In well gao15-19, the pressure was very similar in upper overflow layer with high pressure and lower leakage layer with low pressure, and the pressure window was small; construction was completed by applying a series of technical measures, and the experience was accumulated for such a long open hole.
张晓文,王吉现.高15-19井“上喷下漏”井段的处理方法[J].钻探工程,2009,36(8):34-36. ZHANG Xiao-wen, WANG Ji-xian. Treatment Method of “Upper Blowout and Lower Loss” Section in Well Gao 15-19[J]. Drilling Engineering, 2009,36(8):34-36.