辽河西部凹陷北部地区隐蔽油气藏预测与成藏机制分析  

Prediction of subtle hydrocarbon reservoirs and pool-forming mechanism, northern part of western sag, Liaohe region

作　　者：李宏伟[1] 朱怡翔[1] 李胜利[1] 赵明[1] 

机构地区：[1]中国地质大学(北京)

出　　处：《石油勘探与开发》2003年第1期44-46,共3页Petroleum Exploration and Development

摘　　要：在辽河西部凹陷北部地区隐蔽油气藏的勘探中 ,利用有限的岩心、地震相信息分析含油储集层的成因 ;开展油源对比 ,确认储集层内油气来源 ;在分析储集层成因的基础上 ,运用地震储集层成像手段 ,预测了含油储集层的分布 ,进而剖析油气成藏机制。研究结果 ,油气并不是在构造最高部位聚集 ,而是受控于储集砂体的分布 ,因此油藏类型为隐蔽性较强的岩性油气藏 ,油气属自生自储成因。在此思路指导下 ,沿古河道走向扩边钻探取得了成功。图 6表 1参The distribution of subtle hydrocarbon reservoirs was discussed in this paper. Based on the very inadequate data of core and seismic facies, the genesis of hydrocarbon reservoirs was analyzed. In order to recognize the source of hydrocarbon, geochemical study on samples of oil and source rocks was also carried out. According to the genetic information of hydrocarbon reservoir, the distribution of hydrocarbon reservoirs was predicted through 3-D reservoir imaging, and the mechanism of hydrocarbon accumulation in the reservoirs was revealed that the petroleum wasn t controlled by the structure but mainly governed by the channel sand reservoirs, and the petroleum was sealed in the intra-channel mud, which indicates that the type of reservoir is nothing but stratigraphic reservoir. In the light of this prediction, the drilling well designed along the channel sand reservoirs was successful.

关 键 词：辽河西部凹陷 北部地区 隐蔽油气藏 预测 成藏机制 河道砂体 油源对比 地震储集层成像 储集层 

分 类 号：P618.130.2[天文地球—矿床学] TE12[天文地球—地质学]