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玛湖凹陷及周缘白碱滩组勘探突破与新认识

新疆石油地质 2024年第3期45卷 296-305页

作者：卞保力苏东旭蒋文龙王学勇潘进刘龙松蒋中发中国石油新疆油田分公司勘探开发研究院新疆克拉玛依834000

为明确玛湖凹陷白碱滩组砂体分布规律和油气成藏模式,评价其油气勘探前景,综合钻井、测井、地震、分析化验等资料,系统梳理白碱滩组二段沉积规律和成藏特征。白碱滩组二段为辫状河三角洲—滩坝—浊积扇沉积序列,发育水下分流河道砂、滩... 详细信息

为明确玛湖凹陷白碱滩组砂体分布规律和油气成藏模式,评价其油气勘探前景,综合钻井、测井、地震、分析化验等资料,系统梳理白碱滩组二段沉积规律和成藏特征。白碱滩组二段为辫状河三角洲—滩坝—浊积扇沉积序列,发育水下分流河道砂、滩坝砂和浊积砂3种不同类型的砂体,辫状河三角洲前缘亚相以河道砂为主,滨—浅湖发育滩坝砂,半深湖—深湖受坡折带控制发育多个浊积扇体,浊积砂呈朵叶状分布,建立了水下分流河道—滩坝—浊积扇的沉积控砂模式。研究区发育9大走滑断裂体系,其中,走滑断裂直通型、走滑断裂伴生型和走滑断裂接力型3种断裂组合能够有效沟通二叠系风城组烃源岩,作为油气垂向高效运移通道,白碱滩组二段整体具有走滑断裂通源、断裂砂体配置控藏和优质储集层富集的成藏模式。

关键词：准噶尔盆地玛湖凹陷三叠系白碱滩组沉积模式成藏主控因素

准噶尔盆地盆1井西凹陷及周缘石炭系—二叠系天然气成藏条件及勘探方向

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中国石油勘探 2024年第4期29卷 82-96页

作者：苏东旭朱永才刘龙松钱海涛陈海龙蒋中发张天环中国石油新疆油田公司勘探开发研究院

近期,准噶尔盆地盆1井西凹陷周缘SX16、SX18等井在近源下组合石炭系—二叠系取得了天然气重大发现,认为其具有成为大型天然气区的前景。然而,针对研究区石炭系—二叠系天然气分布规律以及勘探有利区缺少系统的研究,制约了天然气成藏规... 详细信息

近期,准噶尔盆地盆1井西凹陷周缘SX16、SX18等井在近源下组合石炭系—二叠系取得了天然气重大发现,认为其具有成为大型天然气区的前景。然而,针对研究区石炭系—二叠系天然气分布规律以及勘探有利区缺少系统的研究,制约了天然气成藏规律的认识和下一步勘探部署。为此,综合地震、测井、岩心、薄片和地球化学分析等多种资料,系统研究了烃源岩、储层、输导体系等天然气成藏条件,建立石炭系—二叠系三大含油层组的成藏模式,并对下一步的勘探方向进行分析。研究表明:(1)风城组和下乌尔禾组是最重要的两套优质烃源岩,厚度为80~200m,埋藏深度大于7000m,演化程度高,Ro大于1.72%,已经达到了规模生气阶段,具备形成大中型气田的气源条件。(2)3套规模储层为天然气高产提供了基础,石炭系以火山岩为主,发育高孔气孔状溢流相火山岩和爆发相火山角砾岩,经风化作用和裂缝改造物性好,最高孔隙度可达20%以上;风城组常规砂砾岩—非常规云质致密砂岩—非常规云质页岩有序分布,孔隙度平均小于8%,但分布面积超2600km^(2);凹陷区上乌尔禾组一段砂体叠置连片,可形成岩性圈闭群;(3)海西期深大断裂体系与不整合面相匹配形成了立体输导体系,有利于下组合天然气大面积成藏;(4)三大含油层系具有不同的成藏模式,石炭系为新生古储、源储大跨度对接成藏模式,风城组为源内非常规与常规并存成藏模式,上乌尔禾组为大型地层—岩性圈闭大面积成藏模式。分析认为,盆1井西凹陷及周缘石炭系—二叠系天然气成藏条件良好,天然气勘探潜力大,鼻隆带靠近烃源岩区一侧的石炭系构造气藏,风城组常规砂砾岩气藏和非常规致密气、页岩气,以及凹陷区上乌尔禾组一段是今后勘探的有利方向。

关键词：准噶尔盆地盆1井西凹陷石炭系风城组上乌尔禾组天然气成藏条件

Ground-penetrating radar study of beach-ridge deposits in Huangqihai Lake, North China： the imprint of washover processes

