东营凹陷平方王—平南潜山油藏裂缝性储层描述
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摘要
以地震资料为主识别裂缝性储层并描述裂缝的空间分布,是目前石油工业界积极研发的技术之一。针对平方王—平南潜山油藏裂缝性储层的特点,利用断裂增强的构造倾角滤波处理技术处理后的地震资料,提取了反映储层微裂缝的最优几何属性:曲率属性描述了微断裂体系的线状特征,最大曲率与裂缝的密度有内在的联系,而该曲率的方位角则代表了裂缝的方向。岩心资料和成像测井与地震资料相结合有针对性地分析了裂缝空间展布规律。平方王—平南潜山储集空间类型多、分布不均匀,裂缝、溶孔和溶洞发育,储集空间具有结构形态上的复杂性和空间变化的突变性。研究区裂缝的方向主要是北东向,裂缝主要发育在大断层附近的构造高点,西北部沿断层走向有个裂缝不发育的条带,其他各层段储层的特征表现为一定的相似性。
The seismic technique which is widely used for identifying fractured reservoir and describing the spatial distribution and orientation of fractures based on the seismic data is one of the most effective approaches in the present petroleum industry.According to the fracture characteristics of Pingfangwang-Pingnan buried hill reservoir,the author used the enhanced faulting and filtered treating seismic data to extract the most optimal attribute from earthquake geometry attributes of reflection micro-crack of reservoir:the curvature attribute which is used to describe the micro-fracture system of linear features,the largest curvature represents the force of the point,which has the internal connection with the density of fractures,and the azimuth property represents the direction of fractures.With the help of two properties of the largest curvature,the density and directions of fractures can be obtained,and then the net-structure and landscape orientation continuous,micro-fracture system of three-dimensional seismic imaging and the distribution of fracture can be described.The distribution rule of reservoir has been analyzed with the actual data:the main direction of fracture is EN,the main area of fracture is on the highest point near the large fault,and there is a belt along fault in the NW area where the fracture is rare,and the else reservoir shows similarity in some degree.
The seismic technique which is widely used for identifying fractured reservoir and describing the spatial distribution and orientation of fractures based on the seismic data is one of the most effective approaches in the present petroleum industry.According to the fracture characteristics of Pingfangwang-Pingnan buried hill reservoir,the author used the enhanced faulting and filtered treating seismic data to extract the most optimal attribute from earthquake geometry attributes of reflection micro-crack of reservoir:the curvature attribute which is used to describe the micro-fracture system of linear features,the largest curvature represents the force of the point,which has the internal connection with the density of fractures,and the azimuth property represents the direction of fractures.With the help of two properties of the largest curvature,the density and directions of fractures can be obtained,and then the net-structure and landscape orientation continuous,micro-fracture system of three-dimensional seismic imaging and the distribution of fracture can be described.The distribution rule of reservoir has been analyzed with the actual data:the main direction of fracture is EN,the main area of fracture is on the highest point near the large fault,and there is a belt along fault in the NW area where the fracture is rare,and the else reservoir shows similarity in some degree.
引文
[1]李丕龙,张善文,王永诗.断陷盆地多样性潜山成因及成藏研究——以济阳坳陷为例[J].石油学报,2004,25(3):28-31.
[2]宋国奇,刘克奇.断层两盘裂缝发育特征及其石油地质意义[J].油气地质与采收率,2009,16(4):1-3.
[3]李俊,刘丽峰,赵玉合,等.古潜山油气藏研究综述[J].地球物理学进展,2006,21(3):879-887.
[4]李娟,李琦,孙松领,等.低渗透砂岩油气藏裂缝综合预测[J].断块油气田,2007,14(4):37-39.
[5]Robert G Loucks,Paul K Mescher,George A McMechan.Three-dimensional architecture of a coalesced,collapsed paleocave system in the Lower Ordovician Ellenburger Group,central Texas[J]. AAPG Bulletin,2004,88:545-564.
[6]卞从胜,王红军.四川盆地广安气田须家河组裂缝发育特征及其与天然气成藏的关系[J].石油实验地质,2008,30(6):585- 590.
[7]龚洪林,潘建国,王宏斌,等.塔中地区碳酸盐岩裂缝综合预测技术及其应用[J].石油与天然气地质,2007,28(6):841-846.
[8]刘丽丽,赵中平,李亮,等.变尺度分形技术在裂缝预测和储层评价中的应用[J].石油与天然气地质,2008,29(1):31-37.
[9]胡冬亮,吴时国,蒲玉国,等.东营凹陷纯化油田西部侵入岩裂缝系统研究[J].油气地质与采收率,2008,15(2):67-69.
[10]张奉东,马收.松辽盆地长岭凹陷腰英台油田地应力及天然裂缝场研究[J].石油实验地质,2008,30(2):150-153.
[11]孙玮,刘树根,时华星,等.济阳坳陷桩海碳酸盐岩潜山构造演化及其对油气成藏的控制作用[J].油气地质与采收率,2008, 15(3):23-25.
[2]宋国奇,刘克奇.断层两盘裂缝发育特征及其石油地质意义[J].油气地质与采收率,2009,16(4):1-3.
[3]李俊,刘丽峰,赵玉合,等.古潜山油气藏研究综述[J].地球物理学进展,2006,21(3):879-887.
[4]李娟,李琦,孙松领,等.低渗透砂岩油气藏裂缝综合预测[J].断块油气田,2007,14(4):37-39.
[5]Robert G Loucks,Paul K Mescher,George A McMechan.Three-dimensional architecture of a coalesced,collapsed paleocave system in the Lower Ordovician Ellenburger Group,central Texas[J]. AAPG Bulletin,2004,88:545-564.
[6]卞从胜,王红军.四川盆地广安气田须家河组裂缝发育特征及其与天然气成藏的关系[J].石油实验地质,2008,30(6):585- 590.
[7]龚洪林,潘建国,王宏斌,等.塔中地区碳酸盐岩裂缝综合预测技术及其应用[J].石油与天然气地质,2007,28(6):841-846.
[8]刘丽丽,赵中平,李亮,等.变尺度分形技术在裂缝预测和储层评价中的应用[J].石油与天然气地质,2008,29(1):31-37.
[9]胡冬亮,吴时国,蒲玉国,等.东营凹陷纯化油田西部侵入岩裂缝系统研究[J].油气地质与采收率,2008,15(2):67-69.
[10]张奉东,马收.松辽盆地长岭凹陷腰英台油田地应力及天然裂缝场研究[J].石油实验地质,2008,30(2):150-153.
[11]孙玮,刘树根,时华星,等.济阳坳陷桩海碳酸盐岩潜山构造演化及其对油气成藏的控制作用[J].油气地质与采收率,2008, 15(3):23-25.
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