摘要
针对北布扎奇油田薄层、底水的油藏特点及油井含水上升较快的现状,利用老井侧钻水平井,有效避开油藏底水水锥,最大限度地延长了油井低含水采油期。介绍了原井的筛选原则;侧钻靶区地质设计;侧钻水平井水平段长度优选。按照以上地质设计,2004年12月在北布扎奇油田成功实施了NB31短半径开窗侧钻水平井,该井投产后获得日产234t的高产油流后,产量一直稳定在50t/d以上,含水由侧钻前的92%下降至10%。截止2005年10月NB31已累积增产原油7830t,取得了较好的经济效益。
In view of the characteristics of thin reservoirs, bottom-water breakthrough, and current situation of rapid increase of water-cut in the producing wells of North Buzachi Oilfield in Kazakhstan, the existing wells were used for sidetracking in horizontal drilling to keep away from the reservoir bottom-water coning effectively, maximizing the interval of low water-cut oil recovery of the wells. The research provides a cost-effective method for solving similar problems of wells with high water-cut in such reservoirs.
出处
《石油天然气学报》
CAS
CSCD
北大核心
2009年第3期291-293,共3页
Journal of Oil and Gas Technology
关键词
北布扎奇油田
底水油藏
水锥
侧钻水平井
North Buzachi Oilfield, bottom-water reservoir, water coning, sidetracking horizontal well
