国内水平井修井工艺技术现状

水平井是油气田高效开发的一项重要技术,随着钻井技术水平的提高,提高油气井产量、采收率、降低油气田开发成本的需要,水平井的数量和类型越来越多,水平井的应用越来越广泛。另一方面,水平井由于其井身轨迹的特殊性,水平井的油套管更易出现磨损、腐蚀等情况,也更易发生故障,水平井修井面临更加严峻复杂的挑战。国内水平井修井起步较晚,工艺技术相对滞后,需要针对性地开展研究,不断探索,不断实践,以提高水平井修井工艺水平,满足油气田高效开发中水平井修井数量和难度不断增长的需要。

Workover Operation Technology for Horizontal Wells in China

Horizontal well technology,is an important technology for oil/gas field high efficiency development.With drilling technology advancing and the need of increasing well production,enhancing recovery ratio and reducing production expenses,it is widely applied,the quantity and types of horizontal well are more and more.However,because of special wellbore trajectory,casing and tubing is easily to be worn and eroded,and horizontal well is more likely to fail to produce and need repairing.Compared to horizontal well drilling,workover operations is late and poor and face big challenge.The quantity of horizontal well need repairing are increasing and operations are more and more difficult,it's most important to improve workover technology for horizontal well to meet the needs of oil/gas field high efficiency development.