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Application of seismic sedimentology in oilfield exploration and development: taking the eastern area of Pre-Caspian Basin as an example 被引量:8
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作者 王一博 朱筱敏 +2 位作者 王继平 郭兵 王明 《西安石油大学学报(自然科学版)》 CAS 北大核心 2012年第1期I0001-I0007,117,共7页
滨里海盆地东部盐下下二叠统层序SⅢ主要发育辫状河三角洲和滨浅海沉积,该区钻井分布少、砂体厚度薄、典型地震相标志少,常规的沉积相研究方法受到一定的限制,沉积砂体分布范围不明确.利用90°相位转换和地层切片技术,对层序SⅢ的... 滨里海盆地东部盐下下二叠统层序SⅢ主要发育辫状河三角洲和滨浅海沉积,该区钻井分布少、砂体厚度薄、典型地震相标志少,常规的沉积相研究方法受到一定的限制,沉积砂体分布范围不明确.利用90°相位转换和地层切片技术,对层序SⅢ的高位体系域进行了地震沉积学研究,通过对地层切片的解释,精细刻画出辫状河三角洲前缘砂体在不同时期的平面分布范围,预测了沉积相在时空上的演化规律,为油气勘探开发提供地质依据. 展开更多
关键词 摘要 编辑部 编辑工作 读者
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Methods for seismic sedimentology research on continental basins 被引量:5
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作者 Ping-Sheng Wei Ming-Jun Su 《Petroleum Science》 SCIE CAS CSCD 2015年第1期67-80,共14页
In contrast to marine deposits, continental deposits in China are characterized by diverse sedimentary types, rapid changes in sedimentary facies, complex lithology, and thin, small sand bodies. In seismic sedimentolo... In contrast to marine deposits, continental deposits in China are characterized by diverse sedimentary types, rapid changes in sedimentary facies, complex lithology, and thin, small sand bodies. In seismic sedimentology studies on continental lacustrine basins, new thinking and more detailed and effective technical means are needed to generate lithological data cubes and conduct seismic geo- morphologic analyses. Based on a series of tests and studies, this paper presents the concepts of time-equivalent seismic attributes and seismic sedimentary bodies and a "four-step approach" for the seismic sedimentologic study of conti- nental basins: Step 1, build a time-equivalent stratigraphic framework based on vertical analysis and horizontal corre- lation of lithofacies, electrofacies, seismic facies, and pale- ontological combinations; Step 2, further build a sedimentary facies model based on the analysis of single- well facies with outcrop, coring, and lab test data; Step 3, convert the seismic data into a lithological data cube reflecting different lithologies by means of seismic tech- niques; and Step 4, perform a time-equivalent attribute analysis and convert the planar attribute into a sedimentary facies map under the guidance of the sedimentary facies model. The whole process, highlighting the verification and calibration of geological data, is an iteration and feedback procedure of geoseismic data. The key technologies include the following: (1) a seismic data-lithology conversion technique applicable to complex lithology, which can convert the seismic reflection from interface types to rock layers; and (2) time-equivalent seismic unit analysis and a time- equivalent seismic attribute extraction technique. Finally, this paper demonstrates the validity of the approach with an example from the Qikou Sag in the Bohai Bay Basin and subsequent drilling results. 展开更多
关键词 Continental basin seismic sedimentology Four-step approach Time-equivalent seismic attribute seismic sedimentary body Lithology conversion processing
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Subtle trap recognition based on seismic sedimentology- A case study from Shengli Oilfield 被引量:10
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作者 Huang Handong Zhang Ruwei +2 位作者 Luo Qun Zhao Di Peng Yongmin 《Applied Geophysics》 SCIE CSCD 2009年第2期175-183,共9页
