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Review and Development Strategy of Irrigation with Unconventional Water Resources in China
HuYaqi, Wenyong Wu
Strategic Study of CAE 2018, Volume 20, Issue 5, Pages 69-76 doi: 10.15302/J-SSCAE-2018.05.011
With the increasing shortage of water resources, the development and utilization of unconventional water resources have received more and more attention from various countries. Using unconventional water resources to irrigate is one of the important measures to deal with the shortage of water resources. Unconventional water resources mainly include the reclaimed water and brackish water. In China, the agricultural unconventional water resources have relatively high potentials. It has been predicted that the amount of unconventional water available for agriculture will reach 3.438×1010 m3 in 2030 and the irrigation amount of reclaimed water and brackish water will be 1.645×1010 m3 and 2.48×109 m3, respectively. In areas where the fresh water resources are lacking and the unconventional water resources are relatively abundant, especially in the arid area in the north, developing and using unconventional water resources can be regarded as a good solution for the shortage of fresh water. In this paper, based on the situation of China, the irrigation mode of unconventional water resources was summarized. From the aspects of zoning technology, suitable crop classification, pollution identification technology, high-efficient irrigation technique, monitoring and evaluation technology, and integrated application mode, this paper proposes the safe irrigation measures of unconventional water resources in China. Finally, in order to establish a technical system of agricultural unconventional water resources utilization suitable for China, this paper puts forward the development and utilization strategy, which is to further strengthen the technical research and popularization of the agricultural unconventional water resource utilization technology, to improve the recycling standards and regulation system, to bring the unconventional water resources into the planning of water resources development and utilization, and to formulate incentive policies.
Technical Trend and R&D Focus of Modern Water-saving Agriculture
Wu Pute,Feng Hao,Niu Wenquan,Zhao Xining
Strategic Study of CAE 2007, Volume 9, Issue 2, Pages 12-18
Based on analyzing research achievements and technical trend of modern water-saving agriculture in China, combining technical development and demand on modern water-saving agriculture, the author suggested five of technical research emphases on modern water-saving agriculture in the future, including the biological water-saving technique,inferior water resources development technique, water-saving irrigation technique and equipment, dryland water high-efficient agriculture, and the regional development mode of water saving in field for water-saving agriculture.
Keywords： biological water-saving technique inferior water resources water-saving irrigation technique
Potential and development of unconventional hydrocarbon resources in China
Hu Wenrui,Zhai Guangming,Li Jingming
Strategic Study of CAE 2010, Volume 12, Issue 5, Pages 25-29
The situation of development and utilization of unconventional hydrocarbon resources in world and in China was summarized, difficulties in unconventional hydrocarbon resources development were analyzed and policies and proposals to speed up the development of unconventional hydrocarbon resources in China were proposed.
Keywords： unconventional hydrocarbon exploration and development technology potential countermeasure
Fu Qiang
Strategic Study of CAE 2002, Volume 4, Issue 6, Pages 44-55
The author applies covertly and macroscopically the SPAC theory model to the water saving system of well irrigation rice in Sanjiang Plain. Several sub-systems have been taken as a whole large system, such as groundwater, machine well, sunning water pool, channel, field, environment and so on. Through applying modern building models and optimization technique, the author analyzes the mechanism and theory of each subsystem, some mathematical models about groundwater, sunning water pool, channel, water production function, water requirement and available rainfall have been built. At last, through designing the typical demonstration area, the author combines several water-saving techniques into a whole system. Thus, the goal of raising water temperature 5～15℃ , saving water 17.1% and increasing yield 700 ～1 000 kg/hm2 canbe reached.
