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Concept and key technology of“multi-scale high-density”fracturing technology:A case study of tight sandstone gas reservoirs in the western Sichuan Basin 认领 引用 被引量：4
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作者 Jianchun Guo Qianli Lu +5 位作者 Zhuang Liu Fanhui Zeng Tonglou Guo Yan Liu Lin Liu Ling Qiu 《Natural Gas Industry B》 2023年第3期283-292,共10页
There are abundant tight sandstone gas resources in the Sichuan Basin,which are the important objects of reserve and production increase and large-scale development.Due to their discontinuous sandbody distribution,nar... There are abundant tight sandstone gas resources in the Sichuan Basin,which are the important objects of reserve and production increase and large-scale development.Due to their discontinuous sandbody distribution,narrow channels,and strong horizontal and vertical heteroge-neity,however,conventional fracturing technologies cannot achieve the ideal stimulation effect here.In order to address this difficulty,this paper dissects the geology engineering characteristics of tight sandstone gas reservoirs in the western Sichuan Basin.Starting from the seepage mechanics theory,the concept of“multi-scale high-density”tight gas fracturing technology is put forward by fully referring to the experience of previous multi-round reservoir stimulation in the western Sichuan Basin and the idea of unconventional volume fracturing technology.In addition,its conceptual connotation,key technologies and implementation effects are illustrated.The following research results are obtained.First,the seepage characteristics make it necessary for the efficient production of tight gas reserves to increase fracture density and stimulated reservoir volume(SRV).Second,the“multi-scale high-density”fracturing technology emphasizes the rationality of high-density hydraulic fracture creation and the matching of multi-scale fractureflow capacity,and aims at establishing a multi-level fracture system with effective and steady gasflow in tight reservoirs through fracturing.Third,the“wide,dense,support,stable,and precise”fracturing technology is applied to improve single well production and estimated ultimate recovery(EUR).Fourth,the engineering practice of“multi-scale high-density”fracturing technology in the tight reservoirs of Jurassic Shaximiao Formation and Triassic Xujiahe Formation in the ZJ Gas Field realizes the average single well production rate of 15.6104 m3/d,which is 1.96 times higher than that before the stimulation.Obviously,it provides powerful support for the operation of the ZJ Gas Field into a giant gasfield with the reserves of 100 billion cubic meters.In conclusion,the formation of the concept and key technologies of“multi-scale high-density”fracturing technology effectively supports the efficient development of tight gas in the western Sichuan Basin and points out the following research direction of tight gas reservoir stimulation.The research results provide reference and guidance for the large-scale benefit development of tight gas in China. 展开更多
关键词 Sichuan Basin Triassic Xujiahe Formation Jurassic Shaximiao Formation Tight Gas Reservoir stimulation Hydraulic fracturing Multi-scale high-density:Fracture propagation:Key technology
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Key Technology Research on the Efficient Exploitation and Comprehensive Utilization of Resources in the Deep Jinchuan Nickel Deposit 认领 引用 被引量：10
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作者 Zhiqiang Yang 《Engineering》 SCIE EI CAS 2017年第4期559-566,共8页
To understand the resource features and geology in the deep Jinchuan nickel deposit, difficult geological conditions were systematically analyzed, including high stress, fragmentized ore rock, prevalent deformation, d... To understand the resource features and geology in the deep Jinchuan nickel deposit, difficult geological conditions were systematically analyzed, including high stress, fragmentized ore rock, prevalent deformation, difficult tunnel support, complicated rock mechanics, and low mining recovery. An integrated technology package was built for safe, efficient, and continuous mining in a deep, massive, and complex nickel and cobalt mine. This was done by the invention of a large-area continuous mining method with honeycomb drives; the establishment of ground control theory and a technology package for high-stress and fragmented ore rock： and the development of a new type of backfilling cement material, along with a deep backfilling technology that comprises the pipeline transport of high-density slurry with coarse aggregates. In this way, good solutions to existing problems were found to permit the efficient exploitation and comprehensive utilization of the resources in the deep Jinchuan nickel mine. In addition, a technological demonstration in an underground mine was performed using the cemented undercut-and-fill mining method for stressful, frag- mented, and rheological rock. 展开更多
关键词 Deep mining Efficient exploitation Comprehensive utilization Key technology
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Research on the key technology of mobile ERP 认领 引用
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作者 何霆 鲁浩 徐晓飞 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2007年第4期480-484,共5页
