【作者】 王锐；

【导师】 金强；

【作者基本信息】 中国石油大学 ， 地质资源与地质工程， 2007， 博士

【摘要】 随着胜利探区勘探形势的发展,地层油藏在构造油藏、岩性油藏勘探之后逐渐成为勘探的主要方向,本文综合利用地质与地震资料,着重分析了不整合的级别和类型及其对地层圈闭的控制作用,阐明了新近系/古近系、古近系内部、古近系/前古近系等三级不整合面上下超覆地层圈闭和不整合遮挡圈闭的油气成藏模式。通过高分辨率层序地层学研究,发现了三级不整合面之上超覆地层尖灭线识别方法,提出了相应的地层圈闭的描述方法,对有利目标提出勘探部署建议。对胜利油区进一步的油气勘探提供了理论依据和方法技术。发现三级不整合及其地层超覆和不整合面遮挡圈闭的分布规律,提出四种成藏模式阐明了地层油气藏富集规律,富足油源和纵向输导控制着新近系超覆圈闭的成藏、砂体物性和横向输导控制着古近系超覆圈闭的成藏、稠油遮挡和横向输导控制着新近系/古近系遮挡圈闭的成藏、泥质遮挡和多向输导控制着古近系内部地层圈闭的成藏作用。研制了地层超剥线地质统计、夹角外推两种精细描述方法,形成了叠前反演储层尖灭线描述技术,实现了地层油气藏定量预测,建立了不同层系地层油气藏的配套描述技术。形成高精度层序建格架、构造分析划区带、不整合形态定靶区、沉积相带找储层、“三线”组合描圈闭,综合分析选目标的地层油气藏“六步法”综合评价技术。运用上述新理论和新技术系统研究了胜利探区沾化凹陷、车镇凹陷地层油气藏的形成条件、油气富集规律,并对有利目标进行了精细预测和描述。在多个区块取得勘探突破和进展,展示了较为广阔的勘探前景。更多还原

【Abstract】 As the development of the oil and gas exploration in Shengli prospect, stratigraphy oil-pools becomes the main object after structure and sand reservoir. Using the geological and geophysical data, the thesis analyses the classes and types of unconformity, and illustrates the accumulation models of overlapping stratigraphy trap composed by third unconformity in Nenocene/Eogene, in the Eogene, Eogene/pre-Eogene and unconformity barrier trap. By researching on the high resolution sequence stratigraphy, it founds the recognition methods for the line of overlapping depositional termination above the third unconformity, and proposes the description methods for relevant stratigraphy traps. Besides, it proposes some views for prospecting the profitable objects, and provides theory criterion and method technology for the further hydrocarbon exploration in Shengli field.It founds the traps’distribution law of the third unconformity overlap and the unconformity barrier. The four types of accumulation model illustrate the enrichment rule of stratigraphy oil-pools. The abundant oil source and vertical migration controls the accumulation of Neogene overlapping trap. The physical property of sand body and horizontal migration controls the accumulation of Eogene overlapping trap. The heavy crude barrier and horizontal migration controls the accumulation of Neogene/Eogene barrier trap. And the muddy barrier and multi-trend migration controls the Eogene stratigraphy trap.It develops two kinds of fine description methods including the geological statistics of stratum overlapping and denuded line and extrapolation by included angle. It forms the description technology of prestack inversion for reservoir wedge out, achieves the quantification forecast of stratigraphy oil-pools, and establishes the relevant description methods of stratum reservoir with different stratigraphy.Besides, it forms comprehensive evaluation technology called six steps method for stratigraphy oil-pools exploration. It includes that high precision sequence establishes framework, structure analysis divides block, unconformity shape decides target, sedimentary facies finds reservoir, three lines assemblage descript trap, and multidisciplinary analysis chose object.Using above new theory and new technology, it studies systematically the forming condition and hydrocarbon concentrated law of stratigraphy oil-pools in Zhanhua sag and Chenzhen sag in Shengli field, and prospects finely and descript the profitable objects. Exploration breakthrough and development are obtained in many blocks. And it shows wide exploration prospect.更多还原