Keywords： building models optimization Sanjiang Plain well irrigation rice system
Water Use Features of Typical Crops and Technical Modes of Modern Agriculture Irrigation in China
Baozhong Zhang, Zhigong Peng, Bo Lei, Lijuan Du, Lei Wang, Yu Liu
Strategic Study of CAE 2018, Volume 20, Issue 5, Pages 77-83 doi: 10.15302/J-SSCAE-2018.05.012
A survey of field crop water use features, agricultural irrigation technical modes, and modern agriculture irrigation systems is of instrumental and practical value to improve agricultural water use efficiency and achieve sustainable utilization of agricultural water resources. This paper analyzes the irrigation schedules of typical crops, covering in particular the Huanghuaihai Plains (the Yellow River, the Huai River, and the Hai River) wheat belt, the Northeast rice belt, the rice belt in middle and lower reaches of the Yangtze River, the Sichuan Basin rice belt, the eastern Inner Mongolia pasture, the Guangxi sugar cane belt, and the Xinjiang cotton belt, all classified according to the Chinese comprehensive agriculture zonation, and arrives at some optimal technology modes. Meanwhile, the technical features of modern agricultural irrigation are summarized and a policy assurance system for it is proposed. The main conclusions are as follows: ① Applying optimized irrigation program to major crops in each comprehensive agricultural zone not only ensures water supply in the sensitive water shortage period, but also saves irrigation water, stabilizes yields, and improves water productivity; ② In view of the characteristics and restraints in each zone, advanced water-saving technology modes are recommended and promoted, which supports the precision implementation of the optimized irrigation program and improves the comprehensive production capacity of regional agriculture; ③ To match and support the modern agricultural production and management system, an IT-based modern irrigation technology and its corresponding financing mechanism and water rights management mechanism, among other policy assurance systems, are proposed.
Keywords： irrigation water requirement water use efficiency technical mode modern agriculture
Agricultural Water Resource in China and Strategic Measures for its Efficient Utilization
Hao Wang, Lin Wang, Guiyu Yang, Ling Jia, Yizhen Yao, Yutong Zhang
Strategic Study of CAE 2018, Volume 20, Issue 5, Pages 9-15 doi: 10.15302/J-SSCAE-2018.05.002
Since the 21st century, the cultivated area, irrigated area, and main grain-producing zone have been continuously concentrated to the North of China, and the North-to-South grains transportation has further aggravated the dislocation of land resources and water resources, which leads to the increase of agricultural water resources stress, and the unsustainability of underground water in the main grain-producing zone to the north of the Yellow River. To ensure national food security and provide rational basic guarantees for agricultural water resources, based on the analysis of the agricultural water resources situation, the grain production and consumption, the spatial distribution characteristics of food crop irrigation water requirements, and the precipitation adapting cropping areas in China, the paper employed the irrigation quote method to calculate the minimum thresholds of farmland irrigation water requirements in 2025 and 2030 under the condition of the irrigation method adjusted and rational irrigation scale constrained by the grain consumption demand and the total water use control red line in future. The results show that, to meet the water demand for high-standard farmlands of 66.67×106 hectares in the future, a bottom line of 3.23×1011 m3 water for farmland irrigation should be guaranteed while strengthening water-saving conditions, and approximately 6.44×109 m3 unconventional water should be exploited to supplement fresh water shortage. Strategic measures of establishing water-saving and high-efficiency modern irrigation farming and water-collecting and efficiency-improved dry farming systems are proposed. To this end, the following measures should be stressed: precipitation adapting cropping should be promoted to improve rainwater utilization efficiency, engineering and agronomic measures should be taken to increase the utilization efficiency of irrigation water, utilization of unconventional water resources should be increased, and water resource management should be enhanced.
