【摘要】 鉴于生物礁内部因孔隙和孔洞非常发育而成为油气的有利富集场所,研究湘中拗陷棋梓桥组层礁、边缘礁和丘礁3种类型生物礁的发育特征及分布规律,分析生物礁在海侵体系域和高位体系域的发育特点,识别出3种生物礁沉积层序类型,总结湘中拗陷生物礁的沉积模式.研究结果表明,不同类型生物礁的发育与海平面的变化和基底的形态有密切的关系,可作为识别海平面变化的可靠标志;生物礁作为有利的油气储集带,可作为湘中拗陷下步油气勘探的主攻目标.更多还原

【Abstract】 The inner hole and porosity are very plenty,and could be filled by oil and gas.It is very important in practice to study the developing disciplinarian and sediment model of the reef.On the base of the study of the developing disciplinarian and distributing of the three kinds reef,such as the buildup reef,stratigraphic reef and edge reef,that the developing and distributing disciplinarian of the three kinds of reef in TST and HST,and the three kinds of reef sediment sequence,and the reef sediment models are put forward in this paper.The conclusion points out that the kinds of reef developing are closely associated with the sea level,indicating the sea level in past,and that the reef,as the favorable reservoir of oil and gas,will be main oil and gas exploration target in future.更多还原