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13 August 2021, Volume 40 Issue 3 Previous Issue    Next Issue

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2021, 40(3): 0.  Abstract ( )   PDF (640KB) ( )

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China’s Petroleum Industrial Upstream Technological Development and Its Future Research Areas Jia Chengzao 2021, 40(3): 1-10.  DOI: 10.3969/j.issn.1002-302x.2021.03.001 Abstract ( )   PDF (2317KB) ( )   Petroleum and natural gas are the most important primary energy in the world. Global oil production will be still kept stable and rising in the next 10 to 20 years, while natural gas production will be growing rapidly. China’s oil enterprises carry out the country’s oil and gas development strategy, formulate the innovation-driven technological development strategy, spare no efforts to enhance the domestic oil and gas exploration and development, and established 26 items of important technologies in six main families, substantially improving the capability of upstream technological innovation and the overall level of science and technology. A series of benchmark results have been achieved to technically and effectively help overcome the bottlenecks for exploration and development of large-scale oil and gas fields and fulfill China’s objective for increase on the oil and gas reserves and production. China faces a series of major challenges and technological demands for its petroleum industrial upstream development in the new historical period. It is necessary to carry out the national technological innovation strategy, try hard to improve the capability for independent innovation and original innovation, and continually raise the oil and gas self-sufficient rate. The future scientific research should be focused on such key areas as the technology for substantial improvement of EOR, the technology for exploration of large-scale gas fields and EOR technology for complicated gas fields, the technology for unconventional oil and gas exploration and development, the technology equipment for offshore and deep-water oil and gas exploration and development, the technology for overseas oil and gas exploration and development, the new-generation petroleum engineering service technology and equipment, and digital transformation.

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Theoretical and Technological Progress and Development Prospect of China’s Natural Gas Exploration and Development in The 13th Five-year Plan Period Zhao Wenzhi, Jia Ailin, Wang Kun, Gao Yang, Wei Yunsheng, Huang Fuxi 2021, 40(3): 11-23.  DOI: 10.3969/j.issn.1002-302x.2021.03.002 Abstract ( )   PDF (6861KB) ( )   The 13th Five-year Plan is a remarkable five-year period for development and performance of natural gas exploration and development theory and technology in China. A series of the new exploration theories, such as the “Four Paleo” control theory of ancient marine carbonate rocks, the “Stacked Enriched Source + Structural Pumping Enrichment” natural gas accumulation principle for the foreland thrust belt, and the “Three Highs - One Protection - One Moderation” accumulation principle of shale gas, led to discovery and confirmation of three trillion-cubic-meter gas regions in the Anyue area of Sichuan Basin, the Kuqa area of Tarim Basin and the shale gas area in Southern Sichuan. The new achievements were continually made in tight sandstone gas reservoir development technology, carbonate rock gas reservoir development technology and deep-layer high-pressure gas reservoir and shale gas integrated development technology. Those technologies kept natural gas production growing continually and rapidly. China’s natural gas production reached 1925×108m3 in 2020, up 9.3 percent from the previous year. Natural gas, a relatively clean fossil energy, will see an important development stage in the pursuit of the “dual carbon” strategic objective. China’s natural gas reserves and production will be continually kept growing rapidly in the 14th Five-year Plan period and even a longer future.

