连续油管之所以成为理想的欠平衡钻井工艺设备,原因就在于它没有钻柱连接工序,可以实现全过程的欠平衡。它还适用于酸性气井钻井和含气油井修井,可解除气体在地面泄漏的风险。通过压力调整工序,完钻后可以不压井,一直保持欠平衡状态至生产阶段。连续油管还可以实现井下导向、测井和测压。 Coiled tubing has become the ideal underbalanced drilling process equipment, because it does not drill string connection process, you can achieve the entire process of under-balanced. It is also suitable for sour gas well drilling and gas well workover to relieve the risk of gas leakage on the ground. Through the pressure adjustment process, after drilling can not kill, has remained under-balanced state to the production stage. Coiled tubing also enables downhole guidance, logging and manometry.