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View Diary: Daily Kos Oilpocolypse ROV #31 (387 comments)

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  •  Read that comment Claudius. Made perfect sense. (3+ / 0-)
    Recommended by:
    Yasuragi, Jaygar, Claudius Bombarnac

    Obviously. :)

    Stepping up to life eliminates the capacity for bullshit. - Robinswing

    by Onomastic on Tue Jun 01, 2010 at 01:26:59 PM PDT

    [ Parent ]

    •  I have another concern about the diamond wire (5+ / 0-)

      cutter. I think the pressures within the riser and drill string at the kink will deform the material at the cut point before the cut is finished.

      This will pinch and break the wire. It will be next to impossible to restart the cut.

      The odds of getting a clean cut, in my estimation, are very slim. The kink area is way too dynamically unstable.

      So, I would like to see them chew away at the kink with other means to relieve some of those forces before starting the diamond wire cutting procedure. Possibly even expose the drill string.

      Unfortunately, the drill casing is going to do God knows what when it is cut through. It's like cutting a pipe within a pipe with a hacksaw - if the inner pipe is not held absolutely still, it won't work. The blade simply binds.

      •  OK. That scares me to death. (2+ / 0-)
        Recommended by:
        Yasuragi, Claudius Bombarnac

        But wait a minute. Last I knew they were doing the diamond cutting below the kink - on the body of the BOP itself.

        What am I not getting?

        Stepping up to life eliminates the capacity for bullshit. - Robinswing

        by Onomastic on Tue Jun 01, 2010 at 01:49:23 PM PDT

        [ Parent ]

        •  The cut will be right below the kink on the same (2+ / 0-)
          Recommended by:
          Yasuragi, Onomastic

          piece of riser and leave a stub as far as I know from latest info.

          I had posted a few days ago that I thought the diamond cut would take place between the two flanges connecting the riser to the BOB. I also assumed they would use the hydraulic shears to cut the riser at or slightly below the kink.

          The wire would then would have been cutting through gasket material and bolts at a more rigid point.

          It seems I was wrong...

          •  So they changed where they positioned the (2+ / 0-)
            Recommended by:
            Yasuragi, Claudius Bombarnac

            diamond saw late last night/early this morning?

            Stepping up to life eliminates the capacity for bullshit. - Robinswing

            by Onomastic on Tue Jun 01, 2010 at 02:03:31 PM PDT

            [ Parent ]

            •  I never did see where the saw was positioned... (1+ / 0-)
              Recommended by:
              Onomastic

              so I don't know if it was changed.

              Because there are two LMRP Caps on site with different attachment configurations, it is possible they have two choices on where to cut.

              So, cutting between the flanges may already be one of their options. I sure hope so because I'd much prefer the cut there instead of leaving a stub.

              It's all educated guessing on my part...

              Now, there's the problem of what happens when the drill string gets cut through - will it drop down or will it get pushed up or will it just remain in position.

              •  If I'm at all clear on what we're discussing, (0+ / 0-)

                which on three hours sleep is always up for question, they positioned the saw where you think it should go.

                Not on top of the BOP where all the pipes are sticking out and kinked over, but lower on the BOP, either just above or below the flanges. That is if what I think are flanges happen to be what you're talking about.

                We need a diagram.

                Stepping up to life eliminates the capacity for bullshit. - Robinswing

                by Onomastic on Tue Jun 01, 2010 at 02:18:08 PM PDT

                [ Parent ]

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