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EOR Technological Innovation Keeps China’s Crude Oil Production Stable on Long-term Basis Yuan Shiyi, Wang Qiang, Li Junshi, Gao Ming, Han Haishui 2021, 40(3): 24-32.  DOI: 10.3969/j.issn.1002-302x.2021.03.003 Abstract ( )   PDF (3845KB) ( )   Enhanced oil recovery (EOR) technologies have become the top priority of sustainable and high-quality oilfield development in China. Driving by the national key special technological projects and relying on continuous independent innovation, China’s onshore oilfields have formed a series of EOR theories and technologies, such as fine water flooding, chemical flooding, heavy oil thermal recovery, gas flooding and microbial flooding, which are generally at the international leading level. They have been successfully applied in Daqing, Changqing, Shengli, Liaohe, Xinjiang and Dagang oilfields, and played an important role in ensuring the long-term stable production of national crude oil. This paper systematically summarizes the innovation-based achievements and breakthroughs in the area of EOR technology. Fine water flooding upgraded the water flooding technology of old oilfields, playing an important role in slowing down the production decline. The chemical flooding theory and technology were continually innovated in many aspects so that the technological level and application scale were on the forefront of the world. Particularly, the polymer flooding technology enhanced oil recovery of Class II oil layers about 14 percent in Daqing Oilfield, while, the data is more than 20 percent for ASP compound system flooding technology. Thermal recovery for heavy oil has developed rapidly from the steam huff and puff technology to the steam flooding, SAGD and fire flooding technologies. Gas injection technology has formed a relatively mature supporting technology, and the field has achieved good oil production effect, with the potential of producing 10 million tons in 5-10 years. Microbial flooding has made the breakthrough in the core technology, and the field EOR is more than 7 percent. In view of the new situation and requirements of low oil price, cost reduction and efficiency increase, energy conservation and environmental protection, China’s EOR technology needs to continuously strengthen the basic theoretical research, constantly upgrade the core technology, explore disruptive technology, and increase the strength of experiment and industrialization, so as to play a greater role in ensuring national oil security.

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Deep Carbonate Oil and Gas Development Technology Fuels China’s Petroleum Industrial Development Li Yang, Kang Zhijiang, Xue Zhaojie, Zhang Yun 2021, 40(3): 33-42.  DOI: 10.3969/j.issn.1002-302x.2021.03.004 Abstract ( )   PDF (3854KB) ( )   China is rich in carbonate oil resources of the fractured-vuggy type, with the proven oil geological reserves accumulated to 40.66×108t, thus becoming China’s important area for oil and gas exploration and development and increase of reserve and production. Thanks to the buried depth of more than 6500 meters, the description of the carbonate fractured-vuggy body is of low accuracy with diversification of the flowing patterns. It is difficult to make prediction by means of simulation. Water injection is easy to make the oil well flooded and ruined. The reservoir of this type is a world-class bottleneck. A series of the deep-layer carbonate oil and gas development technologies was innovated on the basis of the technological research and practice for nearly two decades. (1) The technologies for diffraction wave separation and reverse-time depth migration high-precision imaging, characterization of the internal structure of the fractured-vuggy body and faulted karst body prediction are created to form the karst geological modelling technology based on the geological databank and dynamic constraint. (2) The multi-scale composite media coupling numerical simulation theory is established to form the cavity-seam-pore variable coupling numerical simulation technology and parallel computing software. (3) The water-injection development theory of the fractured-vuggy oil reservoirs is developed to establish the space-structured well pattern design method and bring about recovery from cavities by injection into fractures, high recovery from low injection and recovery by injection into the same layers, obviously improving the reserve controlling degree of surface karst, underground-river karst and fault-controlling karst. (4) The nitrogen-injecting cavity top-driving mechanism is explained to form the technology to select the wells for single-well nitrogen injection and optimize the injection-production parameters. (5) The targeting acidizing and fracturing technology for any directions other than the main stress direction is establish to bring about renovation from one direction into multiple ones and from one fracture into multiple ones, thus improving the acidizing and fracturing target-hitting rate and the renovation performance. Based on application of the key development technology for deep carbonate fractured-vuggy reservoirs, the productivity rate of the new wells reached 91.7 percent in Tahe Oilfield, with the annual oil production kept stable at more than 550×104t. As a result, Shunbei Oil and Gas Field, a 1-billion-ton large-scale field, was found and rapidly put into production.

