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Pore structure characteristics and controlling factors of different lithofacies in lacustrine shale: A case study of Fengcheng Formation in Mahu Sag， Junggar Basin

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Journal of Earth Science 2024年

作者： Jiahao Lü Fujie Jiang Jing Xue Tao Hu Yuping Wu Chenxi Zhang Meiling Hu renda huang Key Laboratory of Petroleum Resource Research， Institute of Geology and Geophysics， Chinese Academy of Sciences State Key Laboratory of Petroleum Resources and Prospecting， China University of Petroleum (Beijing) College of Geosciences， China University of Petroleum (Beijing) University of Chinese Academy of Sciences Research Institute of Oriental Geophysical Company，CNPC

The practice of shale oil exploration and development all over the world has shown that reservoir quality is a key factor restricting oil and gas production， the study of ultra-deep (4 500 m) reservoirs in petroliferous basins is a hot spot for oil and gas exploration in the world today. In this paper， taking the Fengcheng Formation (P1f) in Mahu Sag of Junggar Basin as an example， through experiments such as geochemistry， whole rock analysis， FE-SEM， N2 adsorption， and CO2 adsorption， the lithofacies are separated， and the pore structure properties of the various lithofacies are compared. Discuss the primary influencing elements that lead to pore structure differences. The results reveal that the shale of the P1f can be separated into four lithofacies (namely felsic shale， mixed shale， lime shale and dolomitic shale)， according to the mineral composition. The shale pores of P1f develop intergranular pores， intragranular pores， organic pores and micro-fractures. Among them， intergranular pores， intragranular pores and micro-fractures are the most developed， and the pore size is larger， which is a favorable storage space. Different lithofacies have different pore development characteristics. With the change of lithofacies (mixed shale - dolomitic shale - lime shale - felsic shale)， the size of the developed pores changes from small to large， and the pore structure changes from "Mainly microporous" to "mainly macropores". The felsic shale has developed laminae， mainly mesopores and macropores， with the largest pore diameter and the highest content of brittle minerals， which is the dominant lithofacies in the shale oil reservoir of the P1f. TOC， felsic and clay minerals all affect the pore development of shale in the P1f， but the influence of organic matter and inorganic minerals on pore volume varies with pore size. The purpose of this article is to characterize the pore structures and regulators of various lithofacies in lacustrine shale and to provide new ideas for

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Factors Controlling Organic Matter Enrichment in Alkaline Lacustrine Source Rocks:A Case Study of the Late Paleozoic Fengcheng Formation in the Junggar Basin,NW China

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Acta Geologica Sinica(English Edition) 2023年第6期97卷 1744-1755页

作者： huang renda JIANG Fujie HU Tao CHEN Di huang Liliang LIU Zheyu WANG Xiaohao ZHANG Chenxi LU Jiahao WU Yuping State Key Laboratory of Petroleum Resources and Prospecting China University of Petroleum(Beijing)Beijing 102249China College of Geosciences China University of Petroleum(Beijing)Beijing 102249China Research Institute of Petroleum Exploration and Development Xinjiang Oilfield CompanyCNPCKaramayXinjiang 834000China

The late Paleozoic Fengcheng Formation shale(LPF shale)in the Junggar Basin,NW China,is the oldest alkaline source rock discovered in the world,providing a unique perspective with which to explore organic matter(OM)enrichment in alkaline lake *** with the organic carbon isotope profile and paleoenvironmental proxies,this study reveals that the LPF shale was deposited in an arid climate with high salinity and a strong reducing environment,accompanied by frequent volcanic *** TOC values are concentrated in two intervals with frequent fluctuations in OM types.A negative excursion due to changes in sedimentary OM source is found in the δ^(13)C_(org) *** excursion corresponds to the OM enrichment interval and is accompanied by abnormally high values of Sr/Ba and Sr/*** implies that the extreme arid climate has led to high salinity,resulting in strong reducibility and changes in paleontological assemblages,which in turn controlled the differential enrichment of *** Fengcheng ***-quality source rocks are the result of the combined action of climatic events,volcanism,high-salinity water environment and superior hydrocarbon-generating *** results provide new insights into the formation conditions of terrestrial alkaline high-quality source rocks and the factors controlling alkaline OM enrichment.

