收稿日期: 2006-01-20
修回日期: 2006-02-16
网络出版日期: 2006-04-20
MICROFACIES ANALYSIS AND SUBTLE RESERVOIR EXPLORATION XINNONG REG ION, QIANJIANG DEPRESSION
Received date: 2006-01-20
Revised date: 2006-02-16
Online published: 2006-04-20
郭精义,杨占龙,黄刚,杨立国 . 潜江凹陷新农地区沉积微相特征与岩性油气藏[J]. 天然气地球科学, 2006 , 17(2) : 249 -255 . DOI: 10.11764/j.issn.1672-1926.2006.02.249
Based on drilling well, log and seismic data, with the introduction of microfaci es, the author systemically studied the microfacies in horizon and vertical of Q ianjiang Formation, Lower Tertiary, Xinnong, Qianjiang Depression of Jianghan Ba sin. Study shows that there are two main sediment origins and one sub-sediment origin. One of the main sediment origins, which come from NE, forms a fan-delta sandstone body, and the other main sediment origin, which comes from NW, forms a delta sandstone body. The sub-sediment origin, which comes from SSW, forms a little delta sandstone body. All these delta sandstone bodies mainly composed of fluvial channel, channel bar and plain sand. On the background of nose-uplift and slope, many subtle traps are formed in this area. With the existing oil expl oration result, the author think there are good subtle reservoir potential in th e study area.
Key words: Microfacies; Delta sandstone body; Subtle reservoir; Xinnong; Qianjiang depression.
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