A new business management mode-agile & convenient management mode (ACM) was proposed because of large scale mobile computing and mobile business. As an efficient approach to ACM, Mobile ERP (MERP), including its c... A new business management mode-agile & convenient management mode (ACM) was proposed because of large scale mobile computing and mobile business. As an efficient approach to ACM, Mobile ERP (MERP), including its concept and four-tier architecture was introduced firstly. Then, the two key technologies of implementing MERP about message service and wireless WAP service were developed. Meanwhile, an official MERP system was also implemented based on our CERP software system by aglets. And it was applied by Henan Tongli Cement Group in China. In comparison with the traditional ERP system, the new system could improve the efficiency and level of management, and reduce the management cost of enterprise. 展开更多
关键词 mobile ERP architecture key technology
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Goals and Key Technology of Fertilizer-pesticide "Double Reduction" and Synergism for Greenhouse Strawberry 认领 引用
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作者 王建华 成玮 +1 位作者 邬劼 吉沐祥 《Agricultural Science & Technology》 CAS 2017年第11期2113-2117,2122,共5页
In order to develop green good, reduce the use of chemical fertilizer and pesticide, realize ＂double reduction＂ and synergism, improve safety and quality of products, protect the ecological environment and promote t... In order to develop green good, reduce the use of chemical fertilizer and pesticide, realize ＂double reduction＂ and synergism, improve safety and quality of products, protect the ecological environment and promote the healthy and steady development of strawberry industry, the goals and key technology of fertilizer-pesticide ＂double reduction＂ and synergism for greenhouse strawberry are summed up in this paper targeting at the current situation of strawberry production and combined with the new technology achievements at home and abroad. The key technology includes six items： healthy seedling cultivating technique, soil improvement and continuous cropping obstacle treatment technique, agricultural ecological prevention tech- nique, physicochemical trap of pest control technique, biological control technique and low residual risk chemical control technique. 展开更多
关键词 Greenhouse strawberry Green development ＂Double reduction＂ and synergism Technology target Key technology
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KEY TECHNOLOGY OF SEMI-CONTINOUS CONVEYOR SYSTEM IN DEEP SURFACE MINE 认领 引用
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作者 苏靖 刘胜富 任天贵 《International Journal of Minerals,Metallurgy and Materials》 SCIE EI CAS 1996年第2期102+99-102,共103页
The key technology of semi-continuous conveyor system decides the successful using of this system. The key technology includes optimal initial building depth of this system,the crusher moving step and the layout of co... The key technology of semi-continuous conveyor system decides the successful using of this system. The key technology includes optimal initial building depth of this system,the crusher moving step and the layout of conveyor system are studied, and their calculating models are built up. 展开更多
关键词 surface mine semi-continous conveyor system key technology
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Key technology and innovation of Sutong Bridge 认领 引用
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作者 Zhang Xiongwen 《Engineering Sciences》 2010年第2期31-38,共8页
Sutong Bridge is a cable-stayed bridge across Yangtze River with the main span of 1 088 m. This article outlines technical challenges,key technology and innovation in the design and construction such as scour protecti... Sutong Bridge is a cable-stayed bridge across Yangtze River with the main span of 1 088 m. This article outlines technical challenges,key technology and innovation in the design and construction such as scour protection,lowering steel cofferdam,construction platform establishment,construction and control of pylons,fabrication and damping of long cables,erection and control of steel box girders. 展开更多
关键词 Sutong Bridge key technology innovation structure system foundation pylon stay cables steel girder
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Research on Optimal Control Method and Key Technology of New Energy Power System 认领 引用
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作者 WANG Zheng WANG Chuanyu LIU Xinglong 《外文科技期刊数据库（文摘版）工程技术》 2021年第8期180-182,共3页
With the rapid development of the times, whether it is people's daily life or social production, the demand for energy is increasing rapidly. The consumption of non-renewable energy is very serious, which leads to... With the rapid development of the times, whether it is people's daily life or social production, the demand for energy is increasing rapidly. The consumption of non-renewable energy is very serious, which leads to various environmental pollution problems and threatens the development of human society. Under this background, the application of new energy power system has become a new direction to solve the above problems. However, at this stage, the application of new energy power is facing the dual threat of uncertainty and instability. Therefore, it is very necessary to actively explore the optimization control methods and key technologies of new energy power system, which is also the focus of this paper. 展开更多
关键词 power system new energy sources optimization control key technology method research
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Analysis of the Key Technology of Construction Quality Control of Prefabricated Buildings 认领 引用
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作者 GUOFeng 《外文科技期刊数据库（文摘版）工程技术》 2022年第8期028-031,共4页