Seismic sedimentology is the study of sedimentary rocks and facies using seismic data. However, often the sedimentary body features can't be described quantitatively due to the limit of seismic resolution. High resol... Seismic sedimentology is the study of sedimentary rocks and facies using seismic data. However, often the sedimentary body features can't be described quantitatively due to the limit of seismic resolution. High resolution inversion offsets this limitation and is applied to seismic sedimentology to identify subtle traps under complex geologic conditions, thereby widening the applicable range of seismic sedimentology. In this paper, based on seismic sedimentology, seismic phase-controlled nonlinear random inversion is used to predict the sandy conglomerate reservoir of Es3 in the Chezhen depression in Shengli Oilfield. Thickness and sedimentary microfacies maps of sandy conglomerate bodies in several stages are presented and several subtle traps were predicted and verified by drilling. 展开更多
关键词 seismic sedimentology subtle trap phase-controlled inversion seismic data Jiyang depression
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Application of seismic sedimentology in characterization of fluvial-deltaic reservoirs in Xihu sag, East China Sea shelf basin 被引量:1
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作者 LOU Min CAI Hua +4 位作者 HE Xianke LIU Yinghui HUANG Xin ZHANG Xianguo LIU Huafeng 《Petroleum Exploration and Development》 2023年第1期138-151,共14页
The fluvial-deltaic reservoirs of the Oligocene Huagang Formation in the Xihu sag of the East China Sea shelf basin reflect rapid lateral change in sedimentary facies and poor morphology of conventional slice attribut... The fluvial-deltaic reservoirs of the Oligocene Huagang Formation in the Xihu sag of the East China Sea shelf basin reflect rapid lateral change in sedimentary facies and poor morphology of conventional slice attributes,which bring difficulties to the reservoir prediction for subsequent exploration and development of lithologic reservoirs.The traditional seismic sedimentology technology is optimized by applying the characteristic technologies such as frequency-boosting interpretation,inversion-conventional–90°phase shift joint construction of seismic lithologic bodies,nonlinear slices,paleogeomorphology restoration,and multi-attribute fusion,to obtain typical slice attributes,which are conducive to geological form description and sedimentary interpretation.The Huagang Formation developed three types of sedimentary bodies:braided river,meandering river and shallow water delta,and the vertical sedimentary evolution was controlled by the mid-term base-level cycle and paleogeomorphology.In the early–middle stage of the mid-term base-level ascending cycle,braided channel deposits were dominant,and vertical superimposed sand bodies were developed.In the late stage of the ascending half-cycle and the early stage of the descending half-cycle,meandering river deposits were dominant,and isolated sand bodies were developed.In the middle–late stage of the descending half-cycle,shallow-water delta deposits were dominant,and migratory medium–thick sand bodies were developed.Restricted paleogeomorphology controlled the sand body distribution,while non-restricted paleogeomorphology had little effect on the sand body distribution.Based on reservoir characterization,the fault sealing type and reservoir updip pinch-out type structural lithological traps are proposed as the main directions for future exploration and development in the Xihu sag. 展开更多
关键词 East China Sea shelf basin Xihu sag Oligocene Huagang Formation fluvial-deltaic facies reservoir characterization seismic sedimentology
