【摘要】 古隆起是控制珠一坳陷油气成藏的重要因素,从定性和定量两个角度分析了古隆起控藏条件和控藏分布特征。通过对古隆起区域构造及形成演化分析,阐明了三级古隆起构造格局分布特征,明确了古隆起经历了始新世、早-中中新世及晚中新世三个构造演化阶段,总体具有长期继承性发育特点。总结了古隆起控藏的地质特征:古隆起范围控制了平面油气分布范围;古隆起构造演化控制了多种圈闭发育及油气藏类型;古隆起位置控制了油气优势运移方向。应用"多要素匹配成藏模式"原理和方法,建立了适合珠一坳陷的地质模型和数学模型,阐明了隆控临界成藏条件和控藏规律。研究发现,93.0%的油气藏储量分布在古隆起坡顶及坡上,油气田的储量及油田个数随着到古隆起顶部的距离增大而减小。基于古隆起控藏模式,预测了珠海组、珠江组上下段、韩江组上下段等5个目的层古隆起控藏高概率地区主要分布在东沙隆起、北部隆起带、惠西南条带、陆丰凹陷、PY4洼以及恩平凹陷周缘。更多还原

【Abstract】 The palaeouplift in Zhu Ⅰdepression is the most important factor for controlling hydrocarbon. This paper analyzes the conditions and distribution characteristics of palaeouplifts from the qualitative and quantitative views. According to the analysis of regional tectonic and formation evolution,the paper clarified regional distribution characteristics of three level paleouplift tectonics. A three-stages of tectonic evolution was identified for the palaeouplift,including Eocene,Early-Mid Miocene and the Late Miocene. In general,the evolution of palaeouplifts have characteristics of inherited long-term development. Moreover,the paper summarized the palaeouplifts geological characteristics of controlling hydrocarbon from three aspects. Firstly,the range of palaeouplifts controlled the distribution of oil and gas reservoirs. Secondly,the tectonic evolution of palaeouplift controlled the types of traps and oil gas reservoir. Thirdly,the position of palaeouplift controlled the direction of oil andgas migration. A geological model and a mathematical model for Zhu Ⅰ depression were established,which based on the application of Multi-factor Matching Model. From this research,the palaeouplifts which controlled the critical reservoiring condition and reservoir controlling rule were clear. Not only the top and upper of palaeouplifts controlled 93% of the reserves distribution,but also the oil fields’ number and reserves were decreases with the increase of distance to the top of palaeouplifts. Base on the pattern of palaeouplifts reservoir controlling,the research predicted favorable exploration zones of palaeouplifts in five target layers,which include Dongsha uplift,northern uplift zone,the southwest of Huizhou sag,and the periphery of Lufeng sag,PY4 sag and Enping sag.更多还原