Current Issue      29 February 2024, Volume 43 Issue 1 Previous Issue   
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World Energy Transformation and China's Modern Energy Revolution under Carbon Neutrality Background
Zou Caineng, Xiong Bo, Li Shixiang, Ma Feng, Pan Songqi, Liu Hanlin, Zhang Guosheng, Zhao Qun, Guan Chunxiao
2024, 43(1): 1-17. Abstract ( )   PDF (3196KB) ( )  
Under the background of global consensus on carbon neutrality and more intensified regional conflicts, new energy has become the main direction for various countries to implement energy security and low-carbon development goals. New energy technology with the advantages for its large-scale application is increasingly consolidated, typically wind energy, solar energy,geothermal energy, energy storage and controllable nuclear fusion etc. The cost-effective wind energy, solar energy and energy storage will support global energy transformation while new energy production and application enters rapid development era. The proportion for the world’s new energy consumption was 18.2 percent on average in 2022. This figure is estimated to reach about 55 percent in 2050. Global energy is unevenly distributed in resources, consumption, technological development, per-capita consumption, energy conservation and carbon emission. Global energy transformation is accelerated in three areas-decarbonization of fossil energy, largescale application of new energy and intelligence of energy management. China’s modernization emphasized harmony and coexistence between the humanity and nature, active and steady implementing of carbon peak and carbon neutrality and energetic acceleration of energy revolution. China has adhered to the six principles, namely independence in energy production, greenness of energy supply,security of energy reserves, high-efficiency in energy consumption, intelligence of energy management, and economy of energy cost.To ensure energy security, China accelerated construction of a green and intelligent new energy system which is focused on new energy, new electric power, new energy storage and new intelligent energy. Currently, China is a large energy country but not an energy power yet. It is necessary to further optimize nation’s energy consumption mix. China has adopted a new strategy featuring Four Reforms and One Cooperation, refer to improve the consumption revolution, build a more diversified energy supply structure,improve energy technological technologies and optimize energy system, as well as pursue comprehensive cooperation with other countries, aiming to promote China’s energy revolution and transformation of the energy supply pattern. Turn the carbon fossil energy consumption proportion of more than 80 percent in 2022, to non-carbon new energy consumption accounting for more than 80 percent by 2060. Meanwhile, the CO2 emission from carbon-based energy exceeded 80 percent in 2022 and projected reduced by more than 80 percent by 2060. Acceleration of new energy revolution is a strategic option to build China into an energy power and bring about the strategy for China’s energy independence and national rejuvenation. It is of great significance to construction of the new green energy system and the green ecological earth.
Thinking and Suggestions on Integrated Development Pathways for Oil and Gas with New Energy
Su Chunmei, Zhu Jingyi, Ma Jianguo, Xu Yuan, Zhao Yunpeng
2024, 43(1): 18-24. Abstract ( )   PDF (2658KB) ( )  
Under the “dual carbon” goal background, the oil and gas field enterprises should accelerate integrated development between oil and gas business and new energy business. The implementation pathways should be based on integrated energy development and application including oil, gas, heat, electricity and hydrogen as well as structural transformation and upgrading of energy supplies. The cost-effective and green electricity should be used to keep the growth in oil and gas supplies while energetic efforts are made to use geothermal energy for clean heating and alleviate the pressure in natural gas supplies in winter. It is necessary to develop photovoltaic and wind power on a large scale and promote green hydrogen industrial development in the areas of abundant wind and solar resources. Meanwhile, more efforts should be focused on clean energy consumed for production, accelerating clean and low-carbon development of oil and gas energy. The concrete measures include optimization and simplification of the oil and gas production system for saving energy and higher efficiency, use of clean electric power to replace grid power with green power for higher proportion of green power, use of clean thermal energy to establish the low-carbon and electrified technical process for utilization of heat energy, residual heat and low-temperature air hear to replace self-consumed natural gas, and re-creation of the production system to establish the low-carbon oil and gas production system in coupling with the characteristics of clean energy. The suggestions are put forward in the four areas to secure integrated development of oil and gas with new energy. First of all, the oil and gas productivity should be planned and constructed in steps with new energy to bring about “integrated construction”. Secondly, more efforts are concentrated on saving energy, higher efficiency and consumption and absorption of new energy to bring about “integrated production”. Thirdly, integration is made for construction, operation and evaluation to bring about “integrated management”.Fourthly, more efforts are focused on improvement of production technological chnological innovation to bring about“ integration of technology”.
