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The official international standard for oilwell cements is ISO 10426-1, known in Europe as the European Standard EN ISO 10426-1. There are eight ISO CIasses for oilwell cements, designated A, B, C, D, E, F, G and H and the Grades O (Ordinary), MSR (Medium Sulphate Resistant) and HSR (High Sulphate Resistant). In the paper the different classes of oilwell cements are defined, and chemical as well as...
Cementy hydrofobowe nadają się do stosowania w klimacie zimnym, mokrym i wietrznym oraz w obszarach o dużej wilgotności lub w miejscach odległych, gdzie nie ma dobrych warunków magazynowania. Są one regularnie stosowane w szeregu krajów, takich jak Rosja, Indie i Chiny, w których hydrofobowa powłoka na ziarnach cementu chroni cement (zwłaszcza cement workowany) przed pogorszeniem własności spowodowanym...
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