长庆油田华庆超低渗油藏水平井压裂裂缝优化

Optimization on fracturing fracture of horizontal well in Huaqing ultra-low permeability reservoir of Changqing Oilfield

杜现飞 殷桂琴 齐银 白晓虎 陈宝春 王成旺 安丽

中国石油长庆油田公司油气工艺研究院，陕西 西安 710018 中国石化中原油田分公司采油五厂，河南 濮阳 457001

Research Institute of Oil and Gas Technology, Changqing Oilfield Company, PetroChina, Xi′an 710018, China No.5 Oil Production Plant, Zhongyuan Oilfield Company, SINOPEC, Puyang 457001, China

长庆油田华庆超低渗透油藏主要采用水平井注水开发技术来提高开发效果，如何进行压裂裂缝优化设计是提高开发效果的关键。文中在对油藏特征分析的基础上，结合注采井网对水平井压裂裂缝长度、改造段数、布缝方式及施工参数进行了优化研究，提出了适合华庆超低渗油藏水平井的改造参数。24口水平井矿场实践表明，该参数组合具有较好的适应性，水平井产量达10.3 t/d，为直井的5倍，对类似油藏水平井压裂参数优化具有借鉴意义。

Huaqing ultra-low permeability reservoirs of Changqing Oilfield mainly use the water injection development technology of horizontal wells to improve development effect. How to optimize fracturing design is the key to improve the development effect. Based on the analysis of reservoir characteristics and combined with injection-production pattern, this paper studied the fracture length, transformed segments, fracture spacing manner and construction parameters. The transformation parameters suitable for Huaqing ultra-low permeability horizontal wells of Changqing Oilfield were proposed. Field practices of 24 horizontal wells show that this parameter combination has a good adaptability. The production of horizontal wells is up to 10.3 t/d, which is five times of vertical well. It has reference significance for the parameter optimization of horizontal wells in similar reservoir.

10.6056/dkyqt201405029