Study of CNPC's New Energy Development Pathway and Innovation Practice
Kong Lingfeng, Yue Xiaowen
2024, 43(1): 25-30. Abstract ( )   PDF (2575KB) ( )  
Development of new energy is an important measure for realization of the “dual carbon” goals and fulfillment of the promise to make response to climatic changes. China has formulated a series of “1+N” dual carbon policies as well as the energyrelated development plans and policies, requiring the oil and gas enterprises to secure oil and gas supplies in harmony with green and low-carbon development. With the green and low-carbon conceptions included in its corporate development strategy, CNPC has the advantages of resources, market, technology and consumption scenario and the conditions for accelerating integrated development of oil and gas with new energy on the basis of its oil and gas industrial chain. As for the development pathway, CNPC will promote highquality and large-scale energy development in its efforts to solve the low-carbon production problems by using clean substitutes,develop new energy on a large scale to improve its capability of integrated energy supply, and fulfill the “dual carbon” goals by accelerating CCS/CCUS industrialized development. In the practice for recent years, CNPC has created the new models of synergizing the upstream sector with the downstream sector for low-carbon development, making transitional development of the old oilfields and establishing the low-carbon zones in the oil areas.
Problems Concerning Effective Development and Utilization of Geothermal Resources by Petroleum Enterprises and Related Suggestions
Shi Yizuo, Sha Qiu, Zhang Xunhua, Liu Renhe, Cao Qian, Zheng Yuanchao, Xiao Hongping
2024, 43(1): 31-39. Abstract ( )   PDF (3741KB) ( )  
Geothermal industry faces an important development opportunity under the global trend for carbon emission reduction and energy structural transition. Petroleum enterprises have unique advantages in exploitation and utilization of geothermal resources on account of the similarities of these two industries. The oil giants of China, CNPC and SINOPEC have made significant progress in geothermal projects in recent years. However, they still face a series of challenges, of which the resource conditions and the selection of the exploitation and utilization strategies are the key issues restricting the effectiveness of the projects. Based on the formation and distribution mechanisms of geothermal resources, we point out that the geothermal resources suitable for effective development are conditionally accumulated. To improve the success rate and the effectiveness of the projects, it is necessary to locate the high-quality resources and eliminate the blindness in selecting the development targets on the basis of the genetic mechanism of the geothermal system. Subsequently, the appropriate exploration and development model and utilization method should be proposed according to the regional conditions in the light of the different resource types and structural settings, as well as the enrichment conditions and other facts. Only those efforts can lead to the effective scale-up and beneficial development of geothermal industry. For instances, to expand the geothermal utilization scenarios, the Bohai Bay Basin is still to be identified for the heat-controlling characteristics of deep faults and other structural elements in order to acquire the resource adequate for sustainable power generation. Besides the complicated and emerging heat recovery methods, such as down-hole heat exchanger and reservoir stimulation, Songliao Basin and Sichuan Basin are suggested to bring the active structural zones on the peripheries of the basins under the exploration and development of geothermal resources or target the intrabasinal water-conducted fault zones. Meanwhile, the technical pathways of enhanced geothermal system and down-hole heat exchanger still need to be further evaluated and optimized to analyze their applicable conditions.