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Strategic Thinking and Suggestions on High-end Development of China’s Petroleum Engineering Technology and Equipment Sun Jinsheng, Liu Wei 2021, 40(3): 43-55.  DOI: 10.3969/j.issn.1002-302x.2021.03.005 Abstract ( )   PDF (5519KB) ( )   China has been launching technical research projects for its petroleum engineering technology and equipment for many years. Particularly since the national science and technology major projects are applied, the development and improvement of seismic exploration, cable logging, horizontal wells, underbalanced drilling, drilling speed, reservoir transformation, pressure operations, water injection, and oil recovery as the core of conventional petroleum engineering’s main technology and equipment to achieve full localization. Breakthroughs in high-end oil engineering technology and equipment widened the scope of oil and gas exploration and production, allowing for the cost-effective and efficient development of shale, compact, and deep-layer and deep-water oil and gas resources. Currently, the economic growth of oil and gas resources necessitates increased technological and equipment requirements in petroleum engineering. As a result, petroleum engineering companies should enhance their independent R&D capabilities as quickly as possible, overcome “bottlenecking” issues, and capitalize on the new dynamic energy from cross-disciplinary integration for technological growth. This article identifies topics for further scientific research so that China’s high-end petroleum engineering technology may quickly become the standard, and conventional and high-end technologies can be updated in turn. It is necessary to develop a number of high-end technologies and equipment by the end of the 16th Five-year Plan, such as intelligent geophysical exploration equipment, super high-temperature and super high-pressure deep detecting logging equipment, high-end automatic and intelligent drilling equipment, high-performance rotary steering system, high-effective intelligent rock-breaking tools, safe, environmentally-friendly and high-performance working liquid, drilling and completion technology for the ultra-deep wells with a 10000-meter depth, high power electric-driven intelligent fracturing equipment, fine intelligent layered injection and production technology, and offshore fracturing ship and multi-functional service ship. To attain a high degree of self-sufficiency and self-improvement in petroleum engineering technology, as well as to assure high-quality national energy security.

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National Science and Technology Major Project Supports CNOOC for Increase of Its Offshore Oil Reserves and Production Deng Yunhua, Xu Jianyong, Sun Lichun, Cao Jing, Xu Liangbin, Yu Xichong, Liu Lifang, Zhang Huilai, Zhu Yuejun, Liu Zhifeng 2021, 40(3): 56-71.  DOI: 10.3969/j.issn.1002-302x.2021.03.006 Abstract ( )   PDF (6315KB) ( )   The offshore oil industry is characterized by high technology, high investment and high risks. Therefore, it is necessary to continually innovate the theories and technology in offshore oil and gas exploration and development to bring about high-effective, safe and reasonable development and utilization of offshore oil and gas resources. Based on the national science and technology major project and combination of production, universities and research, CNOOC has made the joint research efforts and achieved fruitful results in theoretical innovation and technological upgrading and application in the areas of offshore oil and gas exploration, development, drilling, and engineering construction. It has established and perfected the theory on large-scale gas sourcing and accumulations of lacustrine source rock in China’s offshore deep layers, the offshore high-temperature and high-pressure natural gas accumulations theory, the accumulations theory of offshore Neogene lithological oil and gas reservoirs, and the geological theory on the formation mechanism of hydrocarbon-enriched depressions on the periphery of basin. CNOOC has also developed a system of high-effective seismic exploration technologies suitable for the unique offshore geological conditions, leading to discoveries of 26 large and middle-size oil and gas fields off China’s sea areas, such as Bozhong 19-6, Kenli 6-1 and Huizhou 26-6. A series of technologies have been developed and enriched to substantially improve production speed and productivity of offshore oilfields, such as the drilling technology for integrated water-flooding adjustment and high-efficiency development of offshore conventional heavy oil, the systematic technology for multiple huff and puff thermal production of non-conventional heavy oil, and the chemical flooding technology of offshore oilfields. CNOOC also overcame the offshore high-temperature and high-pressure drilling bottlenecks, thus putting Dongfang 13-2 into production, the largest offshore high-temperature and high-pressure gas field in China. It has developed the deepwater oil and gas development engineering technological system and the deepwater engineering experiment technological system with its own independent intellectual property rights and constructed the demonstrative project of Liuhua oilfield group. In addition, CNOOC has independently designed and built the world’s first deepwater semi-submarine platform with the storing function for condensate oil – Shenhai-1. With some typical cases, the achievements from national science and technology major project supported CNOOC for increase of its offshore reserves and production.

