YQ地区奥陶系碳酸盐岩岩溶储层地震属性预测
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摘要
YQ地区奥陶系地层碳酸盐岩储层发育,储集类型以岩溶孔洞、裂缝型为主。由于储层非均质性极强,横向变化快,加之溶洞受填隙物及填充程度的影响,使得储层预测的难度很大。从奥陶系碳酸盐岩储层的地球物理响应特征出发,形成1套以地震属性优选、多属性融合、三维像素属性雕刻等为主的地震预测技术流程。利用这些技术手段对奥陶系岩溶孔洞类储层、风化壳顶面储层进行了预测,对这2类储层在平面和空间上的分布特征进行了定性描述和分析,其结果与实钻情况吻合,取得了较好的应用效果。
In the Ordovician carbonate reservoirs in YQ area,karst cavities and fractures are dominant.The reservoirs are difficult to predict due to severe reservoir heterogeneity and drastic lateral changes as well as the effects of interstitial material and filling degree on cavities.Based on the characteristics of the geophysical response of the Ordovician carbonate reservoirs,a seismic prediction technology has been developed,including seismic attributes optimization,multi-attribute integration,and voxel attributes delineation.The technology has been applied to predict Ordovician karst reservoirs and top weathering crust reservoirs.The spatial distribution of the two types of reservoirs has been qualitatively described and analyzed,and the results coincide with practical drill data.
In the Ordovician carbonate reservoirs in YQ area,karst cavities and fractures are dominant.The reservoirs are difficult to predict due to severe reservoir heterogeneity and drastic lateral changes as well as the effects of interstitial material and filling degree on cavities.Based on the characteristics of the geophysical response of the Ordovician carbonate reservoirs,a seismic prediction technology has been developed,including seismic attributes optimization,multi-attribute integration,and voxel attributes delineation.The technology has been applied to predict Ordovician karst reservoirs and top weathering crust reservoirs.The spatial distribution of the two types of reservoirs has been qualitatively described and analyzed,and the results coincide with practical drill data.
引文
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[9]曹鉴华.RGB混频显示技术在某工区河道识别中的应用[J].勘探地球物理进展,2010,33(5):355-358.
[10]肖玉茹,等.古洞穴型碳酸盐岩储层特征研究——以塔河油田奥陶系古洞穴为例[J].石油与天然气地质,2003,24(1):75-86.
[2]旷理雄,等.阿克库勒凸起于奇地区YQ3井奥陶系碳酸盐岩油气成藏研究[J].新疆地质,2006,24(4):418-421.
[3]旷理雄,等.塔里木盆地于奇地区碳酸盐岩储集层特征及其控制因素[J].新疆石油地质,2008,29(1):15-18.
[4]闫相宾,等.塔中与塔河地区奥陶系岩溶储层形成条件的差异[J].石油与天然气地质,2005,26(2):202-207.
[5]康志宏.塔河碳酸盐岩油藏岩溶古地貌研究[J].新疆石油地质,2006,27(5):522-525.
[6]Chopra S,Marfurt K J.Emerging and future trends inseismic attributes[J].The Leading Edge,2008,27(3):298-318.
[7]张延玲,等.地震属性技术的研究和应用[J].地球物理学进展,2005,20(4):1129-1133.
[8]刘喜武,宁俊瑞.地震时频属性及其在油气地震地质技术应用的综述[J].勘探地球物理进展,2009,32(1):18-22.
[9]曹鉴华.RGB混频显示技术在某工区河道识别中的应用[J].勘探地球物理进展,2010,33(5):355-358.
[10]肖玉茹,等.古洞穴型碳酸盐岩储层特征研究——以塔河油田奥陶系古洞穴为例[J].石油与天然气地质,2003,24(1):75-86.
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