建南地区生物礁滩储层预测的几点认识  

SOME UNDERSTANDING TO PREDICT BIOREEF SHOAL RESERVOIR IN JIANNAN AREA

作　　者：秦军[1] 陈玉明[1] 伍宁南[1] 

机构地区：[1]中国石化江汉油田分公司勘探开发研究院

出　　处：《天然气勘探与开发》2010年第3期12-15,40,共5页Natural Gas Exploration and Development

摘　　要：晚二叠世长兴期,建南地区在台地隆升的高部位和台地边缘沉积了生物礁、生屑滩。但生物礁滩的预测一直是油气勘探的难点。通过分析影响礁滩发育的地震响应特征,建立正演模型,并利用波阻抗反演、含油气检测等技术确立本区长兴组礁滩相储层的预测模式,同时结合地质资料,提出将白云岩分布范围作为一个重要参考指标,对预测结果进行合理解释并提出有利勘探区带。During the late Permian Changxingian period,Jianan area was of transgressive system tract (TST);bioreef and bioclast bank shoal deposited at higher portion and platform margin of platform uplift whereas siliceous mudstone deposited at lower portion.Bioreef reservoir is a kind of high-quality reservoir.Therefore,it is illustrated that Jiannan area may have a huge hydrocarbon exploration prospect due to a discovery of Changxing Formation bioreef reservoir.However,to predict bioreef is tough.In this paper,the seismic response characteristics affecting bioreef development are analyzed;a forward model is established;a prediction mode of Changxing Formation bioreef is determined by means of wave impedance inverse and hydrocarbon detection;a suggestion that dolomite distribution can be taken as an important reference index is presented;and the predicted result is reasonably interpreted and then a favorable exploration play is presented.

关 键 词：生物礁滩 波阻抗反演 正演模型 含油气检测 

分 类 号：P618.13[天文地球—矿床学]