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        Short description
        The drill pipes are used for well drilling, lifting of the drill through tools, transmitting rotation, creation of axial load on the tools, and supply of flushing fluid or compressed air to the bottom hole.

        Drill pipes

        The drill pipes are joined together with the help of tool joints with a special tool-joint thread.

        The pipe ends are thickened by external, internal or combined upset to increase their strength.

        The drill pipes are made by means of welding of the tool joint pin and box on the upset ends of drill pipe body.

        The drill pipes and tool joints comply with the requirements as follows:

        • API Spec 5DР
        • API Spec 7-2/ISO10424-2
        • API RP 7G
        • GOST R 50278-92; GOST 27834-95
        • TU 14-157-107, TU 14- 161-219
        Name of Regulatory Technical Document Sizes of pipes Length, m Strength group Type of tool joint Type of upset
        Nominal outer diameter, mm Wall thickness, mm
        Drill Pipes with Weld-on Tool Joints GOST R 50278-92 60.3 7.1

        8.0 to 8.6 9.0 to 9.45

        11.9 to 12.5

        Д, E, Л, M, Р As per GOST 27834-95 External upset
        73 9.2
        88.9 9.4; 11.4
        101.6 8.4
        114.3

        8.6;

        10.9

        127 9.2; 12.7
        73 9 8.0 to 8.6 9.0 to 9.45 11.9 to 12.5 Д, E Internal upset
        88.9 9.2; 9/4; 11.4
        101.6 8; 8.4 Д, E, Л, M, Р
        114.3 8.6; 10.9 8.0 to 8.6 9.0 to 9.45 11.9 to 12.5 Д, E, Л, M, Р Combined upset
        127 9.2; 12.7
        139.7 9.2; 10.5
        Drill Pipes API Spec 5DР/І50 11961:2010  60.32 7.11 Interval 2 (9.14 to 9.75) 3 (12.19 to 12.5)  E, X, G NC 26 EU
        73.02 9.19 E, X, G NC 31 EU
        73.02 9.19 S NC 31 EU
        88.9 9.35 E, X, G NC 38 EU
        88.9 9.35 S NC 38 EU
        88.9 11.4 E, X, G NC 38 EU
        101.6 8.38 E NC 40 EU
        101.6 8.38 8.84 to 12.9 X, G NC 40 EU
        114.3 8.56; 10.92 8.84 to 12.9 E, X, G NC 46 IEU
        127 9.19; 12.7 8.84 to 12.9 E, X, G, S NC 50 IEU
        139.7   9.17; 10.54 8.84 to 12.9 E, X, G 5 1/2 FH IEU

        TOOL JOINTS OF DRILL PIPES

        Designation of tool joint typical size Designation of tool- joint thread Drill pipe D, mm L, mm Too; joint weight, kg
        Typical size Strength group +/-12.7
        ЗП-86-44 3.0 - 73.0 ПH-60х7.11 Д, E, Л, M 85.7 511 14.4
        ЗП-95-32 3.0 - 73.0 ПB-73х9.19 Д, E 95.2 511 22.7
        ЗП-105-54 3.0 - 86.0 ПH-73х9.19 Д, E 104.8 536.4 23.3
        ЗП-105-51 3.0  - 86.0 ПH-73х9.19 Л, M 104.8 536.4 24.2
        ЗП-111-41 3.0 - 86.0 ПH-73х9.19 P* 111.1 536.4 30.5
        ЗП-108-44 3.0  - 86.0 ПB-89х9.35 Д, E 108 536.4 29.5
        ЗП-108-41 3.0  - 86.0 ПB-89х11.40 Д, E 108 536.4 30.3
        ЗП-121-68 3 - 102 ПH-89х9.35 Д, E 120.7 600 32.5
        ЗП-127-65 3 - 102 ПH-89х9.35 Л 127 600 38.9
        ЗП-127-65 3 - 102 ПH-89х11.40 Д, E 127 600 38.9
        ЗП-127-62 3 -102 ПH-89х9.35 M 127 600 40.4
        ЗП-127-62 3-102 ПH-89х11.40 Л 127 600 40.4
        ЗП-127-54 3-102 ПH-89х9.35 P* 127 600 43.6
        ЗП-126-54 3-102 ПH-89х11.40 M 127 600 43.6
        ЗП-133-71 3-108 ПB-102х8.38 Д, E 133.4 576.8 39.7
        ЗП-133-68 3-108 ПB-102х8.38 Л 133A 576.4 41.1
        ЗП-140-62 3-108 ПB-102х8.38 M 139.7 576.8 48.6
        ЗП-140-51 3-108 ПB-102х8.38 P* 139.7 576.8 52.8
        ЗП-152-83 3-122 ПH-102х8.38 Д, E, Л, M 152.4 576.8 53.3
        ЗП-152-76 3-122 ПH-102х8.38 P* 152.4 576.8 56.8
        ЗП-159-83 3-122 ПK-114x8.5 6 Д, E 158.8 576.8 59.8
        ЗП-159-76 3-122 ПK-114х8.56 Л, M 158.8 576.8 63.3
        ЗП-159-76 3-122 ПK-114х10.92 Д, E 158.8 576.8 63.3
        ЗП-159-70 3-122 ПK-114х8.56 P* 158.8 576.8 66 A
        ЗП-159-70 3-122 ПK-114х10.92 Л 158.8 576.8 66.4
        ЗП-159-бЗ 3-122 ПK-114х10.92 M 158.8 576.8 69.3
        ЗП-159-57 3-122 ПK-114х10.92 P* 158.8 576.8 71.9
        ЗП-162-95-1 3-133 ПH-114х8.56 Д, E, Л, M 161.9 576.8 52.5
        ЗП-162-92 3-133 ПH-114х10.9 Д, E 161.9 576.8 54.6
        ЗП-162-89-1 3-133 ПH-114х8.56 P* 161.9 576.8 56.4
        ЗП-162-89-1 3-133 ПH-114х10.9 Л, M 161.9 576.8 56.4
        ЗП-168-76 3-133 ПH-114х10.9 P* 168.3 576.8 69.3
        ЗП-162-95-2 3-133 ПK-127х9.19 Д, E 161.9 576.8 53.2
        ЗП-162-89-2 3-133 ПK-127х9.19 Л 161.9 576.8 57
        ЗП-162-89-2 3-133 ПK-127х12.70 Д, E 161.9 576.8 57
        ЗП-165-83 3-133 ПK-127х9.19 M 165.1 576.8 63.6
        ЗП-165-76 3-133 ПK-127х12.70 Л 165.1 576.8 66.9
        ЗП-168-70 3-133 ПK-127х9.19 P* 168.3 576.8 72.9
        ЗП-168-70 3-133 ПK-127х12.70 M 168.3 576.8 72.9
        ЗП-178-102 3-147 ПH-127Х9Д9 Д, E, Л, M 177.8 607.2 69.8
        ЗП-178-102 3-147 ПH-127х12.7 Д, E 177.8 607.2 69.8
        ЗП-178-95 3 - 147 ПH-127х12.7 Л, M 177.8 607.2 74
        ЗП-178-102 3 - 147 ПK-140х9.17 Д, E 177.8 607.2 69.8
        ЗП-178-102 3 - 147 ПK-140х10.54 Д, E 177.8 607.2 69.8
        ЗП-178-95 3 - 147 ПK-140х9.17 Л 177.8 607.2 74
        ЗП-184-89 3 - 147 ПK-140х9.17 M 184.1 607.2 84.9
        ЗП-184-89 3-147 ПK-140х10.54 M 184.1 607.2 84.9
        ЗП-190-76 3-147 ПK-140х9.17 P* 190.5 618.2 98.9
        ЗП-190-76 3-147 ПK-140х10.54 P* 190.5 618.2 98.9

