The breakthrough of key core technology is a theoretical and practical strategic issue to realize the rise of the country.This paper analyzes the concept of key core technology and its breakthrough and analyzes its ch...The breakthrough of key core technology is a theoretical and practical strategic issue to realize the rise of the country.This paper analyzes the concept of key core technology and its breakthrough and analyzes its characteristics.Based on the perspective of participants,this paper summarizes the influencing factors of key core technology breakthroughs in enterprises:internal and external enterprises,universities and scientific research institutions,and government.This paper expands the relevant research on key core technology breakthroughs and provides inspiration for enterprises to carry out key core technology research and breakthrough practices.展开更多
The core sampling experiments were conducted after hydraulic fracturing in the three-dimensional development zone of Fuling shale gas.Six coring wells of different well types were systematically designed.Based on the ...The core sampling experiments were conducted after hydraulic fracturing in the three-dimensional development zone of Fuling shale gas.Six coring wells of different well types were systematically designed.Based on the integrated engineering technology of post-fracturing drilling,coring and monitoring of shale and the analysis of fracture source tracing,the evaluation of the fracture network after fracturing in the three-dimensional development of shale gas was conducted.The data of core fractures after fracturing indicate that three major types of fractures are formed after fracturing:natural fractures,hydraulic fractures,and fractures induced by external mechanical force,which are further classified into six subcategories:natural structural fractures,natural bedding fractures,hydraulic fractures,hydraulically activated fractures,drilling induced fractures,and fractures induced by core transportation.The forms of the artificial fracture network after fracturing are complex.Hydraulic fractures and hydraulically activated fractures interweave with each other,presenting eight forms of artificial fracture networks,among which the“一”-shaped fracture is the most common,accounting for approximately 70%of the total fractures.When the distance to the fractured wellbore is less than 35 m,the density of the artificial fracture network is relatively high;when it is 35–100 m,the density is lower;and when it is beyond 100 m,the density gradually increases.The results of the fracture tracing in the core sampling area confirm that the current fracturing technology can essentially achieve the differential transformation of the reservoir in the main area of Jiaoshiba block in Fuling.The three-layer three-dimensional development model can efficiently utilize shale gas reserves,although there is still room for improvement in the complexity and propagation uniformity of fractures.It is necessary to further optimize technologies such as close-cutting combined with temporary blocking and deflection within fractures or at fracture mouths,as well as limited flow perforation techniques,to promote the balanced initiation and extension of fractures.展开更多
The global textile supply chain is rapidly reshaping.China's textile industry faces unprecedented challenges and op-portunities in its high-end transformation.Breaking through hinges on independent innovation in c...The global textile supply chain is rapidly reshaping.China's textile industry faces unprecedented challenges and op-portunities in its high-end transformation.Breaking through hinges on independent innovation in core technologies and do-mestic substitution for textile machinery.News that Wanzhou Group,a leading textile company in Lanxi,Zhejiang,is replacing imported air jet looms with domestic ones has drawn significant industry attention.Driving this pivotal shift is Qingdao Haijia Machinery Co.,Ltd.(hereinafter referred to Haijia),a previously little-known domestic player in the air jet loom sector.展开更多
Objective To study the core technology in the field of vaccines from the perspective of patents,so as to provide reference for China’s vaccine research and development(R&D)enterprises when formulating development...Objective To study the core technology in the field of vaccines from the perspective of patents,so as to provide reference for China’s vaccine research and development(R&D)enterprises when formulating development strategies.Methods Social network analysis combined with various central indicators was used to identify the core technologies in the vaccine field and the market value of the identified core technologies was evaluated through recency-frequency-monetary(RFM)customer market value assessment model.Finally,the Condorcet voting method was applied for prediction.Results and Conclusion At present,the core technology of the vaccine field is concentrated in A61P31,which has both technical and market value with great potentials.Based on this,this paper proposes that China’s vaccine industry should shift the focus of R&D from the disease treatment to prevention.R&D enterprises should also follow the overall development trend to carry out vaccine R&D activities.展开更多
