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Sedimentary hydrodynamic study of sand bodies in the upper subsection of the 4th Member of the Paleogene Shahejie Formation in the eastern Dongying Depression, China

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Petroleum Science 2014年第2期11卷 189-199页

作者： Jiang Zaixing Liang Shuyi zhang yuanfu zhang Shanwen Qin Lanzhi Wei Xiaojie School of Energy Resources China University of Geosciences Shengli Oilfield Branch Corporation SINOPEC CNOOC China Limited–Shanghai

Petroleum is produced from a beach-bar sand reservoir in the upper subsection of the 4th member of the Paleogene Shahejie Formation （Es4s） in the eastern Dongying Depression,penetrated by many wells in the Guangli-Qingnan area and this subsection still has further exploration *** drilling and logging data,we analyzed the sand body types,emphasizing the sedimentary characteristics of the beach-bar sand *** these data with the concepts of lacustrine and oceanic hydrodynamics,we explain the formation and distribution of the beach-bar sands in the eastern Dongying *** connectivity between beach-bar sand bodies within each individual hydrodynamic zone is better than that between sand bodies in any two adjacent *** tempestite sand bodies developed in this area are characterized by typical storm deposits and are located at the bottoms of the beachbar sand *** grade upward to normal shore and shallow-lacustrine beaches and *** also propose a new simple method to estimate the paleo-water depth using the thicknesses of the bar sand bodies in parasequences combined with the principle of hydrodynamic *** on the distribution of the beach-bar sands in parasequence set 3,we infer that the paleo-wind direction was from the north with an average paleo-wind force of 6 when the major beach-bar sand bodies formed.

关键词： Beach-bar sedimentary hydrodynamic zone paleo-water depth paleo-wind force

Comparative Analysis of Sequence Characteristics among Different Superimposed Stages of the Chelif Basin,Algeria

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Acta Geologica Sinica(English Edition) 2009年第6期83卷 1041-1051页

作者： zhang yuanfu JIANG Zaixing WANG Yue BAO Dandan School of Energy China University of Geosciences Beijing 100083 China

Superimposed basins were investigated with respect to tectonic evolution, sediment deposition and petroleum characteristics within a single superposition stage generally. The comparative study was seldom seen. Sequence characteristics were compared for two different superimposed stages - an expanding rifting stage and a depression-foreland transition stage - in the Chelif Basin during the Miocene in this paper. A model and mechanism for sequence evolution of superimposed basins in different dynamic situations are discussed with respect to sequence similarities and differences. The compared characters include sequence thickness, sequence boundaries and system tracts, as well as sediment deposition within sequences and sequence development patterns. Finally, some typical features of sequence development concomitant with changes of superimposed stages in the Chelif Basin are discussed.

关键词： superimposed basin sequence characteristics sediment deposition structural dynamics,petroleum accumulation

Multi-source genesis of continental carbonate-rich fine-grained sedimentary rocks and hydrocarbon sweet spots

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Petroleum Exploration and Development 2021年第1期48卷 30-42页

作者： JIANG Zaixing KONG Xiangxin YANG Yepeng zhang Jianguo zhang yuanfu WANG Li YUAN Xiaodong School of Energy Resources China University of Geosciences(Beijing)Beijing 100083China

This paper systematically discusses the multiple source characteristics and formation mechanisms of carbonate-rich fine-grained sedimentary rocks through the analysis of material source and rock *** hydrocarbon accumulation characteristics of carbonate-rich fine-grained sedimentary rocks are also *** results show that the main reason for the enrichment of fine-grained carbonate materials in rift lake basins was the supply of multiple material sources,including terrestrial material input,formation of intrabasinal authigenic carbonate,volcanic-hydrothermal material feeding and mixed *** development of carbonate bedrock in the provenance area controlled the filling scale of carbonate materials in rift lake *** volcanic-hydrothermal activity might provide an alkaline fluid to the lake basins to strengthen the material supply for the formation of carbonate *** carbonate crystals induced by biological processes were the main source of long-term accumulation of fine-grained carbonate materials in the lake ***-rich fine-grained sedimentary rocks with multiple features were formed through the interaction of physical,biochemical and chemical processes during the deposition and post-deposition *** source and sedimentary origin of the fine-grained carbonate rock controlled the hydrocarbon accumulation in *** the multi-source system,the types of"sweet spots"of continental shale oil and gas include endogenous type,terrigenous type,volcanic-hydrothermal type and mixed source type.

