基于倾角导向地层格架低频模型的火山岩相控反演研究  

Study of face-controlled inversion of volcanic rocks based on the low-frequency model of dip-steering stratigraphic framework

作　　者：齐英涵 曹磊[1] 周丹[2] 韩娇艳[1] 张红霞[1] QI Yinghan;CAO Lei;ZHOU Dan;HAN Jiaoyan;ZHANG Hongxia(Research Institute of Exploration and Development,Northeast Oil and Gas Branch of SINOPEC,Changchun 130062,China;SINOPEC Geophysical Research Institute Company Limited,Nanjing 211103,China)

机构地区：[1]中国石化东北油气分公司勘探开发研究院,长春130062 [2]中国石化石油物探技术研究院有限公司,南京211103

出　　处：《石油科学通报》2025年第1期65-74,共10页Petroleum Science Bulletin

摘　　要：近年来,众多勘探开发实例彰显出火山岩油气藏巨大的勘探潜力。长岭断陷的中基性火山岩更是展现出极为独特的地质特征,其横向分布广泛,纵向呈现多期叠置的复杂态势,火山机构内部结构错综复杂,储层的非均质性极为强烈。利用准确的低频模型对储层相控反演加以约束,成为制约火山岩油气藏高效开发利用的核心关键所在。本文将地震数据作为主变量,倾角导向等时地层格架作为第一协同变量,以岩相指示曲线作为第二协同变量,利用多变量协同克里金方法进行插值得到低频模型,优选波形指示模拟得到高分辨率火山岩相体。再利用岩相先验控制构建物性参数和弹性参数联合采样空间,基于贝叶斯-序贯高斯模拟方法实现对火山岩储层的物性预测。本方法充分整合现有条件下不同维度的数据,有效降低了预测结果的多解性,支撑龙凤山地区火山岩部署井位8口,物性预测平均吻合率为81.4%,充分证明了本方法的可靠性与有效性。In recent years,numerous exploration and development instances have conspicuously manifested the tremendous exploration potential of volcanic rock oil and gas reservoirs.The intermediate-basic volcanic rocks in the Changling fault depression exhibit highly distinctive geological characteristics,featuring extensive lateral distribution,complex multi-phase superimposition in the vertical direction,intricate internal structures of volcanic edifices,and extremely strong heterogeneity of reservoirs.Employing accurate low-frequency models to constrain the reservoir phase-controlled inversion has emerged as the key factor restricting the efficient development and utilization of volcanic rock oil and gas reservoirs.In this paper,seismic data is taken as the main variable,the dip-oriented isochronous stratigraphic framework as the first collaborative variable,and the lithofacies indicator curve as the second collaborative variable.The low-frequency model is obtained through interpolation using the multivariate collaborative Kriging method,and the high-resolution volcanic lithofacies body is optimized through waveform indicator simulation.Subsequently,the lithofacies prior control is utilized to construct the joint sampling space of physical properties and elastic parameters,and the physical property prediction of volcanic rock reservoirs is realized based on the Bayesian-Sequential Gaussian Simulation method.This approach fully integrates the data from different dimensions under the existing conditions,effectively reducing the multiplicity of solutions in the prediction results.It supports the deployment of eight well locations in the Longfengshan area,with an average coincidence rate of 81.4%for physical property predictions.This fully substantiates the reliability and validity of this method,laying a solid technical foundation for the subsequent exploration and development work of volcanic rock oil and gas reservoirs.

关 键 词：火山岩 多变量协同克里金 低频模型 相控波形指示反演 倾角导向 

分 类 号：P618.13[天文地球—矿床学] TE122[天文地球—地质学]