共查询到20条相似文献,搜索用时 46 毫秒
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准确认识储层沉积特征是油气藏评价的物质基础.应用高分辨率层序地层学原理,根据地层岩石学和地球物理学特征,识别层序界面、湖泛面和基准面升降旋回,将松辽盆地朝长地区泉三、四段划分了三级层序1.5个,对应3个基准面升降旋回,四级层序7个,对应14个基准面升降旋回,建立了等时层序地层格架,解决了油层组与层序地层的对应关系问题.... 相似文献
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靖边气田马五1—5亚段高分辨率层序地层 总被引:2,自引:0,他引:2
通过地层接触关系、岩性组合特征、岩石组分特征、物性变化特征及地层高频旋回样式分析,在靖边气田马五1-5亚段识别出地层不整合面、海泛面和岩性界面等3种层序界面.以其为约束,将马五1-5亚段划分为2个中期基准面旋回和15个短期基准面旋回,并建立了全区高分辨率等时地层对比格架.在地层格架内探讨了储层发育规律,表明储层分布宏观上受中期基准面升降变化控制,而优质储层(次生溶蚀孔洞缝型储层)主要处于中期旋回晚期的短期旋回中. 相似文献
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河流相地层层序发育特征及构成模式 总被引:1,自引:0,他引:1
运用高分辨率层序地层学理论对扶新隆起带北坡泉三段河流相地层开展高频层序划分与对比,并在短期基准面旋回相序特征和中期基准面旋回河道类型演化分析基础上,根据基准面旋回特征及河流水位的变化对研究区目的层进行了体系域的划分,建立了层序地层模式,从而为河道砂体预测、沉积微相分析以及成藏综合研究提供了具有等时意义的层序地层格架. 相似文献
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基准面变化在地震层序地层研究中的应用 总被引:1,自引:0,他引:1
通过基准面在层序地层发育过程中的变化分析,建立了层序地层、基准面旋回和储层砂体叠加方式的对应关系。在此基础上以苏北某凹陷盆地为例,通过基准面旋回分析并结合高分辨率测井层序地层研究,识别地震层序地层及其反射特征,同时以地震地层超覆特征及基准面旋回性对应关系,预测了目标层序储层砂体纵横向分布特点,提出了利用基准面旋回及地震层序地层预测砂体的探索性方法。 相似文献
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以沉积学和高分辨率层序地层学理论为指导,利用钻井、测井及露头剖面等资料,对川中潼南地区须家河组二段进行高分辨率层序地层学研究。在识别不同级别层序界面和湖泛面类型的基础上,将须家河组二段划分为2个中期基准面旋回层序(MSC)、4个短期基准面旋回层序(SSC)。在短期基准面旋回层序中进一步识别出向上"变深"的非对称型(A型)、向上"变深"复"变浅"的对称型(C型)旋回层序2种结构类型。以短期基准面旋回为时间单元,详细探讨了须家河组二段地质时期的古地理特征及演化,分析了主河道侧向迁移对沉积相展布的影响。 相似文献
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广北12-斜1井高分辨率层序地层学分析 总被引:3,自引:3,他引:0
为提高层序地层分析的分辨率和储集层预测的准确性,运用CrossTA等人倡导的地层基准面原理,对八面河油田广北12-斜1井进行了基准面旋回识别和高频层序划分。根据中期旋回与准层序组相对应以及短期旋回与准层序相对应的原则,将广北12-斜1井沙四段1-4砂层组 发出4个中期旋回,18个短期旋回,并运用旋回等时对比技术对广北地区进行了精细层序地层对比。 相似文献
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以高分辨率层序地层学理论方法为指导,综合运用岩心、录井和测井等资料,对赤岸油田韦2断块阜宁组一段进行了高分辨率层序地层学研究。结果表明,该区阜一段由4个中期基准面旋回层序组成,并划分出17个短期基准面旋回层序,其中短期旋回层序以向上"变浅"的非对称型和对称型2种基本结构类型为主;在各级次基准面旋回划分的基础上,应用旋回等时对比技术进行了精细地层对比,建立了韦2断块阜一段高分辨率等时地层对比格架。该研究为进一步的储层物性预测及储层结构描述等精细地质研究奠定了基础。 相似文献
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在对地表露头的微相分析基础上,对吉木萨尔地区仓房沟群进行高分辨率层序地层学研究。在仓房沟群内识别出由V级层序界面控制的短期基准面旋回层序,按结构类型的不同划分为向上“变深”的非对称型、向上变浅的非对称型、对称型等3种类型,并阐述了各类短期基准面旋回层序的砂体发育特征。在此基础上,根据短期基准面旋回层序的垂向序列、岩性岩相组合、结构类型及叠加样式等特征,对研究区仓房沟群中期、长期基准面旋回层序进行了划分,其中,中期基准面旋回层序8个,长期基准面旋回层序4个,最终建立了研究区高分辨率层序地层格架。 相似文献
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《石油地质与工程》2013,(2):I0001-I0006
01 Deformational characteristics and its segnificance on hydro- carbon reservoir--forming of Fuyu reservoir in the middle of Daqing Placanticline Ying Wenfeng et al(College of Earth Sciences, Chengdu University of Technology, Chengdu,Siehuan 610059) By the analysis of seismic data interpretation of Fuyu reservoir in Daqing Placanticline, the palaeotectonic maps of different times have been compiled. From the study of defor- mational characteristics of Fuyu reservoir, 相似文献
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《石油仪器》2009,23(3):I0002-I0005
Yang Yang, Dang Ruirong and Ren Zhiping. Research on transient electromagnetic method in borehole. PI, 2009,23(3) .1 - 3,7
The fundamental theory of transient electromagnetic method in borehole is researched. The distribution characteristics of transient electromagnetic field in borehole, calculation procedure of apparent conductivity and the method of time-depth conversation are expounded, and loop configuration in the borehole is introduced. These provide theoretical basis for further studying transient electromagnetic systems in borehole. 相似文献
The fundamental theory of transient electromagnetic method in borehole is researched. The distribution characteristics of transient electromagnetic field in borehole, calculation procedure of apparent conductivity and the method of time-depth conversation are expounded, and loop configuration in the borehole is introduced. These provide theoretical basis for further studying transient electromagnetic systems in borehole. 相似文献
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《石油仪器》2013,(5):I0003-I0006
Zhang Han, Chen Bao, Wang Wei, Wu Xiangping, Cheng Gang and Yang Jing. FPGA based high speed acquisition and processing module for logging depth signals. PI, 2013,27 (5): 1-4 Depth information is a very important data during the whole progress of well logging. This paper presents a kind of method for acquisition and processing the depth information by using FPGA platform. Firstly, we have designed an isolation circuit, besides, with the help of Cyclone series FPGA produced by Altera, we processed the depth pulse outside the chip and provided depth interrupt with the moving direction during the logging progress, which can be pro- cessed by an external DSP processor. After we designed the logic inside the FPGA, we use SignalTap II logic analyzer embedded in the Quartus II software to test our design. The results show that: the integrated high-speed depth signal acquisition and processing module not only has a high sampling speed and measuring accuracy, but also, under the pro- tection of the state machine, it has the ability to screen and judge errors. It improves the reliability of the system and meets the design requirements of the depth measurement system. 相似文献
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《石油地质与工程》2013,(4):I0001-I0006
Ol Characteristics of hydrocarbon pathway systems and their controls over hydrocarbon accumulation in the Mahai--Nanb- axian area Zhai Xiaofeng et al (College of Geological Science and Engineering, Shandong Universily of Science and Technolo- gy, Qingdao, Shandong 266590) 相似文献