摘要
塔里木东河油田属超深砂岩油藏,储集层岩石压实作用好,开发初期预测为不出砂,因此在油田开发时没有采取任何防砂措施。但在开发过程中,由于压力下降和含水率上升,岩石的应力状况及胶结状态都发生了变化,油井出砂日益严重。分析了塔里木东河油田投入开发后出砂的主要影响因素,对传统的出砂预测公式引入了地层压力亏空因子和含水率因子2个修正项,用修正后的组合模量公式与斯伦贝谢法公式动态地对该油田的3口典型出砂井进行计算和分析,结果与油田实际情况吻合。此动态出砂预测法对其他砂岩油藏也有一定参考价值。
Donghe oilfield in Tarim basin is an ultradeep sandstone reservoir with well compacted rocks. The prediction in the early phase of production was that it would not produce sand. So, no sand control measure was made after putting it into production. However, with reservoir pressure drawdown and water-cut increase during the production, the sand production became more and more serious. Following analysis of the main affecting factors, this paper proposes two modification factors （λ1 and λ2） for conventional sanding prediction formula. Using the modified formula, the calculation results and prediction conclusions match the reservoir conditions very well. This method could be as a guide for other sandstone reservoirs in dynamic sanding predictions or sand controls.
出处
《新疆石油地质》
CAS
CSCD
北大核心
2008年第3期341-343,共3页
Xinjiang Petroleum Geology
关键词
塔里木盆地
东河油田
出砂动态预测
地层压力
亏空因子
含水率
Tarim basin
Donghe oilfield
dynamic sanding prediction
reservoir pressure
voidage factor
water cut
