Channeling problem in high temperature and high pressure
oil and gas well is always an extremely difficult question for all
oilfields , especially for long cementing interval in high
temperature and high pressure oil well. High temperature anti-
channeling cement slurry system has not only excellent anti-
channeling property but also other good properties , such as easily
adjustable thickening time , the compressive strength can develop
normally in low temperature. By taking multi-setting cement
slurry system , the long interval cementing problems in high
temperature and high pressure can be solved preferably. Since
successfully developed , this kind of cement slurry system has
been used in 15 wells , once cementing success rate reached
100 % , qualify rate was 100 % , excellent and good rate was 93.
3 %. Now this technology is relatively advanced in China.
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