一种广义自吸新模型的推导及其应用

Derivation and application of new general model of spontaneous imbibition

 马东¹ 黄源泉¹ 贾洪亮² 党思思² 杨洁² 徐海潮³

长江大学石油工程学院，湖北 武汉 430100 中国石油新疆油田分公司陆梁油田作业区，新疆 克拉玛依 834000 中国石油渤海钻探钻井技术服务分公司，天津 300280）

Petroleum Engineering College, Yangtze University, Wuhan 430100, China Luliang Oilfield Operation Area, Xinjiang Oilfield Company, PetroChina, Karamay, Xinjiang 834000, China Bohai Drilling Technology Service Company, CNPC, Tianjin 300280, China)

 李克文等人推导了一种基于岩心自吸过程的Li?鄄Horne模型，运用该模型可以预测和计算岩心在自吸过程中的采收率，但该模型仅适用于均质岩心的活塞式自吸过程，存在着明显的局限性。文中在贝克莱·列维尔特方程的基础上，充分考虑了岩心的非均质性问题，推导了一种既适用于岩心的活塞式自吸，又适用于非活塞式自吸过程的新型广义模型。应用新模型进行了实例计算，结果表明，无论是在实验室还是油田生产条件下，新模型的拟合精度都比较高，可以预测和计算油田生产后期的采收率，有助于油田开发方案的调整。

 Li-Horne model, derived on the process of spontaneous imbibition in core samples by Li, etc., can be used to predict and calculate the recovery of core during the process of spontaneous imbibition. However, Li-Horne model can only be applied to piston-like spontaneous imbibition in homogeneous cores due to its limitations. In this paper, a new model, which can be used in both piston-like and non-piston-like spontaneous imbibition condition, is derived on the basis of Berkeley-Leveillete equation and heterogeneous cores. The new model was verified by the data from the laboratory and field; both results demonstrate that the model is correct. The new model can be used to predict and calculate the reservoir recovery in the later stage of oil field development, which is helpful to development plan adjustment.

10.6056/dkyqt201605009