The conductor pipe runs from the seafloor/surface to relatively shallow depths providing a conduit to allow circulation of drilling fluid as well as case off unconsolidated formations. It is the first string that is used to support well control equipment, typically a drilling diverter. A common size for the conductor casing pipe is 24″, 26″ or 30″ and it is set from 40m to 5OO m below the seafloor/surface. Here we will discuss in detail conductor casing pipe specifications, connectors, installation, hammering, and running operations in oil and gas wells. We shall also provide conductor pipes specifications sheets
Conductor casing Pipe supports the wellhead, the weight of all subsequent casing strings and tubing in many wells, but there are many other wells where the conductor plays no role as a structural member. It maintains borehole integrity through the usually soft surface formations. It seldom gives us any pressure control though because the formations in which it is set often have very little strength so its role in maintaining borehole integrity is relatively short-lived and severely limited.
As conductor casing pipe is considered one of the Types Of Casing, so its specifications are the same as casing specifications.
Oil and Gas Conductor Casing Pipe Specifications Tables
Below we have gathered some of the Conductor casing pipe specs tables that you can use from oil and gas NOV & Varcogray
XL Systems–National Oilwell Varco—XLC-S
Type: Integral, flush Seal: Metal-to-metal
OD | Weight | ID (drift), in. | wall thickness | Connection OD, in. | Casing wall critical cross-sectional | Connection critical cross-sectional | Tensile efficiency, % | Compression efficiency, % | L-80 Joint strength, kips | L-80 Yield torque ft-lb | P-110 Joint strength kips | P-110 Yield torque ft-lb | Q-125 Joint strength kips | Q-125 Yield torque ft-lb |
26 | 202.3 | 24.5 | 0.75 | 26 | 59.494 | 39.427 | 66 | 66 | 3,154 | 233,000 | 4,337 | 320,000 | 4,928 | 364,000 |
26 | 267 | 24 | 1 | 26 | 78.54 | 55.097 | 70 | 70 | 4,408 | 319,000 | 6,061 | 439,000 | 6,887 | 498,000 |
26 | 330.4 | 23.5 | 1.25 | 26 | 97.193 | 75.519 | 78 | 78 | 6,042 | 429,000 | 8,307 | 590,000 | 9,440 | 670,000 |
26 | 392.5 | 23 | 1.5 | 26 | 115.454 | 91.118 | 79 | 79 | 7,289 | 508,000 | 10,023 | 698,000 | 11,390 | 793,000 |
30 | 234.3 | 28.5 | 0.75 | 30 | 68.919 | 45.61 | 66 | 66 | 3,649 | 313,000 | 5,017 | 430,000 | 5,701 | 489,000 |
30 | 309.7 | 28 | 1 | 30 | 91.106 | 63.805 | 70 | 70 | 5,104 | 431,000 | 7,019 | 592,000 | 7,976 | 673,000 |
30 | 383.8 | 27.5 | 1.25 | 30 | 112.901 | 87.583 | 78 | 78 | 7,007 | 581,000 | 9,634 | 799,000 | 10,948 | 908,000 |
30 | 456.6 | 27 | 1.5 | 30 | 134.303 | 105.796 | 79 | 79 | 8,464 | 691,000 | 11,638 | 950,000 | 13,225 | 1,079,000 |
30 | 528 | 26.5 | 1.75 | 30 | 155.312 | 124.079 | 80 | 80 | 9,926 | 797,000 | 13,649 | 1,095,000 | 15,510 | 1,245,000 |
30 | 598.1 | 26 | 2 | 30 | 175.929 | 141.912 | 81 | 81 | 11,353 | 896,000 | 15,610 | 1,232,000 | 17,739 | 1,400,000 |
32 | 250.3 | 30.5 | 0.75 | 32 | 73.631 | 48.701 | 66 | 66 | 3,896 | 358,000 | 5,357 | 492,000 | 6,088 | 559,000 |
32 | 331.1 | 30 | 1 | 32 | 97.389 | 68.159 | 70 | 70 | 5,453 | 493,000 | 7,497 | 677,000 | 8,520 | 770,000 |
32 | 410.5 | 29.5 | 1.25 | 32 | 120.755 | 93.615 | 78 | 78 | 7,489 | 666,000 | 10,298 | 916,000 | 11,702 | 1,041,000 |
32 | 488.6 | 29 | 1.5 | 32 | 143.728 | 113.135 | 79 | 79 | 9,051 | 793,000 | 12,445 | 1,090,000 | 14,142 | 1,238,000 |
