CLR Run History

Latest Offshore CLR Runs 

 The Core Level Recorder has proven on a recent offshore coring campaign in SE Asia that it accurately records core intake, loss and core expansion while POOH. Although, no milling or jamming occurred on these wells the data provided has allowed the drilling operator to redefine the pull out of hole speeds and prevent core from being damaged.


This information also gives evidence that trip speeds should be reviewed in more detail per job specific.  Previously, the belief within the coring industry is that trip speeds should be reduced as the core is getting closer to the surface. However, the CLR results proves that core gas breakout can occur in early stages while POOH. 


The data is also extremely useful if additional core runs are planned as the data can be aligned with any issues seen during the core run. This data is then used to assist in optimising coring parameters to achieve a better core recovery on subsequent core runs.  The data will be downloaded assessed and recommendations given prior to even making up the inner tubes between core runs. The data can be used to determine if core was lost when coming off bottom or when POOH, therefore providing a better understanding of the entire coring process from start to finish.