对Butler双水平井SAGD产量公式的质疑

Question of SAGD production rate formula for Butler′s double horizontal wells

 陈元千

 Chen Yuanqian

 中国石油勘探开发研究院，北京 100083

 Research Institute of Petroleum Exploration & Development, PetroChina, Beijing 100083, China

 Butler于1991年提出的双水平井系统注蒸汽开采重质油藏的原理和方法，在我国得到了广泛的重视，在辽河、新疆和胜利等油田的应用已取得了显著成就。然而，Butler提出的蒸汽辅助重力驱动产量公式，因仅考虑了流体的重力辅助驱动作用，而忽视注入压力的主要驱动作用，并在达西定律的应用和数学推导过程方面存在许多问题，因此，得到的产量公式是不正确的和不可靠的。文中对Butler的SAGD产量公式存在的问题进行了分析和讨论，提出了质疑。应用实例表明，Ｂutler SAGD产量公式的结果偏低。

 The principle and method of using double horizontal well system to exploit heavy oil reservoirs proposed by Butler in 1991 have gained regards and applied widely, which have made an obvious achievement in Liaohe, Xinjiang and Shengli Oilfields, etc. However, the steam assisted gravity drainage (SAGD) production rate formula is incorrect and unreliable, because in the formula, only fluid-assisted gravity drainage effect is considered and major drive action from injection pressure is ignored, so there are many problems with the application of Darcy′s law and in the process of derivation. This article has discussed the problems existing in Butler′s SAGD production rate formula. The application examples show that the calculating results of Butler′s SAGD production rate formula is　very low.

10.6056/dkyqt201504014