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Engineering practice of CO2 ESGR in Nanchuan normal-pressure marine shale gas reservoirs

Natural Gas Industry 2024年第4期44卷 83-92页

作者： Yao, Hongsheng Fang, Dazhi lu, Yiyu Wang, Baixue lu, zhaohui Gu, Hongtao Yan, Zhuolin Miao, Shipu Sinopec East China Oil & Gas Company Jiangsu Nanjing 210011 China State Key Laboratory of Coal Mine Disaster Dynamics and Control/ Chongqing University Chongqing 400044 China School of Resources and Safety Engineering Chongqing University Chongqing 400044 China

Current experimental researches and simulation have demonstrated the theoretical feasibility of CO2 flooding to enhance shale gas recovery, but its actual engineering effects have not been verified in field tests. Based on the geological occurrence and production behaviors of Nanchuan normal-pressure shale gas reservoir in the Sichuan Basin, this paper studies the mechanisms of shale isothermal adsorption and CO2-CH4 competitive adsorption, carries out the first field test of CO2 huff and puff in a normal-pressure marine shale gas attenuation well, and points out the research direction of establishing a set of technological system. And the following research results are obtained. First, in the late production period, a gas well enters the stage of low pressure and low production, presenting the characteristics of insufficient formation energy, so it is an important stage to improve the degree of reserve recovery of the well. Second, compared with low-pressure and high-pressure shale, normal-pressure shale is much higher in CH4 and CO2 adsorption capacity, so CO2 ESGR is feasible and necessary. Third, shale samples of normal, high and low pressure adsorb more CO2 than CH4 under the same conditions, and their gas adsorption capacities are ranked as Nanchuan (normal pressure) marine shale > Changning (high pressure) marine shale > Yanchang (low pressure) continental shale. Fourth, CO2 huff and puff shows a remarkable stimulation effect in the test well, with an increase of single-well estimated ultimate shale gas reserves (EUR) from 0.75×108 m3 to 0.90×108 m3, single-well controlled reserves of 5.186×108 m3 and a recovery factor increase by 2.9%. In conclusion, breakthrough progress has been made for the first time in the CO2 huff and puff test of a normal-pressure marine shale gas attenuation well in China, which provides important guidance and reference for the research & development and application of ESGR technologies for shale gas wells in China. What's more, it is in an urgent need to conduct the resource pote

关键词： Carbon dioxide

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Spatial-temporal shifting patterns and in situ conservation of spotted seal(Phoca largha)populations in the Yellow Sea ecoregion

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Integrative Zoology 2024年第2期19卷 307-318页

作者： Hongfei ZHUANG Fei SHAO Chao ZHANG Wancai XIA Shouqiang WANG Fangyuan QU Zongling WANG Zhichuang lu Linlin ZHAO zhaohui ZHANG First Institute of Oceanography Ministry of Natural ResourcesQingdaoChina Department of Natural Resources of Shandong Province Shandong Forestry Protection and Development Service CenterJinanChina National Park(Protected Areas)Development Center National Forestry and Grassland AdministrationBeijingChina College of Life Science China West Normal UniversityNanchongChina Liaoning Ocean and Fisheries Science Research Institute DalianChina

Understanding the habitat shifting pattern is a prerequisite for implementing in situ conservation of migratory species.Spotted seals(Phoca largha)inhabiting the Yellow Sea ecoregion(YSE)comprise a small population with independent genes and represent a charismatic flagship species in this region.However,this population has declined by 80%since the 1940s,and increased support from the countries around the YSE is urgently needed to address the potential local extinction risk.A time-series niche model and life-history weighted systematic conservation planning were designed on the basis of a satellite beacon tracking survey(2010–2020)of the YSE population.The results showed clustering and spreading shifting patterns during the breeding and migratory seasons,respectively.The closed-loop migration route formed in the YSE indicated that this population might be geographically isolated from populations in other breeding areas around the world.The conservation priority area(CPA),with an area of 19632 km^(2)(3.58%of the total YSE area),was the most effective response to the potential in situ risk.However,nearly 80%of the CPA was exposed outside the existing marine protected areas(MPAs).Future establishment of MPAs in China should strategically consider the conservation gap identified herein,and it is recommended for Korea’s closed fishing season to be spatially set in the western Korean Peninsula from May to August.This study also exemplified that the lack of temporal information would lead to the dislocation of niche modeling for migratory species represented by spotted seals.Attention should be paid to protecting small and migratory populations in marine biodiversity conservation planning.

关键词： conservation priority area marine protected area migration seasonal management spotted seal

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Low-field NMR application in the characterization of CO_(2)geological storage and utilization related to shale gas reservoirs:a brief review

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Frontiers of Earth Science 2023年第3期17卷 739-751页

作者： zhaohui lu Ke LI Xingbing LIU Peng ZHAO Jun LIU National and Local Joint Engineering Research Center of Shale Gas Exploration and Development Chongqing Institute of Geology and Mineral ResourceChongqing 401120China Key Laboratory of Shale Gas Exploration(Ministry of Natural Resources) Chongqing Institute of Geology and Mineral ResourcesChongqing 401120China MOE Key Laboratory of Deep Earth Science and Engineering Institute of New Energy and Low-Carbon TechnologySichuan UniversityChengdu 610065China State Key Laboratory of Coal Mine Disaster Dynamics and Control School of Resources and Safety EngineeringChongqing UniversityChongqing 400044China Chongqing Institute of Geological Survey Chongqing 401122China

CO_(2)geological storage and utilization(CGSU)is considered a far-reaching technique to meet the demand of increasing energy supply and decreasing CO_(2)emissions.For CGSUs related to shale gas reservoirs,experimental investigations have attracted variable methodologies,among which low-field NMR(LF-NMR)is a promising method and is playing an increasingly key role in reservoir characterization.Herein,the application of this nondestructive,sensitive,and quick LF-NMR technique in characterizing CGSU behavior in shale gas reservoirs is reviewed.First,the basic principle of LF-NMR for 1H-fluid detection is introduced,which is the theoretical foundation of the reviewed achievements in this paper.Then,the reviewed works are related to the LF-NMR-based measurements of CH_(4)adsorption capacity and the CO_(2)-CH_(4)interaction in shale,as well as the performance on CO_(2)sequestration and simultaneous enhanced gas recovery from shale.Basically,the reviewed achievements have exhibited a large potential for LF-NMR application in CGSUs related to shale gas reservoirs,although some limitations and deficiencies still need to be improved.Accordingly,some suggestions are proposed for a more responsible development of the LF-NMR technique.Hopefully,this review is helpful in promoting the expanding application of the LF-NMR technique in CGSU implementation in shale gas reservoirs.

关键词： CO_(2)/CH_(4)competitive adsorption shale gas reservoir CO_(2)geological storage gas recovery enhancement low-field NMR

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Brief overview and perspective on Advances in CO_(2)Geological Storage and Utilization(CGSU)

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Frontiers of Earth Science 2023年第3期17卷 643-645页

作者： Jun LIU Yanbin YAO Peng ZHAO zhaohui lu Yunzhong JIA Institute of New Energy and Low-Carbon Technology Sichuan UniversityChengdu 610065China School of Energy Resource China University of GeosciencesBeijing 100083China Frontiers Science Center for Deep-time Digital Earth China University of GeosciencesBeijing 100083China State Key Laboratory of Geohazard Prevention and Geoenvironment Protection Chengdu University of TechnologyChengdu 610059China School of Resources and Safety Engineering Chongqing UniversityChongqing 400044China

1 Introduction All over the world,with the intense longing for carbon emission reduction and the demand for clean energy(Feng et al.,2020;Iddphonce et al.,2020;Zhao et al.,2022),a promising and far-reaching technology called CO_(2) geological storage and utilization(CGSU)has attracted increasing attention(Iddphonce et al.,2020;Ma et al.,2020).This CGSU technique enjoys huge potential and broad prospect,because it usually enables dual rewarding consequences–to sequester CO_(2) and to acquire energy from geological formations,such as geothermal rock,oil and gas reservoirs(Iddphonce et al.,2020;Klewiah et al.,2020;Liu et al.,2020).In fact,the CGSU has been followed by interest of scientists all around world since geological storage was first proposed in the 1970s as a way to dispose of the CO_(2).Meanwhile,the CGSU technique is not mature enough and usually involves a complicated THMC coupled process,making it necessary to deploy more insightful investigations to boost the development of CGUS technique in a robust,safe and cost-effective manner(Liu et al.,2021b;Zhao et al.,2021;Liu et al.,2023).Basically,this theme is expected to enhance the knowledge about the crucial role of CGSU in achieving the carbon emission reduction–an issue concerned to the world(Liu et al.,2021a;Xie et al.,2021;Zhao et al.,2021;Zhao et al.,2022).Therefore,this special issue is organized and tends to present newest achievements regarding the CGSU,such as the theory expansion,economic analysis,experimental investigation and numerical simulation.

关键词： formations reservoirs rock

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睑结膜巨大恶性黑色素瘤1例

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中华眼科杂志 2024年第3期60卷 278-280页

作者：张晓辉杨喆卢叶冯朝晖西安交通大学第二附属医院眼科西安710004

1例81岁左眼肿物女性患者,半年内左眼米粒大小黑色肿物体积迅速增大,延伸至眼外并伴表面糜烂出血,经活体组织检查和全身麻醉下眼眶内容物摘除术后组织病理学检查,诊断为左眼睑结膜巨大恶性黑色素瘤,组织病理类型为梭形细胞。术后未接受... 详细信息

1例81岁左眼肿物女性患者,半年内左眼米粒大小黑色肿物体积迅速增大,延伸至眼外并伴表面糜烂出血,经活体组织检查和全身麻醉下眼眶内容物摘除术后组织病理学检查,诊断为左眼睑结膜巨大恶性黑色素瘤,组织病理类型为梭形细胞。术后未接受局部放射治疗和全身化学治疗,半年后去世。

关键词：结膜肿瘤黑色素瘤预后

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Evaluation of gas production from multiple coal seams： A simulation study and economics

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International Journal of Mining Science and Technology 2018年第3期28卷 359-371页

作者： Yanting Wu Zhejun Pan Dingyu Zhang zhaohui lu luke D. Connell College of Geoscience and Surveying Engineering China University of Mining and Technology (Beijing) Beijing 100083 China CSIRO Energy Business Unit Clayton South VIC 3169 Australia Chongqing Institute of Geology and Mineral Resources Chongqing 400042 China

Gas production from multiple coal seams has become common practice in many coal basins around the world. Although gas production rates are typically enhanced, the economic viability of such practice is not well studied. In order to investigate the technical and economic feasibility of multiple coal seams production, reservoir simulation integrated with economics modelling was performed to study the effect of important reservoir properties of the secondary coal seam on production and economic performance using both vertical and horizontal wells. The results demonstrated that multiple seam gas production of using both vertical and horizontal wells have competitive advantage over single layer production under most scenarios. Gas content and permeability of the secondary coal seam are the most important reservoir properties that have impact on the economic feasibility of multiple seam gas production. The comparison of vertical well and horizontal well performance showed that horizontal well is more economically attractive for both single well and gas field. Moreover, wellhead price is the most sensitive to the economic performance, followed by operating costs and government subsidy. Although the results of reservoir simulation combined with economic analysis are subject to assumptions, multiple seam gas production is more likely to maintain profitability compared with single layer production.

关键词：经济性能生产率煤气多重模拟气体生产评估经济可行性

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Hypoglycemic Effect of Radix Et Rhizoma Salviae Miltiorrhizae,Guixi Green Tea and Their Compatibility on Mice

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Medicinal Plant 2024年第3期15卷 53-55,70页

作者： Chen YANG zhaohui HUANG Liqing TANG Wenjing HUANG Danyu CHEN Rujun SHI Suoyi HUANG Lixiang lu Shiyou ZHOU School of Clinical Medicine Youjiang Medical University for NationalitiesBaise 533000China School of Pharmacy Youjiang Medical University for NationalitiesBaise 533000China Key Laboratory of Research on Characteristic Ethnic Medicine in the Youjiang River Basin of Guangxi Colleges and Universities Baise 533000China

[Objectives]To explore the hypoglycemic effect of Radix Et Rhizoma Salviae Miltiorrhizae,Guixi green tea and their compatibility on mice,so as to provide more options for the adjuvant treatment of diabetes and improve the comprehensive utilization value of Guixi green tea.[Methods]After being fed adaptively for 7 d,60 SPF-grade male mice were intraperitoneally injected with alloxouracil(180 mg/kg)to induce hyperglycemia model,from which 35 mice with a successful model were selected.They were randomly divided into 5 groups(Danshen group,green tea group,compatible group,positive control group and blank control group),with 7 animals in each group.The mice in all groups were administered according to the dose of 200 mg/kg once a day for 15 d.After the last administration,their body weight was measured on the 15 th day after fasting for 12 h,and their fasting blood glucose was measured by tail clipping.[Results]After modeling,the mice in each group showed typical hyperglycemia symptoms,namely obvious polydipsia,polyphagia,polyuria and weight loss.Compared with the blank control group,Danshen group and green tea group had obvious hypoglycemic effect(Plusions]Danshen,Guixi green tea and their compatibility had the effect of lowering blood sugar,among which the compatible group had the most obvious effect.

关键词： Salvia miltiorrhiza Guixi green tea Compatibility Blood sugar

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NiCoCrFeAlTiMoW合金长期时效过程中γ′相粗化对拉伸性能的影响

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材料工程 2024年第2期52卷 172-179页

作者：刘继文胡朝辉王君阳林雅婷张璐沈阳航空航天大学材料科学与工程学院沈阳110136 沈阳航空航天大学航空制造工艺数字化国防重点学科实验室沈阳110136

采用真空电弧熔炼炉制备一种γ′相强化型NiCoCrFeAlTiMoW合金,利用X射线衍射仪(XRD)、扫描电镜(SEM)、能谱仪(EDS)及拉伸试验机研究合金在750,850,950℃下,经200 h长期时效后γ′相的粗化行为与力学性能的演变规律及机制。结果表明:随... 详细信息

采用真空电弧熔炼炉制备一种γ′相强化型NiCoCrFeAlTiMoW合金,利用X射线衍射仪(XRD)、扫描电镜(SEM)、能谱仪(EDS)及拉伸试验机研究合金在750,850,950℃下,经200 h长期时效后γ′相的粗化行为与力学性能的演变规律及机制。结果表明:随时效时间的延长,γ′相在时效过程中始终为球形,γ′相尺寸逐渐增大,且在750,850,950℃均发生凝并现象。合金具有较高的扩散激活能,其值为357 kJ/mol,这主要是由于基体为成分复杂的高熵固溶体,受迟滞扩散效应影响,Al,Ti原子在基体中的扩散变得困难。合金经750℃时效后屈服强度逐渐提高,经850℃时效后的屈服强度先升高后降低,经950℃时效后的屈服强度逐渐降低,合金屈服强度的改变是由γ′相尺寸增加导致合金的沉淀强化机制发生转变所引起的。

关键词： γ´相粗化高熵合金力学性能强化机制

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Numerical modeling of the dynamic variation in multiphase CH_(4) during CO_(2) enhanced gas recovery from depleted shale reservoirs

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Frontiers of Earth Science 2021年第4期15卷 790-802页

作者： Lijun CHENG Ye ZHANG Jun LIU zhaohui lu Chunlin ZENG Peng ZHAO Key Laboratory of Shale Gas Exploration(Ministry of Natural Resources) Chongqing Institute of Geology and Mineral ResourcesChongqing 401120China Institute of New Energy and Low-Carbon Technology Sichuan UniversityChengdu 610065China College of Architecture and Environment Sichuan UniversityChengdu 610065China

Regarding CO_(2)enhanced shale gas recovery,this work focuses on changes in the multiphase(free/adsorbed)CH_(4)in the process of CO_(2)enhanced shale gas recovery,by utilizing a rigorous numerical model with real geological parameters.This work studies nine injection well(IW)and CH_(4)production well(PW)combinations of CO_(2)to determine the influence of IW and PW locations on the dynamic interaction of multiphase CH_(4)during 10000 d of CO_(2)injection.The results indicate that the content of both the adsorbed CH_(4)and free CH_(4)is strongly variable before(and during)the CO_(2)-CH_(4)displacement.In addition,during the simulation process,the proportion of the adsorbed CH_(4)among all extracted CH_(4)phases dynamically increases first and then tends to stabilize at 70%-80%.Moreover,the IW-PWs combinations signifi-cantly affect the outcomes of CO_(2)enhanced shale gas recovery-for both the proportion of adsorbed/free CH_(4)and the recovery efficiency.A longer IW-PW distance enables more adsorbed CH_(4)to be recovered but results in a lower efficiency of shale gas recovery.Basically,a shorter IW-PWs distance helps recover CH_(4)via CO_(2)injection if the IW targets the bottom layer of the Wufeng-Longmaxi shale formation.This numerical work expands the knowl-edge of CO_(2)enhanced gas recovery from depleted shale reservoirs.

关键词： CO_(2)-CH_(4)displacement free gas Longmaxi shale CH_(4)desorption numerical simulation

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动力电池技术在内河船舶的实践应用与发展

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中国海事 2024年第6期 52-54页

作者：陆朝晖重庆市港航海事事务中心重庆400020

在专题调研的基础上,介绍了动力电池技术及其在内河船舶的实践应用,分析了制约电动船舶发展中的主要问题,提出有序推动“电化长江”战略实施、促进内河船舶迭代升级的发展愿景和对策,为推动内河航运绿色高质量发展提供建议。

关键词：长江动力电池电动船舶

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