层状分频构形反演技术的研究与应用——以苏76区块为例

Research and application of layered frequency⁃division configuration inversion technology:A case study of Su 76 block

致密油气藏开发是当前油气开发的重要组成部分,常规的测井约束反演和地质统计学反演存在一定的局限,其反演精度无法满足非均质性强的储层精细刻画要求。层状分频构形反演技术是针对层状、准层状介质的一种非线性反演技术,通过分频建模、属性建模实现,为此介绍了层状分频构形反演的基本原理和实现过程,论述了层状分频构形反演在苏76区块的应用效果。该技术在苏76区块的应用结果表明,层状分频构形反演对薄储层的预测具有较高的吻合率,能够有效刻画砂体空间展布,是进行井位部署的可靠依据。

Tight reservoir development is an important direction of oil and gas development.Conventional log constrained inversion and geostatistical inversion have some limitations,and their inversion accuracy can not meet the needs of fine reservoir characterization.Layered frequency division configuration inversion is a nonlinear inversion technique for layered and quasi-layered media.It is realized by frequency-division modeling and attribute modeling.This paper introduces the basic principle and realization process of layered frequency-division configuration inversion,and discusses the application effect of layered frequency-division configuration inversion in Su 76 block.The application results show that the layered frequency-division configuration inversion has a high coincidence rate for thin reservoir prediction.It can describe the spatial distribution of sand body effectively,and it is a reliable basis for well site deployment.