摘要
针对长庆低渗油藏,水平井从单井开发逐渐转为水平井和直井联合井网开发中直井产能研究较少的问题,从实际开发需要出发,以水平注水井和垂直采油井联合五点井网为例,运用保角变换、镜像反映法以及复势叠加原理,理论上推导出联合井网中直井的产能方程,运用数值模拟方法对联合井网的直井产能进行了模拟计算。将理论计算公式和数值模拟结果相结合,引入修正系数对计算公式进行修正,方程修正后计算值和油田实际产能基本一致。同时研究了水平井长度对井网产能的影响。对水平井联合井网开发油田有一定指导意义。
The means of exploitation of low permeability oil reservoir in Changqing by single horizontal well is changed to by combination well pattern of horizontal well and vertical well,and the well pattern is mainly made of horizontal water injector and vertical oil producer.Study on vertical well deliverability by this means is less,so it is very necessary to study it deeply.According to production needs of Changqing oil field,the article takes combination well pattern of horizontal-injector and vertical-producer as example,deliverability formula of combination well pattern of horizontal-injector and vertical-producer is derived by conformal transformation,method of mirror image and complex potential overlay principle.And vertical well deliverability of combination well pattern is calculated through numerical simulation.Combined theoretical formula and numerical simulation result,the theoretical calculation value are basically consistent with the numerical result after theoretical formula is modified by introducing a correction coefficient.Influence of horizontal well length on well pattern deliverability is analyzed,which will be helpful for developing oil field by the means of combination well pattern of horizontal well and vertical well.
出处
《西南石油大学学报（自然科学版）》
CAS
CSCD
北大核心
2008年第1期81-84,共4页
Journal of Southwest Petroleum University(Science & Technology Edition)
基金
中国石油天然气集团公司创新基金项目(04E7023)
关键词
低渗透
水平井
直井
联合井网
产能计算
修正系数
low permeability
horizontal well
vertical well
combination well pattern
deliverability calculation
correction coefficient