关键词： carbonate-rich fine-grained sedimentary rocks rift lake basins multiple sources hydrocarbon accumulation sweet spot of continental shale oil and gas

Noninvasive Surface Detection of Papillary Thyroid Carcinoma by Fourier Transform Infrared Spectroscopy

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Chemical Research in Chinese Universities 2015年第2期31卷 198-202页

作者： zhang Weitao TIAN Peirong ZHU Qing zhang yuanfu CUI Long XU Zhi Department of General Surgery Peking University Third Hospital Beijing 100191 P R. China College of Chemistry and Molecular Engineering Peking University Beijing 100871 P R. China

Previously Fourier transform infrared（FTIR） spectroscopy has been applied to detecting thyroid cancer during operations and to discriminating cervical metastatic ones from non-metastatic lymph nodes. This study explored the possibility of establishing a sensitive, accurate and noninvasive screen or diagnosis by preoperative FTIR spectroscopy. 111 patients undergone a thyroid operation and 50 healthy volunteers were enrolled in the study. The FTIR spectra were obtained by two mid-infrared optical fibers with an attenuated total reflectance（ATR） probe closely contacting the subjects＇ skin on the thyroid nodules. The FTIR spectra obtained from normal thyroid, nodular goiter（NG） and papillary thyroid carcinoma（PTC） patients were compared. A Fisher＇s discriminant analysis was created based on these data. There were 41 PTC patients and 70 NG patients according to their histopathological examinations. A total of 23（of 39） parameters were statistically different among the three groups（P〈0.05）. The Fi300 and F1080 parameters were significantly different between the three groups. In total, 9 out of 39 FTIR parameters were selected as independent factors by the Wilks＇ lambda stepwise discriminant analysis. The discrimination accuracy of papillary thyroid carcinoma in the three groups was 88.8%. Surface detection of PTC by FTIR spectroscopy is feasible. FTIR spectroscopy can be used for rapid and noninvasive PTC screen and auxiliary diagnosis.

关键词： Noninvasive detection Papillary thyroid carcinoma Fourier transform infrared(FTIR) spectroscopy Fisher's discriminant analysis

An Improved Method of Laser Particle Size Analysis and Its Applications in Identification of Lacustrine Tempestite and Beach Bar：An Example from the Dongying Depression

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Journal of Earth Science 2017年第6期28卷 1145-1152页

作者： yuanfu zhang Chenlin Hu Xingmou Wang Min Wang Zaixing Jiang Junjie Li School of Energy Resources China University of Geosciences Beijing 100083 China School of Earth Sciences and Resources China University of Geosciences Beijing 100083 China SINOPEC Shengli Geophysical Research Institute Dongying 257022 China PetroChina Research Institute of Petroleum Exploration and Development Beijing 100083 China The First Oil Production Plant SINOPEC Henan Oilfield Nanyang 473132 China