Prefabricated construction technology is a great progress in the development of construction engineering technology, directly related to peoples vital interests. Especially in the current domestic and international bu... Prefabricated construction technology is a great progress in the development of construction engineering technology, directly related to peoples vital interests. Especially in the current domestic and international building modeling, construction quality requirements are higher and higher. With the development of new materials and new technologies, the prefabricated building construction technology has been developed accordingly, so that the assembly structure form and materials have been further improved. In terms of construction engineering, standard formwork can be used for prefabricated beams, prefabricated floors, prefabricated walls, etc. In all types of prefabricated parts, different specifications of the template should be reduced as far as possible to achieve better economic results. Precast building components shall be prefabricated to the same size and quantity, with differences in size resulting in imprecise assembly. At the same time, in the construction process, pay attention to the handling and lifting of components as far as possible to reduce the overall prefabrication of large components. 展开更多
关键词 assembly construction quality control key technology
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Discussion on the Key Technology of the Overall Installation of the Centrifugal Compressor 认领 引用
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作者 ZHANGYongbing 《外文科技期刊数据库（文摘版）工程技术》 2022年第1期191-194,共4页
The centrifugal compressor has the advantages of high precision, high speed, high value and small clearance, and is increasingly widely used in industrial production. However, combined with the actual situation, the c... The centrifugal compressor has the advantages of high precision, high speed, high value and small clearance, and is increasingly widely used in industrial production. However, combined with the actual situation, the centrifugal compressor must ensure the installation accuracy in the installation stage, because this will have an important impact on the operation, service life and performance of the centrifugal compressor, therefore, it is of great significance to ensure the reasonable installation of the overall centrifugal compressor. In the installation stage, we should reduce the vibration, eliminate the noise as far as possible, and strictly control the installation of the growth machine, machine seat, coupling and other parts to ensure the requirements of safe operation. Based on this, this study aims to explore the key technologies for the overall installation of centrifugal compressors. 展开更多
关键词 centrifugal compressor overall installation key technology construction
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Research on Key Technology of Super Deep Foundation Pit Construction under Complex Geological Conditions 认领 引用
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作者 LIU Haijiang 《外文科技期刊数据库（文摘版）工程技术》 2021年第10期029-031,共3页
With the rapid development of China's construction industry, a large number of skyscrapers have appeared in large and medium-sized cities. Since most of the very tall buildings were built in busy urban areas, and ... With the rapid development of China's construction industry, a large number of skyscrapers have appeared in large and medium-sized cities. Since most of the very tall buildings were built in busy urban areas, and the buildings were mainly iconic, the excavation was bound to cause many architectural difficulties. First, the buildings of high height are mainly landmark buildings, and the construction time has strict requirements to speed up the implementation of the work as far as possible, without eliminating uncertainty, and ensure the timely completion of the implementation of the work. Secondly, due to the depth of ultra-high ditches, construction sites are often small, and the population density around the project is too high to apply the slope method. In this regard, ultra-high excavation construction areas are also built around commercial and residential areas. During construction, the surface settlement around the foundation pit is very strict. Finally, superstructures are generally close to highways and traffic is important. Vehicle loads have a significant impact on underground municipal pipelines around excavation work. On this basis, the construction elements of super deep foundation pit under complex conditions are analyzed for reference. 展开更多
关键词 complex geological conditions super deep foundation pit engineering construction key technology
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Analysis of the Key Technology of Large-area Concrete Ground Construction 认领 引用
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作者 HAOLei 《外文科技期刊数据库（文摘版）工程技术》 2022年第2期017-020,共4页
The construction standard of large area concrete floor and ordinary indoor concrete ground requires the control of concrete surface standard. Note the technical problem of construction and grasp the process of constru... The construction standard of large area concrete floor and ordinary indoor concrete ground requires the control of concrete surface standard. Note the technical problem of construction and grasp the process of construction. This paper mainly discusses the different construction structure of large area concrete ground and the key quality of concrete site. 展开更多
关键词 concrete ground construction key technology
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Discussion on Key Technology in Highway Survey Project 认领 引用
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作者 YANG Yanxin 《外文科技期刊数据库（文摘版）工程技术》 2020年第1期060-062,共3页
