绥滨坳陷滨参1井地震地质层位标定及其地质意义

Seismic geology horizon calibrating of Bincan well 1 in Subin depression and its geological significance

为有效解决地震解释中层位追踪的闭合,经岩芯、测井数据、速度资料、属性剖面、合成记录制作等分析,对滨参1井重新进行了地震地质层位的标定。与前人标定的结果比较,基底顶面T5反射时间由2 100 ms调整为1 843 ms;城子河组顶面T4-2的反射下调一个相位。依据本次标定结果新的解释方案,绥滨组+东荣组由原解释方案的全区分布改为局部分布,且向北有增厚趋势;对城子河组顶面埋深由1 692 m调整为2 246 m,城子河组厚度的计算也相应发生变化。

In order to solve efficiently the problem of tracking and closing horizons, the authors calibrated the seismic geological horizon in Bincan well 1 again by analyzing drilling core, logging data, velocity data, attributive profile, synthetic record, etc. Compared with the results calibrated previously, the reflection T5 of the basement top is changed from 2 100 ms to 1 843 ms; reflection T4-2 of Chengzihe Formation top is declined for one seismic phase. According to the new calibration results, the distributions of Suibin Formation and Dongrong Formation are reconsidered as local in nature, but regional; and their thickness probably increased northward. The buried depth of the Chengzihe Formation top is changed in account from 1 692 m to 2 246 m, and correspondingly, the thickness of Chengzihe Formation is also changed in account.