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Thin-interbedded reservoirs prediction based on seismic sedimentology
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作者 NI Changkuan SU Mingjun +2 位作者 YUAN Cheng LIU Huaqing CUI Xiangli 《Petroleum Exploration and Development》 CSCD 2022年第4期851-863,共13页
Interference of thin-interbedded layers in seismic reflections has great negative impact on thin-interbedded reservoirs prediction.To deal with this,two novel methods are proposed that can predict the thin-interbedded... Interference of thin-interbedded layers in seismic reflections has great negative impact on thin-interbedded reservoirs prediction.To deal with this,two novel methods are proposed that can predict the thin-interbedded reservoirs distribution through strata slices by suppressing the interference of adjacent layer with the help of seismic sedimentology.The plane distribution of single sand bodies in thin-interbedded reservoirs can be clarified.(1)The minimum interference frequency slicing method,uses the amplitude-frequency attribute estimated by wavelet transform to find a constant seismic frequency with the minimum influence on the stratal slice of target layer,and then an optimal slice corresponding the constant frequency mentioned above can be obtained.(2)The superimposed slicing method can calculate multiple interference coefficients of reservoir and adjacent layers of target geological body,and obtain superimposed slice by weighted stacking the multiple stratal slices of neighboring layers and target layer.The two proposed methods were used to predict the distribution of the target oil layers of 6 m thick in three sets of thin-interbedded reservoirs of Triassic Kelamayi Formation in the Fengnan area of Junggar Basin,Northwestern China.A comparison with drilling data and conventional stratal slices shows that the two methods can predict the distribution of single sand bodies in thin-interbedded reservoirs more accurately. 展开更多
关键词 seismic sedimentology thin-interbedded reservoir stratal slice amplitude-frequency spectrum Triassic Kelamayi Formation Junggar Basin
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Application of 9-component S-wave 3D seismic data to study sedimentary facies and reservoirs in a biogasbearing area:A case study on the Pleistocene Qigequan Formation in Taidong area,Sanhu Depression,Qaidam Basin,NW China
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作者 XU Zhaohui LI Jiangtao +4 位作者 LI Jian CHEN Yan YANG Shaoyong WANG Yongsheng SHAO Zeyu 《Petroleum Exploration and Development》 SCIE 2024年第3期647-660,共14页
To solve the problems in restoring sedimentary facies and predicting reservoirs in loose gas-bearing sediment,based on seismic sedimentologic analysis of the first 9-component S-wave 3D seismic dataset of China,a four... To solve the problems in restoring sedimentary facies and predicting reservoirs in loose gas-bearing sediment,based on seismic sedimentologic analysis of the first 9-component S-wave 3D seismic dataset of China,a fourth-order isochronous stratigraphic framework was set up and then sedimentary facies and reservoirs in the Pleistocene Qigequan Formation in Taidong area of Qaidam Basin were studied by seismic geomorphology and seismic lithology.The study method and thought are as following.Firstly,techniques of phase rotation,frequency decomposition and fusion,and stratal slicing were applied to the 9-component S-wave seismic data to restore sedimentary facies of major marker beds based on sedimentary models reflected by satellite images.Then,techniques of