Keywords： agricultural water resources threshold value of irrigation water modern dry farming modern irrigation farming precipitation adapting cropping strategic measures
Guoxin Li,Chenggang Xian,He Liu
Engineering 2022, Volume 18, Issue 11, Pages 105-115 doi: 10.1016/j.eng.2022.05.018
Unconventional oil and gas resources have become the most important and realistic field for increasing China's domestic oil and gas reserves and production. At present, the production scale does not match the massive amount of resources and the rapid growth of proven geological reserves. The challenges of technology, cost, management, and methodology restrict large-scale and economic development. Based on successful practices, a "one engine with six gears" system engineering methodology is put forward, which includes life-cycle management, overall synergy, interdisciplinary cross-service integration, marketoriented operation, socialized support, digitalized management, and low-carbon and green development. The methodology has been proved to be effective in multiple unconventional oil and gas national demonstration areas, including the Jimusar continental shale oil demonstration area. Disruptive views are introduced—
namely, that unconventional oil and gas do not necessarily yield a low return, nor do they necessarily have a low recovery factor. A determination to achieve economic benefit must be a pervasive underlying goal for managers and experts. Return and recovery factors, as primary focuses, must be adhered to during China’s development of unconventional oil and gas. The required methodology transformation
includes a revolution in management systems to significantly decrease cost and increase production, resulting in technological innovation.
Keywords： Unconventional oil and gas resources System engineering Methodology transformation Life-cycle management Geoscience-to-engineering integration
Chen Shouyu
Strategic Study of CAE 2001, Volume 3, Issue 2, Pages 33-38
Based on analysis of the relationship between sustainable development and bearing capacity of regional water resources, this paper presents a fuzzy pattern recognition model and a method for qualitative assessment of sustainable development of regional water resources, which are applied to assess the sustainable development of water resources of Hanzhong Basin. The case study proves that the model and method are reliable and that results are reasonable and practicable. They can also be applied to the assessment of the sustainable development of social economies.
Keywords： water resources sustainable development assessment pattern recognition fuzzy
Review on the marine radioactive-pollution monitoring and assessment technology
Chen Liqi,He Jianhua1,Lin Wuhui,YuWen, MenWu
Strategic Study of CAE 2011, Volume 13, Issue 10, Pages 34-39
To review the marine radioactive-pollution monitoring and assessment technology, the sources and components of marine radioactivity were introduced; the development on the methods of marine radioactivity analysis and the technology of monitoring network were appreciated, and the possibility and importance on building the methodologies of non-human species radiation protection and assessment were discussed, including the assessment of marine radioactive-pollution. Some advice for developing marine radio-monitoring technology in China was proposed at last.
Keywords： radioactive-pollution monitoring technology and network assessment ocean
Integrated investigation and industrial application of sour nature gas treatment technology
Sun Lili
Strategic Study of CAE 2010, Volume 12, Issue 10, Pages 76-81
Aiming at acute characteristics of flammability, explosibility, causticity, and leakiness of high sour natural gas, giving full consideration to local natural conditions in Sichuan Province and starting with purification process, the paper analyzed process configurations, energy utilization and conservation, safety and environment protection measures. The integrated technology and engineering scheme for high sour natural gas purification was established and successfully used in industrial application.
Keywords： high sour natural gas purification safety and environment protection measure technology integration industrial application
Water Saving Irrigation for Rice and Its Effect on Environment
Mao Zhi
Strategic Study of CAE 2002, Volume 4, Issue 7, Pages 8-16
Rice is one of the most important food crops contributing about 40% of the total food grain production in China. Out of about 110 million hectares of area sown food crops, 28% is covered by rice. Since 1980s, the shortage of water resources has become an important problem for agricultural production in rice planing areas and many water saving regimes for rice have been tested, advanced, applied and spread in different regions of China. In this paper, based on the results of experiment and the experience of spread of these new irrigation regimes, the following four main kinds of water saving irrigation regimes in China have been classified viz. (1) combining shallow water depth with “wetting” and “dry” (SWD), (2) alternate wetting and drying (AWD) ,(3) semi-dry cultivation (SDC) and (4) rainwater storage (RS). The standards of field water control and potential of saving water, increasing rice yield and water productivity of these regimes are introduced and explained. The selection and attention points of application for the four regimes are presented and the causes of sustainable saving water and increase in water productivity and the environmental impacts by adopting these regimes are analyzed and discussed.
