jet pump drainage recovery of natural gas hydrate wells was analyzed and its applicability to natural gas hydrate exploitation with combined depressurization and heat injection method was demonstrated. In addition, multiphase flow models of tubing and annulus were established respectively for the phenomenon of countercurrent flow of heat exchange in the jet pump drainage gas recovery process, and the corresponding multiphase flow laws were derived. Based on the study of multiphase flow, sensitivity analysis and optimization of heat injection parameters were performed. It has been demonstrated that jet pump drainage gas recovery technology is suitable for the exploitation of onshore natural gas hydrate with combined depressurization and heat injection method. The multihphase flow behavior in the tubing and annulus of the jet pump lifted natural gas hydrate wells was disclosed in this study. Numerical simulation results show that the temperature and pressure distribution in the wellbore of the jet pump lifted natural gas hydrate wells during the recovery process are affected by the injection conditions. This study provides theoretical guidance for the production optimization and hydrate prevention and control in the wellbore of the jet pump lifted natural gas hydrate wells. © 2024 Institute of Physics Publishing. All rights reserved.

关键词： Sensitivity analysis

来源：评论

学校读者我要写书评

暂无评论

Study on Fracture Propagation in Tight Sandstone by Large-Scale Physical Simulation Experiments 12th

Study on Fracture Propagation in Tight Sandstone by Large-Sc...

引用

12th International Field Exploration and development Conference, IFEdC 2022

作者： Li, Jia-Ying Qi, Chun-Yan Wu, Bo-Hong Gu, Ye Zhou, Tuo CNPC Engineering Technology R&D Company Limited Beijing China CNPC Research Institute of Petroleum Exploration and Development Beijing China

ISBN: (纸本)9789819919635

Physical simulation experiment on hydraulic fracturing is an effective and reliablemethod to understand the initiation and propagation of hydraulic fractures. However, shale and cement samples are mostly used in current experiments, while tight sandstone is seldom studied. Besides, the experiments are usually conducted with single-stage fracturing, ignoring the interaction between fractures in the actual fracturing. In this paper, a pioneer large-scale physical simulation experiment is conducted by multi-stage hydraulic fracturing to reveal the initiation and propagation of fracture in tight sandstone. Two groups of tight sandstone samples were prepared as the size of 28 × 28 ×36,where four circular notches were designed on the wellbore to represent fracturing clusters. The tests were performed by a large block polyaxial stress frame and the acoustic emissions data were observed to indicate the features of fracture complexity. Consequently, the effects of hydraulic fracture interaction, pumping rate and rate pulsing on fracture propagation were studied. The results showed that the simple fractures were mainly formed in tight sandstone, while the complex fractures were rarely formed since the mutual inhibition between fractures under stress shadow. The fracture initiation and breakdown pressures increase gradually with the pump rate, while the rate change has no significant effect on the fracture radius. The rate pumping can effectively increase fracture complexity, further improving the effect of reservoir stimulation. This work successfully reveals the effects of different factors on fracture initiation and propagation, offers an innovative method of physical simulation experiment on hydraulic fracturing, and provides a significant reference for fracturing design optimization of tight sandstone. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2023.

关键词： Fracture

来源：评论

学校读者我要写书评

暂无评论

Epoxy Molding Compound bleeding reduction on surface mount semiconductor device

Epoxy Molding Compound bleeding reduction on surface mount s...

