红河油田长8油藏压裂水平井产能影响因素分析

Influencing factor analysis of fractured horizontal well productivity in Chang 8 reservoir of Red River Oilfield

胡艾国 熊佩 姚昌宇 李月丽

HU Aiguo XIONG Pei YAO Changyu LI Yueli

中石化华北分公司工程技术研究院，河南郑州　450006

Research Institute of Engineering and Technique, Sinopec Huabei Company, Zhengzhou 450006, China

针对红河油田压裂水平井产量递减快、含水高等问题，结合红河油田长8储层地质特征，分别研究了基质型储层和裂缝性储层条件下，油藏地质因素和压裂工程因素等对压后产能的影响。结果表明：油藏类型是影响压后产能的关键因素，对于基质型油藏，水平段长和裂缝条数是影响产能的主要因素；而对于裂缝型油藏，储层含油性及产能系数主要影响压后产能，综合压裂工艺及压裂液体系对压后产能的影响，确定最优压裂方案对提高压后产能具有重要指导意义。

To solve the problems of fast production decline and high water cut for fractured horizontal wells in Red River oil field, combined with the geological characteristics of Chang 8 reservoir, the impact on the post-fracturing productivity by geological factor and fracturing engineering factor was studied, in the conditions of matrix-type reservoir and fractured reservoir separately. The results show that the key factor affecting the post-fracturing productivity is reservoir type. For matrix-type reservoir, the main factors are horizontal section length and the number of fractures. While for fractured reservoirs, the main factors are oil saturation and productivity coefficient, and determining the optimum fracturing program considering the fracturing process and fracturing fluid system plays a directional role to improve post-fracturing productivity.