| 沙垒田凸起古近纪源-汇系统中有利储层评价与预测 |
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| 引用本文： | 李顺利,朱筱敏,刘强虎,徐长贵,杜晓峰,李慧勇.沙垒田凸起古近纪源-汇系统中有利储层评价与预测[J].地球科学,2017,42(11):1994-2009. |
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| 作者姓名： | 李顺利 朱筱敏 刘强虎 徐长贵 杜晓峰 李慧勇 |
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| 作者单位： | 1.油气资源与工程国家重点实验室, 中国石油大学地球科学学院, 北京 102249 |
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| 基金项目： | 国家自然科学基金项目41272133国家科技重大专项2016ZX05024-002-002博士后基金项目2015M581269 |
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| 摘 要： | 渤海湾盆地沙垒田凸起与围区凹陷形成了典型的陆相断陷湖盆源-汇系统.基于钻井、地震、岩心及储层分析资料，刻画了沙垒田凸起及围区源-汇系统要素特征，并将源-汇系统分为断裂陡坡型、断裂缓坡型、斜坡型及断槽型4大类.不同类型源-汇系统的物源供给控制相应的沉积体系发育，从而影响其储层的成岩作用与物性特征.研究表明，沙垒田凸起围区凹陷的储层发育受源-汇系统要素耦合与成岩作用的共同控制，其中断裂缓坡带由于源区高差与汇水面积大，沿断裂坡折带分布的沉积体系与砂体规模大、范围广，砂岩成分、结构成熟度较高，埋深浅、机械压实作用较弱，次生孔隙发育，为优质储层发育的有利区，而断裂陡坡型、斜坡型及断槽源-汇系统次之.
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| 关 键 词： | 源-汇系统类型 成岩作用 储层分类 沙垒田凸起 石油地质 沉积 |
| 收稿时间： | 2017-05-17 |
Evaluation and Prediction of Favorable Reservoirs in Source-to-Sink Systems of the Palaeogene,Shaleitian Uplift |
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| Abstract: | The Shaleitian uplift and its surrounding areas in the Bohai bay basin constitute a typical Source-to-Sink (S2S) system in terrestrial rift basin. Based on the data of drilling, seismic, core, and reservoir analysis, this paper illustrates element characteristics of S2S systems in the Shaleitian uplift and its surrounding areas. The S2S systems are classified into four types, namely, faulted-steep-slope, faulted-gentle-slope, gentle-slope, and faulted-trough. Different S2S systems controlled various depositional systems, and subsequently influenced their reservoir diagenesis and properties. Research results indicate that reservoir development in sags around the Shaleitian uplift was influenced both by element coupling of the S2S systems and diagenesis. The faulted-gentle-slope was characterized by high elevation of source rocks and catchment area, which developed large scale of depositional systems and sandbodies along the fault break zones. The sandstone in this kind of S2S systems was high quality reservoirs with high maturity of component and texture, shallow buried depth, weak mechanical compaction, and abundant secondary porosity. However, other S2S systems including faulted-steep-slope, gentle-slope, and faulted-trough developed less high quality reservoirs. |
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