The features of buried hill reservoir are described, and the use of two-stage cementing method, continuous open stage collar and cement basket is also presented.
Gradient multi-setting cement slurry system can take the place of double stage cementing in long isolation sections in certain degree, and it displaces many advantages.
The two-stage cementing technique was used for the protective casing of the horizonal well in Tahe oil field because of a long open-hole interval in secondary spudding.
