塔河油田奥陶系缝洞型碳酸盐岩储层预测研究
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摘要
针对塔河油田奥陶系碳酸盐岩缝洞型储层的结构特点,以地质、钻井、测井及生产测试等资料分析为出发点,以各类储层地震响应为基础,分析了有利储层的地震属性特征、地震反射结构及波形相关特点,最终将有利储层综合划分为两类,并建立了各自的地震综合预测模式:Ⅰ类储层表现为串珠状、条带状振幅变化率异常和残丘高点+杂乱反射特征,相位角变化大于20°;Ⅱ类储层为弱或强振幅、高振幅变化率、弱相干、低速度和多种反射结构。提高了塔河油田及其周缘的钻井成功率。
In view of the characteristics of Ordovician carbonatite reservoir of fissure-cave type in the Tahe oil field,we studied the seismic attributions,reflection configuration and correlation of waveform in the area where the reservoir is favourable.Based on the information of geology,well bore,well logging and production test,we classified the profitable reservoir into two groups and established their respective prediction mode.The first-class reservoir exhibits moniliform and banded anomalies of the amplitude change rate,reflectance signature from hammock,and phase angle varying more than 20 degrees.The second-class reservoir shows low or high amplitude,high amplitude change rate,poor coherence,low speed and a variety of reflection configuration.This work improved the success rate in well boring obviously.
In view of the characteristics of Ordovician carbonatite reservoir of fissure-cave type in the Tahe oil field,we studied the seismic attributions,reflection configuration and correlation of waveform in the area where the reservoir is favourable.Based on the information of geology,well bore,well logging and production test,we classified the profitable reservoir into two groups and established their respective prediction mode.The first-class reservoir exhibits moniliform and banded anomalies of the amplitude change rate,reflectance signature from hammock,and phase angle varying more than 20 degrees.The second-class reservoir shows low or high amplitude,high amplitude change rate,poor coherence,low speed and a variety of reflection configuration.This work improved the success rate in well boring obviously.
引文
[1]Gu J Y,Zhou X X,Liu W L,et al.Distribution pattern of karst and oil in buried hill in Lunnan area in Tarim basin[M].Beijing:PetroleumIndustry Press,2001:52-71(in Chi-nese).
[2]Qu S L,Li Q,Yao H,et al.Present situation and prospects of geophysics home and abroad[M].Beijing:PetroleumIn-dustry Press,2003:33-41(in Chinese).
[3]Lingyun Research Group.Basical seismic attributions are ap-pliedininterpretation depositional environment[J].Oil Geo-physics Prospecting,2003,38(1):642-653(in Chinese).
[1]顾家裕,周兴熙,刘雯林,等.塔里木盆地轮南潜山岩熔及油气分布规律[M].北京:石油工业出版社,2001:52-71.
[2]曲寿利,李群,姚弘,等.国内外物探技术现状与展望[M].北京:石油工业出版社,2003:33-41.
[3]凌云研究组.基本地震属性在沉积环境解释中的应用研究[J].石油地球物理勘探,2003,38(1):642-653.
[2]Qu S L,Li Q,Yao H,et al.Present situation and prospects of geophysics home and abroad[M].Beijing:PetroleumIn-dustry Press,2003:33-41(in Chinese).
[3]Lingyun Research Group.Basical seismic attributions are ap-pliedininterpretation depositional environment[J].Oil Geo-physics Prospecting,2003,38(1):642-653(in Chinese).
[1]顾家裕,周兴熙,刘雯林,等.塔里木盆地轮南潜山岩熔及油气分布规律[M].北京:石油工业出版社,2001:52-71.
[2]曲寿利,李群,姚弘,等.国内外物探技术现状与展望[M].北京:石油工业出版社,2003:33-41.
[3]凌云研究组.基本地震属性在沉积环境解释中的应用研究[J].石油地球物理勘探,2003,38(1):642-653.
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