XH1井窄压力窗口小间隙超深井尾管固井技术  

Liner Cementing in Ultra-deep Well Xuanhan-1 with Narrow Drilling Window and Small Annular Clearance

作　　者：张世玉 Zhang Shiyu(Cementing Company of Zhongyuan Petroleum Engineering Co.,Ltd.,Sinopec,Henan Puyang 457000)

机构地区：[1]中石化中原石油工程有限公司固井公司,河南濮阳457001

出　　处：《石化技术》2021年第5期114-115,共2页Petrochemical Industry Technology

摘　　要：XH1井完钻井深6365m,用尾管悬挂固井方式。针对生产尾管固井存在井深井温高、压力窗口窄、环空间隙小、钻井液与水泥浆污染严重等诸多难点,通过采用抗高温加重胶乳防腐防窜水泥浆体系、抗污染冲洗隔离液体系、平衡压力固井等配套技术措施,确保了固井质量优质。The Well XH1 was completed at a depth of 6365m and run inФ146.1 mm liner.Difficulties encountered during liner cementing included HTHP,narrow drilling window,small annular clearance,drilling fluid and cement paste has a bad compatibility.In order to address these difficulties,several measures are applied to the cementing,such as a thermo-stable,anti-channeling,corrosion resistant latex heavyweight cement slurry system;a anti-contamination flushing spacer liquid system;balanced pressure cementing technique.The Well Xuanhan-1 was successfully cemented with high cementing job.

关 键 词：超深井 窄压力窗口 小间隙 防腐防窜 平衡压力 尾管固井 

分 类 号：TE256[石油与天然气工程—油气井工程]