seismic attribute extraction,principal component analysis,and random fitting were applied to calculate the reservoir thickness and physical parameters of a key sandbody,and the results are satisfactory and confirmed by blind testing wells.Study results reveal that the dominant sedimentary facies in the Qigequan Formation within the study area are delta front and shallow lake.The RGB fused slices indicate that there are two cycles with three sets of underwater distributary channel systems in one period.Among them,sandstones in the distributary channels of middle-low Qigequan Formation are thick and broad with superior physical properties,which are favorable reservoirs.The reservoir permeability is also affected by diagenesis.Distributary channel sandstone reservoirs extend further to the west of Sebei-1 gas field,which provides a basis to expand exploration to the western peripheral area. 展开更多
关键词 9-component S-wave 3D seismic data seismic sedimentology biogas sedimentary facies reservoir Qaidam Basin Sanhu Depression Pleistocene Qigequan Formation
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塔里木盆地肖尔布拉克组上段烃源岩分布预测及油气勘探意义 被引量:4
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作者 徐兆辉 胡素云 +6 位作者 曾洪流 马德波 罗平 胡再元 石书缘 陈秀艳 陶小晚 《地学前缘》 EI CAS CSCD 北大核心 2024年第2期343-358,共16页
通常认为塔里木盆地下古生界海相烃源岩以下寒武统玉尔吐斯组泥质岩为主、中下奥陶统泥质岩为辅,下寒武统肖尔布拉克组上段(肖上段)以白云岩储层为主。塔中和塔北地区均钻遇了肖上段泥灰岩,最近钻探的京能柯探1和轮探3井肖上段泥灰岩样... 通常认为塔里木盆地下古生界海相烃源岩以下寒武统玉尔吐斯组泥质岩为主、中下奥陶统泥质岩为辅,下寒武统肖尔布拉克组上段(肖上段)以白云岩储层为主。塔中和塔北地区均钻遇了肖上段泥灰岩,最近钻探的京能柯探1和轮探3井肖上段泥灰岩样品TOC含量多数>0.3%,少量>2%。盆地内不同地区五口井肖上段发育泥灰(云)岩烃源岩,与苏盖特布拉克露头肖上段暗色泥灰岩地化指标(TOC含量是0.41%、R o是1.14%)一致,表明肖上段泥灰岩具备生烃能力。本文基于露头、地震和钻测井资料,利用地震沉积学理论技术、属性与正演相结合,建立了肖上段台内多期叠置“礁滩源”沉积模式。发现烃源岩分布在礁前至坡脚变缓处,连片分布广、叠合厚度大,是规模有效烃源岩,可为邻近储层供烃。经测算,古城三维区肖上段泥灰岩烃源岩总生烃量超亿吨。研究认识拓展了塔里木盆地下古生界海相烃源岩类型、层系和分布范围,提升了寒武系盐下油气资源潜力,坚定了勘探重点从台缘带向台内战略转移的信心,为塔里木盆地古城地区乃至全盆地油气勘探带来新启示。 展开更多
关键词 塔里木盆地 肖尔布拉克组上段 泥灰岩 烃源岩 地震沉积学 油气勘探意义
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Sparse-Spike Deconvolution Promoting Frequency Dependent Seismic Stratigraphic Analysis and an Application
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作者 LIU Chang 《Journal of Geological Resource and Engineering》 2019年第1期1-8,共8页
Low-frequency components of seismic data tend to characterize thicker litho-stratigraphic units, while high-frequency components tend to characterize thinner isochronous-stratigraphic units. Thus, frequency dependent ... Low-frequency components of seismic data tend to characterize thicker litho-stratigraphic units, while high-frequency components tend to characterize thinner isochronous-stratigraphic units. Thus, frequency dependent interpretation can help to achieve fine sedimentary sequence analysis. However, in current seismic sedimentology method, a certain frequency profile generated by frequency filtering, loses some stratum reflection information, which is out of the limited frequency band. To achieve real frequency dependent stratum reflection profiles with whole stratum information, a time-varying sparse-spiking deconvolution based method is proposed in this paper. A synthetic example and a real delta progradation example show the accuracy and effectiveness of proposed method. 展开更多
关键词 Sparse-spike DECONVOLUTION frequency dependent interpretation seismic STRATIGRAPHIC analysis seismic sedimentology
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九分量横波三维地震在生物气区沉积储层研究中的应用——以柴达木盆地三湖坳陷台东地区更新统七个泉组为例 被引量:1
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作者 徐兆辉 李江涛 +4 位作者 李剑 陈琰 杨少勇 王永生 邵泽宇 《石油勘探与开发》 EI CAS CSCD 北大核心 2024年第3期565-577,共13页
