摘要
To predict complex reservoir spaces(with developed caves,pores,and fractures),based on the results of full-azimuth depth migration processing,we adopted reverse weighted nonlinear inversion to improve the accuracy of porous reservoir prediction.Scattering imaging three-parameter wavelet transform technology was used to accurately predict small-scale cave bodies.The joint inversion method of velocity and amplitude anisotropy was developed to improve the accuracy of small and medium-sized fracture prediction.The results of multiscale fracture modeling and characterization,interwell connectivity analysis,and connection path prediction are consistent with the production condition.Finally,based on the above prediction findings,favorable reservoir development areas were predicted.The above ideas and strategies have great application value for the efficient exploration and development of complex storage space reservoirs and the optimization of high-yield well locations.
针对复杂储集空间油气藏孔隙,洞穴,裂缝预测难题,以全方位局部角度域深度偏移处理方法成果数据为基础,在孔隙型储层预测方面,采用了反向加权非线性反演改善了物性预测效果;在小尺度洞穴体预测方面,首次在研究区采用了散射成像三参数小波变换技术实现了小尺度洞穴体预测;在裂缝预测方面,研发了振幅和速度各向异性联合反演方法提高了中小尺度裂缝预测的精度,通过多尺度裂缝建模与表征,开展井间连通性分析及连通路径预测,预测结果与开发生产情况相符。最后,结合上述研究成果,预测了有利储层发育区,为研究区井位部署提供依据。上述思路与对策对于复杂储集空间油气藏的高效勘探开发及高产井位优选具有很大应用价值与借鉴意义。