In the construction process of highway and bridge engineering, it is necessary to conduct a comprehensive survey of the terrain, geology, hydrology and other conditions of the area where the project is located in the ... In the construction process of highway and bridge engineering, it is necessary to conduct a comprehensive survey of the terrain, geology, hydrology and other conditions of the area where the project is located in the early stage of the design, and carry out detailed measurement and lofting of the project during the construction process, which is the engineering design Provide accurate basic data guidance with construction and realize dynamic monitoring of construction links. Therefore, surveying, surveying and mapping work is an indispensable key link in the construction of highway and bridge engineering. Whether its technology is applicable or not, and whether the measurement methods and methods are standardized or not directly affect the accuracy of the measurement and the result of the calculation. It greatly affects the progress, quality and implementation cost of project construction. Therefore, promoting the optimization of measurement technology and strengthening the supervision of measurement work have become an important content of project construction work. 展开更多
关键词 highway survey key technology discussion
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Application of Key Technology of Soft Foundation Treatment in Highway Engineering Construction 认领 引用
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作者 XING Mingqing 《外文科技期刊数据库（文摘版）工程技术》 2021年第8期495-498,共4页
The current our country is vigorously promoting urbanization construction, highway construction is convenient, promote the economic development of the people's livelihood projects, travel along with the developmen... The current our country is vigorously promoting urbanization construction, highway construction is convenient, promote the economic development of the people's livelihood projects, travel along with the development of social economy, people is higher and higher quality requirements for highway construction, in order to better safeguard people's travel security, prolong service life, need to constantly strengthen the highway engineering construction quality. In the actual engineering construction process, influenced by geological conditions, highway construction often encounter soft soil foundation. Soft soil foundation contains a lot of water and its stability is not high. It must be effectively treated before highway construction can be carried out. Based on this, this paper will focus on the concept and characteristics of subgrade, the application of key technology of soft foundation processing is analyzed and studied. 展开更多
关键词 highway engineering soft foundation treatment key technology
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Key Technology of Water Supply and Drainage Construction in Construction Engineering 认领 引用
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作者 LI Xiushuo 《外文科技期刊数据库（文摘版）工程技术》 2021年第1期460-464,共5页
In recent decades of China's rapid economic development, the construction industry has also experienced a golden period of development, and has made very brilliant achievements. However, we must also see that the ... In recent decades of China's rapid economic development, the construction industry has also experienced a golden period of development, and has made very brilliant achievements. However, we must also see that the development of the traditional construction industry has caused great damage to the environment and excessive consumption of resources. With the development of the concept of energy conservation in the building industry, which has become an inevitable trend. 展开更多
关键词 construction engineering water supply and drainage construction key technology
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Research on the Key Technology of Data Acquisition and Processing of Multi-environment Experiment in Space Station 认领 引用
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作者 HAO Shijie 《外文科技期刊数据库（文摘版）工程技术》 2021年第6期436-437,共2页
At present, with the rapid development of science and technology, based on the requirements of weapon test and identification tasks, the experimental data acquisition and processing space station, which is suitable fo... At present, with the rapid development of science and technology, based on the requirements of weapon test and identification tasks, the experimental data acquisition and processing space station, which is suitable for a variety of extreme natural environments such as alpine, plateau, mountain, jungle, desert, island and reef, has been studied theoretically and in practice. The space station is a dome-shaped structure with scale-shaped modules and basalt reinforced fiber composite materials, providing thermal insulation, ventilation and continuous power supply. It can provide support and guarantee for the real-time monitoring, recovery and information transmission of test data, and meet the basic work and life needs of test personnel. 展开更多
关键词 multi-environment test data acquisition and processing space station key technology research
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SJ-9A/B Satellites Conduct Key Technology Tests 认领 引用
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作者 Jiang Xueying 《Aerospace China》 2012年第4期9-10,共2页
