| 摘要: |
| 北黄海盆地东部坳陷中生界砂岩以细砂-粉砂岩为主,夹少量砂砾岩,岩石学类型以长石砂岩、长石岩屑砂岩为主,储集空间以次生溶蚀孔及裂缝为主,孔喉结构为细小孔隙、细喉-微细喉,属于低孔低渗储层。通过对物性影响因素分析,发现裂缝、沉积相带、成岩作用是控制本区砂岩储层质量的主要因素。 |
| 关键词: 北黄海 中生界 断裂带 次生孔隙 |
| DOI： |
| 附件 |
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| 基金项目:国家科技重大专项(2008ZX05023) |
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| Characteristics of the Mesozoic reservoirs in the eastern depression of the Northern Yellow Sea Basin |
| WANG Qiang, WANG Ying-bin, ZHANG You |
(1. School of Energy Resources, China University of Geosciences, Beijing 100083, China;
2. Tianjin Branch, CNOOC, Tanggu 300452, China) |
| Abstract: |
| The emphasis in the present paper is placed on eastern depression of the Northern Yellow Sea Basin as a Mesozoic-Cenozoic sedimentary basin.In the basin,the lithology contains fine-grained sandstone to siltstone intercalated with minor glutenite.The rock types include feldspar sandstone and feldspathic litharenite.The reservoir spaces are characterized by secondary solution openings and fissures,microporosity,fine throat to microthroat,indicating the low-porosity and low-permeability reservoirs.The fissures,sedimentary facies,and diagenesis are believed to be the main controls on the reservoir quality of the sandstones in the study area.The fissure zones and secondary porosity zones are suggested to be the favourable areas for future exploration. |
| Key words: Northern Huanghai Basin Mesozoic fault zone secondary porosity |
