底水油藏水平井最优避水高度及合理长度的研究  

Studies of the Optimum Water Avoidance Height and the Reasonable Length of Horizontal Well in Bottom Water Reservoir

作　　者：张厚青 刘冰 徐兴平[2] 李继志[2] 

机构地区：[1]中国石油大学(华东)理学院,青岛266555 [2]中国石油大学(华东)机电工程学院,东营257061

出　　处：《科学技术与工程》2012年第4期774-778,共5页Science Technology and Engineering

基　　金：山东省自然科学基金(Y2008F17);中国石油大学华东研究生创新基金项目(s10-29);中国石油大学(华东)自主创新项目11CX04061A资助

摘　　要：底水锥进是开发底水油藏时遇到的最大问题,制约着水平井的有效开发。应用Green函数和源函数法对底水油藏水平井的压力分布进行了半解析求解,推导了见水时间和临界产量公式。通过实例计算分析了避水高度和水平井段长度对见水时间和临界产量的影响,确定了底水油藏水平井的最优避水高度和水平井段合理长度。该方法对提高水平井的开采效果和节约开采成本具有一定的理论指导意义。Bottom water coning is the biggest problem in the exploitation of bottom water reservoir,which prohibits the valid exploitation of horizontal wells.Green function and source function are used to find the semi-analytic expression of the pressure distribution of the horizontal well in bottom water reservoir,and the critical production formula and water breakthrough are obtained time formula.The influence of avoidance water height and horizontal section length on water breakthrough time and critical production was analysised,ascertain of the water avoidance height from the bottom water reservoiv and the horizontal section of reasonable length.This research provides the theoretic guidance enhances the effective exploitation of the horizontal well and economize the cost of mining.

关 键 词：底水油藏 水平井 避水高度 井筒长度 

分 类 号：TE355.6[石油与天然气工程—油气田开发工程]