黑龙江省东部中生代含煤盆地深盆气成藏分析
Journal of Heilongjiang Institute of Science and Technology(2005)
Abstract
深盆气属于非常规能源矿产.鸡西盆地具备了深盆气形成的基本地质条件,即煤系、暗色泥岩厚度大,有机质丰富,热演化程度高,生气强度大,气源丰富;致密砂岩储层发育,储层孔隙度平均值为3.00%~8.30%,渗透率绝大部分小于0.1×10-3μm2,具有低孔、低渗特点;构造匹配、保存条件较好.根据该地质条件,认为鸡西盆地深盆气可能的成藏模式为构造斜坡分布,北部鸡东坳陷区、南部穆棱坳陷为深盆气分布有利区,具有较好勘探前景.同时,探讨了气水倒置、压力异常、普遍含气等深盆气特征方面存在的有关问题.
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Key words
deep basin gas,target area,formation conditions,Heilongjiang
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