新立油田低渗透油藏超前注水技术实践与应用

Advanced water injection in low permeability reservoir of block Xin119

针对新119区块低渗透、低丰度油藏递减快、稳产难、采收率低的特点,采用了超前注水技术开发。在油藏研究基础上进行井网优化设计,应用储层整体改造技术保证油井产能发挥,及时进行油藏监测、动态跟踪评价及注水方案调整保证注采关系协调。经新立油田试验区块18个月的生产实践,与相邻的储层性质相同的区块对比,开发同期超前注水区块平均单井产能是滞后注水区块的2·3倍。超前注水开发试验的成功,对同类油田或区块的开发具有借鉴作用。

In accordance with the features of low permeability, low abundance, fast declining, difficult to stabilize production, and low recovery factor, advanced water injection has been conducted This technology involves pattern optimization, overall reservoir stimulation, reservoir monitoring, dynamic follow-up assessment, and injection plan adjustment to ensure oil well productivity and injection-production harmony. 18 months' production practice in the pilot block of Xinli oilfield shows that, comparing with adjacent reservoirs with similar characteristics, the average single well productivity of advanced injection block is 2.3 times of delayed injection block for the same development period. The success of advanced injection development test may guide the development of similar oilfields or blocks.