This study took the Gulong Shale in the Upper Cretaceous Qingshankou Formation of the Songliao Basin,NE China,as an example.Through paleolake-level reconstruction and comprehensive analyses on types of lamina,vertical...This study took the Gulong Shale in the Upper Cretaceous Qingshankou Formation of the Songliao Basin,NE China,as an example.Through paleolake-level reconstruction and comprehensive analyses on types of lamina,vertical associations of lithofacies,as well as stages and controlling factors of sedimentary evolution,the cyclic changes of waters,paleoclimate,and continental clastic supply intensity in the lake basin during the deposition of the Qingshankou Formation were discussed.The impacts of lithofacies compositions/structures on oil-bearing property,the relation between reservoir performance and lithofacies compositions/structures,the differences of lithofacies in mechanical properties,and the shale oil occurrence and movability in different lithofacies were investigated.The insights of this study provide a significant guideline for evaluation of shale oil enrichment layers/zones.The non-marine shale sedimentology is expected to evolve into an interdisciplinary science on the basis of sedimentary petrology and petroleum geology,which reveals the physical,chemical and biological actions,and the distribution characteristics and evolution patterns of minerals,organic matter,pores,fluid,and phases,in the transportation,sedimentation,water-rock interaction,diagenesis and evolution processes.Such research will focus on eight aspects:lithofacies and organic matter distribution prediction under a sequence stratigraphic framework for non-marine shale strata;lithofacies paleogeography of shale strata based on the forward modeling of sedimentation;origins of non-marine shale lamina and log-based identification of lamina combinations;source of organic matter in shale and its enrichment process;non-marine shale lithofacies classification by rigid particles+plastic components+pore-fracture system;multi-field coupling organic-inorganic interaction mechanism in shale diagenesis;new methods and intelligent core technology for shale reservoir multi-scale characterization;and quantitative evaluation and intelligent analysis system of shale reservoir heterogeneity.展开更多
This paper focuses on the independent design and construction of HYSY981. HYSY981,which China National Offshore Oil Corporation(CNOOC) possesses its intellectual property right,is brought forward by advanced research,...This paper focuses on the independent design and construction of HYSY981. HYSY981,which China National Offshore Oil Corporation(CNOOC) possesses its intellectual property right,is brought forward by advanced research,concept design and combined basic design. The key technologies are the researches concerning global design,system integration,platform positioning,global performance analysis,structural strength and fatigue analysis,environment effect assessment of South China Sea,basin test and tunnel test,and construction technology of platform. Core technology of design and construction for the 6th deep water semi-submersible rig is held. Independent detail design and construction are also accomplished. These have improved technology of key equipment for China offshore oil exploitation.展开更多
In the period of“13th Five-Year Plan”,domestic deep and ultra-deep oil/gas well drilling technologies were developed quickly and a great number of technological achievements were obtained by means of continuous rese...In the period of“13th Five-Year Plan”,domestic deep and ultra-deep oil/gas well drilling technologies were developed quickly and a great number of technological achievements were obtained by means of continuous researches,including:(1)high-end devices,such as automatic drilling rig,managed pressure drilling,logging,cementing and completion technology,high-torque top drive system,and deep-well coiled tubing operation unit;(2)advanced tools,such as vertical drilling tool,non-planar tooth bit,high-strength expandable tubular,high-temperature,high-torque and long-life screw rod,torsion impact tool,synergistic damping based rock breaking tool,measurement while drilling tool,and safety monitoring tool;(3)core additives,such as temperature-resistance high-density oil based drilling fluid,high-performance water based drilling fluid,ductile cement slurry,and self-healing cement slurry;(4)life-cycle wellbore integrity technology system.Nevertheless,oil and gas well drilling and completion still faces severe challenges,including deep(great burial depth),steep(large formation dip),narrow(narrow pressure window),thick(thick gravel layer,salt bed and other complex intervals),difficult(complex multi-pressure system,abundant complex accidents and poor drillability)and high(high temperature,high pressure and high acid).Facing these challenges,the following suggestions are proposed.The key to the oil and gas reserve and production increase during the 14th Five-Year Plan and afterwards is till deep and ultra-deep layers.And it is necessary to focus on above mentioned geological difficulties to research key core technologies,such as automatic and intelligent drilling equipment,ultra-high temperature wellbore working fluid,pre-exploration while drilling and digital twin well construction,so as to realize the iterative upgrading of traditional superior technologies and improve the ability to drill deep and ultra-deep wells safely,quickly and optimally.In conclusion,during the 13th Five-Year Plan,China exceeded America in the number of ultra-deep wells for the first time and its well depth stepped up to a new stage of 8000 m,which plays an important role in supporting the development of deep oil and gas exploration and development and improving the market competitiveness of drilling and completion.展开更多