关键词： organic matter enrichment control factors alkaline lake source rocks Fengcheng Formation Junggar Basin

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Hydrocarbon Generation Characteristics of Source Rocks from Different Saline Environments in the Dongpu Depression,Bohai Bay Basin,China

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Acta Geologica Sinica(English Edition) 2021年第4期95卷 1260-1278页

作者： LI Wendu ZHANG Pengyuan JIANG Fujie ZHANG Yunxian huang renda XU Tianwu ZHOU Yongshui LI Longlong JIANG Wenli State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development Beijing 100083China State Key Laboratory of Petroleum Resources and Prospecting China University of Petroleum(Beijing)Beijing 102249China Basin and Reservoir Research Center China University of Petroleum(Beijing)Beijing 102249China Zhongyuan Oilfield Branch SINOPECPuyangHenan 457001China Wuxi Research Institute of Petroleum Geology Sinopec Petroleum Exploration&Production Research InstituteWuxiJiangsu 214000China Strategy Research Center of Oil and Gas Resources Ministry of Land and ResourcesBeijing 100034China

The Dongpu Depression is a secondary salt-bearing tectonic unit in the Bohai Bay Basin,eastern *** depositional environment of this depression regarding its Paleogene strata is clearly different in plane,including the saltwater environment(SE)in the north,the freshwater environment(FE)in the south and the brackish water environment(BE)in the *** result of oil and gas exploration in the Dongpu Depression shows that more than 90%of the proven oil reserves are distributed in the northern saltwater *** studies indicate that the organic geochemistry characteristics and the hydrocarbon generation capacity of the source rocks are very clearly diverse under different environments,which results in the significant differences in the proved reserves between the north and the *** order to further explore the differences in the hydrocarbon generation capacity of the source rocks under distinct depositional environments and the mechanism of their occurrence,three samples from different depositional environments(W18-5 for SE,H7-18 for BE,CH9 for FE)were used for confined gold tube pyrolysis *** results show that the CH4 yields of W18-5,H7-18 and CH9 increase with increasing temperature,the maximum yields being 405.62 mg/g TOC,388.56 mg/g TOC and 367.89 mg/g TOC,*** liquid hydrocarbon yields of W18-5,H7-18 and CH9 firstly increase with increasing temperature and then decrease after the critical *** maximum yields of C6-14 are 149.54 mg/g TOC,140.18 mg/g TOC and 116.94 mg/g TOC,the maximum yields of C14+being 852.4 mg/g TOC,652.6 mg/g TOC and 596.41 mg/g TOC,respectively for W18-5,H7-18 and *** summarize,the order of hydrocarbon potential from high to low is W18-5,H7-18 and *** this basis,through analyzing the influencing factors of hydrocarbon differences,this paper reveals that the saltwater environment is characterized by 4 factors:higher salinity,halophilic algae,high paleo-productivity and a strongly

关键词： sapropelite exinite gold-tube pyrolysis experiment hydrocarbon generation evolutionary model Dongpu Depression Bohai Bay Basin

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Controlling factors and models of shale oil enrichment in Lower Permian Fengcheng Formation,Mahu Sag,Junggar Basin,NW China

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石油勘探与开发:英文版 2023年第4期50卷 812-825页

作者： JIANG Fujie HU Meiling HU Tao LYU Jiahao huang Liliang LIU Chenglin JIANG Zhenxue huang renda ZHANG Chenxi WU Guanyun WU Yuping State Key Laboratory of Petroleum Resources and Prospecting China University of Petroleum(Beijing)Beijing 102249China College of Geosciences China University of Petroleum(Beijing)Beijing 102249China Research Institute of Exploration and Development PetroChina Xinjiang Oilfield CompanyKaramay 834000China