32 | 565.4 | 28.5 | 1.75 | 32 | 166.308 | 132.75 | 80 | 80 | 10,620 | 916,000 | 14,603 | 1,259,000 | 16,594 | 1,431,000 |
32 | 640.8 | 28 | 2 | 32 | 188.496 | 151.902 | 81 | 81 | 12,152 | 1,032,000 | 16,709 | 1,419,000 | 18,988 | 1,612,000 |
34 | 266.3 | 32.5 | 0.75 | 34 | 78.343 | 51.792 | 66 | 66 | 4,143 | 405,000 | 5,697 | 557,000 | 6,474 | 633,000 |
34 | 352.4 | 32 | 1 | 34 | 103.673 | 72.514 | 70 | 70 | 5,801 | 559,000 | 7,977 | 768,000 | 9,064 | 873,000 |
34 | 437.2 | 31.5 | 1.25 | 34 | 128.609 | 99.646 | 77 | 77 | 7,972 | 757,000 | 10,961 | 1,041,000 | 12,456 | 1,183,000 |
34 | 520.7 | 31 | 1.5 | 34 | 153.153 | 120.473 | 79 | 79 | 9,638 | 902,000 | 13,252 | 1,240,000 | 15,059 | 1,409,000 |
34 | 602.8 | 30.5 | 1.75 | 34 | 177.304 | 141.421 | 80 | 80 | 11,314 | 1,043,000 | 15,556 | 1,434,000 | 17,678 | 1,630,000 |
34 | 683.5 | 30 | 2 | 34 | 201.062 | 161.893 | 81 | 81 | 12,951 | 1,177,000 | 17,808 | 1,618,000 | 20,237 | 1,839,000 |
36 | 282.4 | 34.5 | 0.75 | 36 | 83.056 | 54.884 | 66 | 66 | 4,391 | 456,000 | 6,037 | 627,000 | 6,861 | 712,000 |
36 | 373.8 | 34 | 1 | 36 | 109.956 | 76.868 | 70 | 70 | 6,149 | 629,000 | 8,455 | 865,000 | 9,609 | 983,000 |
36 | 463.9 | 33.5 | 1.25 | 36 | 136.463 | 105.678 | 77 | 77 | 8,454 | 853,000 | 11,625 | 1,173,000 | 13,210 | 1,333,000 |
36 | 552.7 | 33 | 1.5 | 36 | 162.577 | 127.812 | 79 | 79 | 10,225 | 1,018,000 | 14,059 | 1,400,000 | 15,977 | 1,590,000 |
36 | 640.1 | 32.5 | 1.75 | 36 | 188.299 | 150.092 | 80 | 80 | 12,007 | 1,179,000 | 16,510 | 1,621,000 | 18,762 | 1,842,000 |
36 | 726.2 | 32 | 2 | 36 | 213.628 | 171.883 | 80 | 80 | 13,751 | 1,332,000 | 18,907 | 1,831,000 | 21,485 | 2,081,000 |
38 | 298.4 | 36.5 | 0.75 | 38 | 87.768 | 57.975 | 66 | 66 | 4,638 | 509,000 | 6,377 | 700,000 | 7,247 | 796,000 |
38 | 395.2 | 36 | 1 | 38 | 116.239 | 81.222 | 70 | 70 | 6,498 | 704,000 | 8,934 | 968,000 | 10,153 | 1,100,000 |
38 | 490.6 | 35.5 | 1.25 | 38 | 144.317 | 111.71 | 77 | 77 | 8,937 | 956,000 | 12,288 | 1,314,000 | 13,964 | 1,493,000 |
38 | 584.7 | 35 | 1.5 | 38 | 172.002 | 135.151 | 79 | 79 | 10,812 | 1,141,000 | 14,867 | 1,569,000 | 16,894 | 1,783,000 |
38 | 677.5 | 34.5 | 1.75 | 38 | 199.295 | 158.763 | 80 | 80 | 12,701 | 1,323,000 | 17,464 | 1,819,000 | 19,845 | 2,067,000 |
38 | 769 | 34 | 2 | 38 | 226.195 | 181.873 | 80 | 80 | 14,550 | 1,496,000 | 20,006 | 2,057,000 | 22,734 | 2,337,000 |
40 | 314.4 | 38.5 | 0.75 | 40 | 92.481 | 61.066 | 66 | 66 | 4,885 | 566,000 | 6,717 | 778,000 | 7,633 | 884,000 |
40 | 416.5 | 38 | 1 | 40 | 122.522 | 85.576 | 70 | 70 | 6,846 | 783,000 | 9,413 | 1,076,000 | 10,697 | 1,223,000 |
40 | 517.3 | 37.5 | 1.25 | 40 | 152.171 | 117.742 | 77 | 77 | 9,419 | 1,064,000 | 12,952 | 1,463,000 | 14,718 | 1,662,000 |
40 | 616.8 | 37 | 1.5 | 40 | 181.427 | 142.49 | 79 | 79 | 11,399 | 1,271,000 | 15,674 | 1,748,000 | 17,811 | 1,987,000 |
40 | 714.9 | 36.5 | 1.75 | 40 | 210.29 | 167.433 | 80 | 80 | 13,395 | 1,475,000 | 18,418 | 2,029,000 | 20,929 | 2,305,000 |
40 | 811.7 | 36 | 2 | 40 | 238.761 | 191.863 | 80 | 80 | 15,349 | 1,670,000 | 21,105 | 2,296,000 | 23,983 | 2,609,000 |
40 | 907.1 | 35.5 | 2.25 | 40 | 266.839 | 221.51 | 83 | 83 | 17,721 | 1,904,000 | 24,366 | 2,618,000 | 27,689 | 2,975,000 |
42 | 330.4 | 40.5 | 0.75 | 42 | 97.193 | 64.158 | 66 | 66 | 5,133 | 625,000 | 7,057 | 860,000 | 8,020 | 977,000 |
