油气藏勘探开发中,含煤储层地震响应信息被煤层强反射遮掩,提高地震分辨率处理是含煤薄储层预测的有效方法之一.针对含煤薄储层提出并采用地质约束非线性反演煤层衰减方法削弱煤层地震响应,凸显储层反射信息.在此基础上利用空间正则化的井控多道反褶积方法保持地震反射信息的空间连续性,有效提高地震资料的分辨率.该技术组合在鄂尔多斯盆地D气田资料解释性处理中取得了明显的应用效果,气田开发井钻井结果证明其能够有效解决含煤薄储层预测问题.%During oil and gas reservoir exploration and development,for the thin hydrocarbon reservoir with coal seam,seismic reservoir response is overwhelmed by strong reflections from coal seam,so seismic data processing aiming at improving reservoir resolution is necessary.In this paper,we proposed the geological constrained nonlinear inversion method to attenuate the reflections from coal seam and to strengthen the seismic reflections from thin reservoir.Based on this,we proposed well-controlled multi-trace deconvolution to improve seismic data resolution and keep its spatial continuity well.The combination technique has been tested in D gas field in Ordos Basin and effectively solved the prediction problem of thin gas reservoir with coal seam,which has been verified by drilling results.
展开▼