Based on the combination of core observation,experimental analysis and testingand geological analysis,the main controlling factors of shale oil enrichment in the Lower Permian Fengcheng Formation in the Mahu Sag of the Junggar Basin are clarified,and a shale oil enrichment model is *** results show that the enrichment of shale oil in the Fengcheng Formation in the Mahu Sag is controlled by the organic abundance,organic type,reservoir capacity and the amount of migration hydrocarbon in *** abundance of organic matter provides the material basis for shale oil enrichment,and the shales containing typesⅠandⅡorganic matters have good oil *** reservoir capacity controls shale oil *** are the main space for shale oil enrichment in the Fengcheng Formation,and pore size and fracture scale directly control the degree of shale oil *** migration of hydrocarbons in shale affects shale oil *** shale that has expelled hydrocarbons has poor oil content,while the shale that has received hydrocarbons migrated from other strata has good oil *** reflect the hydrocarbon generation and storage capacity *** laminated felsic shale,laminated lime-dolomitic shale and thick-layered felsic shale have good oil content,and they are favorable lithofacies for shale oil *** the control of these factors,relative migration of hydrocarbons occurred within the Fengcheng shale,which leads to the the difference in the enrichment process of shale ***,the enrichment mode of shale oil in Fengcheng Formation is established as"in-situ enrichment"and"migration enrichment".By superimposing favorable lithofacies and main controlling factors of enrichment,the sweet spot of shale oil in the Fengcheng Formation can be selected which has great significance for the exploration and development of shale oil.

关键词： Junggar Basin Mahu Sag Permian Fengcheng Formation shale oil enrichment controlling factors enrichment model lithofacies

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Morphological and Molecular Data Revealed One New Species of the Short-legged Toads Brachytarsophrys Tian and Hu,1983(Anura,Megophryidae)from Yunnan,China

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Asian Herpetological Research 2024年第1期15卷 22-30页

作者： Yanhong HE renda AI Junkai huang Xianqi LI Xiaolong LIU Junlin LAN Jinmin CHEN Zhiyong YUAN Key Laboratory of Freshwater Fish Reproduction and Development(Ministry of Education) School of Life SciencesSouthwest UniversityChongqing 400715China Key Laboratory for Conserving Wildlife with Small Populations in Yunnan Southwest Forestry UniversityKunming 650224YunnanChina Guangxi Key Laboratory of Rare and Endangered Animal Ecology Guangxi Normal UniversityGuilin 541004GuangxiChina Wenshan National Nature Reserve of Yunnan Province Wenshan 663099YunnanChina Anhui Provincial Key Laboratory of the Conservation and Exploitation of Biological Resources College of Life SciencesAnhui Normal UniversityWuhu 241000AnhuiChina

A new species of the genus Brachytarsophrys,named Brachytarsophrys wenshanensis ***.,has been identified in southeastern Yunnan,*** new species can be readily distinguished from other known congeners by both morphological criterion and molecular analysis of three mitochondrial gene segments:16S,COI,and *** classification is based on the following morphological characters:(1)medium body size(SVL 83.8–85.1 mm in two adult males);(2)enormous head,with head width nearly 1.2 times the length;(3)tongue pyriform,feebly notched;(4)non-meeting heels;(5)male lacking nuptial pad;(6)tibiotarsal articulation reaching angle of mouth when hindlimbs are extended forward alongside the body;(7)absence of outer metatarsal tubercle,inner metatarsal tubercle elliptic and approximately equal to first toe;(8)rudimentary toe webbing,webbing formula:Ⅰ(2–)–(2^(++))Ⅱ(2^(–))–(3^(++))Ⅲ(2^(½))–(4)Ⅳ(4^(+))–(2^(⅔))V;(9)lateral fringes narrow;(10)dermal ridge or glandular fold on dorsum absent;(11)pectoral glands distinct and irregular,femoral gland *** work increases the number of species within the genus Brachytarsophrys to 9.