为解决疏松岩性含气区沉积相恢复及储层预测难题,基于中国首例九分量横波三维地震资料的地震沉积学分析,应用地震地貌学和地震岩性学建立四级等时地层格架,研究柴达木盆地台东地区更新统七个泉组沉积相和储层特征。研究方法和思路:首先... 为解决疏松岩性含气区沉积相恢复及储层预测难题,基于中国首例九分量横波三维地震资料的地震沉积学分析,应用地震地貌学和地震岩性学建立四级等时地层格架,研究柴达木盆地台东地区更新统七个泉组沉积相和储层特征。研究方法和思路:首先,利用九分量横波地震相位旋转、分频融合和地层切片技术,在卫星影像揭示沉积模式的基础上恢复主要标准层沉积相;然后,利用地震属性提取、主因子分析和随机拟合技术计算重点砂体的储层厚度和物性参数,经盲测井检验效果较好。研究结果表明:研究区七个泉组的优势沉积相为三角洲前缘和浅湖,三原色融合切片揭示发育2个旋回,同期存在3套水下分流河道体系;其中七个泉组中下部分流河道砂体厚度大、分布广、物性最好,是研究区有利储层,其渗透率还受成岩作用影响;分流河道砂体储层向涩北一号气田以西延伸范围较广,为该区勘探向西侧外围区扩展提供了依据。 展开更多
关键词 九分量横波三维地震 地震沉积学 生物气 沉积相 储层 柴达木盆地 三湖坳陷 更新统七个泉组
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塔里木盆地哈拉哈塘-哈得地区三叠系克拉玛依组地震沉积学研究 被引量:1
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作者 李佳洋 尹太举 +3 位作者 雷晓红 易艺 刘芳君 石放 《科学技术与工程》 北大核心 2024年第2期480-494,共15页
塔里木盆地哈拉哈塘-哈得地区三叠系作为油气显示富集有利层位之一,目前仅对三叠系进行了盆地级的研究,而区带认识不清,层序内部沉积演化不明,对区块勘探指导针对性不强,急需开展区带化研究。利用覆盖全区的高分辨率三维地震资料和岩心... 塔里木盆地哈拉哈塘-哈得地区三叠系作为油气显示富集有利层位之一,目前仅对三叠系进行了盆地级的研究,而区带认识不清,层序内部沉积演化不明,对区块勘探指导针对性不强,急需开展区带化研究。利用覆盖全区的高分辨率三维地震资料和岩心、测井资料的基础之上,运用地震沉积学研究方法分析地震属性结构,识别出面积达18000 km^(2)的哈拉哈塘-哈得地区克拉玛依组沉积相类型和沉积相平面展布范围,从而较准确的描述出其沉积相演化特征,为后续结合区域构造背景和断层分布来预测岩性油气藏分布提供依据。分析表明:塔里木盆地哈拉哈塘-哈得地区三叠系克拉玛依组整体为湖泊-三角洲沉积体系,上下段差异明显。下段砂体由北东向南西逐渐减少,反映河道影响作用减小,牙哈古隆起斜坡处发育三角洲平原亚相,向南西展布依次发育三角洲前缘亚相和湖泊相。克拉玛依组上段湖盆收缩,广泛发育三角洲平原亚相,向南西-西方向过渡为三角洲前缘亚相和湖泊相。其中,在三角洲平原亚相中发育下切谷沉积体系。 展开更多
关键词 地震沉积学 地震属性 塔里木盆地 克拉玛依组 哈拉哈塘-哈得地区
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海上稀疏井区高精度地层格架约束下的地震沉积学刻画——以东海盆地西湖凹陷中央背斜带X区块古近系花港组为例
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作者 董鑫旭 周兴海 +4 位作者 李昆 蒲仁海 王爱国 关蕴文 张鹏 《石油与天然气地质》 EI CAS CSCD 北大核心 2024年第1期293-308,共16页
海上工区面积辽阔,单井资料匮乏,花港组内部横向上的沉积微相界定存在争议、纵向上的沉积演化规律不明。为充分挖掘现有井、震资料的地质解释潜力,选取东海盆地西湖凹陷中央背斜带X区块古近系花港组为研究对象,提出了井-震小波变换建立... 海上工区面积辽阔,单井资料匮乏,花港组内部横向上的沉积微相界定存在争议、纵向上的沉积演化规律不明。为充分挖掘现有井、震资料的地质解释潜力,选取东海盆地西湖凹陷中央背斜带X区块古近系花港组为研究对象,提出了井-震小波变换建立高精度等时地层格架、井点沉积相标志定相类型、分频RGB属性刻画沉积相展布以及古地貌恢复辅助沉积相演化规律分析的地震沉积学解释技术。研究结果表明:(1)测井-地震小波变换结果有较好的一致性,可将研究区花港组分为花港组上段(花上段)3个(H1—H3)和花下段5个(H4—H8)四级旋回,并在此基础上建立高精度等时地层格架。(2)根据岩心相、测井相和地震相相互印证,确认研究区花港组沉积期为辫状河三角洲沉积环境。分频振幅属性验证不同厚度砂岩层在15,30和45 Hz单频体的振幅响应明显,采用分频RGB属性融合可在平面凸显不同沉积体的边界。(3)研究区H1和H2旋回整体为三角洲前缘沉积,H3—H6旋回为浅水背景下的三角洲平原-前缘沉积,H7和H8旋回为辫状河三角洲平原沉积,砂层组沉积相垂向演化受控于物源供给、相对湖平面高低和古地貌形态。在井-震时频分析建立等时地层格架基础上,通过相关性分析优选属性进行RGB融合能够凸显不同厚度砂岩的展布,减少了人为主观因素的影响,提升了沉积体边界的识别能力,可为其他井网稀疏地带沉积相刻画提供借鉴。 展开更多
关键词 沉积演化 地层格架 地震沉积学 花港组 古近系 西湖凹陷 东海盆地
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地震沉积学中90°相位转换技术适用性的讨论
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作者 章学刚 杨飞 +1 位作者 左中航 汪勇 《石油物探》 CSCD 北大核心 2024年第4期890-896,共7页
地震沉积学理论及应用技术研究中90°相位转换技术是地震沉积学研究的核心技术之一,但在实际研究与应用中,该技术并未取得如期的成果。在地震勘探原理中,地震反射同相轴代表着具有波阻抗差的地层界面。90°相位转换拟通过相移... 地震沉积学理论及应用技术研究中90°相位转换技术是地震沉积学研究的核心技术之一,但在实际研究与应用中,该技术并未取得如期的成果。在地震勘探原理中,地震反射同相轴代表着具有波阻抗差的地层界面。90°相位转换拟通过相移的方式,将代表着地层界面的地震反射同相轴赋于岩性地层的意义。由于地下地层的复杂多变,多种岩性频繁薄互层。利用薄互层地质模型的地震正演模拟结果,证实地震反射同相轴并不能与地层界面一一对应,因此,地震剖面中的同相轴是多套薄互层组合效应。受地震资料分辨力的限制,90°相位转换后的地震资料既不能将原始地震资料由界面型地震剖面转换成岩性地层剖面,也缺乏明确的地质含义,其在地震构造解释和地震岩性解释中的应用能力均很有限,所以很难称其为地震沉积学的应用技术。因此,将90°相位转换技术作为地震沉积学的核心技术并不合适,该技术无法提高地震资料分辨能力,也不能精确地将地震剖面转化成岩性剖面。 展开更多
关键词 地震沉积学 90°相位转换 道积分 地震正演模拟 同相轴
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基于地震沉积学和沉积物理模拟的河流决口扇沉积演化过程分析以渤海K油田明化镇组下段为例
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作者 胡晓红 尹太举 任大伟 《中国海上油气》 CAS CSCD 北大核心 2024年第2期74-86,共13页
为厘清渤海海域K油田明化镇组下段砂体分布特征,为下一步的目标优选提供参考依据,基于优选的地层属性地震切片和测井响应特征,分析了明化镇组下段沉积演化过程,设计了沉积物理模拟对比实验。结果表明:①平均负振幅属性最能反映该地区沉... 为厘清渤海海域K油田明化镇组下段砂体分布特征,为下一步的目标优选提供参考依据,基于优选的地层属性地震切片和测井响应特征,分析了明化镇组下段沉积演化过程,设计了沉积物理模拟对比实验。结果表明:①平均负振幅属性最能反映该地区沉积特征且该属性特征与测井曲线特征结合最好,确立5种地震属性相分别对应于强水动力下的决口扇沉积、弱水动力下的决口扇沉积、曲流河沉积、分支河道沉积、洪漫沉积;②渤海K油田主要发育河流决口扇沉积,分为前期的洪漫沉积与决口扇沉积、中期的扇上下切河道沉积及分支河道沉积、末期的曲流河道沉积3个部分,平面差异分布较为明显;③沉积模拟实验共分为洼地填充期、扇体改造期、支流发育期、汇聚摆动期,与渤海K油田明化镇组下段沉积演化有较好的对应,很好地验证并再现了河流决口体系演化过程。以上认识明确了明下段在K油田地区的沉积演化特征,有利于该地区的勘探评价,物理模拟验证也提供了一种新的研究思路。 展开更多
