密度及泊松比参数叠前地震反演技术应用研究

Application of Density and Poisson-ratio Parameters form Prestack Seismic Inversion

叠前地震反演在油气藏描述过程中具有重要作用,反演得到的多种参数成果可以对储层和流体进行综合分析,其中密度和泊松比参数对油气的敏感性较高。重点讨论了影响密度和泊松比参数叠前地震反演效果的关键技术,包括叠前地震反演基本原理、反演可行性分析、叠前多参数反演及反演成果检测油气效果分析。应用该项技术对新疆排2区块进行叠前地震反演,反演结果所提供的2口钻井均获工业油流,反映了该项技术的良好应用效果。

Prestack inversion had an important role in reservoir description.A variety of parameters from inversion could be used to comprehensively analyze the reservoirs and fluids,of which the density and Poisson's ratio parameters were highly sensitive to oil and gas.The key techniques influencing the density and Poisson-ratio parameters of prestack inversion were emphatically discussed,including the basic principles of pre-stack inversion,the feasibility analysis of pre-stack inversion,the prestack inversion of multi-parameter,analysis of the inversion results.The prestack inversion is used in Block Pai2 of Xinjiang Oilfield,2 wells given in the result have industrial oil flow,it provides a good application effect.