Predicting Thin Sandstone Reservoir by Using Seismic Separate Frequency Attribute——By Taking Wellblock Shun 9 of Tazhong Uplift in Tarim Basin for Example
Yang Shimin · Journal of Oil and Gas Technology · 2014
Wellblock Shun 9was located in Shun 1 3D work area in the tectonic unit of Shuntuoguole low uplift of Tazhong Uplift in Tarim Basin,the thickness of effective sandstone reservoir in the studied area was thin,plane distribution difference was big,wave impedance inversion and spectral whitening methods were used to predict reservoir distribution,its effect was not ideal.But statistical analysis of frequency spectrum series properties was closely related to the thickness of thin layer sandstone,thus,BP neural network was used as fusion method of separate frequency information for the inversion of effective sandstone reservoir thickness.Prediction results and drilling effective thickness of sandstone reservoir accords with higher degrees,it proves that this method is effective and reliable.