关键词 河流决口扇 沉积过程 渤海海域 明化镇组 地震沉积学 沉积物理模拟
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准噶尔盆地腹部下侏罗统曲流河地震沉积学解析
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作者 王伟刚 魏钦廉 +2 位作者 杨磊磊 桑鹏程 沈雨欣 《科学技术与工程》 北大核心 2024年第26期11092-11101,共10页
为深入探查埋深大、压实作用强、成岩程度高、储层物性差陆相油藏的区域分布规律,在准噶尔盆地腹部通过层序地层理论和基于地震拉平数据体提取的瞬时相位、均方根振幅、分频属性,对下侏罗统进行了地震沉积学解析。共识别出3个层序,SQ1~... 为深入探查埋深大、压实作用强、成岩程度高、储层物性差陆相油藏的区域分布规律,在准噶尔盆地腹部通过层序地层理论和基于地震拉平数据体提取的瞬时相位、均方根振幅、分频属性,对下侏罗统进行了地震沉积学解析。共识别出3个层序,SQ1~SQ2湖侵体系域均以曲河流沉积体系为主,SQ2高位体系域至SQ3以三角洲沉积体系为主。地震属性分析具有很好的一致性,结果表明:河道的形态清晰,位置可靠;河流在迁移演化过程中,河道单一,牛轭湖、决口扇等微相较发育;河流经历了低弯度-宽河床到高弯度-窄河床,再到中弯度-宽河床的演化,流向则由南北向逐渐演变为北东-南西向。研究结果可为利用地震资料识别曲流河的研究提供借鉴和指导。 展开更多
关键词 地震沉积学 地震属性 拉平地震数据体 曲流河 准噶尔盆地腹部
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Seismic Sedimentology and Its Application in Shallow Sea Area,Gentle Slope Belt of Chengning Uplift 被引量:11
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作者 张宪国 林承焰 张涛 《Journal of Earth Science》 SCIE CAS CSCD 2010年第4期471-479,共9页
Seismic sedimentology is a new frontier inter-discipline subject, and shows good prospect and potentiality in reservoir deposition research with seismic data and geophysics technologies. We made seismic sedimentology ... Seismic sedimentology is a new frontier inter-discipline subject, and shows good prospect and potentiality in reservoir deposition research with seismic data and geophysics technologies. We made seismic sedimentology research of shallow sea area, gentle slope belt of Chengning (埕宁) uplift, Bohalwan (渤海湾) basin. In shallow sea area with sparse well coverage, it was difficult to characterize the reservoir architecture with the traditional method based on wells. A new method to resolve the above problems is built: (1) information on plane and in section is inter-ealibrated with each other; (2) recognize the isochronic surfaces by frequency decomposition and interpret the depositional character with technology of stratal slicing; (3) make a comprehensive research with the stratal slice interpreta- tion and the dissection of well group. The depositional model of this area is built and used in the architecture analysis of area without wells. The architecture description reveals that the sedimentary character of pan-connection sand bodies in braided rivers is the reason for high water cut of the new horizontal wells. . 展开更多
关键词 seismic sedimentology shallow sea area gentle slope belt of Chenguing uplift braided river ARCHITECTURE braided bar
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Seismic Sedimentology Study in the High-Resolution Sequence Framework——A Case Study of Platform Margin Reef-Beach System of Changxing Formation,Upper Permian,Yuanba Area,Northeast Sichuan Basin,China 被引量:10
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作者 陈雷 陆永潮 +2 位作者 郭彤楼 邢凤存 焦养泉 《Journal of Earth Science》 SCIE CAS CSCD 2012年第4期612-626,共15页
The Yuanba (元坝) area is considered another potential large-scale reef-bank gas field following the Puguang (普光) field. However, there are lots of difficulties on the spatial and temporal distribution of reef-b... The Yuanba (元坝) area is considered another potential large-scale reef-bank gas field following the Puguang (普光) field. However, there are lots of difficulties on the spatial and temporal distribution of reef-beach and the detailed prediction of the effective reservoir in the sequence stratigraphic framework. In this paper, based on the seismic data, well, log and core, we conduct a high-resolution sequence division and build