Keywords： rice water saving irrigation irrigation regime potential of water-saving enviromental impact
Prospects and Strategic Position on Unconventional Natural Gas Development & Utilization in China
The Project Team of “China Unconventional Natural Gas Development & Utilization Strategic Research
Strategic Study of CAE 2015, Volume 17, Issue 9, Pages 6-10
The unconventional natural gas resources is abundant in China but with low degree of development and utilization. Moreover, there is advanced technology and experiences from outside China can be learned. It is of great strategic significance to accelerate the development and utilization of unconventional natural gas resources for economic and social development as well as the energy security. Based on the evaluation of the potential and exploitation trends of four types of unconventional natural gas resources, some strategies and measures were recommended in this paper. The studies suggested that the grand total technically recoverable resources of shale gas, tight gas and coal-bed methane in China is approximately 3.1×1013 m3, which is 1.5 times that of conventional natural gas resources. Both technological innovation and policy support from the government are the key to achieve the large-scale development and utilization of unconventional natural gas resources. A three-step strategy can be applied in the development and utilization of unconventional natural gas in China. The output of unconventional natural gas is predicted to draw equal with that of the conventional natural gas around 2020; it is expected to reach approximately 3×1011 m3 around 2030, accounting for 2/3 of the national total. It will be the main contributor for the sustainable and sound development of China’s natural gas industry.
Keywords： unconventional natural gas resource potential development and utilization strategic position
The potential and exploring progress of unconventional hydrocarbon resources in SINOPEC
Ma Yongsheng,Feng Jianhui,Mu Zehui,Zhao Peirong,Bao Shujing,Wang Feng
Strategic Study of CAE 2012, Volume 14, Issue 6, Pages 22-30
The unconventional hydrocarbon resources are very abundant within the registered blocks of SINOPEC (China Petroleum & Chemical Corporation). The potential exploration area for coalbed methane (CBM) reaches 101.9 thousand km2 and the resource with the buried depth smaller than 2 000 m is 11.02 trillion m3. The potential exploration area for shell gas is 175 thousand km2 and the volume is 15.9 trillion m3. The potential exploration area for shell oil reaches 117.6 thousand km2 and the resource is huge. Since 2004, SINOPEC has started to pay attention to unconventional hydrocarbon resources and launched research and exploration on CBM, shale gas and shale oil, etc. Recently, unconventional hydrocarbon resources exploration of SINOPEC has obtained breakthrough and progress. By the horizontal well fracturing section, Biye HF-1 obtains 23.6 m3/d commercial shell oil flow in Biyang Depression. By testing, several continental wells get high-yield commercial shell gas flow in Yuanba Block, and Jianye HF-1 obtains 12 300 m3/d commercial shell gas flow in Jiannan Block. The CBM proved reservoir in Yanchuan south block has reached 10 647 millon m3, and lots of wells get commercial CBM gas flow, which makes the pattern of “various resources type” and “multi-stage” exploration and development form on unconventional hydrocarbon resources in SINOPEC.
Keywords： SINOPEC (China Petroleum & Chemical Corporation ) unconventional hydrocarbon hydrocarbon resources exploration
Guancheng Jiang,Jinsheng Sun,Yinbo He,Kaixiao Cui,Tengfei Dong,Lili Yang,Xukun Yang,Xingxing Wang
Engineering 2022, Volume 18, Issue 11, Pages 129-142 doi: 10.1016/j.eng.2021.11.014
The efficient exploration and development of unconventional oil and gas are critical for increasing the self-sufficiency of oil and gas supplies in China. However, such operations continue to face serious problems (e.g., borehole collapse, loss, and high friction), and associated formation damage can severely impact well completion rates, increase costs, and reduce efficiencies. Water-based drilling fluids possess certain advantages over oil-based drilling fluids (OBDFs) and may offer lasting solutions to resolve the aforementioned issues. However, a significant breakthrough with this material has not yet been made, and major technical problems continue to hinder the economic and large-scale development of unconventional oil and gas. Here, the international frontier external method, which only improves drilling fluid inhibition and lubricity, is expanded into an internal–external technique that improves the overall wellbore quality during drilling. Bionic technologies are introduced into the chemical material synthesis process to imitate the activity of life. A novel drilling and completion fluid technique was developed to improve wellbore quality during drilling and safeguard formation integrity. Macroscopic and microscopic analyses indicated that in terms of wellbore stability, lubricity, and formation protection, this approach could outperform methods that use typical OBDFs. The proposed method also achieves a classification upgrade from environmentally protective drilling fluid to an ecologically friendly drilling fluid. The developed technology was verified in more than 1000 unconventional oil and gas wells in China, and the results indicate significant alleviation of the formation damage attributed to borehole collapse, loss, and high friction. It has been recognized as an effective core technology for exploiting unconventional oil and gas resources. This study introduces a novel research direction for formation protection technology and demonstrates that observations and learning from the natural world can provide an inexhaustible source of ideas and inspire the creation of original materials, technologies, and theories for petroleum engineering.
