氮气膨胀剂在胜利油田固井中的应用

APPLICATION OF NITROGEN SWELLING AGENT IN CEMENTING IN SHENGLI OILFIELD

李玉海 刁胜贤

Li Yuhai Diao Shengxian

胜利石油管理局黄河固井公司, 山东东营 257061

Yellow River Cementing Co., Shengli Petroleum Administration Bureau

氮气膨胀剂在固井防气窜中起着重要的作用。介绍了胜利油田现河、王家岗、胜坨等区块防气窜外加剂——氮气膨胀剂的性能、特点及作用机理。现场应用结果表明,氮气膨胀剂是高压油气井、井径扩大率超标井、长封固段井及特殊井防气窜、提高固井质量的重要手段

Nitrogen swelling agent is vital for controlling gas channelling during cementing.The properties,characteristics and working mechanisms of nitrogen swelling agent were described,and it was used as gas channelling controlling additive in such blocks as Xianhe,Wang Jiagang,and Shengtuo in Shengli Oilfield.Field using showed that,for such wells as high-pressured oil and gas wells,wells of over enlarged borehole,wells with long isolation sections and some special wells,using nitrogen swelling agent is an effective way to control gas channeling and improve cementing quality.

10.3969/j.issn.1000-7393.2003.01.009