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| 1 | 西非下刚果盆地深水水道沉积特征及控制因素显示文摘深水水道体系是从大陆斜坡到深海盆地'源-汇'系统的重要组成部分,也是当前国际深水油气勘探的重要储层类型。对下刚果盆地中新统深水水道沉积特征、充填演化和控制因素的研究有助于加深对盆地动力学过程的认知和提高深水储层的预测精度。通过应用三维地震、测井和录井资料综合分析,基于层序地层学、地震地层学和地震地貌学研究的技术方法和手段,对下刚果盆地中新统高精度层序地层格架、深水沉积单元、深水水道发育类型、复合水道体系发生、发展、衰退和消亡的演化过程,以及控制因素进行了深入研究。结果表明:下刚果盆地中新统地层以最大水退面和初始水进面为层序界面,可以划分出14个四级层序,其中四级层序SQ1L,SQ2L,SQ3L,SQ4L,SQ5L,SQ6L和SQ7L是深水水道发育的主要时期。深水水道具有侵蚀界面、水道充填、内天然堤、外天然堤、末端朵体、远洋沉积和滑塌块体7类深水沉积单元,其中水道充填和末端朵体是砂质沉积单元。研究区深水水道可以划分为单期下切、单期加积、垂向加积复合、侧向迁移复合4种基本类型,其中垂向加积复合水道和侧向迁移复合水道同时出现在四级层序SQ7L内,指示了水道充填演化中'自旋回'因素的控制作用。在此基础上,提出构造隆升是形成深水富砂水道体系的原动力,西非海平面变化控制着三级层序的发育,制约着深水水道复合体的发育规模。气候由温室转变为冰室的交替变化控制了深水砂质重力流沉积和深海泥质沉积的四级层序发育部位。 | 李全 吴伟 康洪全 任世君 逄林安 杨婷 蔡露露 刘小龙 | 2019 | 石油与天然气地质2019，40，4： | 17 |
| 2 | Deep-water depositional architecture and sedimentary evolution in the Rakhine Basin,northeast Bay of Bengal显示文摘Since the consecutive discovery of several gas fields from 2004 to present,the Rakhine Basin has been an active area for petroleum exploration in the Bay of Bengal.High-resolution 3D seismic data and well data from blocks AD1,AD6 and AD8 offshore northwest Myanmar are used to study the Miocene–Pleistocene depositional architecture and sedimentary evolution in the Rakhine Basin.Analysis of seismic facies and seismic attributes indicates that deep-water architectural elements include submarine canyons,confined slope channel complex systems,aggradational channel–levee complexes,isolated channels,frontal splays and mass-transport complexes,which have variable characters(shape,dimension,sedimentary architecture)within predominantly background deep-water slope-basin floor facies.Most of the sediments are interpreted to be sourced from the Ganges–Brahmaputra fluvio-deltaic system to the north with only minor lateral input from the IndoMyanmar Ranges to the east.Investigation of the depositional evolution and architectural elements transformation during the filling history of the Rakhine Basin suggests the Rakhine Basin experienced rapid progradation during the Oligocene–Middle/Upper Miocene,gradual retrogradation during the Middle/Upper Miocene–Early Pliocene and gradual progradation during the Early Pliocene–Pleistocene.Published exploration results indicate that the main reservoirs of the discoveries in blocks A1 and A3 are Pliocene frontal splays and channel–levee fills,dominated by fine and very fine-grained sandstones,in structural and structural–stratigraphic traps.Analytic results from seismic characters and several exploration wells indicate that channel complexes and associated overbanks and frontal splays with fine-grained sandstones and siltstones trapped by the four-way closures are primary reservoir targets. | Hong-Xia Ma Guo-Zhang Fan Da-Li Shao Liang-Bo Ding Hui Sun Ying Zhang Yong-Gang Zhang Bryan T.Cronin | 2020 | Petroleum Science2020，17，3： | 5 |
| 3 | 玛湖西斜坡百口泉组扇三角洲地震沉积学研究显示文摘针对扇三角洲前缘砂砾岩体层间物性变化大,优质储层难以预测的关键问题,在地震沉积学理论指导下,利用地震岩性学、地震地貌学及地层切片技术,结合测井和地震等资料对准噶尔盆地玛湖凹陷西斜坡风南地区百口泉组扇三角洲沉积相展布特征和充填过程进行了识别与描述。建立了玛湖凹陷西斜坡三叠系百口泉组高精度层序地层格架,划分出6个四级层序。识别出研究区内百口泉组扇三角洲平原分流河道、河道间,扇三角洲前缘水下分流水道、河口坝、席状砂等沉积微相及相应的测井相特征,通过岩性标定指出储层砂体与地震振幅之间的对应关系。利用四级层序格架内的地层切片技术,明确了百口泉组扇三角洲沉积体系的演化充填过程,指出了研究区内扇三角洲前缘优质储层的分布范围以及下步勘探方向。 | 李全 李培俊 倪振 刘军 刘荷冲 | 2020 | 西南石油大学学报(自然科学版)2020，42，2： | 3 |
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