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Geological constraints of giant and medium-sized gas fields in Kuqa Depression

Chinese Science Bulletin 2002年第S1期47卷 47-54页

作者： JIA Chengzao GU Jiayu zhang guangya PetroChina Company Limited Beijing 100724China Research Institute of Petroleum Exploration and Development Petro-ChinaBeijing 100083China

There is a gas-rich and well-charged petroleumsystem in the Kuqa Depression where Triassic and Jurassicsource rocks play important roles. Distributed in an area ofmore than 10000 km and with a thickness of up to 1000 m,they are composed of dark mudstones, carbonaceous mud-stones and coal seams containing 6%, 40% and 90% of TOC,respectively, and are mainly the humic organic matter. Ashigh-quality regional cap rocks, the Neogene and Eogenegypsum rocks and gypseous mudstones matched well withthe underlying Neogene and Cretaceous-Eogene *** have formed the most favorable reservoir-seal assem-blages in the Kuqa Depression. Also the Jurassic sandstonesand mudstones formed another favorable reservoir-seal as-semblage. The traps are shaped late in the fold-thrust belt,mainly fixed in the Tertiary-Quaternary, where ten structurestyles have been distinguished. These traps spread as a zonein N-S, are scattered like a segmental line in W-E and showtier-styled vertically. The best traps are gypsum-salt coveredfault-bend anticlines related to the passive roof duplex. Thispetroleum system is characterized by late accumulation. Inthe early Himalayan Movement, mainly gas condensate andoil accumulated and were distributed in the outer circularregion of the kitchen; whereas in the middle and late Hima-layan the gas accumulations mainly formed and were dis-tributed in the inner circular region near the kitchen. Theoverpressure of gas pools is common and is formed by sealcapacity of thick gypsum layers, extensive tectonic compres-sion and large uplift. The well-preserved anticline traps un-derlying the high-quality regional cap rocks of the Tertiarygypsum rocks and gypseous mudstones are the main targetsfor the discovery of giant and medium-sized gas fields. Aboveconclusions are important for the petroleum geology theoryand the exploration of the fold-thrust belt in foreland basinsin central and western China.

关键词： coal-bearing source rock fault-related fold oil and gas pool giant and medium-sized gas field Kuqa Depression.

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Main controlling factors for hydrocarbon reservoir formation and petroleum distribution in Cratonic Area of Tarim Basin

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Chinese Science Bulletin 2002年第S1期47卷 139-146页

作者： zhang guangya WANG Hongjun LI Honghui Research Institute of Petroleum Exploration and Development PetroChinaBeijing 100083China

The Cratonic Area of the Tarim Basin is lo-cated in the central part of the basin, developing primarilywith Cambrian marine source rocks and secondly Middle toUpper Ordovician marine and Carboniferous-Permiantransitional facies source rocks. The source rocks werematured in the changeable period and space, formingmultiple hydrocarbon generating centers during the *** Cratonic Area experienced multiple tectonic orogenies,forming several palaeouplifts. The matching conditionbetween effective hydrocarbon generating centers and thepalaeouplifts in various periods is the main control factor forthe formation and distribution of hydrocarbon *** palaeouplifts have experienced multiple hydrocar-bon-filling phases, several periods of modifications and evenbreakdown. The palaeouplifts and the adjacent slopesaround the effective hydrocarbon generating center composethe most favorable places for hydrocarbon *** hydrocarbon phase is related with the evolution of thehydrocarbon generating center. In the Tarim Basin’sCratonic Area, reservoirs were mostly formed during lateHercynian. The originally formed hydrocarbon reservoirswhich are adjacent to source kitchens and in the goodpreservation condition are the most favorable prospectingtargets. Hydrocarbon is richly accumulated under theregional caprock, surrounding the faulted trends, and overand below the unconformity surfaces. Reservoirs in theCarboniferous sandstone, Ordovician karstic weatheredcrust and carbonate rock inside the buried hill compose themain intervals for hydrocarbon accumulation. Carboni-ferous and Silurian sandstone pinchout reservoirs andcarbonate lithologic reservoirs with rich fractures and poresare the main targets for further prospecting.

关键词： Tarim cratonic basin hydrocarbon reservoir source rock palaeouplift.

