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龙深1井是松辽盆地南部英台断陷深层天然气勘探的突破井,其深层层位归属问题是英台断陷资源评价和储量预测的关键。利用岩电特征、井间对比、孢粉化石组合分析、井震结合等综合确定了龙深1井的深层地层分层,认识如下:龙深1井营城组主要是由两套较厚的火山岩(火成岩)与两套较薄的沉积岩组成,与上下地层岩、电、震特征差别明显;龙深1井营城组孢粉化石特征与上下地层差异明显,裸子植物花粉体积分数为65%、蕨类植物孢子体积分数为35%,且可与松辽盆地北部营城组地层进行对比;龙深1井营城组的顶底界分别为2 895 m和3 532 m,沙河子组未钻穿。
Longshen-1 well is a breakthrough well for deep natural gas exploration in the Yingtai rift in the southern part of Songliao Basin, and the problem of its deep horizon is the key to resource assessment and reserve prediction of the Yingtai Fault. The deep stratigraphic stratigraphy of Longshen-1 well is determined synthetically based on the characteristics of rock electrical engineering, comparison between wells, sporopollen assemblage analysis and well-seismic combination, etc. The understanding is as follows: Yingcheng Formation of Longshen-1 is mainly composed of two sets of thicker Volcanic rocks (igneous rocks) are composed of two sets of thin sedimentary rocks with obvious differences from the upper and lower strata of rock, electricity and seismic characteristics. The spore-pollen fossils of Yingcheng Formation in Longshen-1 well are obviously different from the upper and lower strata. The pollen volume fraction of gymnosperm is 65% , And the fern spore volume fraction is 35%, which can be compared with that of Yingcheng Formation in northern Songliao Basin. The top and bottom boundaries of Yingcheng Formation in Longshen 1 well are 2 895 m and 3 532 m, respectively Drill through.