引用

作者： Viviani, Fulvio Leone, Federico Seki, Hidetoshi Ishii, Masami Backend Manufactoring and Technology R&D STMicroelectronics Agrate Brianza Italy Information & Telecommunication Materials Research Laboratory Sumitomo Bakelite Japan

Epoxy Molding Compound (EMC) bleed consists of a transparent layer of resin which mainly could occur during molding injection at material packing stage. resin bleeds on exposed pad of a Surface Mount device (SMd) can significantly impact the solderability performances of the package, causing failure of the product. de-flashing process after molding is generally performed to eliminate the resin bleed. However, de-flashing can be performed on post-plated leadframes without critical drawback, while it is not recommended on pre-plated leadframes due to the high risk of damaging the finishing surface. In this study, an alternative approach aimed to reduce or eliminate molding compound bleed by optimizing the inorganic part of the molding compound formulation is presented. Besides the quality improvement, the presented approach provides an economical advantage since, by tuning the properties of the filler inside the EMC, it is possible to eliminate the de-flashing process from the assembly flow of a package and consequently reduce the manufacturing cost. © 2023 IMAPS-International Microelectronics and Packaging Society. All rights reserved.

关键词： resins

来源：评论

学校读者我要写书评

暂无评论

Progress in the development of IOWN technology

引用

NTT Technical review 2022年第5期20卷 11-17页

作者： Kawashima, Masahisa Aragane, Yosuke IOWN Development Office R&D Planning Department NTT Japan The IOWN GF Technology Working Group Japan IOWN Global Forum Japan

Technical improvements in full-stack layers are essential to develop a future infrastructure with higher capacity, lower latency, and lower power consumption toward a cyber-physical society. NTT announced its roadmap for this technology, the Innovative Optical and Wireless Network (IOWN), in April 2020 and has accelerated to implement the roadmap with global partners of the IOWN Global Forum (IOWN GF). IOWN GF developed and published a series of deliverables on Open All-Photonic Network (Open APN), IOWN for Mobile Network, Fiber Sensing for Open APN, data-Centric Infrastructure, IOWN data Hub, and a reference Implementation Model. This article provides an overview of these deliverables and describes the growth of IOWN GF and its activities. © 2022 Nippon Telegraph and Telephone Corp.. All rights reserved.

关键词： Wireless networks

来源：评论

学校读者我要写书评

暂无评论

Optimization of the controlled cooling condition in batch-type furnace for the recycled Al-Mg-Si based alloy sheets 28

Optimization of the controlled cooling condition in batch-ty...

引用

28th Congress of the International Federation for Heat Treatment and Surface Engineering, IFHTSE 2023

作者： Kang, Heon Kim, Sang Gweon Yeo, Kuk Hyun Kim, dae Young Yoon, Young Ok Shin, Jae Hyuck Jung, Young Kil Kim, SE Hoon Kim, Jin Pyeong Heat & Surface Technology R&D Department Korea Institute of Industrial Technology 113-58 Seohaean-ro Gyeonggi-do Siheung-si Korea Republic of Industrial Materials Processing R&D Department Korea Institute of Industrial Technology 156 Gaetbeol-ro Yeonsu-gu Incheon Korea Republic of Advanced Materials R&D Department Korea Automotive Technology Institute 303 Pungse-ro Pungse-myeon Dongsam-Gu Chungnam Cheonan-si Korea Republic of

ISBN: (纸本)9781713889533

In this study, the shape, size and distribution of precipitates and/or clusters according to the alloy composition (Mg: 0.4 ~ 0.8 w.t. %, Si: 0.6 ~ 1.2 w.t. %) of Al-Mg-Si based alloy sheets were simulated by Monte Carlo method in the condition of batch-type heat treatment process. Based on the results, the precipitates and clusters in the suggested cooling with and without pre-aging conditions (Solid-solution condition: 400 ~ 500 ºC, cooling condition: ~150 ºC, pre-aging condition: 80 ~ 120 ºC) were predicted by Matcalc software (computer simulation of phase transformation and microstructure evolution in metallic systems). The optimized heat treatment conditions derived based on the analysis results were applied to the small-sized coils, and the microstructure and mechanical properties were evaluated respectively. Most cluster sizes were less than 5nm observed in HrTEM. The yield stress and elongation to failure were above 100 MPa and 25 %, respectively. In addition, the Al-Mg-Si based sheets containing the scraps of combinations of 3xxx, 5xxx and 6xxx series sheets were heat treated in the same condition, and microstructure and mechanical properties of the heat-treated recycled sheets were evaluated. © 2023 28th IFHTSE 2023 Congress. All rights reserved.