关键词： amphibians molecular phylogeny species diversity taxonomy

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Investigation of Oil Content in Lacustrine Shale-Oil Systems:Insights from Two Different Pyrolysis

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Journal of Earth Science 2023年

作者： Yuping Wu Chenglin Liu Fujie Jiang Tao Hu Chenxi Zhang Jiahao Lü renda huang Meiling Hu Guanyun Wu Rizwan Sarwar Awan School of Resources and Environmental Engineering Hefei University of Technology Xi'an Shiyou University State Key Laboratory of Petroleum Resources and Prospecting China University of Petroleum College of Geosciences China University of Petroleum

This research has investigated the oil content of lacustrine shale-oil systems from the Junggar Basin. Twenty-eight samples are used for different pyrolysis experiments to study the characteristics of shale oil occurrence and the difference between various evaluation methods. Additionally,the factors affecting the physical states of shale oil are discussed. Compared with the standard RockEval, the two-step pyrolysis and multi-step pyrolysis can eliminate the influence of the carryover ***, these two types of pyrolysis are used to obtain the total, free, and adsorbed oil yield of the shale. The results demonstrate that the total oil yield acquired by multi-step pyrolysis is quite similar to that obtained by two-step pyrolysis. Both of them can prevent the retained oil yield from being underestimated by more than 50%. However, the free oil yield obtained by multi-step pyrolysis is significantly higher than that obtained by two-step pyrolysis. The multi-step pyrolysis can easily exaggerate the real free oil yield in resource evaluation. Therefore, this article suggests using the two-step pyrolysis to evaluate the characteristics of petroleum in shales. Furthermore, the amount of hydrocarbons within shales is related to organic matter properties. The higher the organic matter richness, the higher the total/adsorbed oil yield within the shale before reaching the adsorption saturation. The better the kerogen type, the higher the amount of liquid hydrocarbons within shales. As the thermal evolution of shales increases, the free oil proportion and the mobility of petroleum increase. This study compared different pyrolysis methods, which provided new insight for obtaining the oil content of shales, a key parameter of shale oil resource evaluation.

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夏热冬冷地区外墙保温材料厚度的经济性分析

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新型建筑材料 2017年第9期44卷 105-110页

作者：黄仁达李丽吴会军李铮伟广州大学土木工程学院广东广州510006 广州大学建筑与城市规划学院广东广州510006 同济大学机械与能源工程学院上海200092

以夏热冬冷的上海地区为例,建立了计算墙体保温材料经济厚度的数学模型,分析了不同保温材料的经济性及其对不同燃料能源产生的温室气体排放量的影响。结果表明,随着保温材料厚度的增加,总投资费用先减小后增大,存在使总投资费用最低的... 详细信息

以夏热冬冷的上海地区为例,建立了计算墙体保温材料经济厚度的数学模型,分析了不同保温材料的经济性及其对不同燃料能源产生的温室气体排放量的影响。结果表明,随着保温材料厚度的增加,总投资费用先减小后增大,存在使总投资费用最低的经济保温厚度;当电作为能源时,XPS、EPS、聚氨酯泡沫、玻璃纤维棉及气凝胶保温材料的经济保温厚度分别为63、81、48、54、9mm,新型气凝胶保温材料具有最小的经济厚度。

关键词：建筑节能保温材料经济厚度气凝胶

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二氧化硅气凝胶复合材料热导率优化研究进展

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无机盐工业 2017年第10期49卷 6-11页

作者：黄仁达吴会军何石泉杨建明广州大学土木工程学院广东广州510006 广州大学建筑节能研究院

二氧化硅气凝胶复合材料由于具有良好的力学和隔热性能,在建筑、航空和其他工业领域展现出良好的节能应用前景。从增强材料的几何特征、含量、排列方式等方面概述了二氧化硅气凝胶复合材料热导率的规律,综述了二氧化硅气凝胶复合材料热... 详细信息

二氧化硅气凝胶复合材料由于具有良好的力学和隔热性能,在建筑、航空和其他工业领域展现出良好的节能应用前景。从增强材料的几何特征、含量、排列方式等方面概述了二氧化硅气凝胶复合材料热导率的规律,综述了二氧化硅气凝胶复合材料热导率的实验和理论优化研究进展,分析了现阶段实验和理论模型优化二氧化硅气凝胶复合材料热导率存在的问题,并提出了优化二氧化硅气凝胶复合材料热导率的方法,为制备高隔热性能的二氧化硅气凝胶复合材料提供理论指导。

