新型双通道常闭阀的研制与应用

Development and Application of a New Type of Dual-Channel Normally-Closed Valve

塔里木盆地台盆区自喷井完井投产管柱多使用常闭阀,目前现场使用的常闭阀存在可靠性低等不足之处,技术人员创新研制出了新型双通道常闭阀,该新型阀打开后能够实现管柱内外、上下同时沟通,解决了老式常闭阀可靠性低、不能对下部井筒压井等问题.提高了现场施工井控安全,该新型阀现场推广应用10余井次,成功率100%,应用效果好,现已在塔里木盆地完井试油中推广应用。

Normally-closed valves are often used in the production string of well completion in the flowing wells in the Taipeng area of Tarim basin.Due to the low reliability of the normally-closed valve used at well site,a new type of dual-channel normally-closed valve has been developed by the technicians,which can simultaneously communicate both inside and outside or both top and bottom of the string after opening,so as to deal with the problems such as the low reliability of the old type normally-closed valve and failure to kill a well at the lower wellbore and to improve the site operation safety of well control.The new valves have been widely used in more than 10 wells,with a success rate of 100%and a good application effect,which have been widely applied in the well testing of Tarim basin.