碳酸盐岩储层非均质性预测技术——以华北河西务地区碳酸盐岩储层为例
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摘要
冀中拗馅廊固凹陷河西务构造带发现和探明的古潜山油气藏为古生界奥陶系碳酸盐岩储层,其储集空间以孔洞、裂缝为主,非均质性强,物性横向变化较大,且裂缝是影响储集性能的主导因素,因此裂缝预测对该区潜山油气藏的成藏条件分析和预测等起至关重要的作用。本文基于二次三维采集地震资料,在河西务构造带中北部地区,利用相干、体曲率、振幅和频率等多种地震属性研究奥陶系碳酸盐岩储层缝洞特征,预测和刻画储层缝洞体系的空间分布规律,划分储层发育有利区带。该区实钻结果表明,河西务构造带碳酸盐岩储层裂缝发育,油气显示良好,证实了本文所述碳酸盐岩储层特征预测技术的有效性。
Buried hill reservoirs of Hexiwu structure belt of Langgu sag in Jizhong Depression,which had been discovered and proved,are Paleozoic Ordovician carbonate reservoirs with many caves and fissures.They have the following characteristics: strong heterogeneity,lateral variation in properties.The fissures are the most important predominant.So fracture prediction plays a vital role on accumulation conditions analysis and prediction of hill reservoirs in this area.Based on multi-attributes,such as coherent data,body curvature data,amplitude and frequency from new 3D seismic data,we predict and characterize the spatial distribution of reservoir's caves and fissures,and delineate favorable zones for development in the central north of Hexiwu structure belt.The drilling results show that the carbonate reservoirs developed many fissures with good hydrocarbon show,and that confirms our study is successful.
Buried hill reservoirs of Hexiwu structure belt of Langgu sag in Jizhong Depression,which had been discovered and proved,are Paleozoic Ordovician carbonate reservoirs with many caves and fissures.They have the following characteristics: strong heterogeneity,lateral variation in properties.The fissures are the most important predominant.So fracture prediction plays a vital role on accumulation conditions analysis and prediction of hill reservoirs in this area.Based on multi-attributes,such as coherent data,body curvature data,amplitude and frequency from new 3D seismic data,we predict and characterize the spatial distribution of reservoir's caves and fissures,and delineate favorable zones for development in the central north of Hexiwu structure belt.The drilling results show that the carbonate reservoirs developed many fissures with good hydrocarbon show,and that confirms our study is successful.
引文
[1]马中高.P波资料反演裂缝方法及实例.石油地球物理勘探,2003,38(5):517～521Ma Zhong-gao.Fracture inversion using P-wave re-flection data and cases.OGP,2003,38(5):517～521
[2]Satinder Chopra&Kurt J Marfurt.Seismic attributesfor prospect identification and reservoir characteriza-tion.Geophysical Developments,No 11,SEG,2007
[3]贺振华,胡光岷,黄德济.致密储层裂缝发育带的地震识别及相应策略.石油地球物理勘探,2005,40(2):190～195He Zhen-hua,Hu Guang-min,Huang De-ji.Seismic i-dentification of fracture-developed zone in dense reser-voir and relative strategy.OGP,2005,40(2):190～195
[4]陈霞,徐辉.华北地台奥陶系碳酸盐岩储集岩成因类型与展布.沉积学报,1994,12(9):47～55Chen Xia,Xu Hui.The Ordovician carbonate reser-voir,genetic types and spread in North China platform.Acta Sedimentologica Sinica,1994,12(9):47～55
[5]洪月英,韩天宝,秦宏国.华北河西务地区碳酸盐岩储层叠前地震定量预测.内部成果报告,中国石油东方地球物理公司地质研究院,2001,30～49
[2]Satinder Chopra&Kurt J Marfurt.Seismic attributesfor prospect identification and reservoir characteriza-tion.Geophysical Developments,No 11,SEG,2007
[3]贺振华,胡光岷,黄德济.致密储层裂缝发育带的地震识别及相应策略.石油地球物理勘探,2005,40(2):190～195He Zhen-hua,Hu Guang-min,Huang De-ji.Seismic i-dentification of fracture-developed zone in dense reser-voir and relative strategy.OGP,2005,40(2):190～195
[4]陈霞,徐辉.华北地台奥陶系碳酸盐岩储集岩成因类型与展布.沉积学报,1994,12(9):47～55Chen Xia,Xu Hui.The Ordovician carbonate reser-voir,genetic types and spread in North China platform.Acta Sedimentologica Sinica,1994,12(9):47～55
[5]洪月英,韩天宝,秦宏国.华北河西务地区碳酸盐岩储层叠前地震定量预测.内部成果报告,中国石油东方地球物理公司地质研究院,2001,30～49
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