Grain size analysis is a common method in the study of sedimentology. For the consolidated sedimentary rocks, the traditional methods are rock slice observation and image analysis. In recent years, laser particle size analyzer is used widely in particle size analysis of sedimentary rock. Unlike the pretreatment of loose samples, the rock samples must be crushed, added acid to wipe out cement, and washed. However, in the step of washing, most of the fines component（less than 63 μm） in the suspended state should be inevitably lost. It will significantly affect the accuracy of particle size analysis, especially for siltstone. This paper presents a siltstone sample pretreatment method which core step is washing acid by centrifuge. Compared with traditional decantation method, the results show that the median particle size reduced 33.2 μm on average. Compared with the precipitation method which is commonly used for handling loose samples, the change of solid-liquid separation time is from 12 h to 10 min, while the average reduction of median particle size is about 15 μm. The grain size value corresponded to the cumulative volume of 10%/90% reduced 2.5 μm/20.3 μm on average. The percentage of the clay component less than 2 μm increased 2.88% on average. The fine particle（2–4 μm） and silt component（4–63 μm） increased 1.71% and 5.56% on average. Based on this method, two kinds of similar lacustrine siltstone were analyzed. They are tempestite and beach bar which are difficult to identify in the Lijin sub-depression, Dongying depression, Shengli oilfield, China. The final grain-size probability plot of tempestite is the type of “one saltation component and three suspension components”. The content of suspension components can reach to 80%–90%. The beach bar is the type of “one saltation component and two suspension components”. The content of suspension components can reach to 40%–45%. They both have the characteristics of high slope which means well sorting. But they can be

关键词： siltstone grain size analysis sample pretreatment washing acid centrifuge

Flume Tank Simulation on Depositional Mechanism and Controlling Factors of Beach-Bar Reservoirs

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Journal of Earth Science 2017年第6期28卷 1153-1162页

作者： Chenlin Hu yuanfu zhang Deyong Feng Min Wang Zaixing Jiang Chaowei Jiao School of Energy Resources China University of Geosciences Beijing 100083 China Institute of Earth Sciences China University of Geosciences Beijing 100083 China SINOPEC Shengli Geophysical Research Institute Dongying 257022 China PetroChina Research Institute of Petroleum Exploration and Development Beijing 100083 China

The beach-bar reservoir has become an important exploration target in China, but its depositional mechanism and controlling factors have not yet been fully modeled. They have become an inhibitory factor for the exploration and development of beach-bar reservoirs. The depositional mechanism of beach-bars and their controlling factors have been studied by means of a flume experiment including seven runs under controlled boundary conditions which were the water level（Run 1, Run 2 and Run 3）, wave parameters（Run 1, Run 4 and Run 5） and initial slope（Run 1, Run 6 and Run 7）. The experiment revealed that the development of beach-bar was controlled by water level, wave parameters and initial slope. The deposited locations of distal bar and nearshore bar were controlled by the water level. Two beach-bars were migrated downward when the water level falls（Run 1, Run 2 and Run 3）. The width and thickness of distal bar and nearshore bar were controlled by wave parameters, especially the wave height. They increased with the scale of wave. But, the maximum thickness is limited by the water level（Run 1, Run 4 and Run 5）. The distance between distal bar and nearshore bar was controlled by the initial slope. It became shorter with the steeper slope. Distal bar and nearshore bar changed into one bar when the initial gradient was greater than 1/20（Run 1, Run 6 and Run 7）. The results suggest formative mechanism and controlling factors related to beach-bars.

关键词： flume tank depositional mechanism controlling factors beach-bar wind waves

Discovery of lacustrine shale deposits in the Yanshan Orogenic Belt,China: Implications for hydrocarbon exploration

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Geoscience Frontiers 2021年第6期12卷 326-353页

作者： yuanfu zhang Xiaodong Yuan Min Wang Pengcheng Ge Yancui Huo Jie Xu Jianguo zhang Jian Cheng Zaixing Jiang School of Energy Resources China University of GeosciencesBeijing 100083China Institute of Earth Sciences China University of GeosciencesBeijing 100083China PetroChina Research Institute of Petroleum Exploration&Development Beijing 100083China School of Ocean Sciences China University of GeosciencesBeijing 100083China Wuxi Branch of SINOPEC Petroleum Exploration&Production Research Institute WuxiJiangsu 214126China

