String Book - Logan Oil Tools

WeLD-on type tooL jointS maKe-Up torQUe
RECoMMEnDED MInIMuM o.D.* AnD MAkE-up toRQuE BASED on toRSIonAL StREngth oF BoX AnD DRILL pIpE
DRILL PIPE DATA NEW TOOL JOINT DATA PREMIUM CLASS CLASS 2
Upset Min. Box Min. O.D. Min. Box Min. O.D.
Nom. Nom. Type Make-up Min. O.D. Shoulder w/ Tool Joint Min. O.D. Shoulder w/ Tool Joint
Size Weight and New O.D. New I.D. Torque Tool Joint Eccentric Wear Make-up Torque Tool Joint Eccentric Wear Make-up Torque
(in) (lb/ft) Grade Connection (in) (in) (ft-lb) (in) (in) (ft-lb) (in) (in) (ft-lb)
21.90 IEU-E FH 7 4 27966 6-33/64b 17/64 19652 6-29/64b 15/64 17266
21.90 IEU-X FH 7 3-3/4 30676 6-43/64b 11/32 24892 6-37/64b 19/64 21870
IEU-X H90 7 3-1/2 29593 6-15/64b 23/64 24892 6-9/64b 5/16 21870
21.90 IEU-G FH 7-1/4 3-1/2 36241 6-3/4b 3/8 27512 6-21/32b 21/64 24172
5-1/2 21.90 IEU-S FH 7-1/2 3 43585 6-31/32b 31/64 35373 6-27/32b 27/64 31079
24.70 IEU-E FH 7 4 27966 6-19/32b 19/64 21945 6-1/2b 1/4 19288
24.70 IEU-X FH 7-1/4 3-1/2 36241 6-3/4b 3/8 27797 6-21/32b 21/64 24432
24.70 IEU-G FH 7-1/4 3-1/2 36241 6-27/32b 27/64 30723 6-47/64b 3/8 27003
24.70 IEU-S FH 7-1/2 3 43585 7-5/64b 35/64 39501 6-61/64b 31/16 34719
The use of outside diameters (O.D.) smaller than those listed in the table may be acceptable on Slim Hole (SH) tool joints due to special service requirements.
Tool joint with dimensions shown has a lower torsional yield ratio than the 0.80 which is generally used.
Recommended make-up torque for used tool joints is based on 72,000 psi stress. Recommended make-up torque for used tool joints that have not worn to the
minimum O.D. can be obtained as described in Par. 2.12.
In calculation of torsional strengths of tool joints, both new and worn, the bevels of the tool joint shoulders are disregarded. This thickness measurement should be
made in the plane of the face from the I.D. of the counterbore to the outside diameter of the box, disregarding the bevels.
Any tool joint with an outside diameter less than the API bevel diameter should be provided with a minimum 1/32" depth x 45° bevel on the outside and inside
diameter of the box shoulder and outside diameter of the pin shoulder.
p = pin limited yield. b = box limited yield. P or B indicates that tool joint could not meet 80% of tube torsion yield.
* Tool joint diameters specified are required to retain torsional strength in the tool joint comparable to the torsional strength of the attached drill pipe. These should be
adequate for all service. Tool joints with torsional strengths considerably below that of the drill pipe may be adequate for much drilling service.
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