连续油管液氮气举排液技术在文古3井的应用

Application of Technique of Gas-Lift by Liquid Nitrogen and Unloading with Coiled Tubing in Well Wengu3

连续油管液氮气举工艺技术通过连续油管与液氮泵车、液氮罐车或现场制氮设备相配合,形成压裂与快速返排工艺技术的整合配套。在文古3井现场应用,取得良好效果。该工艺排液速度快,施工安全,可控制排液深度,尤其适用于含天然气井施工。

This technique connects the liquid nitrogen pump, Liquid Nitrogen container or/and Liquid Nitrogen generator with coiled tubing and thus forms a integrated set for fracturing and flowing-back operations. Very good results were obtained when the technique was applied in Well Wengu3. It has some advantages such as unloading very fast, operating safely, being able to control unloading depth and so on, and is especially applicable for operation in gas wells.