关键词： Solid solutions

来源：评论

学校读者我要写书评

暂无评论

On the wear mechanisms of uncoated and coated pcBN tools during turning of 17–4 PH martensitic stainless steel

引用

International Journal of refractory Metals and Hard materials 2025年 127卷

作者： Bjerke, A. Casas, J. Lenrick, F. Andersson, J.M. M'Saoubi, r. Bushlya, V. Division of Production and Materials Engineering Lund University Box 118 Lund22100 Sweden R&D Materials and Technology Development Seco Tools AB Fagersta737 82 Sweden

Polycrystalline cubic boron nitride (pcBN) is a very promising tool material for turning martensitic stainless steels at high cutting speeds (vc > 200 m/min). The competitive advantage of pcBN over cemented carbide increases as the cutting speed is increased. Changing the speed might lead to a shift in the wear balance and hence the knowledge about tool wear below vc = 200 m/min might not be applicable at vc = 600 m/min. The coatings designed for the lower speed range might also not be performing in the same way at higher speeds. This paper investigates the wear mechanism of uncoated and (Ti,Al)N coated pcBN tools when turning 17–4 PH in a hardened condition at speeds vc = 200–600 m/min. Both scanning and transmission electron microscopy are used to study the worn tools. The in-depth analysis reveals that adhesive wear is only active at low speeds. Increasing the speed does however lead to more wear by diffusion and oxidation. The cBN is preferentially worn out, leaving the TiC binder at the tool-chip interface. Oxidation results in the accelerated wear of the pcBN but also in the formation of metal oxides within the adhered build up layer. The (Ti,Al)N coating does not significantly extend the tool life within this speed range, but it suppresses the adhesive wear mechanism preventing premature tool failure. © 2024 The Author(s)

关键词： Cubic boron nitride

来源：评论

学校读者我要写书评

暂无评论

New Understanding of Matrix-Fracture dual Media reservoir damage Based on Pressure-Controlled Fracturing 58

New Understanding of Matrix-Fracture Dual Media Reservoir Da...

引用

58th US rock Mechanics / Geomechanics Symposium 2024, ArMA 2024

作者： Zhang, Yang Qiao, Yan Zhang, Shiling Wu, Hongjun Bai, Jie Guo, Xudong Li, Senmu CNPC Engineering Technology R&D Company Limited BeiJing China Research Institute of Petroleum Exploration & Development BeiJing China PetroChina Tuha Oilfield Company HaMi China

ISBN: (纸本)9798331305086

The Tarim Oilfield Krasu tectonic zone is deeply burial, high temperature, low porosity and permeability, and constitutes the complex matrix-fracture dual media seepage channels. reservoir damage evaluation for such reservoirs is important for subsequent development. In this study, we firstly processed the fracture network in the reservoir core by controlled-pressure fracturing to improve the fracture tortuosity, and verified the reasonableness of this method by CT scanning and shape factor calculation. Then, based on the dual-media condition, we establish the water/oil-lock damage evaluation method, the stress-sensitive evaluation method, the fluid-sensitive evaluation method, and the in-well fluid damage evaluation method. Based on the above methods, the sensitivity of matrix-fracture dual-media reservoirs is moderately strong for water-oil locking, stress, and fluid salinity, moderately weak for liquid alkalinity, weakest for liquid flow rate. In-well fluid damage replacement experiments show that reservoir damage caused by first contact is the most important factor of reservoir damage during the whole process of drilling-completion-reconstruction. For deep tight reservoirs, fracturing fluid is easy to cause serious reservoir damage, and it is necessary to pay attention to reservoir protection during fracturing in low-yield blocks. Copyright 2024 ArMA, American rock Mechanics Association.