42 | 437.9 | 40 | 1 | 42 | 128.805 | 89.931 | 70 | 70 | 7,194 | 866,000 | 9,892 | 1,191,000 | 11,241 | 1,353,000 |
42 | 544 | 39.5 | 1.25 | 42 | 160.025 | 123.774 | 77 | 77 | 9,902 | 1,178,000 | 13,615 | 1,619,000 | 15,472 | 1,840,000 |
42 | 648.8 | 39 | 1.5 | 42 | 190.852 | 149.828 | 79 | 79 | 11,986 | 1,409,000 | 16,481 | 1,937,000 | 18,729 | 2,201,000 |
42 | 752.3 | 38.5 | 1.75 | 42 | 221.286 | 176.104 | 80 | 80 | 14,088 | 1,636,000 | 19,371 | 2,250,000 | 22,013 | 2,557,000 |
42 | 854.4 | 38 | 2 | 42 | 251.327 | 201.854 | 80 | 80 | 16,148 | 1,853,000 | 22,204 | 2,548,000 | 25,232 | 2,896,000 |
42 | 955.2 | 37.5 | 2.25 | 42 | 280.976 | 223.36 | 79 | 79 | 17,869 | 2,027,000 | 24,570 | 2,787,000 | 27,920 | 3,167,000 |
44 | 346.4 | 42.5 | 0.75 | 44 | 101.905 | 67.249 | 66 | 66 | 5,380 | 688,000 | 7,397 | 945,000 | 8,406 | 1,074,000 |
44 | 459.2 | 42 | 1 | 44 | 135.088 | 94.285 | 70 | 70 | 7,543 | 953,000 | 10,371 | 1,310,000 | 11,786 | 1,489,000 |
44 | 570.7 | 41.5 | 1.25 | 44 | 167.879 | 129.806 | 77 | 77 | 10,384 | 1,297,000 | 14,279 | 1,784,000 | 16,226 | 2,027,000 |
44 | 680.9 | 41 | 1.5 | 44 | 200.277 | 157.167 | 78 | 78 | 12,573 | 1,553,000 | 17,288 | 2,135,000 | 19,646 | 2,427,000 |
44 | 789.7 | 40.5 | 1.75 | 44 | 232.282 | 184.775 | 80 | 80 | 14,782 | 1,805,000 | 20,325 | 2,482,000 | 23,097 | 2,821,000 |
44 | 897.1 | 40 | 2 | 44 | 263.894 | 211.844 | 80 | 80 | 16,948 | 2,046,000 | 23,303 | 2,814,000 | 26,481 | 3,198,000 |
44 | 1003.3 | 39.5 | 2.25 | 44 | 295.113 | 245.21 | 83 | 83 | 19,617 | 2,342,000 | 26,973 | 3,221,000 | 30,651 | 3,660,000 |
46 | 362.5 | 44.5 | 0.75 | 46 | 106.618 | 70.34 | 66 | 66 | 5,627 | 753,000 | 7,737 | 1,035,000 | 8,793 | 1,176,000 |
46 | 480.6 | 44 | 1 | 46 | 141.372 | 98.639 | 70 | 70 | 7,891 | 1,044,000 | 10,850 | 1,436,000 | 12,330 | 1,632,000 |
46 | 597.4 | 43.5 | 1.25 | 46 | 175.733 | 135.838 | 77 | 77 | 10,867 | 1,423,000 | 14,942 | 1,956,000 | 16,980 | 2,223,000 |
46 | 712.9 | 43 | 1.5 | 46 | 209.701 | 164.506 | 78 | 78 | 13,160 | 1,705,000 | 18,096 | 2,344,000 | 20,563 | 2,663,000 |
46 | 827 | 42.5 | 1.75 | 46 | 243.277 | 193.446 | 80 | 80 | 15,476 | 1,983,000 | 21,279 | 2,726,000 | 24,181 | 3,098,000 |
46 | 939.8 | 42 | 2 | 46 | 276.46 | 221.834 | 80 | 80 | 17,747 | 2,249,000 | 24,402 | 3,093,000 | 27,729 | 3,514,000 |
46 | 1051.3 | 41.5 | 2.25 | 46 | 309.251 | 257.13 | 83 | 83 | 20,570 | 2,579,000 | 28,284 | 3,546,000 | 32,141 | 4,030,000 |
46 | 1161.5 | 41 | 2.5 | 46 | 341.648 | 291.593 | 85 | 85 | 23,327 | 2,893,000 | 32,075 | 3,978,000 | 36,449 | 4,521,000 |
48 | 378.5 | 46.5 | 0.75 | 48 | 111.33 | 73.432 | 66 | 66 | 5,875 | 821,000 | 8,078 | 1,129,000 | 9,179 | 1,283,000 |
48 | 502 | 46 | 1 | 48 | 147.655 | 102.994 | 70 | 70 | 8,240 | 1,140,000 | 11,329 | 1,568,000 | 12,874 | 1,781,000 |
48 | 624.1 | 45.5 | 1.25 | 48 | 183.587 | 141.87 | 77 | 77 | 11,350 | 1,554,000 | 15,606 | 2,137,000 | 17,734 | 2,428,000 |
48 | 744.9 | 45 | 1.5 | 48 | 219.126 | 171.845 | 78 | 78 | 13,748 | 1,863,000 | 18,903 | 2,562,000 | 21,481 | 2,911,000 |
48 | 864.4 | 44.5 | 1.75 | 48 | 254.273 | 202.117 | 79 | 79 | 16,169 | 2,169,000 | 22,233 | 2,982,000 | 25,265 | 3,388,000 |
48 | 982.6 | 44 | 2 | 48 | 289.027 | 231.825 | 80 | 80 | 18,546 | 2,462,000 | 25,501 | 3,385,000 | 28,978 | 3,846,000 |
48 | 1099.4 | 43.5 | 2.25 | 48 | 323.388 | 268.779 | 83 | 83 | 21,502 | 2,825,000 | 29,566 | 3,884,000 | 33,597 | 4,413,000 |
XL Systems–National Oilwell Varco—XLF
