文72块是中原油田最复杂的断块油气田,断层多、地层压力高、地温梯度高,某些小断块存在复合盐层,近年来所布井位又多为大斜度双靶定向井,复杂多变的地质情况严重制约了钻井速度的提高。2001年以来完成了9口定向井,通过优选井位、推广高效PDC钻头、应用导向螺杆钻具,大力推广复合钻井技术,进一步完善井下复杂、事故预防系统,使钻井速度提高近一倍,综合经济效益显著。 Wen 72 is the most complicated fault block oil and gas field in Zhongyuan Oilfield. There are many faults, high formation pressure and high geothermal gradient. There are compound salt layers in some small fault blocks. In recent years, The complex and ever-changing geological conditions have severely restricted the improvement of drilling speed. Since 2001, a total of 9 directional wells have been completed. Through the selection of well locations, the promotion of high-efficiency PDC bits, the application of guided screw drilling tools, the promotion of complex drilling technologies, the further improvement of downhole complex and accident prevention systems, and the drilling speed nearly doubled, the comprehensive Significant economic benefits.