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Theory and Technology of Unconventional Oil and Gas Exploration and Development Helps China Increase Oil and Gas Reserves and Production Zou Caineng, Zhao Qun, Wang Hongyan, Sun Qian, Shao Nan, Hu Zhiming, Zhang Chenjun, Sun Yuping, Wang Meizhu, Liu Dexun 2021, 40(3): 72-79.  DOI: 10.3969/j.issn.1002-302x.2021.03.007 Abstract ( )   PDF (2495KB) ( )   China became the largest energy producing, consuming and importing nation in the world during the 13th Five-year Plan period. The country is now under the key stage for energy transformation – “clean coal, stable oil production and increase of gas production”. The unconventional oil and gas theory and technology as well as management innovation helps China bring about a rapid petroleum upstream development towards unconventional oil and gas from conventional oil and gas. China’s unconventional natural gas production reached about 732×108m3 in 2020, accounting for 38 percent of the country’s total natural gas output. Strategic breakthroughs in exploration evaluation of tight oil and shale oil were made in a number of basins, such as Ordos, Junggar and Songliao. The annual production was about 200×104t in 2020. It will be an important area to keep the domestic oil production stable and growing in the future. Unconventional oil and gas industrial development is different from conventional oil and gas in terms of development conception, technology and management model. During the 14th Five-year Plan period, the efforts will be concentrated to “put shale gas into a large-scale production”, typically development of marine-facies ancient shale in South Sichuan, “make large-scale and effective breakthroughs in shale oil”, typically shale oil development of middle to low maturity and middle to high maturity, and “achieve a strategic coal-to-gas breakthrough”, typically underground coal gasification, laying a solid foundation for China’s unconventional oil and gas development. Unconventional natural gas production is likely to exceed 50 percent of the total natural gas output by 2035 while unconventional oil production will surpass 20 percent of the total crude oil yield.

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Research and Practice of “National System” Innovation System Centering Enterprises Kuang Lichun, Zhong Taixian, Fu Guoyou, Zhao Mengjun, Qiu Zhichao 2021, 40(3): 80-86.  DOI: 10.3969/j.issn.1002-302x.2021.03.008 Abstract ( )   PDF (2591KB) ( )   Technological innovation is carried out in the national science and technology major projects under the socialist market-oriented economy. As an organizer of the major oil and gas projects, China National Petroleum Corporation (CNPC) established the organizational and executional model of the “national system” innovation system in its unremitting research efforts, which was guided by the national demand and focused on the enterprises. The model was based on an in-depth integration of industry, universities, research and application and a combination of scientific research projects with demonstration projects. It is also a multi-element investment model “led by the financial investment from the Central Government and concentrated on the fund raised by the enterprise itself”. The advantages of the new-type national system can effectively facilitate implementation of the national science and technology major projects and fulfill the general objectives as scheduled while improving the core competitiveness of the enterprises, promoting construction of the national innovation system, modernizing China’s independent innovation ability and providing the basis for organization and practice of the key technological innovation projects.

