利用地震属性预测柴达木盆地三湖地区第四系生物气藏
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摘要
第四系生物气勘探是世界天然气勘探领域的难点。柴达木盆地三湖地区第四系地层弱成岩、砂泥岩薄互层及地层普遍含生物气的特殊地质特征,加上地震资料受多种异常的影响,如何开展三湖地区生物气藏的地震含气检测,一直是该地区天然气勘探的一个难点。在分析三湖地区特殊地质及地震异常特征的基础上,经过分析研究,认为利用能量加权瞬时频率属性可以预测三湖地区的生物气藏,并经过钻探得到了证实,为该地区生物气藏的预测提供了一种较为实用的方法。
Quaternary biogas exploarion is a global question.Since there are special geological characteristics of weak diagenesis,thin sand and mud interbed,and biogas show,as well as abnormal seismic data,how to detect Quaternary biogas is difficult in Sanhu region,Qaidam basin.Based on integration of special geology and abnormal seismic features,energy weighted instantaneous frequency is a valid method to predict lithologic biogas pool in Sanhu area.This valid method proved by drilled well would make a significant contribution to predict biogas pool in Sanhu area.
Quaternary biogas exploarion is a global question.Since there are special geological characteristics of weak diagenesis,thin sand and mud interbed,and biogas show,as well as abnormal seismic data,how to detect Quaternary biogas is difficult in Sanhu region,Qaidam basin.Based on integration of special geology and abnormal seismic features,energy weighted instantaneous frequency is a valid method to predict lithologic biogas pool in Sanhu area.This valid method proved by drilled well would make a significant contribution to predict biogas pool in Sanhu area.
引文
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[2]Dang Yuqi.The conditions for biogas accumulation in Qaidambasin[J].Xinjiang Petroleum Geology,2003,24(5):374-378.[党玉琪.柴达木盆地生物气成藏条件[J].新疆石油地质,2003,24(5):374-378.]
[3]Shang Yongsheng.Research for Quaternary hydrocarbon de-tection in Qaidam basin[J].Progress in Geophysics,2007,22(3):831-835.[尚永生.柴达木盆地第四系烃类检测研究[J].地球物理学进展,2007,22(3):831-835.]
[4]Zhang Deling.Discussion for seismic character and geology condi-tion of gas reservoir in the Sanhu depression[J].Oil Geophysi-cal Prospecting,2000,55(7):67-73.[张德林.三湖地区天然气藏的地震信息特征与地质条件的研讨[J].石油地球物理勘探,2000,55(7):67-73.]
[5]Hui Rongyao,Li Benliang,Ding Anna,et al.Expiorational prespec-tive of lithologic gas pool in the Sanhu depression of the Qidambasin[J].Natural Gas Geoscience,2005,16(4):443-448.[惠荣耀,李本亮,丁安娜,等.柴达木盆地三湖凹陷岩性气藏的勘探前景[J].天然气地球科学,2005,16(4):443-448.]
[6]Zhang Shaosheng.Seismic abnormal analysis of the Sanhu de-pression in Qaidam basin[J].Natural Gas Industry,2007,27(supplement A):176-177.[张绍胜.柴达木盆地三湖地区地震异常分析[J].天然气工业,2007,27(增刊A):176-177.]
[7]Huang Yunfeng,Yang Zhanlong,Guo Jingyi,et al.Seismic at-tribute analysis and application in subtle traps exploration[J].Natural Gas Geoscience,2006,17(5):739-742.[黄云峰,杨占龙,郭精义,等.地震属性分析及其在岩性油气藏勘探中的应用[J].天然气地球科学,2006,17(5):739-742.]
[8]Liu Qiying.Oil/Gas Prediction Using Various Seismic Informa-tion[M].Beijing:Petroleum Industry Press,1994:306-310.[刘企英.利用地震信息进行油气预测[M].北京:石油工业出版社,1994:306-310.]
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