天然气地球科学 ›› 2020, Vol. 31 ›› Issue (7): 970979.doi: 10.11764/j.issn.1672-1926.2020.02.007
Xing LI(),Jun GAN,Xi-bin YANG,Gang LIANG,Zi-ling WANG
摘要:
琼东南盆地深水东区近年来有较大的天然气勘探突破,但天然气运移表征方面的研究还比较欠缺,制约了进一步勘探成效。通过深水东区气源对比、天然气运移路径及成藏定量表征等分析,明确了深水东区前古近系古潜山天然气运移成藏机理。研究表明,深水东区古近系古潜山天然气主要来源于松南—宝岛凹陷近凹—斜坡带高效生烃灶,在超压和浮力作用下通过大型入洼构造脊连片滨海相砂岩、潜山砂质风化壳和风化裂缝带复合输导体系优势聚集,并基于流体势和输导体系差异定量计算指出往南部松南低凸起是主运移方向,认为深水东区天然气勘探最有利区块为靠近斜坡带的Y1区古潜山。
中图分类号:
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