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Reservoir Quality and Controlling Mechanism of the Upper Paleogene Fine-Grained Sandstones in Lacustrine Basin in the Hinterlands of Northern Qaidam Basin,NW China

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Journal of Earth Science 2023年第3期34卷 806-823页

作者： Lei Gong Xianzhi Gao Futao Qu Yongshu zhang guangya zhang Jun Zhu College of Geosciences China University of PetroleumBeijing 102249China State Key Laboratory of Petroleum Resources and Prospecting China University of PetroleumBeijing 102249China Exploration&Development Research Institute of Qinghai Oilfield Company PetroChinaDunhuang 736202China Research Institute of Petroleum Exploration&Development PetroChinaBeijing 100083China

The Upper Paleogene lacustrine fine-grained sandstones in the hinterlands of the northern Qaidam Basin mainly contain two sweet spot ***/fault,microfacies,petrology,pore features,diagenesis,etc.,were innovatively combined to confirm the controlling factors on the reservoir quality of shallow delta-lacustrine fine-grained *** diagenesis of the original lake/surface/meteoric freshwater and acidic fluids related to the faults and unconformity occurred in an open geochemical *** analysis shows that the Upper Paleogene fine-grained sandstones were primarily formed in the early diagenetic B substage to the middle diagenetic A *** quality was controlled by fault systems,microfacies,burial-thermal history,diagenesis,hydrocarbon charging events(HCE),and abnormally high *** and deep double fault systems are the pathways for fluid flow and hydrocarbon *** developed in the high energy settings such as overwater(ODC)and underwater distributary channels(UDC)provide the material foundation for *** burial depth(3000-4000 m),moderate geothermal field(2.7-3.2℃/100 m),and late HCE(later than E3)represent the important factors to protect and improve pore *** freshwater with high concentrations of CO_(2)and organic acids from thermal decarboxylation are the main fluids leading to the dissolution and reformation of feldspar,rock fragments,calcite and anhydrite *** high pressure caused by the undercompaction in a large set of argillaceous rocks is the key to form high-quality *** pressure zones reduced and inhibited the damage of compaction and quartz overgrowth to reservoir pores,allowing them to be better preserved.A reservoir quality evaluation model with bidirectional migration pathways,rich in clay minerals,poor in cements,superimposed dissolution and abnormally high pressure was proposed for the ODC/UDC finegrained *** model w

关键词： sandstone reservoir quality diagenetic system genetic mechanism petroleum research Upper Paleogene northern Qaidam Basin

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Expression profiles of circulating tRNA-derived small RNAs and their potential role in diabetes

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BIOCELL 2023年第7期47卷 1645-1650页

作者： JING JIN XIE LI TING QIU LEI SONG YUANYUE CUI guangya zhang SHU LI WENCHENG ZHAO Department of Ophthalmology Shanghai Children’s Medical CenterSchool of MedicineShanghai Jiao Tong UniversityShanghai200127China Department of Ophthalmology Shanghai General HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghai200080China Department of Endocrinology Shanghai Ninth People’s HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghai200011China Department of Cardiology Shanghai Sixth People’s HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghai200233China Department of Medical Oncology Shanghai Pulmonary HospitalSchool of MedicineTongji UniversityShanghai200433China

This work aimed to reveal the expression profiles of tRNA-derived small RNAs(tsRNAs)in ***:Thirty-five diabetes patients and thirty-three controls were *** serum samples of 4 diabetes patients and 4 controls were subjected to tRF and tiRNA polymerase chain reaction(PCR)Array *** quantitative PCR(qPCR)validation was performed on all the *** analyses were conducted to explore their ***:We found 115 tsRNAs that significantly differed between the two groups.3′tiR-080-ProTGG(mt)was selected for further qPCR validation in all participants,and it was significantly decreased in diabetes patients compared with *** analysis indicated that 3′tiR-080-ProTGG(mt)may play regulatory roles via the cyclic adenosine monophosphate(cAMP)signaling pathway in the pathogenesis and progression of ***:Hence,we report that circulating tsRNAs are dysregulated that could be involved in the pathogenesis of diabetes.

关键词： Diabetes Noncoding RNAs tRF tiRNA

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Geologic Characteristics of Volcanic Hydrocarbon Reservoirs and Exploration Directions in China

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Acta Geologica Sinica(English Edition) 2010年第1期84卷 194-205页

作者： ZOU Caineng ZHU Rukai ZHAO Wenzhi JIA Chengzao zhang guangya YUAN Xuanjun ZHAO Xia WEN Baihong State Key Laboratory of Enhanced Oil Recovery. （Research Institute of Petroleum Exploration and Development） Beijing 100083

