石油勘探与开发2011，Vol.38Issue(4)：469-473,5.
稠油出砂冷采颗粒离散元数学模型
Discrete element method mathematical model of sand-carrying cold heavy oil production
摘要
Abstract
The sand production in unconsolidated sandstone reservoirs is essentially caused by erosion and migration of sandstone particles. Due to the complexity of the conventional physical modeling and the insufficient modeling capability of current numerical simulation for discontinuous media, this paper established a mathematical model for the Cold Heavy Oil Production (CHOP) procedure considering fluid-solid couplings by using Discrete Element Method, selected the Mohr-Coulomb yield criterion as the failure criterion of particle peeling from parent rock, and described the microscopic sand production mechanism quantitatively. The mathematical model presented very good matches with the ID physical modeling lab results in the simulation of sand production rate, oil production rate and bottom-hole pressure, which verified the proposed mathematical model. Based on this model, the authors also investigated the critical condition of CHOP and wormholc extension rule. By applying the mathematical model into field cases, the calculation results indicate that the discrete element mathematical model can simulate the sand production mechanism in the CHOP procedure very well, which provides a new approach to study sand-carrying cold production.关键词
颗粒流/离散元法/出砂冷采/蚯蚓洞/数学模型Key words
particle flow/ discrete element method/ sand-carrying cold production/ wormhole/ mathematical model分类
能源科技引用本文复制引用
王伯军,张霞,马德胜,范建平,王凤刚,梁金中..稠油出砂冷采颗粒离散元数学模型[J].石油勘探与开发,2011,38(4):469-473,5.基金项目
国家科技重大专项“大型油气田及煤层气开发”(2008ZX05000-032) （2008ZX05000-032）
