摘要
分支水平井试井解释前期受解释模型及方法的限制,压力测试资料在动态分析中的利用率较低。针对长庆榆林气藏储层特点及井型特点,采用标准化拟压力函数方法、点源函数方法,以及杜哈美原理在Laplace空间构建了考虑表皮和井筒储集效应的双分支水平井拟压力试井解释模型。利用Stehfest数值反演技术,获得了实空间井底压力解,并给出了模型典型特征图。应用本模型对研究区块的20口双分支水平井及1口单分支水平井压力测试资料进行了拟合分析,并以三口典型实例井进行验证,解释结果与现场动、静态资料吻合度高。该解释方法对榆林气田后续的开发和认识具有一定的指导意义。
The utilization rate of pressure testing data in dynamic analysis is low for the limitation of interpretation model and method.The pseudo pressure bilateral well testing interpretation model is constructed in Laplace space by using the standardized pseudo pressure function method,point source function method and Duhame principle in consideration of surface effect and wellbore storage effect.It considers the reservoir characteristics and well pattern characteristics of Changqing gas reservoir in Yulin.The bottom hole pressure solution in real space and the typical chart of the model are obtained by Stehfest numerical inversion technique.The pressure testing data of 20 double branch horizontal wells and one single branch horizontal well in the study block are fitted and analyzed by using this model.This model is verified by three typical wells.The interpretation results are highly consistent with the field dynamic and static data.This interpretation method has certain guiding significance for the follow-up development and understanding of Yulin gas field.
作者
任超峰
王雪芹
赵文军
卢海娇
姜孝明
袁雪花
REN Chaofeng;WANG Xueqin;ZHAO Wenjun;LU Haijiao;JIANG Xiaoming;YUAN Xuehua(Changbei Operation Company of PetroChina Changqing Oilfield Company,Xi′an,Shaanxi 710000,China;Changqing Branch Company of Petrochina Corporation Logging Co.Ltd.,Xi′an,Shaanxi 710200,China;Research Institude of Exploration and Development,Petrochina Dagang Oilfield Company,Tianjin 300280,China)
出处
《油气井测试》
2020年第1期67-73,共7页
Well Testing
基金
长庆油田公司科技研发项目“2016榆林气田山2气藏生产动态特征研究”(CB-2016-015)
关键词
榆林气藏
分支水平井
低渗透储层
解释模型
试井解释
Yulin gas reservoir
branched horizontal well
low permeability reservoir
interpretation model
well testing interpretation