Volcanic rocks are distributed widely in China, which are important exploration targets. By analyzing many discovered volcanic hydrocarbon reservoirs all over the world, the authors summarized the geologic characteristics of the formation of volcanic hydrocarbon reservoirs in China, and gave further exploration directions and advices. （1） There are mainly Carboniferous-Permian, Jurassic-Cretaceous, Paleogene-Neogene volcanic rocks in oil- and gas-bearing basins in China, which are mainly distributed in the Junggar Basin, Songliao Basin, Bohai Bay Basin, etc. There are mainly intermediate rocks and acidic rocks in east China, and intermediate rocks and basic rocks in west China. They primarily develop in intracontinentai rift settings and island arc environments. （2） Porefissure reservoirs are distributed widely in basins, which are volcanic rocks mainly in explosive and effusive facies. （3） Volcanic hydrocarbon reservoirs are chiefly near-source lithostratigraphic hydrocarbon reservoirs, and the oil and gas accumulation is predominantly controlled by lithotypes, faults and structural positions. （4） Deep-seated oil and gas reservoirs in the Songliao Basin and Carboniferous volcanic hydrocarbon reservoirs in the Junggar Basin are potential giant volcanic gas provinces, the volcanic hydrocarbon reservoirs in the Bohai Bay Basin and Santanghu Basin are favorable for oil and gas reserves increase, and volcanic rocks in the Turpan Basin, Sichuan Basin, Tarim Basin have exploration potentiality. （5） The technology series of oil and gas exploration in volcanic rocks have been preliminarily formed.

关键词： volcanic rock geologic characteristics of volcanic hydrocarbon reservoirs lithostratigraphic hydrocarbon reservoirs exploration direction

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Major transgression during Late Cretaceous constrained by basin sediments in northern Africa： implication for global rise in sea level

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Frontiers of Structural and Civil Engineering 2017年第4期11卷 740-750页

作者： Kaixuan AN Hanlin CHEN Xiubin LIN Fang WANG Shufeng YANG Zhixin WEN Zhaoming WANG guangya zhang Xiaoguang TONG School of Earth Sciences Zhejiang University Hangzhou 310027 China Research Center for Structures in Oil- and Gas-Bearing Basins Ministry of Education Hangzhou 310027 China Research Institute of Petroleum Exploration and Development PetroChina Co. Ltd Beijing 100083 China China National Oil and Gas Exploration and Development Corporation Beijing 100083 China

The global rise in sea level during the Late Cretaceous has been an issue under discussion by the international geological community. Despite the signifi- cance, its impact on the deposition of continental basins is not well known. This paper presents the systematic review on stratigraphy and sedimentary facies compiled from 22 continental basins in northern Africa. The results indicate that the region was dominated by sediments of continental facies during Early Cretaceous, which were replaced by deposits of marine facies in Late Cretaceous. The spatio- temporal distribution of sedimentary facies suggests marine facies deposition reached as far south as Taou- deni-Iullemmeden-Chad-A1 Kufra-Upper Egypt basins during Turonian to Campanian. These results indicate that northern Africa underwent significant transgression during Late Cretaceous reaching its peak during Turonian to Coniacian. This significant transgression has been attributed to the global high sea-level during this time. Previous studies show that global rise in sea level in Late Cretaceous may have been driven by an increase in the volume of ocean water （attributed to high C02 concentra- tion and subsequently warm climate） and a decrease in the volume of the ocean basin （attributed to rapid production of oceanic crust and seamounts）. Tectonic mechanism of rapid production of oceanic crust and seamounts could play a fimdamental role in driving the global rise in sea level and subsequent transgression in northern Africa during Late Cretaceous.

关键词： global sea-level changes Late Cretaceous,transgression sedimentary facies northern Africa

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Tectonic and Geodynamic Setting of Oil and Gas Basins in China

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Journal of Earth Science 1995年第2期14卷 30-37页

作者： Chen Fajing Wang Xinwen zhang guangya Cao Shoulian Luo ChuanrongDepartment of Geology and Energy Resources, China University of Geosciences, Beijing 100083

About 26 sedimentary basins bearing oil and gas are developed in China. They can be classified into two main types . extensional basins and foreland basins . The former are chiefly distributed in the eastern part and the latter in the central and northwestern parts of the country . The present paper discusses the structural characteristics of these basins . including subsidence history , thermal history and structural style and kinematics . Combined with tectonic setting analysis of geophysical data and eruptive rocks , the geodynamic setting of the basins is established , and the formation mechanism of the basins is deduced to have been related to the subduction of the Izanagi and west Pacific plates and the closing of the Tethys ocean .

关键词： extensional basin foreland basin geodynamic setting .

