Exceptions to NS-2 North Sea Inspection Standard

Please note that these exceptions apply only to the specific operator, equipment manufacturer and equipment specified.

 Exception No.

 By

 Company

 Equipment
Exception

Exception Status
Shell/Anadril/001
Richard Hailes, Shell Expro
Shell Expro UESM Mobiles/Anadrill
Variable Gauge Stabiliser, Fluid Hammer
Certificate of Conformity not Available. Delivery note and test certificate are used and include all serial numbers, etc., for traceability
Accepted
Shell/Anadril/002
Richard Hailes, Shell Expro
Shell Expro UESM Mobiles/Anadrill
Material certification not available. Equipment in inventory released through a controlled procedure
Rejected for items procured after 1/4/200

Accepted for items procured before 1/4/2000

Shell/Anadril/003
Richard Hailes, Shell Expro
Shell Expro UESM Mobiles/Anadrill
Variable gauge stabiliser, fluid hammer
Lot numbers not specified on individual component. Lot numbers are traceable through unique serial numbers
Accepted
Shell/Anadril/004
Richard Hailes, Shell Expro
Shell Expro UESM Mobiles/Anadrill
Powerdrive Rotary Steerable
Bias Unit and Control unit bevels not within NS-2 tolerances. For bevels to meet, ODs of 2 items would need to be different, exposing the face seal of one item to the annulus.
Accepted
Shell/Anadril/005
Richard Hailes, Shell Expro
Shell Expro UESM Mobiles/Anadrill
Bent Subs
No SRG in pin end. The angle of the pin prohibits cutting of the SRG.
Accepted as Limited Service
Shell/Anadril/006
Richard Hailes, Shell Expro
Shell Expro UESM Mobiles/Anadrill
Near Bit Subs
No bore back in box ends. Length prohibits the application of bore back without making to tool to long for directional drilling purposes.
Accepted
Shell/Anadril/007
Richard Hailes, Shell Expro
Shell Expro UESM Mobiles/Anadrill
Near Bit Stabilisers
No bore back at bit end. Bit end bored for float, can not match BSR without reducing OD of stabilisers severely.
Accepted
Shell/Anadril/008
Richard Hailes, Shell Expro
Shell Expro UESM Mobiles/Anadrill
Powerpulse & Impluse MWD/LWD
No SRG or bore back. ID too large to apply SRG or bore back. Large ID allows tools to be secured inside collar
Accepted
Shell/Anadril/009
Richard Hailes, Shell Expro
Shell Expro UESM Mobiles/Anadrill
Driveshafts on all Powerpack mud motors
No SRG or bore back. Application of SRG or bore back would lengthen shaft and increase susceptibility to failure
Accepted
Shell/Anadril/010
Richard Hailes, Shell Expro
Shell Expro UESM Mobiles/Anadrill
Rocky back stabilisers
No SRG or bore back. Stabiliser too short to conform to minimum fishing dimensions
Accepted
Shell/Anadril/011
Richard Hailes, Shell Expro
Shell Expro UESM Mobiles/Anadrill
Mud motor internal connections, e.g. ACME threads
No SRG or bore back. ID of stator tube housing too large to allow SRGs or bore backs.
Accepted
Talisman/Pathfinder/001
Kevin Fearnley, OCTG Procter
Talisman/Pathfinder
Dyna-Drill PDM (Driveshaft Bit Box)
Client Third Party Inspector to witness MPI of connection
Accepted
Talisman/Pathfinder/002
Kevin Fearnley, OCTG Procter
Talisman/Pathfinder
Dyna-Drill PDM
Dyna-Drills manufactured as of 1st April 1999 onwards, only to be supplied unless hardness tests have been performed and documented. Lack of material certification.
Not Accepted
Talisman/Drilltech/003
Kevin Fearnley, OCTG Procter
Talisman/Drilltech
6.5/8" Reg Pin x 6.5/8" FH box crossover with 8" OD
Crossovers only to be used as limited service, i.e. crossing over from transition pipe (HWDP) to collars and not between colloars. BSRs outside recommended range.
Accepted
Talisman/Anadrill/004
Kevin Fearnley, OCTG Procter
Talisman/Anadrill
6" Hydraulic Adjustable Stabiliser
Client third party inspector to verify on load-outs that this tool configuration is to be used in "near bit" BHA setup. Due to pin weak connection, client third party inspector to witness MPI of connection.
Accepted
Shell/Anadril/012
Richard Hailes, Shell Expro
Shell Expro UESM Mobiles/Anadrill
Non-Magnetic Materials
No requirement for SRGs in connection sizes up to and including NC38
Accepted
Talisman/SPS AFOS/005
Kevin Fearnley, OCTG Procter
Talisman/SPS AFOS
MFCT Clutch Type
The MFCT does not have the conventional stress relief features machined to pin and box. Although this tool is classified as non-drilling it still sees rotation, albeit at low cyclic stress and its inspection frequency is very routine. Exception is issued on the following: Thread roots are cold rolled after machining (this should be documented in tool history file). Client third party to witness MPI of connections or to verify suppliers inspectors are competent and certified.

Accepted
Talisman/Weir Houston Engineers/007
Owen Jenkins, OCTG Procter
Talisman/Weir Houston Engineers
Drilling Jar
API Boreback Lengths
Accepted
Talisman/Weir Houston Engineers/008
Owen Jenkins, OCTG Procter
Talisman/Weir Houston Engineers
Drilling Jar
API Pin and Box Tong Lengths
Accepted
Shell/Weir Houston Engineers/013
Owen Jenkins, OCTG Procter
Shell Expro/Weir Houston Engineers
Drilling Jar
Supply of jars with old-style shart WHE boreback stress relief features in box connections
Shell/Weir Houston Engineers/014
Owen Jenkins, OCTG Procter
Shell Expro/Weir Houston Engineers
Drilling Jar
Reduced Tong Lengths
Shell/Weir Houston Engineers/015
Grant Stewart
Shell Expro/Weir Houston Engineers
Drilling Jars and Accelerators
Cold-rolling/working of Threads and Stress Relief areas 
Accepted

If you require more details of any of the above exceptions, please contact kevin.fearnley@fearnleyprocter.co.uk