... Laboratory UCS data can be plotted on a core log for the correlation of rock strength to petrological features. However, in heterogeneous reservoirs of complex sedimentology and mineralogy, the often-infrequent sample interval of UCS data makes accurate correlation and extrapolation difficult...

... of its durability at high temperature thermal cycling (<450 0 C) and compatibality with of Portland cement is an ideal composition for application in thermal recovery wells. The formulated thermally stable cement slurry with graphite and metakaolin has no significant effect on compressive strength...