湖盆砂体类型
SANDBODIES IN LAKE BASIN
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摘要: 一、概述我国中新生代时期,随着陆地的扩大,湖泊十分发育。其中相当多的湖泊是长期继承性发育的大型构造湖泊,面积大,沉陷深,深湖区持续时间长,沉积了巨厚的富含有机质的暗色泥(页)岩,形成良好的生油层。与生油层邻近的有孔隙的各种岩体,都可以成为油气储集的场所,尤其是砂岩体。目前我国发现的多数油气田的储层,是湖盆中沉积的砂岩体。Abstract: Lakes developed well in China as the continent eapaaded is the Mesozoic and Ce- aozoic eras. Quite many lakes were large structural Iakes with long developing his- tort'. T hick dark-colored mudstoaes(or shales)rich in organic matter were deposited in deep w ater area and formed good source rocks. Various porous rocks neighbouring to them could form oil-gas reserviors, is which sandbodies is lake basics were most advantageaeous to the oil-gas accumulation as found so far in China.
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[1] 吴泉绮，1981,湖泊沉积相的划分，石油勘探与开发，2期。 [2] 昊崇绮，1983，构造湖盆三角洲与油气分布，沉积学报，1卷1期。 [3] 吴崇绮，1985，对国外浊流沉积和扇三角洲沉积研究的评述，“浊流沉积和扇三角洲”译文专集，石油工业出版社。 [4] 蔺毓秀，1983，试论松辽大型陆相湖盆水进三角洲沉积相，石油实验地质，4期。 -
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