单河道砂体的识别方法
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摘要
露头考察表明,很多横向分布稳定的砂体实际上是复合河道砂体,是由多条单河道砂体拼合叠置形成的。单河道砂体在储集物性方面的明显差异和隔夹层的存在,导致复合河道砂体含油不均匀。正确识别复合河道砂体中单个河道砂体的展布特征,可以更准确地建立储集层的地质模型,更好地进行剩余油挖潜。从露头、钻井和地震的角度,提出了判别单河道砂体的一些方法,即露头实测法、岩性对比法、电性对比法、厚度中心法、统计约束法、地震相及属性分析法。这些方法在寻找岩性油气藏中较经济、实用。
By outcrops studies,it is indicated that many laterally stable sand bodies are actually complex channel sand bodies formed by stacking of a number of single-channel sand bodies together.Single-channel sand bodies are much different in grain size,sorting,matrix content and barrier,etc.,resulting in uneven oil zone in the complex channel sand bodies.Understanding of the distribution characteristics of these single-channel sand bodies is helpful for establishing more accurate geological reservoir model and finding out more remaining oil.In this paper,on the basis of outcrop,drilling and seismic studies,some identification methods for single-channel sand bodies are proposed,such as outcrop measure method,lithology contrasting method,electrical contrasting method,thickness center method,statistical restraining method,seismic facies and attributes analysis method.These methods are economic and practicable for lithologic reservoir exploration.
By outcrops studies,it is indicated that many laterally stable sand bodies are actually complex channel sand bodies formed by stacking of a number of single-channel sand bodies together.Single-channel sand bodies are much different in grain size,sorting,matrix content and barrier,etc.,resulting in uneven oil zone in the complex channel sand bodies.Understanding of the distribution characteristics of these single-channel sand bodies is helpful for establishing more accurate geological reservoir model and finding out more remaining oil.In this paper,on the basis of outcrop,drilling and seismic studies,some identification methods for single-channel sand bodies are proposed,such as outcrop measure method,lithology contrasting method,electrical contrasting method,thickness center method,statistical restraining method,seismic facies and attributes analysis method.These methods are economic and practicable for lithologic reservoir exploration.
引文
[1]于兴河.碎屑岩系油气储层沉积学(第二版)[M].北京:石油工业出版社,2008:14-448.
[2]冯伟光.孤岛油田南区东部曲流河沉积结构单元分析[J].海洋石油,2008,28(3):31-35.
[3]张建宁,韩文功,阎昭岷,等.单一河道砂体边界地质模型及其地震正演响应特征[J].油气地球物理,2006,4(4):32-35.
[4]Brown A R.地震属性及其分类[J].严又生,译.国外油气勘探,1997,9(4):529-530.
[5]郭华军,刘庆成.地震属性技术的历史、现状及发展趋势[J].物探与化探,2008,32(1):19-22.
[6]曹卿荣,李佩.应用地震属性分析技术刻画河道砂体[J].岩性油气藏,2007,19(2):94-95.
[7]黄云峰,杨占龙,郭精义,等.地震属性分析及其在岩性油气勘探中的应用[J].天然气地球科学,2006,17(5):739-742.
[8]胡水清,韩大匡,刘文岭,等.应用谱分解技术预测河道砂体[J].新疆石油地质,2008,29(3):370-372.
[9]余鹏,李振春.分频技术在储层预测中的应用[J].勘探地球物理进展,2006,29(6):419-423.
[10]刘刚.相干分析技术在曲流河砂体描述中的应用[J].油气地球物理,2005,3(3):38-41.
[11]张海燕,陈树民.本征值相干体技术在松辽盆地北部精细地质研究中的应用[J].大庆石油地质与开发,2008,27(2):140-142.
[12]于建国,林春明,王金铎,等.曲流河沉积亚相的地震识别方法[J].石油地球物理勘探,2003,38(5):547-551.
[2]冯伟光.孤岛油田南区东部曲流河沉积结构单元分析[J].海洋石油,2008,28(3):31-35.
[3]张建宁,韩文功,阎昭岷,等.单一河道砂体边界地质模型及其地震正演响应特征[J].油气地球物理,2006,4(4):32-35.
[4]Brown A R.地震属性及其分类[J].严又生,译.国外油气勘探,1997,9(4):529-530.
[5]郭华军,刘庆成.地震属性技术的历史、现状及发展趋势[J].物探与化探,2008,32(1):19-22.
[6]曹卿荣,李佩.应用地震属性分析技术刻画河道砂体[J].岩性油气藏,2007,19(2):94-95.
[7]黄云峰,杨占龙,郭精义,等.地震属性分析及其在岩性油气勘探中的应用[J].天然气地球科学,2006,17(5):739-742.
[8]胡水清,韩大匡,刘文岭,等.应用谱分解技术预测河道砂体[J].新疆石油地质,2008,29(3):370-372.
[9]余鹏,李振春.分频技术在储层预测中的应用[J].勘探地球物理进展,2006,29(6):419-423.
[10]刘刚.相干分析技术在曲流河砂体描述中的应用[J].油气地球物理,2005,3(3):38-41.
[11]张海燕,陈树民.本征值相干体技术在松辽盆地北部精细地质研究中的应用[J].大庆石油地质与开发,2008,27(2):140-142.
[12]于建国,林春明,王金铎,等.曲流河沉积亚相的地震识别方法[J].石油地球物理勘探,2003,38(5):547-551.
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