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Efforts for Innovation of Technological Support and Management Mechanism for National Science and Technology Major Project Zhao Mengjun, Zhao Limin, Guo Yanhua, Yu Hao, Ma Feng, Jiang Lin, Guo Yansong, Liu Zhong, Dong Hongkui 2021, 40(3): 87-93.  DOI: 10.3969/j.issn.1002-302x.2021.03.009 Abstract ( )   PDF (2626KB) ( )   The national science and technology major project of “Development of Large-scale Oil and Gas Fields and CBM” is one of the country’s 16 major projects. It is of vital importance to China’s oil and gas strategy of “concentrating more efforts on East China, promoting development in West China and accelerating offshore and overseas business”. The secretariate division for management of the major oil and gas project is the direct unit technologically supporting the specialized oil and gas projects. Focusing on the characteristics of the specialized projects, such as high-level positioning, difficult management in the execution process, wide technological scope, and low efficiency in transformation of the achievements, the secretariate division innovatively constructed the configuration of the “backbone + surrounding” technological support system and the “bar + block” combined operational mechanism. It also accumulated some helpful experiences in five areas for technological support of the national science and technology major projects. (1) The efforts were tried to establish the “new-type national system innovation system” and focus on the main position of the large-scale backbone enterprises for innovation. (2) Completion and transformation of the major achievements should be accelerated to bring about “organic combination of the projects with demonstrative engineering”. (3) It is necessary to ensure high quality, high level and incubation of achievements from the specialized projects and bring about an in-depth integration of industry, universities, research and application. (4) The projects should satisfy the country’s key demands and strategic objectives with the top-level design for the specialized projects and acquirement of the important benchmark results. (5) The project are led by the national financial investment and concentrated on the fund invested by the enterprises with the research fund used effectively and scientifically. This series of technological support and management methods, suitable for the characteristics of the major oil and gas projects, played an important role for organization and execution of the specialized projects and fulfillment of the general strategic objectives as scheduled.

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Innovation and Practice of Sinopec National Science and Technology Major Project Management He Zhiliang, Qi Yanping, Guan Xiaodong 2021, 40(3): 94-100.  DOI: 10.3969/j.issn.1002-302x.2021.03.010 Abstract ( )   PDF (2766KB) ( )   Based on the important oil and gas exploration and development technological research projects organized and carried out by Sinopec in the past more than decade, this paper analyzes the full-cycle management characteristics of national science and technology major projects. It also summarizes innovation and practice in the seven areas -- organization and management of the special projects, management of the system, process management of the key nodes, management of budget and finance, management of performance and examination, etc. The measures of national oil and gas major project management include putting the special management organs and managerial personnel in place, formulating the perfect specialized management system, carrying out and implementing with high efficiency, highlighting the key nodes, bringing the key tasks under management, coordinating integration of special projects management with service, carrying out the quality control system at three levels, implementing the dynamic and periodic submission system, stepping up integration management of technological research with the plans, finance, audit and contracts, paying the incentive fund on the basis of “methods, examinations, standards and differences” to bring the incentive role into full play, promoting in-depth integration of production, university and research, and realizing conversion and application of achievements. Sinopec has made a number of important benchmark technological achievements and found a set of action plans and innovative experience for management of the important and large-scale special projects.

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Innovation and Practice of CNOOC National Science and Technology Major Project Management System Zhou Jianliang, Lin Lin, Zhang Yuan, Ma Weiwei 2021, 40(3): 101-107.  DOI: 10.3969/j.issn.1002-302x.2021.03.011 Abstract ( )   PDF (4614KB) ( )   Based on the practice from management of the national science and technology major project for years, China National Offshore Oil Corporation (CNOOC) proposed that technological innovation should be guided by industrial developments with a close integration between the petroleum companies and the service companies. Technological management should be combined with finance management and procurement management to establish the high-efficiency management system. Scientific research fund should be led by the national fund and based mainly on the fund put aside by the enterprise. All the fund should be brought under unified and put into precise use. The national science and technology major project management system was established on the basis of those above-mentioned measures, which was “guided by industrial development, focused on technological innovation, and secured by the management system and investment of fund”. With the national science and technology major project carried out, CNOOC launched the precisely-targeted scientific research projects and created the high-level linear management model for technical products, the industrialized system and the scientific research support system so that it could substantially increase its reserves and production and made the progress in offshore oil industrial technology. The newly additional oil and gas proven geological reserves of CNOOC reached about 33×108t and 1.6×1012m3 respectively, thus helping the oil and gas fields construct the productivity of about 1.7×108t oil equivalent.Meanwhile, CNOOC developed more than 100 sets of products and equipment, generating 23 billion yuan in production value.

