摘要
冲洗液YJC-1主要由有机溶剂、表面活性剂和螯合剂组成,具有对油包水钻井液强力渗透、增溶、乳化和螯合的复合效果,能在短时间内迅速有效地将附着在井壁、套管壁上的油浆、油膜洗净,冲洗率达100％,使井壁和套管壁从“油湿”变成“水湿”状态,有利于水泥石的界面胶结,即冲洗后界面胶结强度有所增加。通过应用螯合剂,很好地解决了冲洗液与油包水钻井液的相容性问题,提高了冲洗液的耐温性能(耐温高达200 ℃)。现场应用了4口井,固井质量优质,表明冲洗液YJC-1提高了油包水钻井液完钻井的固井质量。
Flushing fluid YJC-1 is mainly composed of an organic solvent, surfactants and a chelating agent. It has compound effects on oil based drilling fluid such as strong permeation osmosis, solubilization, emulsion and chelation. It helps clean out oil slurry and oil film on the wellbore and the casing wall with flushing efficiency of 100% in short time, turns the wall from 'oil-wet' to 'water-wet', which is good for interfa-tial cementation. The chelating agent exibits good compatibility between flushing fluid and oil based drilling fluid, and increase its resisting temperature up to 200℃. Applications of 4 wells showed excellent cementing quality.
出处
《钻井液与完井液》
CAS
北大核心
2001年第4期11-15,22,共6页
Drilling Fluid & Completion Fluid
关键词
冲洗液
油包水钻井液
固井质量
胶结强度
flashing fluid
oil based drilling fluid
cementing quality
gel strength
