肖敦清,姜文亚,蒲秀刚,王娜,岳云福,孙超囡,代昆,滑双君
Xiao Dun-qing,Jiang Wen-ya,Pu Xiu-gang,Wang Na,Yue Yun-fu,Sun Chao-nan,Dai Kun,Hua Shuang-jun
摘要: 近年来随着勘探目标向中深层拓展,在渤海湾盆地歧口凹陷不仅发现大规模的石油资源,同时发现700多亿立方米的天然气资源。深层烃源岩热演化与储集层物性特征的差异,决定了深层常规、非常规气藏并存,且以4 700m深度为界,该深度以下主体为致密砂岩气。利用成因法、类比法等方法综合计算,歧口凹陷古近系常规天然气资源规模超过3 500×108m3,主要分布在板桥次凹,致密砂岩气资源量为1 760×108m3,主要分布在歧北次凹中深层。通过天然气成藏条件综合评价,进一步揭示了深层优质烃源岩、高演化程度和大规模砂体三大因素有利于天然气规模富集,是深层烃类资源的主要赋存状态。板桥斜坡深层、歧北斜坡深层为深层气勘探的有利目标区,尤其是处于气源中心区、具有一定构造背景、砂体发育的沙二段是深层气现阶段勘探最现实的领域。
中图分类号:
肖敦清, 姜文亚, 蒲秀刚, 王娜, 岳云福, 孙超囡, 代昆, 滑双君. 渤海湾盆地歧口凹陷中深层天然气成藏条件与资源潜力[J]. 天然气地球科学, 2018, 29(10): 14091421.
Xiao Dun-qing, Jiang Wen-ya, Pu Xiu-gang, Wang Na, Yue Yun-fu, Sun Chao-nan, Dai Kun, Hua Shuang-jun. Natural gas formation conditions and resource potential in mid-deep strata of the Qikou Sag,Bohai Bay Basin[J]. Natural Gas Geoscience, 2018, 29(10): 14091421.
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