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The Study on the Palaeogene Lacustrine Reefs in Jiyang Sag, Eastern Shandong Province
Author(s): 
Pages: 56-67
Year: Issue:  1
Journal: ACTA SEDIMENTOLOGICA SINICA

Keyword:  济阳坳陷生物礁岩石学储层油藏;
Abstract: 济阳坳陷局部地区古近系发育以藻礁为主的生物礁,作为一种高产油气的储集体,礁体呈复式,可分为礁核、礁前及礁后相.礁体在成分上以枝管藻、龙介虫等构成的藻白云岩为主,具有良好的储集性能.根据组成礁体的岩性特征,生物礁可分为藻礁、藻礁丘及藻生物层三种类型.其中藻礁储集性能最佳,对生物礁储层影响较大的成岩作用有白云岩化、同生胶结、大气渗流溶蚀及深埋藏溶蚀作用.生物礁油藏主要产于邻近洼陷的构造台地或边缘地区.根据构造、岩性及地层的匹配关系,可分为礁型地层、断块-岩性及岩性三种类型.
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