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Effect and Enlightenment from Management of Key Offshore Technology and Equipment Projects---Take Research and Manufacture of “HYSY 981” Platform for Example Zhou Shouwei, Zeng Hengyi, Lin Yaosheng, Xie Bin, Su Jing, Li Qingping, Xie Wenhui 2021, 40(3): 108-112.  DOI: 10.3969/j.issn.1002-302x.2021.03.012 Abstract ( )   PDF (2454KB) ( )   China is rich in deepwater oil and gas resources in the South China Sea. Development of those resources called for the ultra-deep semi-submersible drilling platform. Based on the national science and technology major project and the “863 Plan”, CNOOC used domestic research power, integrated and established the “industry, universities, research and application” integrated research teams. Quality control was tightened on R&D design and manufacturing process, CNOOC developed the new-typed ship of “HYSY 981” and the substantial safety-typed drilling equipment with the independent intellectual property rights. It established the technological system for design, manufacture and operation of China’s own deepwater semi-submersible drilling platform. The “HYSY 981” semi-submersible drilling platform adopted, for the first time, the assembled positioning system consisting of the DP3 dynamic positioning and anchor moored positioning. The variable load can reach 9000 tons, developed the world’s best ultra-high strength R5 graded anchor chain. The platform could resist the environmental load of 200 year return period in the South China Sea. It promotes the development of the related industries in the country. Currently, China is capable for independent exploration of the offshore oil and gas fields with a water depth of 3000 meters, laying a solid foundation for development of deepwater oil and gas fields.

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Independent R&D of CIFLog Logging Software and Its Development Orientation Li Ning, Wang Caizhi, Wu Hongliang, Wang Kewen 2021, 40(3): 113-117.  DOI: 10.3969/j.issn.1002-302x.2021.03.013 Abstract ( )   PDF (3406KB) ( )   PetroChina’s new generation of logging software – CIFLog – has experienced a rapid development since it was released in 2011. It was upgraded from processing and interpretation of a single well to a multiple of wells and horizontal wells. CIFLog has become the key instrument of the logging industry, with a high installed quantity, a large number of annually processed wells and the independent intellectual property right for all of its key technologies. As a scientific method and experiment equipment, this software used the quantitative calculation method of fractural saturation, which was baed on the constraints from both the downhole sealed coring saturation value and the best special solution of “resistivity index-saturation”. It effectively solved the world-class bottleneck for calculating the oil and gas saturation of fractured reservoirs and calculating the low porosity of tight reservoirs. As oil and gas exploration is unfolding into the deep-layer and unconventional fields, China’s logging science and technology aims at the goal of “development of one subject, construction of two main entities and manufacture of equipment in two families”.

