New cement slurries have been developed with significantly reduced greenhouse gas footprints when compared to conventional cement slurries used for oil and gas well cementing operations. The slurries consist of geopolymeric materials exhibiting superior chemical and mechanical properties at a competitive cost saving. A key attribute of the geopolymer technology is its robustness and versatility which enables products to have specific properties for slurries at densities as low as 1200 kg/m3. In these slurries, cement has been replaced by up to 60% of its weight with aluminosilicate materials. This includes lightweight slurries with high compressive and flexural strengths and desirable elasticity. The new slurry has been successfully placed as a lightweight lead cement in intermediate casing operations. The short- and long-term performances of the new blend will be presented in relation to each of its various well applications.

Keywords:
cement property, Upstream Oil & Gas, cement, mechanical property, casing and cementing, strength, operation, reduction, cement slurry, cement formulation
Subjects:
Casing and Cementing, Cement formulation (chemistry, properties)
Copyright 2008, Society of Petroleum Engineers
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