三湖地区天然气藏的地震信息特征与地质条件的研讨

Discussion on seismic information character and geologic condition of gas accumulation in Sanhu region.

柴达木盆地东部三湖地区第四系地层蕴藏着丰富的天然气藏 ,在地震剖面上出现了“负背斜”、暗点和低频等显著反射特征 ,并构成地震剖面上壮观的天然气藏地震信息群。盆地发育时间短 (主要集中在第四纪 )、成岩时间短、成岩程度低的三角洲沉积形成了这里优越的聚集条件。

The Quaternary formation in Sanhu region of eastern of Chaidamu Basin is rich in gas accumulation. It appears outstanding reflection characters such as “negative anticline”, dim spot and low frequency etc and constitutes magnificent seismic information group about gas accumulation. The delta deposit characterizing short basin growth time (it's mainly concentrated onto Quaternary), short lithogenous time and low lithogenous level forms an excellent accumulation condition here. Gas with high abundant accumulation and a variety of loose stratum are the reasons for notable distinct seismic information on seismic profiles in Sanhu region.