地震沉积学及反演技术在Q606块沉积演化研究中的应用  

Application of Seismic Sedimentology and Inversion Technology in Sedimentary Evolution Research of Q606 Block

作　　者：董文波[1] DONG Wen-bo(Research Institute of Exploration and Development,Liaohe Oilfield Branch Company,China National Petroleum Corp.,Panjin 124010,Liaoning,China)

机构地区：[1]中国石油辽河油田分公司勘探开发研究院,辽宁盘锦124010

出　　处：《承德石油高等专科学校学报》2019年第2期1-4,共4页Journal of Chengde Petroleum College

基　　金：国家科技重大专项(渤海湾盆地辽河坳陷中深层稠油开发技术示范工程):2011ZX05053;中国石油天然气股份有限公司重大科技专项(辽河油田原油千万吨持续稳产关键技术研究):2012E-3001

摘　　要：以张强凹陷Q606区块为例提出了针对低井控程度地区的沉积演化研究思路和方法。以地震沉积学理论为指导,以地震反演技术为核心,首次引入波阻抗数据体地层切片对研究区沉积演化史进行了分析。研究结果表明:1)Q606区块沙海组下段早期发育扇三角洲平原和扇三角洲前缘沉积,洼陷区发育近岸水下扇沉积,随着沉积物持续供应,近岸水下扇范围逐渐扩大,晚期洼陷区被填平,随着湖平面上升,整体发育扇三角洲前缘沉积;2)基于地震沉积学原理,在单井相,连井相分析的基础上,通过波阻抗数据体地层切片分析岩性的横向变化,进而开展沉积学解释是低井控程度地区开展沉积演化研究的有效方法。Taking Q606 block in Zhangqiang sag as an example,this paper researches on the method of sedimentary evolution with low exploration degree.Based on seismic sedimentology,by applying inversion technology,the tectono-sedimentary evolution of Q606 block and sedimentary were studied.The results show that Q606 block mainly develop fan delta system in the early period of Shahai formation,including fan delta plain and fan delta front.Underwater fan system develops in the sag zone.As the sediment continue to accumulate,underwater fan range gradually enlarges.At the end of the bottom member of Shahai formation,the delta fan system develops because of the sag was filled and the lake level rises.Another conclusion is that we can research the sedimentary evolution by the impedance slice with the low exploration degree based on the seismic sedimentology principle and sedimentary facies analysis result.

关 键 词：张强凹陷 地震沉积学 地震反演 地层切片 沉积演化 

分 类 号：P618.13[天文地球—矿床学]