Type: Integral, flush Seal: Metal-to-metal
OD | Weight | ID (drift), in. | wall thickness | Connection OD, in. | Casing wall critical cross-sectional | Connection critical cross-sectional | Tensile efficiency, % | Compression efficiency, % | L-80 Joint strength, kips | L-80 Yield torque ft-lb | P-110 Joint strength kips | P-110 Yield torque ft-lb | Q-125 Joint strength kips | Q-125 Yield torque ft-lb+O78:O101O78:O1O78:O105 |
20 | 104.1 | 19 | 0.5 | 20 | 30.631 | 15.879 | 52 | 52 | 1,270 | 73,000 | 1,747 | 100,000 | 1,985 | 113,000 |
20 | 129.3 | 18.75 | 0.625 | 20 | 38.043 | 20.082 | 53 | 53 | 1,607 | 91,000 | 2,209 | 125,000 | 2,510 | 142,000 |
20 | 131.3 | 18.73 | 0.635 | 20 | 38.631 | 20.082 | 52 | 52 | 1,607 | 91,000 | 2,209 | 125,000 | 2,510 | 142,000 |
20 | 154.2 | 18.5 | 0.75 | 20 | 45.357 | 25.076 | 55 | 55 | 2,006 | 112,000 | 2,758 | 154,000 | 3,135 | 175,000 |
20 | 166.4 | 18.376 | 0.812 | 20 | 48.948 | 25.076 | 51 | 51 | 2,006 | 111,000 | 2,758 | 153,000 | 3,135 | 174,000 |
20 | 202.9 | 18 | 1 | 20 | 59.69 | 38.455 | 64 | 64 | 3,076 | 167,000 | 4,230 | 230,000 | 4,807 | 261,000 |
20 | 250.3 | 17.5 | 1.25 | 20 | 73.631 | 50.994 | 69 | 69 | 4,080 | 216,000 | 5,609 | 298,000 | 6,374 | 338,000 |
22 | 114.8 | 21 | 0.5 | 22 | 33.772 | 17.488 | 52 | 52 | 1,399 | 88,000 | 1,924 | 122,000 | 2,186 | 138,000 |
22 | 142.7 | 20.75 | 0.625 | 22 | 41.97 | 22.124 | 53 | 53 | 1,770 | 111,000 | 2,434 | 152,000 | 2,766 | 173,000 |
22 | 170.2 | 20.5 | 0.75 | 22 | 50.069 | 27.636 | 55 | 55 | 2,211 | 137,000 | 3,040 | 188,000 | 3,455 | 213,000 |
22 | 224.3 | 20 | 1 | 22 | 65.973 | 42.426 | 64 | 64 | 3,394 | 205,000 | 4,667 | 282,000 | 5,303 | 320,000 |
22 | 277 | 19.5 | 1.25 | 22 | 81.485 | 56.319 | 69 | 69 | 4,506 | 266,000 | 6,195 | 366,000 | 7,040 | 416,000 |
24 | 125.5 | 23 | 0.5 | 24 | 36.914 | 19.096 | 52 | 52 | 1,528 | 106,000 | 2,101 | 145,000 | 2,387 | 165,000 |
24 | 156 | 22.75 | 0.625 | 24 | 45.897 | 24.165 | 53 | 53 | 1,933 | 132,000 | 2,658 | 182,000 | 3,021 | 207,000 |
24 | 186.2 | 22.5 | 0.75 | 24 | 54.782 | 30.196 | 55 | 55 | 2,416 | 164,000 | 3,322 | 225,000 | 3,775 | 256,000 |
24 | 245.6 | 22 | 1 | 24 | 72.257 | 46.397 | 64 | 64 | 3,712 | 246,000 | 5,104 | 339,000 | 5,800 | 385,000 |
24 | 303.7 | 21.5 | 1.25 | 24 | 89.339 | 61.644 | 69 | 69 | 4,932 | 321,000 | 6,781 | 441,000 | 7,706 | 501,000 |
24 | 360.5 | 21 | 1.5 | 24 | 106.029 | 70.174 | 66 | 66 | 5,614 | 357,000 | 7,719 | 491,000 | 8,772 | 559,000 |
26 | 136.2 | 25 | 0.5 | 26 | 40.055 | 20.705 | 52 | 52 | 1,656 | 125,000 | 2,278 | 171,000 | 2,588 | 195,000 |
26 | 169.4 | 24.75 | 0.625 | 26 | 49.824 | 26.207 | 53 | 53 | 2,097 | 156,000 | 2,883 | 215,000 | 3,276 | 244,000 |
26 | 202.3 | 24.5 | 0.75 | 26 | 59.494 | 32.756 | 55 | 55 | 2,620 | 193,000 | 3,603 | 266,000 | 4,095 | 302,000 |
26 | 267 | 24 | 1 | 26 | 78.54 | 50.368 | 64 | 64 | 4,029 | 292,000 | 5,540 | 401,000 | 6,296 | 456,000 |
26 | 330.4 | 23.5 | 1.25 | 26 | 97.193 | 66.969 | 69 | 69 | 5,358 | 380,000 | 7,367 | 523,000 | 8,371 | 594,000 |
26 | 392.5 | 23 | 1.5 | 26 | 115.454 | 76.268 | 66 | 66 | 6,101 | 425,000 | 8,389 | 584,000 | 9,534 | 664,000 |
28 | 146.9 | 27 | 0.5 | 28 | 43.197 | 22.313 | 52 | 52 | 1,785 | 145,000 | 2,454 | 199,000 | 2,789 | 226,000 |
28 | 182.7 | 26.75 | 0.625 | 28 | 53.751 | 28.248 | 53 | 53 | 2,260 | 182,000 | 3,107 | 250,000 | 3,531 | 284,000 |