Development and Prospect of Renewable Energy Hydrogen Production Technology in Oil and Gas Industry
Yu Huidi, Zhang Lin, Zhao Yongming, Li Yiheng, Zhang Xi, Liu Xiaodan, Zhang Chenjun, Wang Xiaoqi
2024, 43(1): 40-49. Abstract ( )   PDF (16908KB) ( )  
Use of renewable energy for hydrogen production is an important way for oil and gas enterprises to promote energy structural optimization and upgrading as well as in-depth decarbonization. Based on research and demonstrative application of the industrial chain technology, the oil and gas enterprises have actively accelerated high-efficiency development of hydrogen productivity on a large scale in recent years. This article makes comparison of the technological advantages and challenges in the areas of ALK, PEM and SOEC hydrogen production. It also analyzes the distribution plans made by the typical Chinese and foreign oil and gas companies for hydrogen production industry and projects. Focusing on the green hydrogen industrial chain and technological chain, CNPC has consistently studied the renewable energy hydrogen production technology and related system suitable for the company’s own characteristic application scenarios. The efforts covered basic research and demonstrative projects. It has achieved a series of innovative results in high-efficiency electrocatalyst materials, electrolyzer system optimization, hydrogen electric coupling system, large-scale and large-quantity hydrogen production facility, SOEC hydrogen production technology and solar energy photolysis water hydrogen production technology. Combined with the hydrogen production technology of the China’s oil and gas enterprises, this article comes up with the suggestions and outlooks of the renewable energy hydrogen production industrial development in the future.
Technological Pathway and Solution for Oilfield Solar-thermal Application
Lv Lili, Xu Yuan, Fu Yong, Hou Bowen, Cheng Tingting, Liu Hongbin
2024, 43(1): 50-58. Abstract ( )   PDF (3013KB) ( )  
Under global climatic crisis and China’s “carbon peak and carbon neutrality” goals, the oilfield enterprises accelerated development towards green transformation to promote low-carbon oil and gas production. Fossil fuels accounted for more than 70 percent of energy consumed for oilfield oil and gas production. Solar-thermal application was the main direction in clean thermal power at oilfields. This paper compares the various characteristics of active solar thermal collection technology in the solar thermal industrialized application field and analyzes the temperature demands for the various oilfield thermal application environments,concluding that the diversity of solar-thermal technology is highly matched with the diversity of oilfield thermal energy application demands. Elaborating the various environments for oilfield thermal energy consumption, the paper also analyzes multi-element technological pathways, such as single-well oil extracting cogeneration, high-efficiency solar-thermal replacement on a small scale, interconnection and sharing of a large-scale solar-thermal system, and solar-thermal gradient application under the complicated thermal energy consuming environment. Focusing on the bottlenecks for solar-thermal application at oilfields, it comes up with the application pathways in such areas as selection of projects, determination of scales, design of system, optimization of synergy and energy regulation. As for formulation of the oilfield solar-thermal application plan, determination of the order for gradual clean replacement according to the local conditions holds the key to improving performance of replacement. Systematic mindset based on both upstream and downstream businesses and optimization of operational strategy are the preconditions for optimization of the design scheme. Rigorous comparability and estimation of the service life period are the basis for selection from a number of plans.The study and practice of the various thermal consuming environments are the important pathways for improving the quality of plans.It is proposed that oilfield enterprises should gradually improve their understanding in the practice, sustainably optimize the thermal energy application plans, accelerate execution of the plans and further promote oil and gas development in harmony with new energy.
Research and Application of Accounting Method for Reduction of Carbon Emission Based on Carbon Asset Development from CCUS Demonstration Project
Liu Hongbin, Meng Lan, You Yuanpeng, Wang Yuan, Yao Jian, Lian Junbao
2024, 43(1): 59-65. Abstract ( )   PDF (2836KB) ( )  
CCUS/CCS is a common strategic option made by the global oil and gas industry for green and low-carbon transitional development. Evaluation on accounting reduction of carbon emission is of important reference to construction and making decisions on the CCUS projects. Based on the requirements of “Method for accounting greenhouse gases emission and report guide for China’s oil and natural gas production enterprises (trial)”, this article analyzes the present conditions of a certain CCUS demonstration block.Focusing on the various stages of the CCUS project-CO2 capture, piped transmission, oil flooding and burial-as well as determination of the accounting boundaries and identification of emission sources, the article also puts forward the monitoring plan, calculation formula and accounting method for CO2 emission. Based on energy consumption, carbon emission from the process and monitoring of leaking spots in operation of the project and calculation of emission reduction according to the data from the engineering feasibility study and under the condition that venting and dissipation of CO2 are not taken into account, reduction of CO2 emission is estimated at 60.2×104 tons in the first year after the CCUS demonstration project is put into production, thus providing data support for CCUS carbon asset development.