an isochronal sequence stratigraphic framework for the Changxing (长兴) Formation by the methods of wavelet transformation, FMI, etc.. Then, the corresponding relationship among the lithologic facies, logging facies, seismic facies, seismic attribute facies and reservoir of Changxing Formation were established through well-seismic calibration and geological-geophysical modeling. Furthermore, detailed study on the spatial and temporal distribution of microfacies of the reef-beach was carried out by means of seismic attribute extraction. Meanwhile,combined with impedance inversion, the spatial distribution of porosity of reef-beach reservoir was predicted. The results show that the revolution of the reef-beach system contains three stages which are initial bioclastic bank establishment stage, reef development stage and exposure stage. Also, porosity inversion shows that the region with high value of porosity is located in the reef cap, fore reef and back reef.Seismic Sedimentology Study in the High-Resolution Sequence Framework 展开更多
关键词 seismic sedimentology platform margin reef-beach system Changxing Formation Yuanba area Northeast Sichuan basin.
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Seismic Sedimentology Interpretation Method of Meandering Fluvial Reservoir:From Model to Real Data 被引量:8
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作者 Tao Zhang Xianguo Zhang +2 位作者 Chengyan Lin Jingfeng Yu Shouxiu Zhang 《Journal of Earth Science》 SCIE CAS CSCD 2015年第4期598-606,共9页
Reservoir architecture of meandering river deposition is complex and traditional seismic facies interpretation method cannot characterize it when layer thickness is under seismic vertical reso- lution. In this study, ... Reservoir architecture of meandering river deposition is complex and traditional seismic facies interpretation method cannot characterize it when layer thickness is under seismic vertical reso- lution. In this study, a seismic sedimentology interpretation method and workflow for point bar char- acterization is built. Firstly, the influences of seismic frequency and sandstone thickness on seismic re- flection are analyzed by outcrop detection with ground penetrating radar (GPR) and seismic forward modeling. It is found that (1) sandstone thickness can influence seismic reflection of point bar architecture. With the increasing of sandstone thickness from 1/4 wavelength (λ) to λ/2, seismic reflection geometries various from ambiguous reflection, "V" type reflection to "X" type reflection; (2) seismic frequency can influence reservoirs' seismic reflection geometry. Seismic events follow inclined lateral aggradation surfaces, which is isochronic depositional boundaries, in high frequency seismic data while the events extend along lithologic surfaces, which are level, in low frequency data. Secondly, strata slice interpretation method for thin layer depositional characterization is discussed with seismic forward modeling. Lastly, a method and workflow based on the above study is built which includes seismic frequency analysis, 90° phasing, stratal slicing and integrated interpretation of slice and seismic profile. This method is used in real data study in Tiger shoal, the Gulf of Mexico. Two episodes of meandering fluvial deposition is recognized in the study layer. Sandstone of the lower unit, which is formed in low base level stage, distributes limited. Sandstone distribution dimension and channel sinuosity become larger in the upper layer, which is high base level deposition. 展开更多
关键词 point bar reservoir architecture seismic sedimentology stratal slice.