28 | 218.3 | 26.5 | 0.75 | 28 | 64.206 | 35.315 | 55 | 55 | 2,825 | 225,000 | 3,885 | 310,000 | 4,414 | 352,000 |
28 | 288.4 | 26 | 1 | 28 | 84.823 | 54.339 | 64 | 64 | 4,347 | 341,000 | 5,977 | 468,000 | 6,792 | 532,000 |
28 | 357.1 | 25.5 | 1.25 | 28 | 105.047 | 72.294 | 69 | 69 | 5,784 | 445,000 | 7,952 | 612,000 | 9,037 | 696,000 |
28 | 424.5 | 25 | 1.5 | 28 | 124.878 | 82.362 | 66 | 66 | 6,589 | 498,000 | 9,060 | 685,000 | 10,295 | 778,000 |
30 | 196.1 | 28.75 | 0.625 | 30 | 57.678 | 30.29 | 53 | 53 | 2,423 | 210,000 | 3,332 | 288,000 | 3,786 | 327,000 |
30 | 234.3 | 28.5 | 0.75 | 30 | 68.919 | 37.875 | 55 | 55 | 3,030 | 260,000 | 4,166 | 357,000 | 4,734 | 406,000 |
30 | 309.7 | 28 | 1 | 30 | 91.106 | 58.31 | 64 | 64 | 4,665 | 393,000 | 6,414 | 541,000 | 7,289 | 615,000 |
30 | 383.8 | 27.5 | 1.25 | 30 | 112.901 | 77.619 | 69 | 69 | 6,210 | 515,000 | 8,538 | 708,000 | 9,702 | 805,000 |
30 | 456.6 | 27 | 1.5 | 30 | 134.303 | 88.456 | 66 | 66 | 7,076 | 577,000 | 9,730 | 794,000 | 11,057 | 902,000 |
30 | 528 | 26.5 | 1.75 | 30 | 155.312 | 110.584 | 71 | 71 | 8,847 | 710,000 | 12,164 | 976,000 | 13,823 | 1,109,000 |
30 | 598.1 | 26 | 2 | 30 | 175.929 | 130.267 | 74 | 74 | 10421 | 832000 | 14329 | 1131000 | 16283 | 1285000 |
XL Systems–National Oilwell Varco—Viper
Type: Weld-on pin and box Seal: Internal elastomeric and external metal-to-metal
OD | Weight | ID (drift), in. | wall thickness | Connection OD, in. | Casing wall critical cross-sectional | Connection critical cross-sectional | Tensile efficiency, % | Compression efficiency, % | L-80 Joint strength, kips | L-80 Yield torque ft-lb | P-110 Joint strength kips | P-110 Yield torque ft-lb | Q-125 Joint strength kips | Q-125 Yield torque ft-lb |
16 | 72.9 | 14.624 | 0.438 | 17.5 | 21.414 | 31.038 | 144.9 | 99.8 | 2,483 | 171,451 | – | – | – | – |
16 | 77.7 | 14.564 | 0.468 | 17.5 | 22.836 | 31.038 | 135.9 | 93.6 | 2,483 | 171,451 | – | – | – | – |
16 | 82.8 | 14.5 | 0.5 | 17.5 | 24.347 | 31.038 | 127.5 | 87.8 | 2,483 | 171,451 | – | – | – | – |
16 | 102.7 | 14.25 | 0.625 | 17.5 | 30.189 | 39.675 | 131.4 | 98.9 | 3,174 | 232,802 | – | – | – | – |
16 | 112.6 | 14.124 | 0.688 | 17.5 | 33.096 | 45.25 | 136.7 | 93.7 | 3,620 | 234,007 | – | – | – | – |
16 | 122.3 | 14 | 0.75 | 17.5 | 35.932 | 45.25 | 125.9 | 86.3 | 3,620 | 234,007 | – | – | – | – |
18.625 | 85.2 | 17.249 | 0.438 | 20.35 | 25.026 | 36.15 | 144.5 | 95.1 | 2,892 | 223,035 | – | – | – | – |
18.625 | 90.8 | 17.189 | 0.468 | 20.35 | 26.696 | 36.15 | 135.4 | 89.2 | 2,892 | 223,035 | – | – | – | – |
18.625 | 96.9 | 17.125 | 0.5 | 20.35 | 28.471 | 36.15 | 127 | 83.6 | 2,892 | 223,035 | – | – | – | – |
18.625 | 120.3 | 16.875 | 0.625 | 20.35 | 35.343 | 45.938 | 130 | 82.3 | 3,675 | 271,069 | – | – | – | – |
18.625 | 131.9 | 16.749 | 0.688 | 20.35 | 38.769 | 53.625 | 138.3 | 91.5 | 4,290 | 310,389 | – | – | – | – |
18.625 | 143.3 | 16.625 | 0.75 | 20.35 | 42.117 | 53.625 | 127.3 | 84.2 | 4,290 | 310,389 | – | – | – | – |
20 | 91.6 | 18.53 | 0.438 | 21.62 | 26.918 | 49.825 | 185.1 | 120.9 | 3,986 | 306,595 | – | – | – | – |
20 | 104.2 | 18.5 | 0.5 | 21.62 | 30.631 | 49.825 | 162.7 | 106.3 | 3,986 | 306,595 | – | – | – | – |
20 | 129.4 | 18.25 | 0.625 | 21.62 | 38.043 | 49.825 | 131 | 85.6 | 3,986 | 306,595 | – | – | – | – |
20 | 154.3 | 18 | 0.75 | 21.62 | 45.357 | 63.925 | 140.9 | 91.2 | 5,114 | 386,308 | – | – | – | – |
20 | 166.6 | 17.876 | 0.812 | 21.62 | 48.948 | 63.925 | 130.6 | 84.5 | 5,114 | 386,308 | – | – | – | – |
