• Troubleshooting

    High Break-out Torque

    Possible Root Cause

    Action

    Bad positioning of tongs on break-out (gripping thin section of box)

    Ensure that tong free area on box connection is respected

    False break-out torque reading (torquing equipment calibration)

    Make sure that torquing equipment is calibrated

    Downhole make-up (downhole dynamics, likely combined with improper make-up)

    • Check bottom-hole assembly tool dynamic recording (if available)

    • Use downhole make-up search technique (see section below)

    • Increase make-up torque (if not at maximum accounting for dope friction factor)

    • Follow 5 points of "insufficient torque applied" (see below)

    Insufficient torque applied during run-in-hole

    • Check torquing equipment calibration (lower than expected make-up can lead to downhole torquing)

    • Confirm what the recommended (max) make-up torque is (performance sheet)

    • Apply recommended make-up torque (accounting for thread compound friction factor)

    • Respect the tong-free area on box connection

    • Monitor make-up torque on next run-in-hole and break-out torque on next pull-out-of-hole

    Suspected connection damage

    Get inspection company to confirm

    Downhole make-up search technique

    If downhole make-up is suspected, place punch marks on the pin and box after initial make-up next to the sealing shoulders when running-in-hole. With downhole make-up, the position of the punch marks will change on pull-out-of-hole (1/4" move is indicative of downhole make-up).

    Downhole make-up can cause:

    • Compressed/belled box counterbores
    • Compressed pin noses

    Low Break-out Torque

    Possible Root Cause

    Action

    False make-up torque (torquing equipment calibration, gripping thin section of box)

    • Check torquing equipment calibration

    • Check that clamping pressure is not excessive

    • Confirm what the recommended (max) make-up torque is (performance sheet)

    • Apply recommended make-up torque (accounting for thread compound friction factor)

    • Respect the tong-free area on box connection

    • Monitor make-up torque on next run-in-hole and break-out torque on next pull-out-of-hole

    False break-out torque reading (torquing equipment calibration, IRN not capable of giving break-out torque reading)

    • Check torquing equipment capability to give break-out torque

    • Check torquing equipment calibration

    • Respect the tong-free area on box connection

    Downhole dynamics (likely combined with improper make-up)

    • Check bottom-hole assembly tool dynamic recording (if available)

    • Check torquing equipment calibration

    • Check that clamping pressure is not excessive

    • Confirm what the recommended (max) make-up torque is (performance sheet)

    • Apply recommended make-up torque (accounting for thread compound friction factor) and increase make-up torque (if feasible)

    • Respect the tong-free area on box connection

    • Monitor make-up torque on next run-in-hole and break-out torque on next pull-out-of-hole

    Damaged sealing shoulders

    Possible Root Cause

    Action

    Pitting: lack of protection by thread compound, no application on sealing shoulders

    • Make sure shoulders receive thread compound

    • Make sure protectors are clean

    Galling: lack of compound application, contamination of compound

    • Make sure shoulders receive thread compound

    • Check condition of saver sub

    • Make sure that joints with galled shoulders are segregated and repaired

    Micro-washout: insufficient pressure on shoulders, presence of contaminant, out of length connection

    • Check compound is not contaminated (by foreign material)

    • Make sure brush hair is not falling off

    • Make sure recommended make-up torque is applied

    Damaged thread/galling/pitting

    Possible Root Cause

    Action

    Pitting: lack of protection by thread compound (compound breaking by drilling/completion fluid)

    • Make sure connections receive 100% coverage of thread compound

    • Make sure protectors are clean

    • Make sure dope is compatible with drilling fluid

    Galling: lack of compound application, contamination of compound

    • Make sure that joints with galled shoulders are segregated and repaired

    • Check condition of saver sub

    • Make sure connections receive 100% coverage of thread compound

    Washout

    Possible Root Cause

    Action

    Connection Washout

    • Remove impacted connection from service (look for other connection to confirm limited damage)

    • Check connection length (stretch or compression)

    • Check torquing equipment calibration

    • Check that clamping pressure is not excessive

    • Confirm what the recommended (max) make-up torque is (performance sheet)

    • Apply recommended make-up torque (accounting for thread compound friction factor)

    • Respect the tong-free area on box connection

    • Monitor make-up torque on next run-in-hole & confirm issue is fixed