Keywords： Formation protection Wellbore quality Unconventional oil and gas Drilling and completion fluid Bionics
Zhang Kaisong,Zhou Qixing,Sun Tieyan
Strategic Study of CAE 2003, Volume 5, Issue 2, Pages 88-92
Harmless and resourceful techniques for sewage treatment that are applicable to the implementation in small cities and towns and their development were summarized in order to provide reference for solving the deficiency of water resources and aquatic environment deterioration in China. It emphasizes that the resourceful reuse of wastewater after a harmless treatment with adjusting wastewater treatment measures to local conditions is the direction of waste treatment in small cities and towns in the country. The foreground of the harmless and resourceful techniques to be applied to small cities and towns was analyzed and discussed.
Keywords： small city and town sewage resources harmlessness resourcefulness wastewater treatment technology
Title Author Date Type Operation
Review and Development Strategy of Irrigation with Unconventional Water Resources in China
HuYaqi, Wenyong Wu
Journal Article
Technical Trend and R&D Focus of Modern Water-saving Agriculture
Wu Pute,Feng Hao,Niu Wenquan,Zhao Xining
Journal Article
Potential and development of unconventional hydrocarbon resources in China
Hu Wenrui,Zhai Guangming,Li Jingming
Journal Article
Study on the Modern Building Models & Optimum Technique——Application of Water Saving System for Well Irrigation Rice in Sanjiang Plain
Fu Qiang
Journal Article
Water Use Features of Typical Crops and Technical Modes of Modern Agriculture Irrigation in China
Baozhong Zhang, Zhigong Peng, Bo Lei, Lijuan Du, Lei Wang, Yu Liu
Journal Article
Agricultural Water Resource in China and Strategic Measures for its Efficient Utilization
Hao Wang, Lin Wang, Guiyu Yang, Ling Jia, Yizhen Yao, Yutong Zhang
Journal Article
A “One Engine with Six Gears” System Engineering Methodology for the Economic Development of Unconventional Oil and Gas in China
Guoxin Li,Chenggang Xian,He Liu
Journal Article
Theory Model and a Method for Qualitative Assessment of Sustainable Development of Regional Water Resources
Chen Shouyu
Journal Article
Review on the marine radioactive-pollution monitoring and assessment technology
Chen Liqi,He Jianhua1,Lin Wuhui,YuWen, MenWu
Journal Article
Integrated investigation and industrial application of sour nature gas treatment technology
Sun Lili
Journal Article
Prospects and Strategic Position on Unconventional Natural Gas Development & Utilization in China
The Project Team of “China Unconventional Natural Gas Development & Utilization Strategic Research
Journal Article
The potential and exploring progress of unconventional hydrocarbon resources in SINOPEC
Ma Yongsheng,Feng Jianhui,Mu Zehui,Zhao Peirong,Bao Shujing,Wang Feng
Journal Article
Novel Water-Based Drilling and Completion Fluid Technology to Improve Wellbore Quality During Drilling and Protect Unconventional reservoirs
Guancheng Jiang,Jinsheng Sun,Yinbo He,Kaixiao Cui,Tengfei Dong,Lili Yang,Xukun Yang,Xingxing Wang
Journal Article
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