PBL sub reliability

06 February 2011 I have seen a lot of BHAs pulled out of hole because of PBL sub malfunction. We (Baker Hughes) started an in house request for a multiple crculation sub - but unfortunately it was not developed.
The email I got back from Germany yesterday was advising to use the MI Well Commander , everything down to 6 3/4" is reliable from their operational experience - For the 4 3/4" Subs they got 5 runs and 5 x malfunction in the last months in Germany.

Because we do not track reliability of 3rd party tools in our system I cannot run a statistic on PBL subs or well commander - maybe I can get numbers for reliability from the operator side in this discussion group.

Peter-Joern Palten
Drilling Engr
Baker Hughes

13 Answer(s)

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