A giant gasfield refers to a gasfield with proved geological reserves of natural gas more than 30 billion cubic meters,peak annual output of natural gas more than 1 billion cubic meters,and a certain plateau period.It...A giant gasfield refers to a gasfield with proved geological reserves of natural gas more than 30 billion cubic meters,peak annual output of natural gas more than 1 billion cubic meters,and a certain plateau period.It is an important foundation for the rapid growth of China's natural gas reserves and production and its long-term stable development in the future.And it is also the key to ensure the security of gas supply.By systematically analyzing the development practice of more than 260 gasfields at home and abroad and dissecting and simulating typical gasfields,this paper comprehensively studied the connotation,core technology and whole life cycle index system on the scientific development of giant gasfields.It is indicated that the scientific development connotation of giant gasfields consists of the following parts.First,the natural gas development concept with“water identification,control and treatment”as the technical system is put forward.That is to carry out“water-control development”in conventional gasfields and hydraulic fracturing development in unconventional gasfields.A reasonable gas production rate should be set according to the types and characteristics of gas reservoirs.Second,economic and social benefits of gasfield development should be evaluated comprehensively to ensure its long-term stable production.Third,the suitable production stabilization mode shall be adopted according to the production characteristics of gas wells and the development characteristics of reservoirs.Fourth,the recoverable reserves of a gasfield,the development laws of formation water and artificial waterflooding,the ultimate recovery technological countermeasures of the gasfield,the cost-effective stable period of the gasfield should be determined based on thefine description of conventional and unconventional gas reservoirs in different stages,the development characteristics of gas reservoirs and the monitoring results of production performance.The core technologies in the scientific development of giant gasfields include large-scale optimization technology,scientific well arrangement technology,balanced production technology and deep potential tapping technology.Based on this,several parameters are selected comprehensively as the key indexes for the scientific development of giant gasfields,such as production rate,pressure drop,degree of reserves recovery and output per unit pressure drop,and the whole life cycle index systems for four types of gas reservoirs are established,i.e.,high-pressure gas reservoirs,low-permeability and tight gas reservoirs,fracturedeporous reservoirs,and shale gas reservoirs.In conclusion,the research results enrich and improve the theories of natural gas development geology and are conducive to guiding the scientific development of different-type giant gasfields,thus further promoting the rapid development of natural gas industry in China.展开更多
If one enterprise just takes technological innovation as the way for economic profit but not the combinationalprofit of economy, society and ecology, it will never survive in this fierce competition market. Based on t...If one enterprise just takes technological innovation as the way for economic profit but not the combinationalprofit of economy, society and ecology, it will never survive in this fierce competition market. Based on the relationshipbetween technological innovation and sustainable development, this paper brings forward that technological innovationmust take the sustainable1 development of society as the fundamental goal. Technological innovation should be the realimpulse for the development of society, economy and ecology. On the basis of the analysis on previous technologicalinnovation impetus mechanism, combined with the influential factors, this paper puts forward SD-oriented mechanism oftechnological innovation.展开更多
文摘The breakthrough of key core technology is a theoretical and practical strategic issue to realize the rise of the country.This paper analyzes the concept of key core technology and its breakthrough and analyzes its characteristics.Based on the perspective of participants,this paper summarizes the influencing factors of key core technology breakthroughs in enterprises:internal and external enterprises,universities and scientific research institutions,and government.This paper expands the relevant research on key core technology breakthroughs and provides inspiration for enterprises to carry out key core technology research and breakthrough practices.
文摘The core sampling experiments were conducted after hydraulic fracturing in the three-dimensional development zone of Fuling shale gas.Six coring wells of different well types were systematically designed.Based on the integrated engineering technology of post-fracturing drilling,coring and monitoring of shale and the analysis of fracture source tracing,the evaluation of the fracture network after fracturing in the three-dimensional development of shale gas was conducted.The data of core fractures after fracturing indicate that three major types of fractures are formed after fracturing:natural fractures,hydraulic fractures,and fractures induced by external mechanical force,which are further classified into six subcategories:natural structural fractures,natural bedding fractures,hydraulic fractures,hydraulically activated fractures,drilling induced fractures,and fractures induced by core transportation.The forms of the artificial fracture network after fracturing are complex.Hydraulic fractures and hydraulically activated fractures interweave with each other,presenting eight forms of artificial fracture networks,among which the“一”-shaped fracture is the most common,accounting for approximately 70%of the total fractures.When the distance to the fractured wellbore is less than 35 m,the density of the artificial fracture network is relatively high;when it is 35–100 m,the density is lower;and when it is beyond 100 m,the density gradually increases.The results of the fracture tracing in the core sampling area confirm that the current fracturing technology can essentially achieve the differential transformation of the reservoir in the main area of Jiaoshiba block in Fuling.The three-layer three-dimensional development model can efficiently utilize shale gas reserves,although there is still room for improvement in the complexity and propagation uniformity of fractures.It is necessary to further optimize technologies such as close-cutting combined with temporary blocking and deflection within fractures or at fracture mouths,as well as limited flow perforation techniques,to promote the balanced initiation and extension of fractures.
