Thursday, March 08, 2007

CBL finally done!

It took 54 hours for TPG to do the logging, but after the earlier cable problem, followed by a broken tool problem, they finally managed to do a good job. We are starting to know the engineer, Anton, and he was perfectly fine with our sitting in his logging unit for the important bits. Progress!!
I was trying to have a conversation with him and was despairing at my complete loss of Russian understanding when Sasha told me that Anton was speaking in colloquial Russian. No wonder...!



When we get the printout from CBL logs, we need to do some basic interpretation on them; nothing too detailed but just to capture the key points. A CBL log looks at the bond between the cement that has been pumped down the well and squirted up the outside, and the casing. It is supposed to form a bonding layer between the rock and the casing. The casing is made of metal, and the amplitude of the vibration of the casing is measured, to see whether it is unattached or attached, and therefore, whether or not we have a good cement bond. More on CBL here.



Here is a picture of the CBL printout (we need to correlate it to the Gamma Ray measured during the PEX logging, to make sure we know where we are in the well). And yes, that is the full length of our caravan!


No comments: