Competent Rock Connection Procedure

Post on 14-Sep-2015

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This is a connection procedure written for a 7th generation deepwater drillship.

Transcript of Competent Rock Connection Procedure

  • Rig: XXXX Connection Procedure Competent Rock Rev.: Rev 0Well: XXXX Date: 20/06/2015

    Signatures Drilling Supervisor: ___________________ Toolpusher: ___________________

    Distribution Drilling Supervisor, Drilling Engineer, 2 x Driller, 2 x Assistant Driller, SLB LMWD, SLB GEO, Halliburton Turbine

    Objective 1. Effective hole-cleaning with consistentconnection practice

    2. Minimise off-bottom work to maintain a gaugehole for good hole cleaning and trippingconditions

    # Operational Description Comments

    1.

    Drill stand down Driller to inform on radio when connection passes

    table for depth calibration do not stop

    Verify depth

    2.

    Pull off bottom + 2m using max 1 min Keep drilling RPM Keep 100% flow Read torque and weight as required

    Full drilling parameters for maximum hole-cleaning.

    3. Stop rotation

    4.

    P/U and record stable up and down weight Pull up 3-5 m and go down, max 10 m/min 100% flow moving up If ECD is high, stop 10sec on top before moving down 100% flow moving down if conditions allows (else

    80% flow moving down) Stop pumps

    100% flow to maintain hole-cleaning.

    5.

    Set slips on downward movement and make connection Fill pipe immediately w/400-1000lpm* while M/U

    connection Do not start rotation

    * Dependent on hole condition and hole size.

    Minimize static time to avoid settling of cuttings.

    6.

    Survey and Start up sequence When returns increase to 100% flow (max 1 min) Open slips Open compensator if required Wait 30-45 seconds after reached minimum turn on

    flow for MWD (300 gpm) Increase to drilling RPM

    If delayed survey is used, go directly to drilling withoutwaiting on (IN-SYNC)

    Obtain survey and apply hole cleaning parameters as fastas possible.

    7.Drill ahead

    Check pressure response when going on bottomAvoid going on bottom too fast.

    Excellent consistency