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基于氨基酸组成分布的嗜热和嗜冷蛋白随机森林分类模型

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生物工程学报 2008年第2期24卷 302-308页

作者：张光亚方柏山华侨大学工业生物技术福建省高校重点实验室泉州362021

文献报道采用氨基酸组成分布提取特征值能有效提高预测分类精度,本文采用该方法提取特征值,使用一种新的组合分类器——随机森林,从蛋白质一级结构对嗜热和嗜冷蛋白进行分类。通过10倍交叉验证和独立样本测试两种方法检测,结果表明:当... 详细信息

文献报道采用氨基酸组成分布提取特征值能有效提高预测分类精度,本文采用该方法提取特征值,使用一种新的组合分类器——随机森林,从蛋白质一级结构对嗜热和嗜冷蛋白进行分类。通过10倍交叉验证和独立样本测试两种方法检测,结果表明:当分段数量为1时,其精度最优,分别为92.9%和90.2%,暗示使用基于氨基酸组成分布提取特征值在该算法中并不能有效提高识别精度,这与报道结果不符,而该提取方法在SVM中却能适当提高识别精度;当引入6个新变量后,其精度分别提高到93.2%和92.2%,ROC曲线下面积分别为0.9771和0.9696,优于其它组合分类器。

关键词：随机森林氨基酸组成分布嗜热和嗜冷蛋白 ROC曲线

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氨基酸嗜盐不对称指数与其理化性质的相关性

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计算机与应用化学 2012年第5期29卷 545-548页

作者：张光亚华侨大学生物工程与技术系福建厦门361021

了解嗜盐蛋白氨基酸使用的偏好及该偏好与其理化性质之间的联系对探索嗜盐蛋白构效关系具有重要意义。本文选取极端嗜盐细菌Salinibacter ruber和非嗜盐菌Pelodictyon luteolum中362对同源蛋白,统计了52102个氨基酸突变位点,以此计算氨... 详细信息

了解嗜盐蛋白氨基酸使用的偏好及该偏好与其理化性质之间的联系对探索嗜盐蛋白构效关系具有重要意义。本文选取极端嗜盐细菌Salinibacter ruber和非嗜盐菌Pelodictyon luteolum中362对同源蛋白,统计了52102个氨基酸突变位点,以此计算氨基酸的嗜盐不对称指数(HAI),并与243个理化性质进行相关性分析。结果表明:天冬氨酸的嗜盐性能最强,而异亮氨酸和赖氨酸最弱;243个理化性质中有16个同HAI存在显著相关性,其中5个呈正相关;氨基酸的亲疏水性及β折叠的倾向性是影响HAI值的两种最重要的理化性质。本文提出的氨基酸嗜盐不对称指数为了解嗜盐蛋白稳定性机制提供了新视角。

关键词：嗜盐蛋白 β折叠氨基酸亲疏水性,嗜盐不对称指数,相关性分析

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Evolution of lithofacies and paleogeography and hydrocarbon distribution worldwide(Ⅱ)

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Petroleum Exploration and Development 2019年第5期46卷 896-918页

作者： zhang guangya TONG Xiaoguang XIN Renchen WEN Zhixin MA Feng HUANG Tongfei WANG Zhaoming YU Bingsong LI Yuejun CHEN Hanlin LIU Xiaobing LIU Zuodong Research Institute of Petroleum Exploration&Development PetroChinaBeijing 100083China China National Oil and Gas Exploration and Development Company Ltd. Beijing 100034China China University of Geosciences Beijing 100083China Institute of Geology and Geophysics Chinese Academy of SciencesBeijing 100029China Zhejiang University Hangzhou 310058China

Based on the compilation and analysis of the lithofacies and paleogeography distribution maps at present and paleoplate locations during six key geological periods of the Mesozoic and Cenozoic,the lithofacies and paleogeography features and their development laws were *** on our previous research results on lithofacies and paleogeography from Precambrian to Paleozoic,we systematically studied the features and evolution laws of global lithofacies and paleogeography from the Precambrian and their effects on the formation of source rocks,reservoirs,cap rocks and the distribution of oil and gas *** results show that since Precambrian,the distribution areas of uplift erosion and terrestrial clastic deposition tended to increase gradually,and increased significantly during the period of continental *** scale of coastal and shallow marine facies area had three distinct cycles,namely,from Precambrian to Devonian,from Carboniferous to Triassic,and from Jurassic to ***,the development of shallow carbonate platform also showed three cycles;the lacustrine facies onshore was relatively developed in Mesozoic and Cenozoic;the sabkha was mainly developed in the Devonian,Permian and *** Cretaceous is the most important source rock layers in the world,followed by the Jurassic and Paleogene source rocks;the clastic reservoirs have more oil and gas than the carbonate reservoirs;the basins with shale caprocks have the widest distribution,the most abundant reserves of oil and gas,and the evaporite caprocks have the strongest sealing capacity,which can seal some huge oil and gas fields.

关键词： global lithofacies and paleogeography plate tectonics tectonic evolution source rocks reservoir caprock oil and gas distribution

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