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Frontiers of Earth Science 2016年第1期10卷 183-194页

作者： Xin SHAN Xinghe YU Peter D. CLIFT Chengpeng TAN Shunli LI Zhixing WANG dongxu su School of Energy Resources China University of Geosciences (Beijing) Beijing 100083 China Department of Geology and Geophysics Louisiana State University Baton Rouge LA 70803 USA

Determining the origin of beach ridges in lacustrine basins can often be problematic. The sedimen- tary processes responsible for formation of beach ridges on the north shore of Huangqihai Lake were investigated by using ground penetrating radar （GPR）. A 400 MHz GPR antenna was used to achieve a high vertical resolution of 0.044）.08 m. The radar stratigraphy was then determined using principles of seismic stratigraphy. The radar facies （RF） were determined by analyzing internal configuration and continuity of reflections, as well as reflection termination patterns. The identified RF fall into three groups （inclined, horizontal and irregular）. The inclined group consists of RF that display inclined reflections. The horizontal group consists of RF that exhibit predominantly horizontal reflections. In the irregular group, the reflections are typically weak. RF with reflections with gently landward dips in the shore-normal profile are interpreted as washover sheet deposits. RF with steeply landward-dipping and imbricated reflections are interpreted as washover lobes. Washover sheets develop when overwash fails to enter a significant body of water and sedimentation takes place entirely on the relatively flattened topography. Washover lobe development occurs when overwash enters a region in which topography dips steeply landward, and sedimentation takes place on the surface of washover sheets or previous washover lobes. The beach-ridge deposits are interpreted as being formed entirely from vertically and laterally stacked washover sheets and washover lobes. They were formed by wave-dominated processes and secondary overwash processes supplemented by longshore currents.

关键词： beach-ridge ground penetrating radar radar facies radar stratigraphy washover process

Sedimentology and Sequence Stratigraphy of Marine to Lacustrine Deltaic Deposits in a Craton Basin and Their Controlling Factors: Shan 2 Member–He 8 Member(Guadalupian–Lopingian, Permian), Southeast Ordos Basin, North China

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Acta Geologica Sinica(English Edition) 2018年第1期92卷 268-285页

作者： SHAN Xin YU Xinghe Peter CLIFT LI Yalong JIN Lina su dongxu DU Yonghui ZHOU Jinsong HAN Xiaoqin Key Laboratory of Marine Sedimentology and Environmental Geology First Institute of Oceanography State Oceanic Administration Qingdao 266061 Shandong China Laboratory for Marine Geology Qingdao National Laboratory for Marine Science and Technology Qingdao 266061 China School of Energy Resources China University of Geosciences Beijing 100083 China Department of Geology and Geophysics Louisiana State University Baton Rouge 70803 USA School of Ocean and Earth Science Tongji University Shanghai 200092 China Research Institute of Shaanxi Yanchang Petroleum (Group) Company Limited Xi 'an 710065 Shaanxi China

The Shan 2 Member, Shan 1 Member and He 8 Member of the Mid-Late Permian Shanxi and lower Xiashihezi formations, in the southeastern Ordos Basin, together comprise -150 m of deltaic deposits. This sequence records an overall evolution from deep marine environment to shallow lake associated with braided river, braided river delta and meandering river delta. Core description, well log interpretation, and stable isotope analysis, including carbon, oxygen and strontium, were conducted to understand the sedimentary evolution of Shan 2 to He 8 Member. The Shanxi Formation, which consists of the Shan 2 and Shan 1 members, is characterized by a tidal-influenced meandering river delta environment and a higher j13C value and S7Sr/S6Sr ratio and a lower jlSo value. The He 8 Member, the basal part of the Xiashihezi Formation, is featured by a braided river to braided river delta system and a lower j13C value, S7Sr/S6Sr ratio, and a higher jlSo value. Four third-order depositional sequences separated by five sequence boundaries are determined. Coarsening upward sequences of the Shan 2 Member-He 8 Member indicate a general regression trend, which can be correlated to global sea-level fall occurring during the Roadian-Wuchiapingian, as also evidenced by previous published zircon U-Pb results. The coal-bearing sequence （Shanxi Formation） to non-coal-bearing sequence （He 8 Member）, as well as a decrease of 87Sr/86Sr, suggest a trend from humid to arid climates. A combined effect of sea-level drop and a small uplift at the end of Shanxi Formation are proposed.