Analysis of Key Design Points to Improve Economic Performance of PV Power Generation
Guo Yongqiang, Sun Qiang, Liu Huijun
2024, 43(1): 66-70. Abstract ( )   PDF (2901KB) ( )  
China’s photovoltaic industry has experienced a rapid development in recent years. Under the requirements on connecting new energy power into the grid at fair price, how to improve economic performance of photovoltaic power generation has drawn attention from the industrial community. Economic performance of photovoltaic power generation is influenced by a series of factors,such as initial investment, power generation and operational and maintaining costs. This article takes into account the principles and methods for levelized cost of electricity (LCOE) of PV power stations and analyzes the factors affecting the power generation of PV power stations. To maximize economic performance of PV power stations, the article points out that it is necessary to make a comparative study of the key designing points in the light of the project characteristics, such as selection of the key equipment like PV components and inverters and setup of the capacity ratio, thus acquiring the best design plan. Taking a certain 100 MW mountainous PV power project for instance, the results from analysis and comparation shows that the conversion efficiency and economic performance of the N-type PV components are better than those of the P-type while LCOE of string inverter is better than that of centralized inverter. LCOE of PV power stations sees the trend for first declining and then rising with a higher capacity ratio.
Technical Solution for Adaptive Modification of Oilfield Power Grid under New Energy Access
Chi Lixun, Huang Yan, Hao Yingpeng, Liang Yan
2024, 43(1): 71-77. Abstract ( )   PDF (3336KB) ( )  
Under the carbon peaking and carbon neutrality goals, CNPC is implementing a large layout of “wind, solar, hydro and storage integration”base in Three North Regions, promoting the integrated development of natural gas and renewables. The transformation of oilfield power grids faced a series of bottlenecks and challenges. As electricity generated by renewables gradually accesses to the internal power grid of oilfields, the difficulty of power system balance increases. Issues such as grid voltage stability and frequency stability are affected, and existing oilfield power grids struggle to ensure the safe, reliable, and economically efficient operation of the system. The article explored the grid scheduling automation system, the power intelligent control platform, and the adaptive simulation analysis of new energy integration for the Q oilfield. Through the improvement of the power scheduling automation system, functions such as power system state estimation and market transaction are achieved. The substitution of clean energy in the BW region was analyze by the application of intelligent electric power control platform. The results showed that 2.96 million yuan in electricity costs annually and 500 tons CO2 emissions reduction can be saved. The results of the adaptive simulation analysis of new energy integration indicated that when the proportion of new energy is less than 75%, the system power grid can be stabilized after oscillation. The connection point of gas turbines to the grid should be close to the central bus to prevent low system voltage and oscillation caused by long transmission lines.
Research on CCUS Source-Sink Matching and Distribution Based on Accounting Carbon Emission Reduction
Wang Fang, Ma Jianguo, Li Mingzhuo, Gao Ming, Zhang Fa
2024, 43(1): 78-85. Abstract ( )   PDF (4321KB) ( )  
This article focuses on energy consumed by CO2 capture from different sources, power consumed by CO2 compression and transportation in different landforms and over different distances, and energy consumption and leakage of the different CO2-flooding development stages. Using energy consumed and leaked by the CCUS projects and fugitive emission as the constraint conditions and net reduction of emission in the whole process of the project as the highest target of optimization, the CCUS source-sink matching method is formulated, which is in line with the dynamic reservoir development law and under the constraints of accounting carbon emission reduction. This method can serve as the decision-making basis for industrial distribution of CCUS technology and execution of the projects under the “dual carbon” goal. Take CNPC's CCUS industrial planning in Ordos Basin for example, this article comprehensively elaborates some constraining factors, such as operation of the existing coal-fired power and coal chemical carbon sources and the service life if the facilities, prediction of energy consumed by CO2 capture, gas volume injected and cycled for CO2 flooding, and planning of the coal-based industrial distribution in the basin. Source-sink matching optimization and distribution of the CCUS project in Ordos Basin will be completed in five stages, namely 2025, 2030, 2040, 2050 and 2060. The matched CCUS/CCS project group will cumulatively inject about 3.96×108 tons of CO2 (including 0.48×108 tons of recycled gas) in the duration from 2025 to 2060. The net reduction of CO2 emission can reach 2.54×108 tons, about a 72.9 percent net reduction efficiency, after deduction of energy consumed and leaked by all kinds of the technical process.
