塔里木盆地轮南地区三叠系非均质薄砂岩储层预测  

Prediction of heterogeneous,thin Triassic sandstone reservoirs in the Lunnan area,Tarim Basin

作　　者：米信武 周成刚 田军 韩耀祖 李亚楠 肖冰清 MI Xin-Wu;ZHOU Cheng-Gang;TIAN Jun;HAN Yao-Zu;LI Ya-Nan;XIAO Bing-Qing(Korla Branch of GRI of BGP Inc.,CNPC,Korla 841000,China;School of Earth Sciences and Engineering,Xi'an Shiyou University School,Xi'an710065,China)

机构地区：[1]中国石油集团东方地球物理勘探有限责任公司研究院库尔勒分院,新疆库尔勒841000 [2]西安石油大学地球科学与工程学院,陕西西安710065

出　　处：《物探与化探》2025年第2期321-329,共9页Geophysical and Geochemical Exploration

基　　金：东方地球物理公司科研项目“面向超深碎屑岩储层渗流特性的地球物理表征方法研究”(11-16-2024)。

摘　　要：塔里木盆地轮南地区三叠系整体为陆相三角洲沉积体系,研究区内发育有三角洲平原、三角洲前缘和前三角洲等亚相,储层相变快,砂泥岩高频交互沉积,导致储层薄、非均质性强,为高精度储层预测带来极大困难。为此,本文以沉积岩石学、地震层序地层学为指导,开展地震、地质综合研究,并以等时层序解释为基础,结合地震相分析成果,建立岩相模型,约束叠前地质统计学反演过程,落实砂体空间展布特征。实际应用表明,该方法在提高非均质薄储层纵向分辨能力的同时,大幅降低了横向不确定性,预测结果与井上实钻及生产动态数据相吻合,可为油气藏高效开发提供支撑。The Triassic strata in the Lunnan area of the Tarim Basin represent a continental deltaic sedimentary system,with sedimentary subfacies including deltaic plain,deltaic front,and prodelta.The rapid phase transition of reservoirs and the high-frequency sandmudstone alternating deposition create thin,highly heterogeneous reservoirs,rendering high-precision reservoir prediction extremely challenging.Under the guidance of sedimentary petrology and seismic sequence stratigraphy,this study conducted comprehensive seismic and geological research.Then,based on isochronous sequence interpretation,as well as seismic facies analytical results,this study established a lithofacies model.By constraining the pre-stack geostatistical inversion process,this study determined the spatial distribution of sand bodies.The practical application demonstrates that the proposed method enhances the vertical resolution of heterogeneous,thin reservoirs while significantly reducing lateral uncertainty.The predicted results align with actual drilling and production performance data and thus can provide valuable support for the efficient exploitation of hydrocarbon reservoirs.

关 键 词：三叠系 非均质 薄砂岩 地震反演 储层预测 

分 类 号：P631.4[天文地球—地质矿产勘探]