Abstract
The challenges created by HPHT conditions make drilling and cementing difficult. The overwhelming challenge stands for materials used for wells operated at higher temperature and pressures in the face of producing downhole. There is need for better choice of cement for cementing operations during development and production of wells. The review method is adopted in this article considering Calcium Oxide which poses as good cement expander. In this paper, a broad overview of the fundamental understanding and use of calcium oxide as additive is considered for cementation of HPHT production wells will be discussed.
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