利用地震多属性技术进行储层预测与评价——以东濮凹陷濮城地区沙一段为例
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摘要
东濮凹陷濮城地区沙一段有利储层厚度薄且分布面积广,层间发育的盐岩层对地球物理信息具有较强屏蔽作用,导致该层段岩性油气藏隐蔽性较强。以研究区石油地质特征分析为基础,应用高精度三维地震资料解释技术与沉积相分析相结合,针对濮城地区沙一段陆相湖泊的沉积模式及砂泥岩薄互层和盐岩的特点,在最佳时窗范围内对不同层段、不同类型的地震属性进行筛选和优化,在此基础上进行储层预测并开展综合地质评价。通过该技术的应用,储层预测取得了较为理想的效果,在濮城地区沙一段上亚段落实了4个砂体,其中P1-400块目前已经获得突破。在此基础上落实了濮城地区勘探有利相带。
The dominant reservoir in Sha I member of Pucheng area of Dongpu sag is thin and widely distributed.The stratigraphic reservoir in this formation can not be discerned clearly due to the salt bed that has blocked the geophysical information.By analyzing petroleum geological characteristic in study area,and using high precision seismic data interpretation and sediment facies analysis, and taking account of the terrestrial lake sedimentary model and features of interbedded thin sand-mud-salt in Sha I member of Pucheng area,we filter and optimize seismic attribute that have different segment and stratum type at the best time window so as to develop the reservoir forecasting and integrated geological estimation.The reservoir forecasting obtains better performance by using this technique for four sand bodies within Sha I member in Pucheng area.The P1-400 block has obtained breakthrough so far.The favorable exploration area is therefore based on this technique.
The dominant reservoir in Sha I member of Pucheng area of Dongpu sag is thin and widely distributed.The stratigraphic reservoir in this formation can not be discerned clearly due to the salt bed that has blocked the geophysical information.By analyzing petroleum geological characteristic in study area,and using high precision seismic data interpretation and sediment facies analysis, and taking account of the terrestrial lake sedimentary model and features of interbedded thin sand-mud-salt in Sha I member of Pucheng area,we filter and optimize seismic attribute that have different segment and stratum type at the best time window so as to develop the reservoir forecasting and integrated geological estimation.The reservoir forecasting obtains better performance by using this technique for four sand bodies within Sha I member in Pucheng area.The P1-400 block has obtained breakthrough so far.The favorable exploration area is therefore based on this technique.
引文
[1]李明,侯建华.岩性地层油气藏地球物理勘探技术与应用[M].北京:石油工业出版社,2005.
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[4]孙淑艳,谢刚.多属性综合判别三角洲亚相方法——以临南洼陷双丰三角洲为例[J].石油地球物理勘探,2009,44(1):83- 85.
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[9]毕俊凤.地震多属性加权融合显示技术在宣汉—达县地区的应用[J].油气地质与采收率,2008,15(2):75-77.
[2]凌云研究小组.叠前相对保持振幅、频率、相位和波形的地震数据处理与评价研究[J].石油地球物理勘探,2004,39(5):543- 552.
[3]何碧竹,周杰,汪功怀.利用多元地震属性预测储层信息[J].石油地球物理勘探,2003,38(3):258-262.
[4]孙淑艳,谢刚.多属性综合判别三角洲亚相方法——以临南洼陷双丰三角洲为例[J].石油地球物理勘探,2009,44(1):83- 85.
[5]刘书会.薄层属性分析中存在的问题及解决方法——以东营凹陷梁108地区滩坝砂岩为例[J].油气地质与采收率,2006,13 (2):56-58.
[6]凌云研究小组.应用振幅的调谐作用探测地层厚度小于1/4波长地质目标[J].石油地球物理勘探,2003,38(3):268-274.
[7]凌云研究小组.基本地震属性在沉积解释环境中的应用研究[J].石油地球物理勘探,2003,38(3):642-653.
[8]黄绪德.薄层陷频法[J].勘探地球物理进展,2002,25(3):1-6.
[9]毕俊凤.地震多属性加权融合显示技术在宣汉—达县地区的应用[J].油气地质与采收率,2008,15(2):75-77.
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