侧钻井井型的确定及其经济评价

油田经多年开采,原有井网已不适合产层现状,大批生产井有的低产、有的停产、有的损坏,严重威胁油田持续稳产,这是油田开发进入中后期遇到的一个普遍性问题。针对这一问题介绍了侧钻井的概念,并以朝5-朝5北区块为例,给出了确定侧钻井井型及开窗方向的方法,同时对侧钻井进行了产能预测和经济效果评价。结果表明侧钻井具有明显的经济效益。

Determination of well-type for sidetracking well and its economic evaluation

The existing well pattern had not been suitable for production status after years of exploitation. Most production wells had a low yields, or stop production or breakdown, which had serious threatened the oilfield to continue production stably, and it is also a common problem when oilfield development entered into mid-late period. The text introduced a concept of sidetracking well for the problem, and took Chao5-Chao5 north block for example to provide a method which can confirm sidetracking well type and window direction, and given the result of its production prediction and economic evaluation. The results show that sidetracking well has obvious economic benefits.