北三台地区用地震资料进行泥岩压实和油气运移研究

A STUDY ON MUDSTONE COMPACTION AND OIL/GAS MIGRATION BY SEISMIC DATA IN THE BEISANTAI AREA

刘福宁

Liu Funing

南海西部石油公司 湛江 524057

Nanhai West Oil Corporation

经过对北三台地区声波测井、垂直地震剖面、叠加速度谱等速度资料的对比,分析了岩性和孔隙流体性质对地震速度的影响,认为用地震资料可以进行泥岩压实和油气运移研究。根据等效深度法,用地震速度资料计算地层流体压力,从而分析水动力变化,结合具体地质情况,推测油气运移的趋势和可能的聚集带。

The author of this paper studied the effects of lithology and the property of pore fluids on seismic velocity through the analysis of the data of acoustic loggings, vertical seismic sections and stacking velocity. It is suggested that the analysis can be carried out on the mudstone compaction and oil/gas migration by using seismic data and information. Based on the calculations of the formational fluid pressure by the data of seismic velocity with equivalent depth method, the hydrodynamics can be analysed. Finally, the orientation of oil/gas migration and possible oil/gas accumulation belts could be inferred with combination of the geological background in a certain area.

https://doi.org/10.11781/sysydz199301074