Well Integrity Technical Section

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  • 1.  BEST PRACTICES WHILE CHANGING A FAILURE ESP

    Posted 07-10-2016 03:22 AM

    Dear Team,

    With reference to our telephone conversation last week Regarding the BEST PRACTICES WHILE CHANGING A FAILURE ESP from well integrity and barrier envelopes point of view, please find undermentioned highlights:

    Operation steps:

    1. INSTALLED B.P.V. IN TBG HGR, N/D 3 1/8" 3 K FMC X·MASS TREE & E.A.S.
    2. N/U BOP STACK, BELL NIPPLE & FLOW LINE.
    3. UNTIGHTEN L.D.S., UNSET TBG. HGR., CHECK CABLE BANOS & X.COUPLING, OK, CUT CABLE UNDER SPLICE, REMOVED FEED. THROUGH, PUT DUMMY PENT. & LANDED SAME AGAIN IN T.H.S.
    4. P/T BOP STACK AS PER Q.ARUN STANDARD, OK.
    5. POOH W/ TBG HGR, L/D SAME & R/U PREMIERE POWER TONG.
    6. POOH W/ ESP COMP. STRG ON 2-718" EUE TBG. & L/D SAME.

    My question is: what is the control for the well just in case started to flow while in step 3, as BOP have not been tested yet ?

    On other hand, does these are the best practices or there are other safe steps to be done ?

    Best regards,

    ------------------------------
    Safwat El-Rebba
    Opeartion Engineer
    Egyptian General Petroleum Corporation
    Cairo
    ONE TEAM … ONE TARGET …
    ------------------------------


  • 2.  RE: BEST PRACTICES WHILE CHANGING A FAILURE ESP

    Posted 07-11-2016 02:42 AM

    Safwat,

     

    In the step 3, you can run with tubing hanger Retrieving Tool and Joint, screw in and m/u the connection to the hanger, then pressure test the BOP against the R.J. prior to undo tie down screws. Make sure you install proper pipe rams in BOP for your R.J.

     

    If your case is ESP without completion packer (no natural flow from the well), the other way is to install TWCV straight away and pressure test the BOP against it (tubing pressure can be monitored via A-annulus as they are connected)

     

    Regards

     

    Kazem Kiani Nassab

    SDE PTTEP Public Company Limited

     

     

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    ------Original Message------

    Dear Team,

    With reference to our telephone conversation last week Regarding the BEST PRACTICES WHILE CHANGING A FAILURE ESP from well integrity and barrier envelopes point of view, please find undermentioned highlights:

    Operation steps:

    1. INSTALLED B.P.V. IN TBG HGR, N/D 3 1/8" 3 K FMC X·MASS TREE & E.A.S.
    2. N/U BOP STACK, BELL NIPPLE & FLOW LINE.
    3. UNTIGHTEN L.D.S., UNSET TBG. HGR., CHECK CABLE BANOS & X.COUPLING, OK, CUT CABLE UNDER SPLICE, REMOVED FEED. THROUGH, PUT DUMMY PENT. & LANDED SAME AGAIN IN T.H.S.
    4. P/T BOP STACK AS PER Q.ARUN STANDARD, OK.
    5. POOH W/ TBG HGR, L/D SAME & R/U PREMIERE POWER TONG.
    6. POOH W/ ESP COMP. STRG ON 2-718" EUE TBG. & L/D SAME.

    My question is: what is the control for the well just in case started to flow while in step 3, as BOP have not been tested yet ?

    On other hand, does these are the best practices or there are other safe steps to be done ?

    Best regards,

    ------------------------------
    Safwat El-Rebba
    Opeartion Engineer
    Egyptian General Petroleum Corporation
    Cairo
    ONE TEAM … ONE TARGET …
    ------------------------------


  • 3.  RE: BEST PRACTICES WHILE CHANGING A FAILURE ESP

    Posted 07-12-2016 03:35 AM

    ESP tubing hanger often has the tubing thread offset from the centreline (due to the cable / penetrator. 

    Probably best to stump test BOP offline. You'll still have last connection to test.

    ------------------------------
    Terry Greaney

    Original Message


  • 4.  RE: BEST PRACTICES WHILE CHANGING A FAILURE ESP

    Posted 07-13-2016 01:06 PM

    Dear Team, 

    Thanks a lot for your response...

    Meanwhile, I had a meeting today with Joint Venture Company and ESP provider representatives who feed me that the type of this TBG hanger is Feed Through, ie does not contains a plug for the penetrator, as the round cable is spliced down the hanger with 12' and go through the hanger hole then spliced after away from the top with 12' (does not have surface / lower Big Tail).

    I will plan for more comprehensive meeting to understand what is behind this way and why not using the ordinary penetrator with surface/ lower big tail.

    Best regards,

    ------------------------------
    Safwat El-Rebba
    Egyptian General Petroleum Corporation
    Cairo
    ONE TEAM ... ONE TARGET ...

    Original Message