曲流河点坝内部构型要素的定量描述及应用  

Quantitative Description of Internal Architecture in Point Bar of Meandering River

作　　者：周新茂[1] 高兴军[1] 田昌炳[1] 王兴明[2] 陈建阳[1] 郝明强[1] 周莹[2] 

机构地区：[1]中国石油勘探开发研究院,北京100083 [2]中国石油大港油田公司勘探开发研究院,天津300280

出　　处：《天然气地球科学》2010年第3期421-426,共6页Natural Gas Geoscience

基　　金：中国石油天然气股份有限公司科技部项目"高含水油田提高水驱采收率关键技术"(编号:2008B-0801)资助

摘　　要：曲流河点坝内部构型要素的定量描述,实质上是对侧积泥岩产状及侧积体规模的定量计算。在建立侧积泥岩单井识别标准的基础上,采用了3种方法进行构型要素的定量描述。一是地层倾角测井法,直接获取侧积泥岩产状;二是开发对子井方法,通过应用小层顶拉平技术、角度转换等方法计算获得侧积泥岩真倾角,进而求得侧积体规模;三是水平井方法,主要利用GR曲线对地层中泥质含量的敏感性,识别水平井钻遇泥岩夹层的厚度,结合井筒直径、井斜角、地层倾角等参数,建立计算公式求得侧积泥岩的产状,获取侧积体的规模。根据求取的产状、规模数据,完成点坝构型要素的定量描述。通过分析侧积泥岩对剩余油分布的控制作用,预测出剩余油的富集区域,并提出相应的挖潜措施。The quantitative analysis of point-bar′s inner-architecture is essentially computation of lateral mudstone′s attitude and lateral accretion body′s scale.Based on recognition criteria of lateral mudstone on log map,three computing methods are used to quantitatively describe the attitude and the scale.The methods are diplog,twin wells and the horizontal well.The diplog show the attitude directly.And the twin wells can provide the real inclination of mudstone with calculation on well′s data by work of sublayer top laping and angular transformation.The third method is based on the horizontal well,and the attitude is calculated by a formula composed of some horizontal well′s parameters,such as radius of well hole,the hole deviation angle,the stratum dip and the length of mudstone.The length can be obtained by analysis of GR log curve,which is very sensitive to the shale bulk volume.Based on the data of attitude and scale,the architecture elements of point-bar can be quantitatively described.On the analysis of relationship between lateral mudstone and remaining oil,then the enrich zone of remaining oil is forecasted and the corresponding development plan will be carried out.

关 键 词：点坝构型要素 侧积泥岩产状 侧积体规模 对子井 水平井 剩余油 

分 类 号：TE132.1[石油与天然气工程—油气勘探]