关键词： sequence stratigraphy sedimentary sequence delta marine to lacustrine evolution Roadian-Wuchiapingian Ordos Basin

Learning Sequential and Structural Dependencies Between Nucleotides for RNA N6-Methyladenosine Site Identification

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IEEE/CAA Journal of Automatica Sinica 2024年第10期11卷 2123-2134页

作者： Guodong Li Bowei Zhao Xiaorui su dongxu Li Yue Yang Zhi Zeng Lun Hu Xinjiang Technical Institute of Physics and Chemistry Chinese Academy of ScienceUrumqi 830011China College of Computer Xi’an Jiaotong UniversityXi’an 710049China IEEE

N6-methyladenosine(m6A)is an important RNA methylation modification involved in regulating diverse biological processes across multiple ***,the identification of m6A modification sites provides valuable insight into the biological mechanisms of complex diseases at the post-transcriptional *** a variety of identification algorithms have been proposed recently,most of them capture the features of m6A modification sites by focusing on the sequential dependencies of nucleotides at different positions in RNA sequences,while ignoring the structural dependencies of nucleotides in their threedimensional *** overcome this issue,we propose a cross-species end-to-end deep learning model,namely CR-NSSD,which conduct a cross-domain representation learning process integrating nucleotide structural and sequential dependencies for RNA m6A site ***,CR-NSSD first obtains the pre-coded representations of RNA sequences by incorporating the position information into single-nucleotide states with chaos game representation *** then constructs a crossdomain reconstruction encoder to learn the sequential and structural dependencies between *** minimizing the reconstruction and binary cross-entropy losses,CR-NSSD is trained to complete the task of m6A site *** experiments have demonstrated the promising performance of CR-NSSD by comparing it with several state-of-the-art m6A identification ***,the results of cross-species prediction indicate that the integration of sequential and structural dependencies allows CR-NSSD to capture general features of m6A modification sites among different species,thus improving the accuracy of cross-species identification.

关键词： Cross-domain reconstruction cross-species prediction N6-methyladenosine(m6A)modification site RNA sequence sequential and structural dependencies

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基于三维模型贴图与结构数据的信息隐藏算法

通信学报 2019年第5期40卷 211-222页

作者：任帅王震苏东旭张弢慕德俊长安大学信息工程学院陕西西安710064 长安大学电子与控制工程学院陕西西安710064 西北工业大学自动化学院陕西西安710072

针对三维模型信息隐藏无法有效抵抗联合攻击,秘密信息极易被破坏而无法正确提取的问题,提出一种基于三维模型贴图与结构数据的信息隐藏算法。首先,在标准图片库中选取多幅原始stl三维模型载体的纹理贴图,利用db1函数经过2次二维离散Daub... 详细信息

针对三维模型信息隐藏无法有效抵抗联合攻击,秘密信息极易被破坏而无法正确提取的问题,提出一种基于三维模型贴图与结构数据的信息隐藏算法。首先,在标准图片库中选取多幅原始stl三维模型载体的纹理贴图,利用db1函数经过2次二维离散Daubechies变换将备份的隐秘消息以水印嵌入的思想隐藏其中;其次,以stl类型的三维模型为原始结构载体,利用帧化采样的小波域三维模型信息隐藏算法,将要隐藏的隐秘信息嵌入相应变换空间;最后,利用正交投影的纹理映射算法将二维贴图数据与三维stl数据矩阵相乘,生成含密obj模型文件进行传输。算法利用三维模型的贴图与拓扑坐标空间双重嵌入隐秘信息,有效增强了算法的顽健性。实验分析表明,含密三维模型的不可见性、顽健性以及抗分析性均有提升,可以实现不同类型载体冗余空间的备份隐藏嵌入,为复杂环境下的信息安全传输提供一种可靠的技术手段。

关键词：信息隐藏二维离散Daubechies小波变换 obj模型抗分析性

鄂尔多斯盆地东南部本溪组障壁海岸沉积特征与展布规律

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天然气工业 2017年第9期37卷 48-56页

作者：苏东旭于兴河李胜利单新周进松中国石油新疆油田公司勘探开发研究院中国地质大学(北京)能源学院陕西延长石油(集团)有限责任公司研究院

鄂尔多斯盆地已突破"南油北气"的传统认识,其东南部上石炭统本溪组天然气储量丰富。为了给本溪组有利储层的预测提供指导,首先根据颗粒粒度、结构、沉积构造和岩相组合等特征在本溪组障壁海岸沉积之中划分出潮坪和障壁—澙湖2种主要沉积... 详细信息

