Akademik Veri Yönetim Sistemi
24th INTERNATIONAL MINING CONGRESS OF TURKEY, Antalya, Türkiye, 14 - 17 Nisan 2015, ss.445-451, (Tam Metin Bildiri)
Since 1900's, well cementing is one of the most substantial method in casing application of oil, gas and geothermal. The American Petroleum Institute (API) identifies well cements in 8 classes with respect to pressure, temperature and the depth of the well. G class cement is the most commonly used cement type for well casing purpose due to its sulphate resistance ability. High sulphate-resistant (HSR) G class cements are often used in well cementing industry. API Standards mainly focus on uniaxial compressive strength (UCS) value of cements cured for 8 and 24 hours. There is no any available research on the long term (14 days) properties of G class cement in the literature. This study presents the comparison of UCS and Elastic modulus (E) growth of 3 different G class cements (2 domestic, 1 foreign products) over 14 days curing time. During the laboratory studies, samples prepared in the laboratory conditions with different curing times (2, 7 and 14 days) are tested based on ASTM standards. It is concluded that the increase in the curing time improves the UCS and E of cements 2-3 times. Logarithmic relationships exist between curing time and UCS, E. Moreover, mechanical properties of these products show significant differences between each other. The UCS and E values of G class cement produced in Turkey have values incontrovertibly lower than that of an equivalent foreign product.