摘要
为了改善油田目前的开发效果 ,减缓产量递减 ,降低含水上升率 ,延长油田的经济开采期 ,实现其较长时间的高产稳产 ,减少储量的损失 ,提高原油采收率 ,需要进行井网加密调整。井网加密受到各种技术及经济条件的限制 ,如何确定合理井网密度 ,在油田开发后期有着重要的现实意义。文章在利用现金流量法基础上 ,考虑注水波及系数和注采井数比 ,同时考虑了地层物性、非均质性和原油物性等多种影响因素的产量变化规律 ,建立考虑多种因素影响的油田注水开发中后期井网加密分析新方法。该方法比以往的方法具有考虑影响因素较为全面。实例应用表明 ,该方法的实用性比单纯考虑经济因素或工程因素更具有实用性。
It is necessary to thicken the well pattern to improve the current production efficiency, slow the production decline, reduce the water cut rate, extend the commercial production term, keep high and stable production longer, decrease the reserve loss and improve the recovery factor. Well pattern thickening is restricted by technical and economical conditions. It is very important for the late stage of oil field production to determine the reasonable well pattern. Based on the cash flow method, considering the flood conformance and the injection/recovery wells ratio, and taking the influence of several factors, such as the physical property and heterogeneity of formations, the physical property of crude oil, etc. on the production into consideration, the new analysis method of well pattern thickening considering the influence of many factors during the medium/late stage of water flood development is set up. The method considers more factors than the usual method. Practical application shows the method is more practical than the methods considering either the economic factor or the engineering factor.
出处
《天然气勘探与开发》
2004年第3期73-77,34,共6页
Natural Gas Exploration and Development