关键词： SiO2气凝胶增强材料复合材料

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国际海峡通行制度综合法理分析

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太平洋学报 2024年第3期32卷 90-102页

作者：李人达中共海南省委党校海南海口571126

作为全球海洋的关键节点,国际海峡既是我国冲出岛链封锁的必经之地,也是关系21世纪海上丝绸之路畅通与否的重要通道。依据《联合国海洋法公约》相关规定,第一,针对某些存在长期有效的专门公约的特定海峡,其通行制度予以保留,如土耳其海... 详细信息

作为全球海洋的关键节点,国际海峡既是我国冲出岛链封锁的必经之地,也是关系21世纪海上丝绸之路畅通与否的重要通道。依据《联合国海洋法公约》相关规定,第一,针对某些存在长期有效的专门公约的特定海峡,其通行制度予以保留,如土耳其海峡适用1936年《蒙特勒公约》、麦哲伦海峡适用智利与阿根廷1881年《边界条约》、丹麦海峡适用1857年《哥本哈根条约》;第二,在用于国际航行的非领海海峡,他国船舶、飞机有权在其中间的专属经济区或公海海域适用航行飞越自由,如宗谷海峡、津轻海峡、宫古海峡、巴士海峡等咽喉要道;第三,在用于国际航行的领海海峡,他国船舶、飞机有权在其领海海域适用过境通行制度,如吐噶喇海峡、马六甲海峡、曼德海峡、多佛尔海峡等咽喉要道;第四,在摩西拿例外海峡和死巷例外海峡,他国船舶、飞机有权适用不应予以停止的无害通过制度,如摩西拿海峡、卡尔玛海峡、蒂朗海峡、首港航道等咽喉要道。综上,他国船舶、飞机在相关海峡的相关海域的通行权的享有,依靠的是国际法规则,并非海峡沿岸国的恩惠,也非其他海权大国的好意施惠。我国船舶、飞机有权适用国际海峡上述四类通行制度沟通全球。同时国际社会应加强合作,保障国际海峡畅通,促进海运发展,增进人类福祉,共建海洋命运共同体。

关键词：《联合国海洋法公约》用于国际航行的海峡航行飞越自由过境通行无害通过

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准噶尔盆地玛湖凹陷风城组页岩油地质特征与分级评价

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石油学报 2022年第7期43卷 899-911页

作者：姜福杰黄任达胡涛吕佳豪黄立良姜振学胡美玲张晨曦吴冠昀吴育平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 中国石油新疆油田公司勘探开发研究院新疆克拉玛依834000

准噶尔盆地玛湖凹陷风城组页岩油资源丰富,但勘探程度较低,对页岩油资源的潜力评价和资源禀赋差异缺少系统研究,制约着勘探部署和有利区优选。以玛页1井为例,综合钻井、测井、岩心和岩石矿物组成、有机地球化学特征、储集物性、含油性... 详细信息

准噶尔盆地玛湖凹陷风城组页岩油资源丰富,但勘探程度较低,对页岩油资源的潜力评价和资源禀赋差异缺少系统研究,制约着勘探部署和有利区优选。以玛页1井为例,综合钻井、测井、岩心和岩石矿物组成、有机地球化学特征、储集物性、含油性等地质资料,系统分析了风城组页岩油地质特征,探讨了页岩油甜点评价标准。结果表明,风城组页岩主要由长英质和碳酸盐矿物组成,黄铁矿发育,黏土矿物较少。风城组页岩主要发育Ⅱ_(2)型干酪根,总有机碳(TOC)含量分布在0.08%~2.33%,多处于成熟阶段。页岩储集空间类型主要为狭缝状孔隙,孔隙分选性较好;总体上,宏孔较发育,孔隙体积分布在0.001~0.008 cm^(3)/g,平均为0.003 cm^(3)/g。风城组页岩内部烃类聚集,游离烃含量为0.52~13.31 mg/g,吸附烃含量为0.16~5.17 mg/g。明确了页岩岩相、微观孔隙特征、页岩油赋存形式是风城组页岩含油性的主控因素,在此基础上建立了风城组页岩油甜点的划分标准,在玛页1井风城组优选出8个最有利的页岩油勘探层段,有利储集岩相以长英质页岩为主。

关键词：页岩油含油性甜点分级评价风城组玛湖凹陷

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