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Comparison of Formation Conditions of Source Rocks of Fengcheng and Lucaogou Formations in the Junggar Basin,NW China:Implications for Organic Matter Enrichment and Hydrocarbon Potential

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Journal of Earth Science 2023年第4期34卷 1026-1040页

作者： Shiju Liu gang Gao wenzhe gang Baoli Xiang Ming Wang Chengyun Wang College of Geosciences China University of PetroleumNo.18 Fuxue RoadBeijing 102249China State Key Laboratory of Petroleum Resource and Prospecting China University of PetroleumNo.18 Fuxue RoadBeijing 102249China PetroChina Research Institute of Petroleum Exploration&Development Beijing 100083China Experimental Testing Institute PetroChina Xinjiang Oilfield CompanyKaramay 834000China Exploration and Development Research Institute of PetroChina Huabei Oilfield Company Renqiu 062552China

Shales in the Carboniferous–Permian Fengcheng(FC) and Lucaogou(LCG) formations in Junggar Basin are important organic rich rocks containing significant oil resources.To evaluate the difference in sedimentary environment conditions and hydrocarbon-generating potential between the FC and LCG formations.Total organic carbon(TOC),Rock-Eval pyrolysis,solvent extraction,column fractionation,stable carbon isotope,gas chromatography-mass spectrometry(GC-MS) of saturated hydrocarbons and organic petrology from the source rocks of FC and LCG formations.were analyzed.The biomarker composition indicates that during the deposition of FC,LCG-1 to LCG-2,the sedimentary environment for the source rock formations changed with gradual decrease of salinity,from anoxic to dyoxic/suboxic in redox conditions,and from strong stratification to weakened stratification of water.The FC Formation source rock,with main telalginite(planktonic green algae),archaebacteria and minor terrestrial organic matter,deposited in the environment characterized by high salinity and strongly reducing condition.Its TOC content is relatively low with a high original hydrocarbongenerating potential of unit organic material.The LCG Formation source rock deposited in the environment with low salinity and large variations,the organic matter is mainly sourced from telalginite(planktonic green algae),lamalginite,bacteria and higher plants,resulting in strong heterogeneity of the source rock.The abundance of TOC is high,but the original hydrocarbon generation potential of unit organic matter is lower than that of FC Formation.The results provide a geochemical basis for further study of saline-brackish water sedimentary environment shales in the Junggar Basin.

关键词： geochemistry biogenic precursors depositional conditions Fengcheng Formation LucaogouFormation JunggarBasin.

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Organic matter enrichment in the first member of the Xiagou formation of the lower Cretaceous in the Jiuquan Basin, China

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Acta Geochimica 2016年第1期35卷 95-103页

作者： Lixin Pei gang Gao wenzhe gang Zhilong Huang Guofu Ma Zhiming Yang Jianjun Chen College of Geosciences China University of Petroleum Research Institute of Exploration and Development Yumen Oilfield Company CNPC

The sources and enrichment of organic matter in a sediment core in the first member of the Xiagou Formation(K_1g^1) from the Chang 2-2 borehole of the Jiuquan Basin,NW China,have been examined using Rock-Eval,maceral,carbon isotopes and biomarker data.This data indicates that highly variable organic matter sources and preservation conditions in response to climate change.TOC content,HI,and δ^(13)C value were strongly correlated with the abundance of gammacerane,woody organic matter content,steranes/hopanes ratio,and C_(29) sterane content.This correlation demonstrates the importance that the control of the salinity of the depositional environment and organic matter sources can have upon the enrichment,type,and carbon isotopic composition of organic matter.In the Jiuquan Basin's relatively high temperature and arid climate,high salinity lakes with high primary productivity of algae,planktons,and bacteria,and good organic matter preservation conditions(anoxic bottom water) resulted in the enrichment of isotopically-light algae-bacterial organic matter.In the Jiuquan Basin's regions with a relatively low temperature and wet climate,fresh lakes with low primary productivity of algae,planktons,and bacteria received significant terrigenous high plants input,resulting in the deposition of a low abundance of isotopically heavier terrestrial organic matter.

关键词：有机质含量酒泉盆地富集中国碳同位素组成白垩系岩心沉积物陆源有机质

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鄂尔多斯盆地西南缘平凉地区长8油藏油源对比及油气充注特征

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天然气地球科学 2024年第1期35卷 149-163页

作者：曹晶晶刚文哲杨尚儒罗安湘张晓磊白杨梁彦伟中国石油大学(北京)油气资源与探测国家重点实验室北京102249 中国石油大学(北京)地球科学学院北京102249 中国石油长庆油田分公司油气工艺研究院陕西西安710018 中国石油长庆油田分公司勘探开发研究院陕西西安710018

鄂尔多斯盆地西南缘平凉地区是近年来盆地边缘增储上产的重要勘探新区,受多期构造运动影响,该区油气勘探程度低,长8段油藏油气来源及成藏规律存在争议。通过烃源岩有机地球化学特征、油源对比、烃源岩生烃期与成藏期匹配关系、储层特征... 详细信息

鄂尔多斯盆地西南缘平凉地区是近年来盆地边缘增储上产的重要勘探新区,受多期构造运动影响,该区油气勘探程度低,长8段油藏油气来源及成藏规律存在争议。通过烃源岩有机地球化学特征、油源对比、烃源岩生烃期与成藏期匹配关系、储层特征及构造演化对油气充注过程的影响等方面的研究,明确了研究区长8段油气来源及运聚规律,建立了油气成藏模式。结果表明:研究区长73亚段黑色页岩有机质丰度高,干酪根类型主要为Ⅰ型,处于成熟阶段,以生油为主,长8段原油来源于长73亚段黑色页岩。长73亚段和长8段暗色泥岩有机质丰度低,干酪根类型为Ⅱ—Ⅲ型,不具有生烃贡献。研究区长8段油藏流体包裹体呈蓝色荧光,均一温度介于115~130℃之间,存在Ⅰ期油气充注。研究区长73亚段黑色页岩主生烃期与长8段油藏油气充注期相匹配,生烃高峰期和成藏期均为早白垩世末期(约100 Ma)。研究区构造呈现“西高东低”特征,发育高角度断裂,长8段储层物性较好、微裂缝发育,长73亚段黑色页岩生成的油气沿断裂向长8段储层中运移,构造高部位控制着长8段油气分布。研究对盆地边缘新区的下一步勘探部署具有重要意义。

关键词：黑色页岩流体包裹体油源对比油气充注平凉地区鄂尔多斯盆地

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轧制变形及再结晶00Cr12铁素体不锈钢中的{011}/{011}近奇异晶界

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中国科学：技术科学 2024年第3期54卷 459-476页

作者：黄新宇王卫国 ROHRER Gregory S 徐刚陈松冯小铮张厚安陈文哲周邦新福建理工大学晶界工程研究所福州350118 福建理工大学材料科学与工程学院福州350118 Department of Materials Science and Engineering Carnegie Mellon UniversityPittsburgh 15213-3890USA 厦门理工学院材料科学与工程学院厦门361024 上海大学材料研究所上海200072

不同于低层错能面心立方结构的奥氏体不锈钢,高层错能体心立方结构的铁素体不锈钢在形变及再结晶等组织重构过程中很难形成结构稳定且十分耐蚀的奇异晶界(共格孪晶界).研究{011}/{011}近奇异晶界的影响因素和形成机理,将有可能为改善铁... 详细信息

不同于低层错能面心立方结构的奥氏体不锈钢,高层错能体心立方结构的铁素体不锈钢在形变及再结晶等组织重构过程中很难形成结构稳定且十分耐蚀的奇异晶界(共格孪晶界).研究{011}/{011}近奇异晶界的影响因素和形成机理,将有可能为改善铁素体不锈钢,特别是低Cr铁素体不锈钢晶间腐蚀性能提供晶界工程新思路.本文选用经固溶处理和组织均匀化处理的00Cr12低Cr铁素体不锈钢为实验材料,5个平行试样分别在350℃,500℃,580℃,650℃和690℃进行厚度减缩量为70%的单向轧制变形后,立即进行750℃、2 h再结晶退火处理.使用基于电子背散射衍射和五参数分析的晶界界面匹配表征方法对上述样品进行测试和分析发现,轧制温度对00Cr12铁素体不锈钢再结晶{011}/{011}近奇异晶界比例有显著影响,再结晶后的{011}/{011}近奇异晶界比例随再结晶退火前轧制温度的升高先上升再下降,其中经650℃轧制的样品,其再结晶后{011}/{011}近奇异晶界比例达到极大值6.82%.取向分布函数(ODF)和重叠极图晶界迹线分析表明,经650℃轧制的样品,其再结晶组织中形成了强的{011}织构;具有{011}及其漫散取向的晶粒之间较多地存在/θ取向差关系(θ为绕的旋转角),其关联晶界为{011}/{011}近奇异晶界,这是经650℃轧制的样品,其再结晶后{011}/{011}近奇异晶界比例达到极大值的原因.离线原位表面侵蚀实验表明,{011}/{011}近奇异晶界的腐蚀抗力显著高于一般晶界.因此,基于本文研究结果,进一步调控并提高{011}/{011}近奇异晶界的比例将有助于从根本上显著改善00Cr12铁素体不锈钢晶间腐蚀性能.

关键词： 00Cr12铁素体不锈钢近奇异晶界晶界界面匹配晶间腐蚀

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运行于边侧物联网设备的区块链轻型应用研究与实现

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科技导报 2024年第9期42卷 60-66页

作者：衡星辰普钢李零陈达张劲松周智勋姜文喆南方电网数字电网集团有限公司广州510000 云南电网有限责任公司昆明650011 云南电网有限责任公司昆明供电局昆明650011 云南云电同方科技有限公司昆明650011

介绍了目前解决区块链存储问题的研究进展及解决方案。结合智慧用电平台边缘侧区块链的部署情况,在区块链轻型应用方面,采用分布式哈希表(DHT)分布式区块链存储方式实现边侧区块链数据存储。通过边侧区块链节点历史区块数据定时备份、... 详细信息

介绍了目前解决区块链存储问题的研究进展及解决方案。结合智慧用电平台边缘侧区块链的部署情况,在区块链轻型应用方面,采用分布式哈希表(DHT)分布式区块链存储方式实现边侧区块链数据存储。通过边侧区块链节点历史区块数据定时备份、共识算法多样选择和区块链镜像裁剪等方法配合实现边侧区块链节点的轻量化。指出随着电力物联网技术应用场景的丰富和持续发展,仍需持续深入研究,以寻找更加优化的算法模型和解决方案。

关键词：区块链边缘节点分布式哈希表链下存储智慧用电

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Hydrocarbon generation conditions and exploration potential of the Taoudeni Basin,Mauritania

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Petroleum Science 2009年第1期6卷 29-37页

作者： gang wenzhe Key Laboratory of Hydrocarbon Accumulation Mechanism Ministry of Education China University of Petroleum Beijing 102249 China

The Taoudeni Basin is a typical and steady intracratonic basin in Mauritania, northwest Africa. There are six sets of potential source rocks and five regional unconformable surfaces of the Infracambrian and Paleozoic developed in the basin. We used seismic stratigraphic correlation to recover the denudation thickness of formations at a particular well location. Studies of the hydrocarbon generation history of the basin illustrate that hydrocarbon migration and accumulation occurred in the end of the Carboniferous, and after that, the whole basin suffered denudation for a long period of time. Because there is no thick Mesozoic overburden in the basin, the Silurian source rocks could not generate hydrocarbon in the Mesozoic era for the second time. Consequently, the prospects for successful hydrocarbon exploration in the basin are not good.

关键词： Source rock burial history hydrocarbon generation history hydrocarbor prospect Taoudeni Basin

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Oil and gas resource potential of the lower members of E_(h3) in the lower Tertiary of the Biyang Depression, China

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Petroleum Science 2012年第1期9卷 18-24页

作者： gang wenzhe Wang Qingyu Luo Jiaqun College of Geosciences China University of PetroleumBeijing 102249China Exploration&Development Research Institute Daqing Oilfield CompanyPetroChinaHeilongjiang 163712China Research Institute of Petroleum Exploration and Development Henan Oilfield CompanyS1NOPECHenan 473132China

The lower Tertiary Eh3 is divided into two sections： the upper members of Eh3 and the lower members of Eh3 in the Biyang Depression. The first section is generally regarded as a key target of oil and gas exploration, but the resource potential of the lower members of Eh3 has been neglected. We have obtained new knowledge about Eh3 from comprehensive geological research. The lower members of Eh3 are high-quality and main source rocks, which have good oil and gas resource potential. This is a new direction for oil and gas exploration. The geochemistry characteristics of source rocks of the lower members of Eh3 in the lower Tertiary of the Biyang Depression were analyzed in detail. A basin modeling method was applied to hydrocarbon generation of the lower and upper members of Eh3 source rocks, the oil and gas resource potential was comparatively analyzed, and then favorable tectonic zones were pointed out. In the lower members of Eh3, a set of semi-deep lake to deep lake high-quality source rocks occurs rich in algae organisms, mainly of type II1, with a high abundance of organic matter. Most of the source rocks are just in the peak stage of hydrocarbon generation, which is a favorable foundation for forming abundant oil and gas resources in the Biyang Depression. The comparative analysis of the hydrocarbon- generation quantities between lower and upper members of the Eh3 source rocks shows that the lower members of Eh3 have good oil and gas resource potential, and the hydrocarbon-generation quantity accounts for 51% of the total in Eh3. Specifically, the oil-generating quantity accounts for 50% of the total and the gas-generating quantity accounts for two thirds of the total. Therefore, source rocks in the lower members of Eh3 of the Biyang Depression have good oil and gas resource potential, which is a key factor for future deep oil and gas exploration.

关键词： Geochemistry source rocks hydrocarbon-generation potential Biyang Depression

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Geochemistry of borehole cutting shale and natural gas accumulation in the deepwater area of the Zhujiang River Mouth-Qiongdongnan Basin in the northern South China Sea

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Acta Oceanologica Sinica 2018年第2期37卷 44-53页

作者： GAO gang ZHANG Gongcheng CHEN Guo gang wenzhe SHEN Huailei ZHAO Ke State Key Laboratory of Petroleum Resource and Prospecting China University of Petroleum (Beijing) Beijing 102249 China Research Institute CNOOC Beijing 100020 China Geophysical Exploration Research Institute of Huabei Oilfield Company Renqiu 062552 China

The Qiongdongnan Basin and Zhujiang River（Pearl River） Mouth Basin, important petroliferous basins in the northern South China Sea, contain abundant oil and gas resource. In this study, on basis of discussing impact of oil-base mud on TOC content and Rock-Eval parameters of cutting shale samples, the authors did comprehensive analysis of source rock quality, thermal evolution and control effect of source rock in gas accumulation of the Qiongdongnan and the Zhujiang River Mouth Basins. The contrast analysis of TOC contents and Rock-Eval parameters before and after extraction for cutting shale samples indicates that except for a weaker impact on Rock-Eval parameter S2, oil-base mud has certain impact on Rock-Eval S1, Tmax and TOC contents. When concerning oil-base mud influence on source rock geochemistry parameters, the shales in the Yacheng/Enping,Lingshui/Zhuhai and Sanya/Zhuhai Formations have mainly Type Ⅱ and Ⅲ organic matter with better gas potential and oil potential. The thermal evolution analysis suggests that the depth interval of the oil window is between 3 000 m and 5 000 m. Source rocks in the deepwater area have generated abundant gas mainly due to the late stage of the oil window and the high-supper mature stage. Gas reservoir formation condition analysis made clear that the source rock is the primary factor and fault is a necessary condition for gas accumulation. Spatial coupling of source, fault and reservoir is essential for gas accumulation and the inside of hydrocarbon-generating sag is future potential gas exploration area.

关键词： cutting shale organic geochemistry gas accumulation deepwater area Qiongdongnan Basin Zhujiang River Mouth Basin

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2023年度前列腺癌诊疗研究进展

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肿瘤综合治疗电子杂志 2024年第2期10卷 28-45页

作者：郝文哲陈东卢宁宁韩苏军司占南杨飞亚李文卓宋刚邢念增国家癌症中心/国家肿瘤临床医学研究中心/中国医学科学院北京协和医学院肿瘤医院泌尿外科北京100021 国家癌症中心/国家肿瘤临床医学研究中心/中国医学科学院北京协和医学院肿瘤医院放疗科北京100021

前列腺癌(prostate cancer,PC)是男性泌尿生殖系统中最常见的恶性肿瘤,在全球男性所有恶性肿瘤中发病率居第2位。虽然中国PC的发病率低于欧美国家,但随着人口老龄化、饮食习惯的改变和诊断技术的提高,PC的发病率和病死率呈逐年上升趋势... 详细信息

前列腺癌(prostate cancer,PC)是男性泌尿生殖系统中最常见的恶性肿瘤,在全球男性所有恶性肿瘤中发病率居第2位。虽然中国PC的发病率低于欧美国家,但随着人口老龄化、饮食习惯的改变和诊断技术的提高,PC的发病率和病死率呈逐年上升趋势。目前诊断方面,PC靶向穿刺、人工智能肿瘤评估及疗效预测是重要方向;治疗方面,Hood技术、机器人辅助下单孔根治性PC切除术及放射引导手术改善了患者预后;内分泌治疗在不同分层的患者中显示出良好临床获益;免疫治疗为PC治疗提供了新思路;大分割放射治疗等放射治疗新技术在PC的治疗方面得到越来越多地运用。但仍亟待探索新的诊断和治疗方式。本文将回顾2023年度PC的诊断和治疗进展,旨在为PC的临床治疗决策提供更多选择。

关键词：前列腺癌手术治疗内分泌治疗靶向治疗免疫治疗放射治疗

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Novel internal photoemission in manganite/ZnO heterostructure

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Science China Chemistry 2013年第5期56卷 583-587页

作者： ZHANG JiaQi HUANG KeKe SI wenzhe WU XiaoFeng CHENG gang FENG ShouHua State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of Chemistry Jilin University

A novel photovoltaic phenomenon of internal photoemission was found in a low cost manganite La0.62Ca0.29K 0.09MnO3 (LCKMO)/zinc oxide (ZnO) heterojunction bilayers grown on ITO substrate by pulsed laser deposition (PLD) at relative low growth temperature. The heterostructure ITO/LCKMO/ZnO/Al exhibits reproducible rectifying characteristics and light current under continuous laser irradiation of = 325 nm. We report here the influence of LCKMO/ZnO bilayers' thickness on the electrical and photoelectric properties of the heterostructure at room temperature. The power conversion efficiency (PCE) is achieved when the LCKMO and ZnO layers are thin enough or the full space charge layer is sufficient. We obtained the maximum value of PCE of 0.0145% when the thicknesses of LCKMO and ZnO layers are 25 and 150 nm, respectively. The open circuit voltage is 0.04 V under this condition due to the internal photoemission.

关键词：异质结氧化锌脉冲激光沉积功率转换效率生长温度空间电荷层 ZnO 整流特性

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