鄂尔多斯盆地已突破"南油北气"的传统认识,其东南部上石炭统本溪组天然气储量丰富。为了给本溪组有利储层的预测提供指导,首先根据颗粒粒度、结构、沉积构造和岩相组合等特征在本溪组障壁海岸沉积之中划分出潮坪和障壁—澙湖2种主要沉积相,进一步识别出潮汐水道、潮下带、潮间带、潮上带、障壁、澙湖、冲溢扇和潮汐三角洲等多种沉积亚相,并对上述沉积亚相进行了总结和对比,建立了垂向序列。进而在沉积模式的指导下,依据砂岩厚度资料剖析了本溪组沉积相的平面展布规律,最后研究了该区整体沉积展布格局和沉积演化规律的控制因素。结论认为:(1)该区自西向东呈现潮坪—障壁澙湖—浅海陆棚的变化规律,本1段沉积相带较本2段整体向西迁移;(2)障壁海岸沉积是在古隆起控制下由盆地北部扇三角洲经波浪和潮汐改造而形成的,其演化主要受到盆地基底缓慢下降和海平面整体上升的影响。

关键词：鄂尔多斯盆地晚石炭世本溪组沉积特征障壁海岸潮坪澙湖演化规律

核磁共振测井在低阻油层评价中的应用——以准噶尔盆地阜东斜坡头屯河组为例

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新疆石油地质 2017年第4期38卷 470-476页

作者：罗兴平苏东旭王振林王刚中国石油新疆油田分公司勘探开发研究院新疆克拉玛依834000

为了解决常规测井方法难以有效识别低阻油层的难题,以准噶尔盆地阜东斜坡头屯河组为例,应用核磁共振测井技术划分和评价低阻油层。利用核磁共振、阳离子交换容量以及岩石薄片、粒度分析等资料研究低阻油层的成因,在此基础上运用核磁共振... 详细信息

为了解决常规测井方法难以有效识别低阻油层的难题,以准噶尔盆地阜东斜坡头屯河组为例,应用核磁共振测井技术划分和评价低阻油层。利用核磁共振、阳离子交换容量以及岩石薄片、粒度分析等资料研究低阻油层的成因,在此基础上运用核磁共振T_2谱定性识别油水层,计算孔隙度、渗透率以及含水饱和度。头屯河组储集层虽然泥质、黏土矿物含量整体上不高,但其特殊的黏土矿物组成能够产生较高的附加导电性和束缚水含量,造成了油层电阻率普遍小于6Ω·m,呈低电阻率的特征。根据核磁共振T_2谱形态,参照200 ms处有无谱峰可以有效划分出油层、含水油层、含油水层和水层。以3 ms作为T_2截止值,结合岩心实验测得的孔渗关系,可计算低阻油层孔隙度和渗透率,最后将核磁共振测井计算的阳离子交换容量带入W—S模型确定低阻油层含水饱和度。此方法对低阻油层的定性识别和定量评价结果与实验数据相吻合,在生产中具有较好的适用性。

关键词：准噶尔盆地阜东斜坡头屯河组核磁共振测井低阻油层测井评价

电成像测井在复杂砂砾岩储集层岩性识别中的应用——以准噶尔盆地玛湖凹陷西斜坡百口泉组为例

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新疆石油地质 2018年第3期39卷 345-351页

作者：罗兴平庞旭苏东旭芦慧张妮王刚中国石油新疆油田分公司勘探开发研究院新疆克拉玛依834000 中国石油杭州地质研究院杭州310023

针对常规测井资料分辨率低、易受油气影响、难以有效反映砂砾岩粒径大小的问题,本文以准噶尔盆地玛湖凹陷百口泉组砂砾岩储集层为例,提出一种利用电成像测井自动识别复杂砂砾岩储集层岩性的方法。首先按粒级差异,将砂砾岩分为泥岩、砂... 详细信息

针对常规测井资料分辨率低、易受油气影响、难以有效反映砂砾岩粒径大小的问题,本文以准噶尔盆地玛湖凹陷百口泉组砂砾岩储集层为例,提出一种利用电成像测井自动识别复杂砂砾岩储集层岩性的方法。首先按粒级差异,将砂砾岩分为泥岩、砂岩、细砾岩、小中砾岩和大中砾岩;利用岩心刻度测井,分析总结了不同岩性的电成像测井特征;以图像处理技术为支撑,从电成像测井静态图像入手,通过图像灰度转化、构建灰度共生矩阵,计算砂砾岩岩性样本的对比度、相关度、熵、均匀度和能量5个特征值;依据多元统计学知识,利用贝叶斯判别分析法建立了泥岩、砂岩、细砾岩、小中砾岩及大中砾岩的岩性判别函数,进而对岩性进行判别。结果表明,电成像测井判别的岩性与岩心对比符合程度高,识别效果好。

关键词：准噶尔盆地玛湖凹陷百口泉组砂砾岩储集层电成像测井岩性识别图像处理