20 | 203.1 | 17.5 | 1 | 21.62 | 59.69 | 54.125 | 90.7 | 59.3 | 4,330 | 452,924 | – | – | – | – |
20 | 227 | 16.9 | 1.125 | 21.62 | 66.71 | 80.888 | 121.3 | 105.4 | 6,471 | 575,810 | – | – | – | – |
20 | 250.5 | 16.9 | 1.25 | 21.62 | 73.631 | 80.888 | 109.9 | 95.5 | 6,471 | 575,810 | – | – | – | – |
20 | 296.6 | 16.5 | 1.5 | 21.62 | 87.179 | 80.888 | 92.8 | 80.6 | 6,471 | 575,810 | – | – | – | – |
22 | 101 | 20.53 | 0.438 | 23.8 | 29.67 | 55.638 | 187.5 | 145.9 | 4,451 | 479,151 | – | – | – | – |
22 | 114.9 | 20.5 | 0.5 | 23.8 | 33.772 | 55.638 | 164.7 | 128.2 | 4,451 | 479,151 | – | – | – | – |
22 | 142.8 | 20.25 | 0.625 | 23.8 | 41.97 | 55.638 | 132.6 | 103.2 | 4,451 | 479,151 | – | – | – | – |
22 | 170.4 | 20 | 0.75 | 23.8 | 50.069 | 67.225 | 134.3 | 106.6 | 5,378 | 576,414 | – | – | – | – |
22 | 183.9 | 19.876 | 0.812 | 23.8 | 54.05 | 67.225 | 124.4 | 98.7 | 5,378 | 576,414 | – | – | – | – |
22 | 224.5 | 19.5 | 1 | 23.8 | 65.973 | 76.925 | 116.6 | 96.8 | 6,154 | 658,016 | – | – | – | – |
22 | 251 | 18.9 | 1.125 | 23.8 | 73.778 | 86.663 | 117.5 | 115.4 | 6,933 | 809,562 | – | – | – | – |
22 | 277.3 | 18.9 | 1.25 | 23.8 | 81.485 | 86.663 | 106.4 | 104.5 | 6,933 | 809,562 | – | – | – | – |
22 | 328.7 | 18.5 | 1.5 | 23.8 | 96.604 | 86.663 | 89.7 | 88.1 | 6,933 | 809,562 | – | – | – | – |
24 | 125.6 | 22.15 | 0.5 | 25.8 | 36.914 | 68.513 | 185.6 | 168.6 | 5,481 | 732,375 | – | – | – | – |
24 | 156.2 | 22.15 | 0.625 | 25.8 | 45.897 | 68.513 | 149.3 | 135.6 | 5,481 | 732,375 | – | – | – | – |
24 | 186.4 | 22 | 0.75 | 25.8 | 54.782 | 68.513 | 125.1 | 113.6 | 5,481 | 732,375 | – | – | – | – |
24 | 201.3 | 21.876 | 0.812 | 25.8 | 59.152 | 82.913 | 140.2 | 116.9 | 6,633 | 789,503 | – | – | – | – |
24 | 245.9 | 21.5 | 1 | 25.8 | 72.257 | 82.913 | 114.7 | 95.7 | 6,633 | 789,503 | – | – | – | – |
24 | 275.1 | 20.9 | 1.125 | 25.8 | 80.847 | 93.938 | 116.2 | 114.2 | 7,515 | 975,484 | – | – | – | – |
24 | 304 | 20.9 | 1.25 | 25.8 | 89.339 | 93.938 | 105.1 | 103.4 | 7,515 | 975,484 | – | – | – | – |
24 | 360.8 | 20.5 | 1.5 | 25.8 | 106.029 | 93.938 | 88.6 | 87.1 | 7,515 | 975,484 | – | – | – | – |
26 | 136.3 | 24.15 | 0.5 | 27.8 | 40.055 | 73.738 | 184.1 | 168.5 | 5,899 | 864,301 | – | – | – | – |
26 | 169.5 | 24.15 | 0.625 | 27.8 | 49.824 | 73.738 | 148 | 135.5 | 5,899 | 864,301 | – | – | – | – |
26 | 202.4 | 24 | 0.75 | 27.8 | 59.494 | 73.738 | 123.9 | 113.5 | 5,899 | 864,301 | – | – | – | – |
26 | 218.6 | 23.876 | 0.812 | 27.8 | 64.254 | 90.188 | 140.4 | 116.3 | 7,215 | 932,958 | – | – | – | – |
26 | 267.3 | 23.5 | 1 | 27.8 | 78.54 | 90.188 | 114.8 | 95.2 | 7,215 | 932,958 | – | – | – | – |
26 | 299.2 | 22.9 | 1.125 | 27.8 | 87.916 | 101.838 | 115.8 | 113 | 8,147 | 1,156,863 | – | – | – | – |
26 | 330.7 | 22.9 | 1.25 | 27.8 | 97.193 | 101.838 | 104.8 | 102.2 | 8,147 | 1,156,863 | – | – | – | – |
26 | 392.9 | 22.5 | 1.5 | 27.8 | 115.454 | 101.838 | 88.2 | 86.1 | 8,147 | 1,156,863 | – | – | – | – |
28 | 147 | 26.15 | 0.5 | 29.8 | 43.197 | 79.975 | 185.1 | 164.4 | 6,398 | 1,007,147 | – | – | – | – |
28 | 182.9 | 26.15 | 0.625 | 29.8 | 53.751 | 79.975 | 148.8 | 132.1 | 6,398 | 1,007,147 | – | – | – | – |
28 | 218.5 | 26 | 0.75 | 29.8 | 64.206 | 79.975 | 124.6 | 110.6 | 6,398 | 1,007,147 | – | – | – | – |
28 | 236 | 25.876 | 0.812 | 29.8 | 69.356 | 96.638 | 139.3 | 114.8 | 7,731 | 1,088,382 | – | – | – | – |
