地震反演技术在生物礁(滩)储层预测中的应用  

APPLICATION OF SEISMIC INVERSION TECHNIQUE IN PREDICTING RESERVOIRS WITH ORGANIC REEF/BANK FACES

作　　者：周仲礼[1] 张艳芳[2] 冯赵剑 王权锋[1] 

机构地区：[1]成都理工大学数学地质四川省重点实验室 [2]成都理工大学能源学院 [3]川庆钻探工程公司地质勘探开发研究院

出　　处：《天然气工业》2008年第12期34-36,136-137,共3页Natural Gas Industry

摘　　要：新区由于勘探程度较低,使用宽带约束地震反演技术进行储层预测非常必要。在介绍了宽带约束稀疏脉冲反演技术的基本原理、实现方法以及反演流程的基础上,在四川盆地syb地区首次利用约束稀疏脉冲反演技术进行了储层预测,反演过程中运用2口井进行约束,将反演结果与井真实情况相对比,其下三叠统飞仙关组的飞二段、飞一段以及上二叠统长兴组的上段与钻井、测井解释储层吻合较好。根据反演结果圈定了礁(滩)发育带,并最终落实了钻井目标。该方法在勘探程度比较低的地方可以较准确地预测储层岩性和展布规律,对油气田的进一步勘探开发,以及降低勘探开发风险有一定的指导意义。Reservoir prediction with broadband-constrained seismic inversion technique is necessary in frontiers with low exploration maturity. Following the introduction of the basic principles,realization methods and inversion workflows of broadband-constrained sparse impulse inversion,this technique is used for the first time in reservoir prediction of the region syb,Sichuan basin. The data of two wells are used in inversion. Comparison of inversion results with real well data shows that the inversion results of the first and the second members of the Lower Triassic Feixianguan formation and the upper member of the Upper Permian Changxing formation matches well with the drilling and logging interpretations. Well-developed zones with organic reef/bank faces and drilling targets are defined according to the inversion results. This method can accurately predict lithology and distribution of reservoirs in areas with low exploration maturity,which becomes guidance for further exploration and risk mitigation.

关 键 词：储集层 预测 反演 合成地震记录 声阻抗 生物礁 四川盆地 

分 类 号：P631.4[天文地球—地质矿产勘探] P618.13[天文地球—地质学]