On October 14, two satellites SJ-9A/B were sent into their preset orbits by a LM-2C/SMA launch vehicle, which is the first flight of a series of China's civilian technology experimental satellites. SJ-9A and B are... On October 14, two satellites SJ-9A/B were sent into their preset orbits by a LM-2C/SMA launch vehicle, which is the first flight of a series of China's civilian technology experimental satellites. SJ-9A and B are the first two satellites in the series of civilian technology experimental satellites designed for tests such as long lifetime and high reliability, high precision and high performance of satellite, domestically developed core components, satellite formation 展开更多
关键词 high SJ-9A/B Satellites Conduct Key Technology Tests DFH
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Application and Quality Control of Key Technology in Municipal Road and Bridge Construction 认领 引用
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作者 LI Rong 《外文科技期刊数据库（文摘版）工程技术》 2021年第8期025-028,共4页
With the continuous improvement of social and economic development, the process of urbanization has been accelerated, and people also put forward higher requirements for municipal basic roads. In municipal engineering... With the continuous improvement of social and economic development, the process of urbanization has been accelerated, and people also put forward higher requirements for municipal basic roads. In municipal engineering construction, road and bridge construction is an important part. Municipal road and bridge construction has certain particularity, which puts forward higher requirements for construction technology and construction period, thus increasing the complexity of municipal road and bridge engineering. Therefore, the construction unit needs to improve the on-site construction technology level in the actual construction, so as to improve the construction level of the overall project. This paper puts forward the application of field construction technology of municipal road and bridge, which provides reference for the actual operation of construction units. 展开更多
关键词 municipal administration road and bridge construction key technologies quality control
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Research on Key Technology and Construction of Smart Substation 认领 引用
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作者 XU Qin 《外文科技期刊数据库（文摘版）工程技术》 2021年第9期461-464,共4页
With the development of science and technology, the construction of smart grid is the trend of development. Intelligent substation plays a key role in the construction of intelligent network. Therefore, this paper dis... With the development of science and technology, the construction of smart grid is the trend of development. Intelligent substation plays a key role in the construction of intelligent network. Therefore, this paper discusses the technology and construction of intelligent substation. 展开更多
关键词 intelligent substation key technologies construction research
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Analysis on Key Technology and Instrument Control of Chemical Automation Control 认领 引用
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作者 CUI Jinfu 《外文科技期刊数据库（文摘版）工程技术》 2021年第11期1117-1120,共4页
Chemical production has the characteristics of complexity, great difficulty, accurate technical requirements and high risk. The application of intelligent control technology and instrument control to chemical producti... Chemical production has the characteristics of complexity, great difficulty, accurate technical requirements and high risk. The application of intelligent control technology and instrument control to chemical production can reduce the demand for manual operation, improve the accuracy of chemical production and promote the benign operation of chemical operation. Therefore, the key technologies of intelligent control and instrument control should be deeply analyzed. In order to seek better chemical production technology and control scheme and promote the development of chemical industry. 展开更多
关键词 chemical automation control key technologies instrument control
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Key Technology Analysis and Application Analysis of Industrial Robot Welding 认领 引用
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作者 LIU Shuaijun 《外文科技期刊数据库（文摘版）工程技术》 2021年第4期117-122,共6页
At present, with the continuous development and progress of intelligent technology and computer technology, the requirements for welding products in the market are gradually improved. Therefore, in order to ensure the... At present, with the continuous development and progress of intelligent technology and computer technology, the requirements for welding products in the market are gradually improved. Therefore, in order to ensure the quality and efficiency of welding products, welding robots can be applied in welding work. At present, welding robots have been widely used in the field of welding. Through the use of welding robot, the quality and efficiency of welding production can be improved to a certain extent, the working conditions of operators can be effectively improved, and the product quality can be effectively guaranteed, so as to ensure the product quality. Differentiated manufacturing also plays a role in promoting the modernization and transformation of related industries. Welding robot uses robot instead of manual operation, which involves using welding robot to complete welding work. According to the different welding methods used by welding robots, welding robots can be divided into welding robots, arc welding robots, laser welding robots and friction robots. Welding robot and other types, with the development of automation technology, welding robot can be divided into intelligent robot and teaching breeding robot. 展开更多
关键词 industrial robot key welding technology application
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