番禺油田薄层边底水稠油油藏水平井含水率上升特征  

Water cut rising performance of horizontal wells in thin-bed heavy oil reservoir with edge-bottom water in Panyu oilfield

作　　者：李林 罗东红 陶彬 贺小慧[2] 薛永超[2] 杜玉桥[2] 

机构地区：[1]中海石油(中国)有限公司深圳分公司,广东深圳518067 [2]中国石油大学(北京)石油工程学院,北京102249

出　　处：《油气地质与采收率》2016年第3期106-110,共5页Petroleum Geology and Recovery Efficiency

基　　金：国家科技重大专项"海上稠油水驱及注聚开发方式下不同井型生产能力与注入能力评价方法研究"(2011ZX05024-002-006)

摘　　要：以番禺油田薄层边底水稠油油藏水平井为例,将水平井含水率上升特征类型划分为开井水淹型、快速水淹型、阶梯上升型和爬坡型4类,根据油藏实际地质特征、流体特征和水平井生产动态,分析水平井含水率上升类型影响因素,并用灰色关联法对影响因素进行排序。研究结果表明,各因素对水平井含水率上升特征影响程度由大到小依次为:夹层范围、原油粘度、避水高度和水体厚比。夹层范围越大,原油粘度越小,单井含水率上升越缓;避水高度越小,水体厚比越大,单井含水率上升则越快。水平井含水率上升类型是驱替模式、原油粘度、水平井避水高度和油藏水体厚比等耦合影响而得到的结果,由此制作薄层边底水稠油油藏水平井不同含水率上升类型影响因素定量组合表,该表可广泛应用于预测单井生产动态类型、水平井是否存在工程问题及历史拟合迭代建模等。Taking thin-bed heavy oil reservoir with edge-bottom water in Panyu oilfield as an example,water cut increaseof the horizontal wells was classified into four types：open drowning type,rapid drowning type,rising ladder type and hillclimbingtype. Influencing factors of the water cut rising type were analyzed according to the geological condition,fluidcharacteristic and production performance of the horizontal well. The effect sequence was given by the gray correlationmethod. Results indicate that the effect sequence is interlayer range〉oil viscosity〉distance between wellbore and wateroil contact〉ratio of water layer thickness to overall thickness. The larger the interlayer range is and the smaller the oil viscosity is,the slower the water cut rises in single horizontal well;the smaller the distance between wellbore and water oil contact and the larger the ratio of water layer thickness to overall thickness,the faster the water cut rises in single horizontalwell. The type of water cut rising is the result caused by the combination effect of drive patterns,oil viscosity,distance between wellbore and water oil contact and ratio of water layer thickness to overall thickness. Quantitative combination tableof the influencing factors was given and can be used to predict production performance type of single horizontal well,to determine whether there is engineering problem and in historical-matching iterative modeling for the horizontal wells.

关 键 词：薄层 边底水油藏 水平井 含水率上升特征 番禺油田 

分 类 号：TE345[石油与天然气工程—油气田开发工程]