Suggestions and Thinking on CNPC New Energy Business Intelligent Application Platform
Sun Qiang, Shi Bingbo, Zhang Yanju, Zhao Jiaoyan, Zhang Jiankang, Jiang Liwei
2024, 43(1): 86-93. Abstract ( )   PDF (4846KB) ( )  
Under the“carbon peak and carbon neutrality” background, CNPC has tried hard to create the intelligent platform covering all production elements of new energy business with the production links inter-connected and communicated to promote high-quality development of new energy business. The platform takes into account a series of challenges, such as rapid changes in corporate business demand, difficult quality control over a magnitude of multi-dimensional heterogeneous and multi-source isomerism data, and data security and protection. The platform configuration is based on the distributed system and cloud computing technology. With integration of various data sources and by means of the data-tapping and analysis technology, the platform provides the simple, standardized, sharing and high-efficiency data visualized service and has the functions of production operation, concentrated adjustment and control, production business, integrated analytic application, and big-screen application. The platform also functions for construction of databank, tapping and analysis of artificial intelligent data, and big-screen and intelligent display of big data. The intelligent platform for new energy business can standardize the data, connect the data transmission paths, and follow up construction progress of the project, thus providing powerful support for control over nodes, improvement of management efficiency, enhancement of production analysis and construction of productivity with economic results.
Present Conditions and Thinking of Chinese and Foreign Lithium Industrial Development
Cao Qian, Sha Qiu, Liu Renhe, Zheng Yuanchao, Xiao Hongping, Shi Yizuo
2024, 43(1): 94-102. Abstract ( )   PDF (3493KB) ( )  
Lithium finds wide application in nuclear fusion, power batteries and energy-storing equipment. It is the key metal for new energy and strategic emerging industries. To Understand the current conditions and trends for development and utilization of lithium resources is helpful to improve the competitiveness of the nation and enterprises in the lithium industrial area. Global lithium resources available for development and utilization is abundant but distributed unevenly. Rapid new energy industrial development stimulates lithium consumption growth and emerging lithium extraction technological progress. The deep-layer brine, such as geothermal brine and oil and gas field brine, and waste lithium batteries are likely to become the “new-type mineral resource”. China is one of the main countries for middle-stream processing of lithium resource. The nation has been highly dependent on foreign raw materials for a long period of time. As foreign countries tighten control over lithium resource, China is predicted to be short of the raw material in the future. Based on the analysis of resource, market and industrial development trend, this article suggests to step up prospecting of resource and encourage oil and gas companies for “exploration of oil and lithium at the same time”. The preferential policies should be formulated to support the weak links of the industrial chain and the emerging lithium extraction technology. It is also necessary to enhance technological research, such as the key technology to extract lithium from middle and deep layer brine and recovery of waste lithium batteries, formulate the recovery policies and the system of technological standards, ensure a healthy industrial development for recovery of lithium batteries, and strengthen analysis and evaluation on the whole service period of lithium development projects, thus maintaining a sustainable industrial development.
Practice from Construction of Low Carbon Demonstration Zone at Lamadian Oilfield in Daqing
Li Xingguo, Kan Baochun, Li Shutong
2024, 43(1): 103-108. Abstract ( )   PDF (2892KB) ( )  
Under the background of“ dual carbon” goal, Daqing Oilfield spares no efforts to construct the clean high-efficiency energy system and the million-kilowatt new energy base. Taking into account super-high water-cut development and typical characteristics of a complete oilfield, Lamadian Oilfield tried to construct the Labei northern block low carbon demonstration zone on the basis of the resource advantages. Based on a comprehensive energy survey, the oilfield clearly identified gray electricity and natural gas as the targets for replacement and came up with the two-step construction principle of“ energy saving for carbon reduction and keeping clean for carbon replacement”. Combined with the heat-using characteristics, the oilfield made an overall plan for residual heat, geothermal heat, solar heat and electrical hear reciprocating with other energy in the efforts for re-creation of the technical process, stereoscopic energy efficiency, replacement by clean heat energy, and replacement by clean electrical energy. Based on such characteristics as high intensity of pipeline networks in the central part of the oilfield and a large quantity of land available for use in the surrounding area, the oilfield was targeted at maximum power generation and minimum abandoned power and optimized distribution and scale of wind and solar electricity generation, thus bringing about regional multi-energy reciprocation, balance between energy supply and consumption and high replacement rate. The low carbon demonstration zone can make an in-depth integration of new energy technology with the existing production technical process, launching the pilot study of energy storage, hydrogeneration, micro power grid, and energy regulation technology. Construction of the low carbon demonstration zone is expected to completed in 2025 when the clean energy replacement rate will reach 46.4 percent, effectively accelerating the oilfield's energy transformation and green lowcarbon transition.