28 | 288.6 | 25.5 | 1 | 29.8 | 84.823 | 96.638 | 113.9 | 93.9 | 7,731 | 1,088,382 | – | – | – | – |
28 | 323.2 | 24.9 | 1.125 | 29.8 | 94.984 | 109.538 | 115.3 | 112.8 | 8,763 | 1,353,703 | – | – | – | – |
28 | 357.4 | 24.9 | 1.25 | 29.8 | 105.047 | 109.538 | 104.3 | 102 | 8,763 | 1,353,703 | – | – | – | – |
28 | 424.9 | 24.5 | 1.5 | 29.8 | 124.878 | 109.538 | 87.7 | 85.8 | 8,763 | 1,353,703 | – | – | – | – |
30 | 157.7 | 27.65 | 0.5 | 32 | 46.338 | 106.988 | 230.9 | 235.8 | 8,559 | 1,601,052 | – | – | – | – |
30 | 196.3 | 27.65 | 0.625 | 32 | 57.678 | 106.988 | 185.5 | 189.4 | 8,559 | 1,601,052 | – | – | – | – |
30 | 234.5 | 27.65 | 0.75 | 32 | 68.919 | 106.988 | 155.2 | 158.5 | 8,559 | 1,601,052 | – | – | – | – |
30 | 310 | 27.5 | 1 | 32 | 91.106 | 106.988 | 117.4 | 119.9 | 8,559 | 1,601,052 | – | – | – | – |
30 | 347.3 | 26.78 | 1.125 | 32 | 102.053 | 133.125 | 130.4 | 137.9 | 10,650 | 1,889,490 | – | – | – | – |
30 | 384.2 | 26.78 | 1.25 | 32 | 112.901 | 133.125 | 117.9 | 124.6 | 10,650 | 1,889,490 | – | – | – | – |
30 | 457 | 26.5 | 1.5 | 32 | 134.303 | 133.125 | 99.1 | 104.8 | 10,650 | 1,889,490 | – | – | – | – |
30 | 528.5 | 25.9 | 1.75 | 32 | 155.312 | 150.663 | 97 | 110.8 | 12,053 | 2,165,271 | – | – | – | – |
30 | 598.6 | 25.5 | 2 | 32 | 175.929 | 150.663 | 85.6 | 97.8 | 12,053 | 2,165,271 | – | – | – | – |
32 | 168.4 | 29.65 | 0.5 | 34 | 49.48 | 113.913 | 230.2 | 231.6 | 9,113 | 1,829,649 | – | – | – | – |
32 | 209.6 | 29.65 | 0.625 | 34 | 61.605 | 113.913 | 184.9 | 186 | 9,113 | 1,829,649 | – | – | – | – |
32 | 250.5 | 29.65 | 0.75 | 34 | 73.631 | 113.913 | 154.7 | 155.7 | 9,113 | 1,829,649 | – | – | – | – |
32 | 331.4 | 29.5 | 1 | 34 | 97.389 | 113.913 | 117 | 117.7 | 9,113 | 1,829,649 | – | – | – | – |
32 | 371.3 | 28.78 | 1.125 | 34 | 109.121 | 142.35 | 130.5 | 134.4 | 11,388 | 2,163,167 | – | – | – | – |
32 | 410.9 | 28.78 | 1.25 | 34 | 120.755 | 142.35 | 117.9 | 121.5 | 11,388 | 2,163,167 | – | – | – | – |
32 | 489.1 | 28.5 | 1.5 | 34 | 143.728 | 142.35 | 99 | 102 | 11,388 | 2,163,167 | – | – | – | – |
32 | 565.9 | 27.9 | 1.75 | 34 | 166.308 | 160.7 | 96.6 | 109.5 | 12,856 | 2,485,833 | – | – | – | – |
32 | 641.4 | 27.5 | 2 | 34 | 188.496 | 160.7 | 85.3 | 96.7 | 12,856 | 2,485,833 | – | – | – | – |
34 | 179.1 | 31.65 | 0.5 | 36 | 52.622 | 120.713 | 229.4 | 230.2 | 9,657 | 2,073,497 | – | – | – | – |
34 | 223 | 31.65 | 0.625 | 36 | 65.532 | 120.713 | 184.2 | 184.8 | 9,657 | 2,073,497 | – | – | – | – |
34 | 266.6 | 31.65 | 0.75 | 36 | 78.343 | 120.713 | 154.1 | 154.6 | 9,657 | 2,073,497 | – | – | – | – |
34 | 352.8 | 31.5 | 1 | 36 | 103.673 | 120.713 | 116.4 | 116.8 | 9,657 | 2,073,497 | – | – | – | – |
34 | 395.4 | 30.78 | 1.125 | 36 | 116.19 | 150.7 | 129.7 | 133.3 | 12,056 | 2,458,775 | – | – | – | – |
34 | 437.6 | 30.78 | 1.25 | 36 | 128.609 | 150.7 | 117.2 | 120.4 | 12,056 | 2,458,775 | – | – | – | – |
34 | 521.1 | 30.5 | 1.5 | 36 | 153.153 | 150.7 | 98.4 | 101.1 | 12,056 | 2,458,775 | – | – | – | – |
34 | 603.3 | 29.9 | 1.75 | 36 | 177.304 | 169.638 | 95.7 | 109.1 | 13,571 | 2,828,530 | – | – | – | – |
34 | 684.2 | 29.5 | 2 | 36 | 201.062 | 169.638 | 84.4 | 96.2 | 13,571 | 2,828,530 | – | – | – | – |
36 | 282.6 | 31.22 | 0.75 | 36.88 | 83.056 | 173.3 | 208.7 | 270.8 | 13,864 | 2,830,291 | – | – | – | – |
36 | 374.2 | 31.22 | 1 | 36.88 | 109.956 | 173.3 | 157.6 | 204.6 | 13,864 | 2,830,291 | – | – | – | – |
36 | 419.4 | 31.22 | 1.125 | 36.88 | 123.258 | 173.3 | 140.6 | 182.5 | 13,864 | 2,830,291 | – | – | – | – |
