碳酸盐岩油藏生产过程中的动态应力场变化规律——以塔河地区TP326CH井为例
The Variation Law of Dynamic Stress Field in the Production of Carbonate Reservoirs——By Taking Well TP326CH in Tahe Area as an Example
摘要:
生产过程中的地应力分布影响着二次增产措施“甜点区”的分布及井周区域的破裂压力变化，可以指导后期增产措施实施。采用孔隙弹性力学理论，建立随机天然裂缝与酸压裂缝的耦合模型，使用有限元方法求解生产过程中的应力场变化，通过模型计算的产量与实际井的生产数据进行对比。实践证明，建立的模型与实际情况相符。
Abstract:
In the production process, the in-situ stress distribution affected the distribution of “dessert area” in secondary stimulation and the breakdown pressure changes in peripheral well region, which was for guiding the implementation of stimulation in the late period. By using a pore elastic mechanics theory, a random coupling model of natural fracture and acid fracturing is established, and the finite element method is used for obtaining the change of stress field in the production process. By comparing the production data from model calculation and the actual well production, it proves that the model is consistent with the actual situation.
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