断陷湖盆滩坝砂体预测方法——以东营凹陷沙四段为例
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摘要
在滩坝砂体薄储层预测方面,单纯的应用地质分析方法和地震预测方法存在明显的局限性。建立一套适用于现有资料和技术条件下的薄互层储层预测方法,具有重要意义。文章以东营凹陷沙四段为例,提出了基于滩坝砂体成因层序特点的地质-地球物理综合预测方法。首先,通过层序地层研究,明确滩坝砂体发育区;其次,分析滩坝砂体的地质-地震响应特征,选择针对性的储层预测方法和地震属性参数组合;最后,对目标层段进行多属性分析确定有利相带,井震结合精细描述滩坝砂体。应用该方法,对东营凹陷沙四段滩坝砂体的预测取得了良好效果。实践证明,地质分析与地球物理技术的综合应用是预测描述薄互层储层的有效途径。
On the prediction of thin reservoirs of beach bar,simply applying geology analyzing or seismic prediction method is restricted.It is very important that setting up a thin reservoirs prediction method based on modern data and technological conditions.A case study of E2s4 in Dongying depression,it is put forward that the comprehensive prediction method of geology-geophysics based on the genesis features of beach bar sand-body.Firstly,by researching stratigraphic sequence the distribution areas of beach bar sand-body are known;secondly,analyzing response characters of geology-seism,effective reservoir prediction methods and seismic attribution parameters are chosen;finally,favorite facies belts are understood by multi-attribution analyzing of target stratum and the beach bar sand-body is described by linking well and seism.Using of this method,well effects are gained in predicting beach bar sand-body of E2s4 of Dongying depression.It indicates that the comprehensive uses of geology analyses and geophysical skills is effective to predict and descript the reservoirs of beach bar sand-body.
On the prediction of thin reservoirs of beach bar,simply applying geology analyzing or seismic prediction method is restricted.It is very important that setting up a thin reservoirs prediction method based on modern data and technological conditions.A case study of E2s4 in Dongying depression,it is put forward that the comprehensive prediction method of geology-geophysics based on the genesis features of beach bar sand-body.Firstly,by researching stratigraphic sequence the distribution areas of beach bar sand-body are known;secondly,analyzing response characters of geology-seism,effective reservoir prediction methods and seismic attribution parameters are chosen;finally,favorite facies belts are understood by multi-attribution analyzing of target stratum and the beach bar sand-body is described by linking well and seism.Using of this method,well effects are gained in predicting beach bar sand-body of E2s4 of Dongying depression.It indicates that the comprehensive uses of geology analyses and geophysical skills is effective to predict and descript the reservoirs of beach bar sand-body.
引文
[1]邓宏文,马立祥.车镇凹陷大王北地区沙二段滩坝成因类型分布规律与控制因素研究[J].沉积学报,2008(5):715~720.
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[4]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].石油物探,2004(4):17~21.
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[7]凌云研究组.储层演化地震分析[J].石油地球物理勘探,2004(6):672~678.
[2]朱筱敏,信荃麟,张晋仁.断陷湖盆滩坝储集体沉积特征及沉积模式[J].沉积学报,1994(2):20~27.
[3]李丕龙.陆相断陷盆地油气地质与勘探(卷五)[M].北京:石油工业出版社,2003.62~68.
[4]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].石油物探,2004(4):17~21.
[5]才巨宏.综合应用波形分析及地震特征反演技术预测滩坝砂岩[J].油气地质与采收率,2005(3):42~43.
[6]董立生,刘书会,刘跃华,等.地震属性分析技术的研究与应用[J].石油物探,2004(4):17~21.
[7]凌云研究组.储层演化地震分析[J].石油地球物理勘探,2004(6):672~678.
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