关键词： Fracturing fluids

来源：评论

学校读者我要写书评

暂无评论

Constructing high-toughness polyimide binder with robust polarity and ion-conductive mechanisms ensuring long-term operational stability of silicon-based anodes

引用

Journal of Energy Chemistry 2024年第6期93卷 580-591,I0014页

作者： Yongjun Kang Nanxi dong Fangzhou Liu daolei Lin Bingxue Liu Guofeng Tian Shengli Qi dezhen Wu State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical TechnologyBeijing 100029China ENFI R&D Institute China ENFI Engineering CorporationBeijing 100038China China Automotive Battery Research Institute Co. Ltd.Beijing 101407China Changzhou Institute of Advanced Materials Beijing University of Chemical TechnologyChangzhou 213164JiangsuChina

Silicon-based materials have demonstrated remarkable potential in high-energy-density batteries owing to their high theoretical ***,the significant volume expansion of silicon seriously hinders its utilization as a lithium-ion ***,a functionalized high-toughness polyimide(PdMI) is synthesized by copolymerizing the 4,4'-Oxydiphthalic anhydride(OdPA) with 4,4'-oxydianiline(OdA),2,3-diaminobenzoic acid(dABA),and 1,3-bis(3-aminopropyl)-tetramethyl disiloxane(dMS).The combination of rigid benzene rings and flexible oxygen groups(-O-) in the PdMI molecular chain via a rigidness/softness coupling mechanism contributes to high *** plentiful polar carboxyl(-COOH) groups establish robust bonding *** ionic transport is achieved by incorporating the flexible siloxane segment(Si-O-Si),which imparts high molecular chain motility and augments free volume holes to facilitate lithium-ion transport(9.8 × 10^(-10) cm^(2) s^(-1) vs.16 × 10^(-10) cm^(2) s~(-1)).As expected,the SiO_x@PdMI-1.5 electrode delivers brilliant long-term cycle performance with a remarkable capacity retention of 85% over 500 cycles at 1.3 A g^(-1).The well-designed functionalized polyimide also significantly enhances the electrochemical properties of Si nanoparticles ***,the assembled SiO_x@PdMI-1.5/NCM811 full cell delivers a high retention of 80% after 100 *** perspective of the binder design strategy based on polyimide modification delivers a novel path toward high-capacity electrodes for high-energy-density batteries.

关键词： Polyimide binder High toughness robust ionic transport Silicon-based anodes Lithium-ion batteries

来源：评论

学校读者我要写书评

暂无评论

A Zn-Cluster-Based MOF for Efficient Separation of C3H8/C2H6/CH4

Chem and Bio Engineering

引用

Chem and Bio Engineering 2024年第8期1卷 658-663页

作者： Wang, Yue Lai, Yujie Liu, Jieyu Fan, Ziwen Quan, Xueheng Zhang, Tong Wang, Changhong Xu, Cong Chen, Qi Niu, Zheng College of Chemistry Chemical Engineering and Materials Science Soochow University Jiangsu Suzhou215123 China Hebei Normal University Hebei Shijiazhuang050024 China Technology R&D Center Jinhong Gas Co. Ltd. Jiangsu Suzhou215143 China

The separation and purification of methane from natural gas are crucial chemical processes. Herein, we report a Zn-cluster-based MOF (SdMOF-3), enabling the efficient separation of mixed low-carbon alkanes. The unique Zn clusters in the MOF enhance its interaction with hydrogen atoms in alkanes, thus realizing the separation of saturated light alkanes. Single-component gas adsorption tests revealed that SdMOF-3 exhibits significantly higher affinity for C3H8 compared to CH4 and C2H6 at 298 K. dynamic column penetration experiments with mixed gases demonstrated the excellent separation performance of SdMOF-3 for separating C3H8 and C2H6 from CH4 © 2024 The Authors. Co-published by Zhejiang University and American Chemical Society.

关键词：

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：