【作者】 张传举；

【导师】 李兆敏；

【作者基本信息】 中国石油大学 ， 油气田开发工程， 2011， 硕士

【摘要】 我国稠油资源非常丰富,而边底水稠油油藏又在稠油油藏中占有很大比例。在热采开发过程中,这类油藏容易受边底水入侵和锥进的影响,进而导致区块整体含水上升迅速,区块正常生产遭受重大影响。对边底水稠油油藏整体堵调技术的研究将有效抑制边底水的入侵,对油田增产稳产继而后续转驱都有着重要的意义。论文从调研油田堵调技术现状出发,进行了水平井堵剂研究实验,实验优选了可用于水平井堵水的冻胶堵剂并对其成胶性能和应用性能进行了评价。实验结果表明随着聚合物质量分数和交联剂质量分数的增加冻胶的成冻时间缩短、冻胶强度增大;对冻胶不同配方的封堵能力测试表明不同配方的冻胶封堵能力表现良好,对冻胶的剪切破坏实验证明冻胶可以抵抗一定程度的剪切而冻胶强度以及成冻时间所受影响不大;冻胶堵剂注入时,优先进入高渗透率填砂管岩心,渗透率级差越大,这种优先进入性能越明显,液流转向效果越好。在油藏地质参数的基础上建立了郑411区块I砂体油藏数值模拟模型,并进行了该区块的开发历史拟合以及原开发方式效果预测。通过对比确定了封堵位置,然后制定了四种封堵方案进行了优选。在得到较优方案后又对方案做了进一步的优化,最后得到的控水稳油方案为:打两口分别位于第三层和第五层的平行水平井,第一次的冻胶注入量最优为5000 m3,后续冻胶注入量可以根据油田实际生产情况适当减少。控水稳油方案的效果明显,区块整体含水下降,产油上升,可以得到明显堵调效果。更多还原

【Abstract】 China has abundant heavy oil resources, especially these oil reservoirs usually have edge water or bottom water. During the production of steam stimulation, this kind of reservoirs are vulnerable for the influence of water invasion and coning effects, which led to the rapid increase of water cut for whole block and seriously negative impact on normal production. The technology of control water cut and stabilize oil production for heavy reservoirs with edge/bottom water will effectively restrain the water invasion, which can have a positive significant on oil production and subsequent flooding.The technology of Profile Control and Water Shutoff in oil field is researched. Gel is selected for horizontal plugging agent, whose gelling properties and application performance is also evaluated. The results indicate that gelling time will reduce and gel strength will increase as the polymer concentration and cross-linking agent concentration increase. The plugging ability of gel is well for different gel formulations. Under the case of certain degree shearing, the gelling time and gel strength didn’t change much. Gels will prior access to the sand tube model with higher permeability. The greater of the permeability differences, the access priority and fluid diversion will be better. The simulation model of Zheng 411 block I sand is built on the base of geological parameters of reservoir. The development history of the block is fitted and the result of the original development way is predicted. Through contrast the blocking position is determined and then four different blocking plans is optimized. The further optimization is conducted after the better plans are selected. The optimized plan is as follows: drilling two parallel horizontal wells, 5000m3 gel agents injected the first time and subsequent injecting can decrease demand of the production of oilfield. The result of the optimized plan is favorable and economical, which can make the water cut of the whole block declines dramatically and oil production increases.更多还原