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Joint Research Efforts by Industry, Universities and Research Institutes to Solve EOR Bottlenecks of Old Ultra-high Water-cut Oilfields Wang Fenglan, You Chunmei, Chen Baoyu 2021, 40(3): 118-123.  DOI: 10.3969/j.issn.1002-302x.2021.03.014 Abstract ( )   PDF (2852KB) ( )   Facing the development bottlenecks of old high and ultra-high water-cut oilfields, Daqing Oilfield launched a special key project focusing on further improvement of EOR technology for the oil reservoirs which were brought under development and in their ultra-high water-cut period. The oilfield established the “three-in-one” management system – an integration of research, experiment and application – to bring about orderly connection and high-efficiency integration of the R&D tasks. It created the research model that was based on high-end cooperation, introduction of systems, collaboration and sharing, and cross-disciplinary coordination within the enterprise. Based on the joint research efforts, Daqing Oilfield integrated and innovated the systematic technologies of waterflooding and water control for higher performance. Meanwhile, it also developed and perfected the systematic technologies to improve the quality and performance of polymer for the oil layers of the Class II. As a result, the new technology was developed to substantially improve EOR on the basis of ASP flooding and cost-effectiveness, enabling Daqing to become an international leader in this area. This technology helped Daqing Oilfield replace its backbone development technology, effectively keep its oil production stable at 4000×104t and implement its development strategy. The additional crude oil production was accumulated to 4900×104t in a duration of 13 years. The innovative results have been extensively used both at home and abroad, making Daqing a domestic leader in bringing the oilfields of the same king under high-efficiency development. The joint research model, which is an integration of industry, universities and research institutes, can be put into duplication and extension.

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Optimize Organizational Model of Technological Innovation; Fuel Development of Geophysical Equipment and Software Zhang Shaohua, Gou Liang, Hao Huimin, Song Qianggong, Song Jianjun, Zhu Guang, Yu Baoqiang 2021, 40(3): 124-128.  DOI: 10.3969/j.issn.1002-302x.2021.03.015 Abstract ( )   PDF (2637KB) ( )   Geophysical engineering technology is an important area in the national science and technology major project. BGP Inc. has an advantage of integration in its scientific and technological research projects. Led by the technological innovation strategy, it effectively coordinated organizational management, deregulated acquirement and application of joint technology and carried out the incentive mechanism on the basis of two wheels. Meanwhile, BGP Inc. continually optimized the organizational model of technological innovation, perfected the relative mechanisms, rapidly made important breakthroughs in the key and critical technologies, remarkably improved its independent innovation ability and successfully practiced the new-type national system for technological innovation. As a result, the broadband and high-precision controllable vibrator became an international leader, bringing about high-efficiency and green exploration. The million-channel seismic instrument led the industrial technological development and promoted transformation of seismic data acquirement model. The large-scale geophysical engineering software system ranked on the forefront of the global industry and became an example for technological independence. Innovation of technological management and execution of the specialized projects directly fueled transformation of geophysical prospecting equipment and software from “nothing” to “sophisticated”, substantially improving the oil and gas exploration and development service ability and international competitiveness, and effectively supporting China for fulfillment of its strategic objectives for both domestic and overseas oil and gas resources.

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“Industry, Universities, Research and Application” Integration Brings about Independent Development of Large-scale Fracturing Equipment Wang Junqiao, Wang Yunhai, Pan Lingyong, Zhang Bo 2021, 40(3): 129-133.  DOI: 10.3969/j.issn.1002-302x.2021.03.016 Abstract ( )   PDF (2806KB) ( )   Research and development of China’s fracturing equipment is committed to the engineering demands and based on the national science and technology major projects and integration of “industry, universities, research and application”. The enterprise is taken as the innovation backbone while the R&D team makes collaboration for innovation. The project management model is adopted to establish the target-oriented examination mechanism and make transformation of achievements on the basis of in-depth integration. As a result, the research efforts led to the fracturing pump technology with high reliability and long service life, the high-efficiency sand-mixing technology with a large displacement capacity, the super-high pressure manifold technology, and the high powered electric motor and frequency converting technology. Innovation also led to manufacture of the 5000-type electrically-powered fracturing assemblage, construction of the production line for electrically-powered fracturing units and the experiment platform, and establishment of the new service model. The systematic super-high powered electric fracturing units were put into large-scale application in the national major oil and gas engineering projects in Peiling, Weirong and Wulong, reducing the comprehensive cost by 30 percent. With the advantages of high power, high efficiency and low noise, the units ensured high-efficiency and cost-effective development of unconventional oil and gas in China.