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tu ha you tian pu bei 3-12 jing chao chang feng gu duan gu jing ji shu
Author(s): 
Pages: 57-59
Year: Issue:  6
Journal: DRILLING FLUID & COMPLETION FLUID

Keyword:  泡沫水泥浆长裸眼固井井漏固井质量防止地层损害;
Abstract: 葡北3-12注气井位于吐哈盆地葡北构造带中断葡北1号构造,井深为3610 m.针对该区块地层承压能力低,易漏失,油气水窜严重,常规固井方法无法满足固井要求的问题,该井采用三段三凝制、常规水泥浆和泡沫水泥浆体系固井,并采用重钻井液顶替技术,降低施工压力.该技术能保证固井候凝过程中井底压力平衡,施工安全.现场应用表明,采用常规水泥浆和泡沫水泥浆固井技术,提高了低压易漏井、长封固井段的固井质量,解决了水泥返高不足的问题;并通过一次常规固井工艺实现了全井封固,简化了施工工艺,节约了成本,经济效益和社会效益十分显著.该井封固优质段累计达2600m,优质率达85%,固井结果良好.
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