Construction and Operational Management of Concentrated Photovoltaic Power Project at Yumen Oilfield
Guo Dongkai, Chen Yong, Zhang Jia, Chen Lianshan, Wang Haiquan, Lu Shidong, Guo Wei
2024, 43(1): 109-114. Abstract ( )   PDF (4491KB) ( )  
During the 14th Five-year Plan period, Yumen Oilfield took advantage of the nation’s “carbon peak and carbon neutrality” strategic opportunity to promote green low-carbon transition. The oilfield located new energy as the third main business after oil and gas exploration and development and oil refining business in the efforts to make full use of the regional abundant wind, solar and land resources, power grid and industrial and economic priorities. It adopted a series of measures to strengthen organization of the project, control the engineering progress and emphasize the construction quality, thus effectively and quickly completing CNPC’s first concentrated photovoltaic power generation/grid connection project. After the power station was put into operation, a number of measures were taken to lower the operational cost with active involvement in electric power trading and continual efforts for enhanced maintenance and management. Focusing on the problems currently existing in operation of the power station, this paper comes up with some suggestion for further improvement of quality and efficiency. As of November 2003, electricity generated from the East Yumen 200 MW photovoltaic power station and connected to the grid was accumulated to exceed 7.5×108kW·h, achieving good economic performance by creating more than 70 million in profit. This project provides a duplicable and extendable "Yumen style" for construction of a traditional energy enterprise and operation of a concentrated photovoltaic power generation and grid connection project.
Study and Practice of Wind and Solar Power Projects in Jilin Oilfield
Jia Xuefeng, Xue Guofeng
2024, 43(1): 115-121. Abstract ( )   PDF (3116KB) ( )  
Under the“ dual carbon” goal, Jilin Oilfield accelerated the green low-carbon transition, promoted integrated development of oil and gas with new energy and created a new situation of three businesses-crude oil, natural gas and new energy. Focusing on the energy-consuming characteristic and oil and gas production and the actual demand for clean replacement, the oilfield took full advantage of the regional wind and solar resources, the power grid of the oilfield’s own, electric power consumption and absorption, and land resources. Guided by the demand, consumption and absorption, the oilfield constructed the 15×104kW self-consumed and absorbed wind and solar power generation project. With the construction type and installed capacity of the wind and solar power project planned reasonably, the oilfield constructed more than 400 distributed and concentrated photovoltaic spots with a total electricity volume of 7.1×104kW and 18 concentrated and distributed wind-driven generators with a total electricity volume of 7.8×104kW. The annual power generation capacity reached 3.6×108kW·h while the proportion for replacing grid power with green electricity accounted for 29.3 percent, thus effectively improving the energy-consuming structure and dramatically reducing the energy-consuming cost. To develop the wind and solar power generation business at oilfields, it is proposed to enlarge the construction scale of the self-consumed and absorbed green power project. In the northern region of the country, it’s better avoid construction in winter. As for distributed wind and solar power generation projects, it is necessary to strengthen management of online measurement. The self-consumed and absorbed power projects should be independently evaluated to facilitate development of carbon asset.