文摘The global textile supply chain is rapidly reshaping.China's textile industry faces unprecedented challenges and op-portunities in its high-end transformation.Breaking through hinges on independent innovation in core technologies and do-mestic substitution for textile machinery.News that Wanzhou Group,a leading textile company in Lanxi,Zhejiang,is replacing imported air jet looms with domestic ones has drawn significant industry attention.Driving this pivotal shift is Qingdao Haijia Machinery Co.,Ltd.(hereinafter referred to Haijia),a previously little-known domestic player in the air jet loom sector.
文摘Objective To study the core technology in the field of vaccines from the perspective of patents,so as to provide reference for China’s vaccine research and development(R&D)enterprises when formulating development strategies.Methods Social network analysis combined with various central indicators was used to identify the core technologies in the vaccine field and the market value of the identified core technologies was evaluated through recency-frequency-monetary(RFM)customer market value assessment model.Finally,the Condorcet voting method was applied for prediction.Results and Conclusion At present,the core technology of the vaccine field is concentrated in A61P31,which has both technical and market value with great potentials.Based on this,this paper proposes that China’s vaccine industry should shift the focus of R&D from the disease treatment to prevention.R&D enterprises should also follow the overall development trend to carry out vaccine R&D activities.
基金Supported by the National Natural Science Foundation of China(42090020,42090025)Enlisting and Leading Project of Heilongjiang Province(2021ZXJ01A09)PetroChina Scientific Research and Technological Development Project(2019E2601)。
文摘This study took the Gulong Shale in the Upper Cretaceous Qingshankou Formation of the Songliao Basin,NE China,as an example.Through paleolake-level reconstruction and comprehensive analyses on types of lamina,vertical associations of lithofacies,as well as stages and controlling factors of sedimentary evolution,the cyclic changes of waters,paleoclimate,and continental clastic supply intensity in the lake basin during the deposition of the Qingshankou Formation were discussed.The impacts of lithofacies compositions/structures on oil-bearing property,the relation between reservoir performance and lithofacies compositions/structures,the differences of lithofacies in mechanical properties,and the shale oil occurrence and movability in different lithofacies were investigated.The insights of this study provide a significant guideline for evaluation of shale oil enrichment layers/zones.The non-marine shale sedimentology is expected to evolve into an interdisciplinary science on the basis of sedimentary petrology and petroleum geology,which reveals the physical,chemical and biological actions,and the distribution characteristics and evolution patterns of minerals,organic matter,pores,fluid,and phases,in the transportation,sedimentation,water-rock interaction,diagenesis and evolution processes.Such research will focus on eight aspects:lithofacies and organic matter distribution prediction under a sequence stratigraphic framework for non-marine shale strata;lithofacies paleogeography of shale strata based on the forward modeling of sedimentation;origins of non-marine shale lamina and log-based identification of lamina combinations;source of organic matter in shale and its enrichment process;non-marine shale lithofacies classification by rigid particles+plastic components+pore-fracture system;multi-field coupling organic-inorganic interaction mechanism in shale diagenesis;new methods and intelligent core technology for shale reservoir multi-scale characterization;and quantitative evaluation and intelligent analysis system of shale reservoir heterogeneity.
基金National "863"Program "The study of 3000m depth water semi-submersible drilling rig key technology"( No.2006AA09A103)
文摘This paper focuses on the independent design and construction of HYSY981. HYSY981,which China National Offshore Oil Corporation(CNOOC) possesses its intellectual property right,is brought forward by advanced research,concept design and combined basic design. The key technologies are the researches concerning global design,system integration,platform positioning,global performance analysis,structural strength and fatigue analysis,environment effect assessment of South China Sea,basin test and tunnel test,and construction technology of platform. Core technology of design and construction for the 6th deep water semi-submersible rig is held. Independent detail design and construction are also accomplished. These have improved technology of key equipment for China offshore oil exploitation.
基金Project supported by National Key R&D Program of China “Mechanism and Geosteering Method of Intelligent Rock Breaking in Complex Strata”(No.:2019YEA0708302)CNPC Forward Looking Basic Strategic Tech-nology Research Project“Research on optimized and fast drilling technologies for deep and ultra deep wells”(No.:2021DJ4100).
