基础井网油层层系封堵方法研究

喇嘛甸油田层系调整和二次加密调整，都是在原基础井网开采的油层上进行的。层系调整以后，虽然各套都有自己独立的注水井（二次加密井除外），但大部分油井都是合层互采，这就造成了油田分层系产液量劈分，注采比确定，分层系压力系统评价，开发指标计算与评价问题一直没有得到解决，给开发动态分析及高含水后期油水井调整带来极大困难，为了了解基础井网对葡14及以下和二次加密井各套油层的影响程度，于2000年开展了封堵试验，方案设计封堵基础井网葡I4及以下油层8口，封堵后，解决了四套开发层系8口基础井网葡I4及以下油层对萨尔图油层影响问题，8口同井场葡I4以下油层层间干扰问题，4口高I6及以下分流线上1－3个方向的二线受效问题和6口二次加密井主流线二线上的受效问题。

The Plugging Method Research in the Basic Well Pattern and Series of Reservoir Strata

Series of strata adjustment and secondary infilling adjustment are all applied in reservoir produced on the basic well pattern in Lamadian oilfield. After series of strata adjustment,although each of the series of strata has its own water injecting well(besides secondary infilling well), a majority of oil well produce in each series of strata. So the problems appear, such as the liquid quantity split, the injection production ratio confirmation, the pressure system of separating series of strata evaluation, the exploitation index calculation and the estimate. It brings the huge difficult to the oil and water well adjustment in high water cut stage and the exploitation dynamic analyzed. In order to know the degree of influence that the basic well pattern carray influence to Pu I4 and below and the secondary infilling well. So the water plugging experimentation is deployed. The project designs plug eight well in the basic well pattern and Pu I4 and below reservoir. After plugging, it resolves the problem that the four pieces of series of strata influence Saber reservoir, interlayer interfere, the four well next effected question in one to three direction on distributary line in GAO I6 and below, the six secondary infilling well next effected question in artery line.