Innovation and Practice from Changqing Oilfield Distributed PV Project
Yang Xuefeng, Liang Lei, Zhou Xingze, Yan Gengcheng, Wang Long, Xing Jia
2024, 43(1): 122-126. Abstract ( )   PDF (2998KB) ( )  
With the progress made in fulfillment of China’s dual carbon goal, Changqing Oilfield spared no efforts to promote green and low-carbon transitional development and establish the model for oil and gas development in harmony with new energy. Changqing used the remaining space in the well sites and stations of the oil and gas fields to construct distributed photovoltaic power stations to provide electric power for oil and gas facilities. Changqing Oilfield also studied and formulated the distributed PV development plan and technological innovation roadway while strengthening efforts for transformation of PV power and technical system, EOR of oil wells and improvement of terminal electrification rate. When the project was organized and carried out, the oilfield cooperated with the specialized design units to promote the design standardization and strictly adhered to the principles for level-bylevel supervision, on-the-site supervision and marketized construction. As for operation and management, the oilfield stepped up construction of digital platform, management of PV components cleaning, inspection and treatment of accidents. The photovoltaic power constructed and connected to the stations reached 56 MWp in 2002. The annual power generating hours reached 1463h in 2023 with power generation amounting to 7692×104kW·h, saving 42.31 million yuan of electricity expense and making remarkable economic performance.
Study and Practice from Construction of Zero-carbon Desert Highway in Tarim
Lei Ting, Chen Yabing, Zhao Dongli, Tao Bo, Feng Wei, Ma Qun
2024, 43(1): 127-131. Abstract ( )   PDF (8488KB) ( )  
Tarim desert highway is the longest in the world to go through a flowing desert. Completion of this highway allows vehicles to travel nearly 500 kilometers from the north of the Tarim Basin to the south. Located in the hinterland of the desert with the water-source wells distributed sparsely, the desert is unable to depend on the power grid for 86 water-source wells along the line. Therefore, diesel engines are used for water supply. Under the “dual carbon” goal, Tarim Oilfield kicked off the zero-carbon desert highway demonstration project. The oilfield took advantage of the good solar energy radiation conditions in the desert area to bring the diesel-powered water-source wells under transformation. The power generation-collection of flows-reduction of pressure-power transmission/storage process was adopted to use photovoltaic power and electrochemical energy storage for replacement of diesel consumption. The prevention plants along the highway were irrigated with water pumped by means of green power. The total installed capacity of this demonstration reached 3410 kW and the annual power generation approached 362×104kW·h. Meanwhile, the annual reduction of CO2 emission reached 3254 tons, thus bringing about integration of photovoltaic power generation, sand prevention and solidification, and desert treatment and establishing the cyclic development model of multi-element integration of “power generation on the plate, plantation under the plate, sand control for earth modification and integrated utilization of water sources”. The desert highway is entirely brought under zero emission, allowing oil and gas development along the road in harmony with ecological protection.
Practice from Wuchen Geothermal Heating Project in Shandong
Lv Boshun, Zhao Zhongxin, Huang Hongxiang, Hao Wenlong, Zheng Zijian, Wang Yujia, Liu Niqin, Cao Wei
2024, 43(1): 132-139. Abstract ( )   PDF (4772KB) ( )  
Under the “dual carbon” goal, Jidong Oilfield constructed a clean energy geothermal heating project in Wucheng County, Dezhou City, Shandong Province in 2021, the first of its kind outside Petro China’s business operating region. The project, when completed, heated an area of 235×104m2 and later 310×104m2 after expansion. This article analyzes layout of surface engineering construction, testing water-pumping re-irrigation and its results, the evaluation system for geological resource, application of geothermal development technologies in 18 items of six categories, and managerial experience. It also makes a careful analysis of the geothermal and geological conditions in Wucheng County. The irrigation test was reasonably arranged and carried out on the basis of geothermal resource evaluation. Engineering construction of the geothermal development project depended on CNPC’s technological advantages of geothermal development and utilization in the areas of exploration and development, geological evaluation and engineering construction. The project achieved the operational results, satisfying the local government's heating demand for people’s liveliness and various specifications and standards of geothermal development and utilization. This project can annually provide 55.656×104GJ of heat, equal to 5.417×104 tons of standard coal, and reduce 3.7919×104 tons of CO2. It opened up an applicable way to provide clean concentrated heating in urban areas.
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