埕东凸起北坡馆陶组岩性油气藏储层特征及预测技术

埕东凸起北坡构造简单,断层不发育,馆陶组上段油藏为典型的岩性油藏。该区油气储层物性明显优于邻近其他砂层组储层;储集层含油后地震速度降低100~150m／s,围岩有高速和低速两种类型;含油砂体为强振幅反射等特征。应用水平切片、地震属性参数分析、相干分析、频谱分解等技术,预测了埕东凸起北坡馆陶组上段河道砂体和判识了砂体的含油性,取得了较好的效果。

Reservoir characteristic and prediction technique of lithological hydrocarbon deposit of Guantao formation in the northern slope of Chengdong arch

l reservoir of upper Guantao formation is typical lithological one with simple structure and undeveloped faults in northern slope of Chengdong arch. Its reservoir physical properties are obviously advantageous over other adjacent ones. Seismic velocity in oil-bearing reservoirs reduced 100 ~ 150 m/s. The enclosing rocksinvolved high-and low-velocity types. Strong amplitude reflection feature appears in oil-bearing sandbody. Using horizontal slice, seismic attribute parameter analysis, coherent analysis, spectral separability and other technologies predicted the channel sandbodies and identified their oil-bearing probability of upper Guantao formation in northern slope of Chengdong arch. Satisfied result is achieved.