The mechanism of formation of lacustrine deposits within stable orogenic belts and their potential for shale oil and gas exploration are frontier themes of challenge in the fields of sedimentology and petroleum exploration. Orogenic belts witness strong tectonic activities and normally cannot host stable lacustrine basins and deep shale formations. Therefore, basins in orogenic belts are considered to have no potential to form shale hydrocarbon reservoirs. Here we investigate the Luanping Basin located in the Yanshan orogenic belt where previous studies regarded rivers and fan deltas as the major main Mesozoic deposits. Based on detailed field exploration and scientific drilling, we report the finding of a large number of lacustrine shale continental deep-water deposits in the Mesozoic strata. Our finding of the occurrence of active shale oil and gas also in this basin also subvert the previous *** report SHRIMP zircon U-Pb age that define the bottom boundary of the target interval as 127.6 ± 1.7 Ma belonging to the early Cretaceous strata. Tectonics and climate are considered to be the main factors that controlled the deep-water sedimentation during this period. The drill cores revealed evidence of shale gas and the TOC of shale is 0.33%–3.60%, with an average value of 1.39% and Ro is 0.84%–1.21%, with an average value of 1.002%. The brittleness index of shale is between 52.7% and 100%. After vertical well fracturing, the daily gas production is more than 1000 m^(3). Our findings show that the basin has considerable potential for shale oil and gas. The geological resources of the shale gas in the Xiguayuan Fm. are estimated as 1110.12 × 10^(8) m^(3), with shale oil geological resources of 3340.152 × 10^(4) t. Our findings indicate that the Yanshan orogenic belt has potential exploration prospect. This work not only redefines the Luanping Basin as a rift deep-water Mesozoic Lake Basin, but also rules out the previous notion that the basin is dominated by

关键词： Luanping Basin Deep-water sedimentation Drill core data Lacustrine deposits Petroleum exploration

The concept, characteristics and significance of fluvial fans

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Petroleum Exploration and Development 2020年第5期47卷 1014-1026页

作者： zhang yuanfu DAI Xin WANG Min LI Xinxin China University of Geosciences Beijing 100083China PetroChina Research Institute of Petroleum Exploration&Development Beijing 100083China

The concept and characteristics of fluvial fan are elucidated through literature review and case ***,the concept and terminology of fluvial fan are ***,the progress and controversy on the formation mechanism,analysis methods and sedimentary models of fluvial fan are elaborated,and fluvial fan is compared with alluvial fan,river and lacustrine ***,ten identification signs of the fluvial fan are *** is found through the study that development and scale of fluvial fan are affected by external factors such as climate,tectonic,provenance and wind *** facies and lithofacies association inside the fan are controlled by the activity of the internal *** is pointed that fluvial fans are widely distributed in the world not only today but also in the geological *** occurrence of fluvial fan will change the traditional continental deposition system dominated by alluvial ***,the research of fluvial fan will be of great significance in the fields of sedimentology and oil and gas exploration.

关键词： fluvial fan alluvial fan river distributary fluvial system sedimentary system

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美育融入病理学课程教学模式的实践探索

医学教育管理 2024年第3期10卷 280-285页

作者：李兰任铭新王博张元福彭译漫屈弓丞韦婉儿张文勇南方科技大学医学院深圳518055

本文旨在探索美育与医学专业病理学课程融合协同育人教学的新模式。病理学课程将病变抽象知识形象化,通过显微摄影拍图、绘图、讲图、评图一系列参与式互动,引导学生对人体疾病微观结构进行细致观察和鉴别。实施这种教学模式,不仅能加... 详细信息

本文旨在探索美育与医学专业病理学课程融合协同育人教学的新模式。病理学课程将病变抽象知识形象化,通过显微摄影拍图、绘图、讲图、评图一系列参与式互动,引导学生对人体疾病微观结构进行细致观察和鉴别。实施这种教学模式,不仅能加深学生对知识点概念的理解,提升对疾病组织结构的认知水平,还能引导学生发现和感知医学微观世界的独特魅力,增强对病理学科的兴趣和热爱。美育教学理念在这一过程中也得以深入渗透到病理学课堂全过程,达到促进医学形态学审美能力,进而增强学生医艺修养的效果。病理学和美育的跨学科融合,也可为基础医学教育带来新的视角和启发。

关键词：美育病理学教学医学绘图参与式互动