文摘In the period of“13th Five-Year Plan”,domestic deep and ultra-deep oil/gas well drilling technologies were developed quickly and a great number of technological achievements were obtained by means of continuous researches,including:(1)high-end devices,such as automatic drilling rig,managed pressure drilling,logging,cementing and completion technology,high-torque top drive system,and deep-well coiled tubing operation unit;(2)advanced tools,such as vertical drilling tool,non-planar tooth bit,high-strength expandable tubular,high-temperature,high-torque and long-life screw rod,torsion impact tool,synergistic damping based rock breaking tool,measurement while drilling tool,and safety monitoring tool;(3)core additives,such as temperature-resistance high-density oil based drilling fluid,high-performance water based drilling fluid,ductile cement slurry,and self-healing cement slurry;(4)life-cycle wellbore integrity technology system.Nevertheless,oil and gas well drilling and completion still faces severe challenges,including deep(great burial depth),steep(large formation dip),narrow(narrow pressure window),thick(thick gravel layer,salt bed and other complex intervals),difficult(complex multi-pressure system,abundant complex accidents and poor drillability)and high(high temperature,high pressure and high acid).Facing these challenges,the following suggestions are proposed.The key to the oil and gas reserve and production increase during the 14th Five-Year Plan and afterwards is till deep and ultra-deep layers.And it is necessary to focus on above mentioned geological difficulties to research key core technologies,such as automatic and intelligent drilling equipment,ultra-high temperature wellbore working fluid,pre-exploration while drilling and digital twin well construction,so as to realize the iterative upgrading of traditional superior technologies and improve the ability to drill deep and ultra-deep wells safely,quickly and optimally.In conclusion,during the 13th Five-Year Plan,China exceeded America in the number of ultra-deep wells for the first time and its well depth stepped up to a new stage of 8000 m,which plays an important role in supporting the development of deep oil and gas exploration and development and improving the market competitiveness of drilling and completion.
基金supported by the National Science and Technology Major Project"Giant Oil and Gas Fields and CBM Development"(No.:2016ZX05015).
文摘A giant gasfield refers to a gasfield with proved geological reserves of natural gas more than 30 billion cubic meters,peak annual output of natural gas more than 1 billion cubic meters,and a certain plateau period.It is an important foundation for the rapid growth of China's natural gas reserves and production and its long-term stable development in the future.And it is also the key to ensure the security of gas supply.By systematically analyzing the development practice of more than 260 gasfields at home and abroad and dissecting and simulating typical gasfields,this paper comprehensively studied the connotation,core technology and whole life cycle index system on the scientific development of giant gasfields.It is indicated that the scientific development connotation of giant gasfields consists of the following parts.First,the natural gas development concept with“water identification,control and treatment”as the technical system is put forward.That is to carry out“water-control development”in conventional gasfields and hydraulic fracturing development in unconventional gasfields.A reasonable gas production rate should be set according to the types and characteristics of gas reservoirs.Second,economic and social benefits of gasfield development should be evaluated comprehensively to ensure its long-term stable production.Third,the suitable production stabilization mode shall be adopted according to the production characteristics of gas wells and the development characteristics of reservoirs.Fourth,the recoverable reserves of a gasfield,the development laws of formation water and artificial waterflooding,the ultimate recovery technological countermeasures of the gasfield,the cost-effective stable period of the gasfield should be determined based on thefine description of conventional and unconventional gas reservoirs in different stages,the development characteristics of gas reservoirs and the monitoring results of production performance.The core technologies in the scientific development of giant gasfields include large-scale optimization technology,scientific well arrangement technology,balanced production technology and deep potential tapping technology.Based on this,several parameters are selected comprehensively as the key indexes for the scientific development of giant gasfields,such as production rate,pressure drop,degree of reserves recovery and output per unit pressure drop,and the whole life cycle index systems for four types of gas reservoirs are established,i.e.,high-pressure gas reservoirs,low-permeability and tight gas reservoirs,fracturedeporous reservoirs,and shale gas reservoirs.In conclusion,the research results enrich and improve the theories of natural gas development geology and are conducive to guiding the scientific development of different-type giant gasfields,thus further promoting the rapid development of natural gas industry in China.
基金supported by National Natural Science Foundation of China(Grant No.70203001)the Philosophy and Social Science Planning Fund Project of Liaoning Province(Grant No.L06DJY051).
文摘If one enterprise just takes technological innovation as the way for economic profit but not the combinationalprofit of economy, society and ecology, it will never survive in this fierce competition market. Based on the relationshipbetween technological innovation and sustainable development, this paper brings forward that technological innovationmust take the sustainable1 development of society as the fundamental goal. Technological innovation should be the realimpulse for the development of society, economy and ecology. On the basis of the analysis on previous technologicalinnovation impetus mechanism, combined with the influential factors, this paper puts forward SD-oriented mechanism oftechnological innovation.
