桥7平1非常规油气水平井钻井液技术

桥7平1井是江苏油田首口采用长水平段多级分段压裂动用非常规致密砂岩油藏的水平井。根据该井储层特征、井身结构、致密砂岩油藏特点和小井眼钻井液性能要求，分析了该井钻井液技术难点，介绍了钻井液体系配方和现场处理工艺技术、应用效果以及取得的认识与建议，为江苏油田后续非常规油气藏钻井提供指导。

Drilling fluid technology of unconventional horizontal weU Qiao7-P-1

Well Qiao7 - P - 1, which is the first well of adopting the long horizontal section multistage subsection frac- turing technique, is an unconventional horizontal well in tight sandstone reservoir in Jiangsu Oilfield. This paper first intro- duces reservoir characteristics,wellbore configuration, tight sandstone reservoir characteristics and slim - hole drilling fluid property, and secondly analyzes difficulty points of drilling fluid technology. Finally, the drilling fluid formula, the process- ing technology, application effect, and recognition and suggestions are introduced in detail. The success of this well provid- ed important guiding significance to the subsequent drilling operation of Jiangsu Oilfield.