        INTERCHANGEABILITY OF TOOL-JOINT THREAD WITH FOREIGN ANALOGUES

        Designation of tool-joint thread Thread pitch, mm Cone ratio Analogue of thread as per API Spec 7 Form of thread profile as per GOST

        Form of thread profile as per

        API Spec 7

        3.0-65.0 6.35 1:6 NC-23 IV V-0.038R
        3.0-66.0 5.08 1:4 2 3/8 Reg I V-0.040
        3.0-73.0 6.35 1:6 NC-26 IV V-0.038R
        3.0-76.0 5.08 1:4 2 7/8 Reg I V-0.040
        3.0-86.0 6.35 1:6 NC-31 IV V-0.038R
        3.0-88.0 5.08 1:4 3 1/2 Reg  I V-0.040
        3.0-94.0 6.35 1:6 NC-35 IV V-0.038R
        3-101 5.08 1:4 3 1/2 FH I V-0.040
        3-102 6.35 1:6 NC-38 IV V-0.038Р
        3-108 6.35 1:6 NC-40 IV V-0.038R
        3-117 5.08 1:4 4 1/2 Reg I V-0.040
        3-118 6.35 1:6 NC-44 IV V-0.038R
        3-121 5.08 1:4 4 1/2 FH I V-0.040
        3-122 6.35 1:6 NC-46 IV V-0.038R
        3-133 6.35 1:6 NC-50 IV V-0.038R
        3-140 6.35 1:4 5 1/2 Reg II V-0.050
        3-147 6.35 1:6 5 1/2 FH III V-0.050
        3-149 6.35 1:4 NC-56 V V-0.038Р
        3-152 6.35 1:6 6 5/8 Reg III V-0.050
        3-161 6.35 1:6 - III -
        3-163 6.35 1:4 NC-61 V V-0.038R
        3-171 6.35 1:6 6 5/8 FH III V-0.050
        3-177 6.35 1:4 7 5/8 Reg II V-0.050
        3-185 6.35 1:4 NC-70 V V-0.038R
        3-189 6.35 1:6 - III -
        3-201 6.35 1:4 8 5/8 Reg II V-0.050
        3-203 6.35 1:4 NC-77 V V-0.038P

        MECHANICAL PROPERTIES OF DRILL PIPES AS PER GOST R 50278-92

        Strength group Ultimate strength, σB, MPa, Yield strength, σT, MPa Modulus of elongation δ5, %, at least
        At least At least At most
        Д 655 379 - 16
        E 689 517 724 14
        Л 724 655 862 14
        M 792 724 930 12
        P 999 930 1138 12

        MECHANICAL PROPERTIES OF DRILL PIPES AS PER API 5 Spec 5D

        Grades  

        Ultimate strength σB, H/mm2,

        at least

        Yield strength σT, H/mm2 Modulus of elongation δ5, %, at least
        min max
        E75 689 517 724 *
        X95 724 655 862 *
        G105 793 724 931 *
        S-135 1000 931 1138 *
        *

        - it is calculated according to the formula set forth in API Spec 5D  

          Specification

         
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