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断陷湖盆中深层砂体地震沉积学研究——以南堡凹陷老爷庙地区东三上亚段为例
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作者 穆晓亮 常少英 +2 位作者 牛花朋 刘玲利 王孟修 《海相油气地质》 CSCD 北大核心 2024年第3期327-336,共10页
南堡凹陷老爷庙地区断坡控砂型的中深层储集体存在埋藏深、有效地震信号弱,砂体横向变化快、砂体形态刻画不清等问题,制约了高效井部署和剩余油挖潜。基于岩心、测井、地震等资料的分析,探索出了以能量半衰时地层结构识别、最小成本函... 南堡凹陷老爷庙地区断坡控砂型的中深层储集体存在埋藏深、有效地震信号弱,砂体横向变化快、砂体形态刻画不清等问题,制约了高效井部署和剩余油挖潜。基于岩心、测井、地震等资料的分析,探索出了以能量半衰时地层结构识别、最小成本函数法层序地层追踪以及相对泊松比识别岩性等3种方法为主的“三域三要素”地震沉积解释方法。结果表明:(1)研究区东营组三段上亚段沉积体纵向上具有“下砾上砂”的沉积特征:下部发育近岸水下扇沉积,上部发育辫状河三角洲沉积。(2)东三段上亚段以老爷庙走滑断裂转换带为界,庙北河间滩较发育,呈“砂岛式”沉积;庙南发育近岸水下扇沉积体系,沉积早期至沉积晚期扇体规模先扩大后缩小,形态由裙边状逐渐演化为狭长条带状水下分流河道沉积,扇体靠近油源断裂,是油气勘探开发的接替区。(3)“三域三要素”地震沉积储层表征方法,对于复杂构造区沉积微相表征、有利储层分布预测具有较好的适用性,砂体厚度预测符合率达到90%。 展开更多
关键词 地震沉积学 三域三要素 断陷湖盆 东营组 南堡凹陷
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基于波形特征向量的谱聚类地震相分析
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作者 秦德文 张岩 于杰 《CT理论与应用研究(中英文)》 2024年第1期13-23,共11页
本文提出一种基于地震沉积学原理沿层提取地震波形特征向量,并以谱聚类(spectral clustering)分析进行地震相划分的方法。谱聚类能够处理非线性的数据结构和高维数据的聚类问题,但其相似度矩阵的构建和谱分解的计算较为复杂,需要较高的... 本文提出一种基于地震沉积学原理沿层提取地震波形特征向量,并以谱聚类(spectral clustering)分析进行地震相划分的方法。谱聚类能够处理非线性的数据结构和高维数据的聚类问题,但其相似度矩阵的构建和谱分解的计算较为复杂,需要较高的计算资源和时间成本。为提高谱聚类算法的效率和可扩展性,本文提出将Mini-batch K-means算法与谱聚类算法结合起来的MKSC算法,在提高谱聚类算法精度的同时大大降低谱聚类空间的复杂度。经过对数值模拟、地球物理模型数据和实际地震资料的处理分析,证明该方法在沉积相划分、沉积相特征识别方面的效果明显,是一种具有良好应用前景的新型沉积特征分析工具。 展开更多
关键词 机器学习 谱聚类 波形聚类 地震相 地震沉积学
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尼日尔三角洲盆地中新统深水浊流沉积体系演化特征及主控因素
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作者 高云峰 范廷恩 +6 位作者 蔡文涛 王夏斌 乐靖 卜范青 陈飞 马良涛 何荣胜 《东北石油大学学报》 CAS 北大核心 2024年第5期1-16,I0001,共17页
基于取心、测井和三维地震数据,研究尼日尔三角洲盆地中新统深水浊流沉积地震响应特征、发育演化过程、沉积模式、储层品质及主控因素。结果表明:研究区目的层段自下而上可划分为2个二级层序(Sq1和Sq2)、6个三级层序,主要发育浊积水道... 基于取心、测井和三维地震数据,研究尼日尔三角洲盆地中新统深水浊流沉积地震响应特征、发育演化过程、沉积模式、储层品质及主控因素。结果表明:研究区目的层段自下而上可划分为2个二级层序(Sq1和Sq2)、6个三级层序,主要发育浊积水道、天然堤、溢岸沉积、决口扇及末端扇5种浊积单元;中新世海平面强烈下降阶段的低水位期,从深海盆地逐渐向大陆坡下部过渡,发育浊积水道末端扇体、半限制—非限制性高弯度浊积水道、限制性浊积水道—天然堤复合体沉积,储层为中孔、中高渗物性特征,但砂体规模、砂泥比和横向连续性总体上逐渐变差;中新世,全球冰期气候、强烈构造抬升、海平面不断下降,总体上控制浊流作用的强弱及沉积特征的变化;局部古地貌进一步影响浊流沉积相带分布、规模和形态;目的层段成岩作用弱,沉积条件是影响储层品质的主要因素。该结果为西非深水浊流沉积砂岩油气藏勘探开发提供指导。 展开更多
关键词 深水浊流沉积 地震沉积 演化特征 储层品质 主控因素 中新统 尼日尔三角洲盆地
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