二连宝饶油田水平井地质导向技术分析研究

在水平井钻进过程中,地质导向技术是保证井眼顺利着陆,并在油层中水平穿行一定距离的关键技术。结合二连宝饶油田6口水平井的钻井实践,探讨了利用随钻测井技术、综合录井技术,建立“导眼法”地质导向方法,采用“大波浪法”控制井眼轨迹,在现场及时指导钻进方向,实现准确着陆、保障井眼轨迹尽可能多地位于油层中,在现场实践中效果显著,对今后的水平井施工具有重要的现实意义。

Study on Geologic Steering Technique of Horizontal Well in Baorao Oilfield of Erlian Basin

During the drilling of horizontal wells,the geologic steering technique is an important technique that can guarantee wellbore to enter into oil layers smoothly and pass a certain distance through oil layers.Combined with the drilling practice of six horizontal wells in Baorao oilfield of Erlian basin,this paper introduces standard well geologic steering technique and waving well track controlling method by using the LWD/MWD and the mud logging techniques.Comprehensively utilizing above two techniques,the drilling direction can be guided promptly at wellsite to enter into oil layers exactly in order to guarantee the well track lying in the oil layers as much as possible.Seen from the result of wellsite practice,the new geologic steering method,which gets the remarkable achievements,has the significant real meaning for the future horizontal wells drilling.