36 | 464.3 | 31.22 | 1.25 | 36.88 | 136.463 | 173.3 | 127 | 164.8 | 13,864 | 2,830,291 | – | – | – | – |
36 | 553.2 | 31.22 | 1.5 | 36.88 | 162.577 | 173.3 | 106.6 | 138.3 | 13,864 | 2,830,291 | – | – | – | – |
36 | 640.7 | 31.22 | 1.75 | 36.88 | 188.299 | 189.5 | 100.6 | 92.7 | 15,160 | 2,261,941 | – | – | – | – |
36 | 726.9 | 31.22 | 2 | 36.88 | 213.628 | 189.5 | 88.7 | 81.7 | 15,160 | 2,261,941 | – | – | – | – |
36 | 811.8 | 30.15 | 2.25 | 36.88 | 238.565 | 219.3 | 91.9 | 96.5 | 17,544 | 2,884,661 | – | – | – | – |
36 | 895.3 | 30.15 | 2.5 | 36.88 | 263.108 | 219.3 | 83.3 | 87.5 | 17,544 | 2,884,661 | – | – | – | – |
38 | 298.7 | 33.22 | 0.75 | 38.88 | 87.768 | 182.75 | 208.2 | 272.7 | 14,620 | 3,189,264 | – | – | – | – |
38 | 395.5 | 33.22 | 1 | 38.88 | 116.239 | 182.75 | 157.2 | 205.9 | 14,620 | 3,189,264 | – | – | – | – |
38 | 443.5 | 33.22 | 1.125 | 38.88 | 130.327 | 182.75 | 140.2 | 183.7 | 14,620 | 3,189,264 | – | – | – | – |
38 | 491.1 | 33.22 | 1.25 | 38.88 | 144.317 | 182.75 | 126.6 | 165.9 | 14,620 | 3,189,264 | – | – | – | – |
38 | 585.3 | 33.22 | 1.5 | 38.88 | 172.002 | 182.75 | 106.2 | 139.2 | 14,620 | 3,189,264 | – | – | – | – |
38 | 678.1 | 33.22 | 1.75 | 38.88 | 199.295 | 201.638 | 101.2 | 91.7 | 16,131 | 2,548,581 | – | – | – | – |
38 | 769.7 | 33.22 | 2 | 38.88 | 226.195 | 201.638 | 89.1 | 80.8 | 16,131 | 2,548,581 | – | – | – | – |
38 | 859.9 | 32.15 | 2.25 | 38.88 | 252.702 | 231.113 | 91.5 | 96.3 | 18,489 | 3,257,936 | – | – | – | – |
38 | 948.7 | 32.15 | 2.5 | 38.88 | 278.816 | 231.113 | 82.9 | 87.3 | 18,489 | 3,257,936 | – | – | – | – |





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Vetcogray Connectors and conductor casing pipes specs
Conductor Casing Pipe Connections in Oil And Gas Wells

Conductor casing pipe joints installed on oil and gas land rigs (Check also types of drilling rigs) are usually connected by welding beveled prepared ends of the pipes together. This is a time-consuming operation that requires an average of three hours per joint.
On a Jack-up, to reduce the time of the operations and when it is practicable, drivable threaded quick connectors (i.e. the RL-4) and drivable squnch joint connectors such as the Fast Releasing Joint (i.e. the ALT-2), should be used.
A Squnch Joint
- A Squnch Joint is a threadless automatic mechanical lock/release connection that makes up without rotation. The extremely strong weight-set connection is well suited for connecting large diameter conductor casing joints, and connecting the casing to the wellhead housing extension.
- The type ALT-2 heavy-duty squnch joint is used for pipe joins generally up to 36” OD, but larger sizes are available.
- It is easily stabbed, drivable, reusable and can be released mechanically.
- It is suitable for the severest conditions above the mud line and can be used below the mud line when the conductor is driven into place. The 20” ALT-2 is an ideal high pressure housing extension connector, with an internal pressure rating of up to 5,000psi.
- The type ST-2 standard duty squnch joint is not a drivable connector. It is used to connect pipe joints up to 30” OD, and is run into a pre-drilled hole and cemented in place. It is recommended for use above the mud line and is reusable and mechanically released.
The Quick Thread Connection
The Quick Thread Connection RL-4 is a very rigid connection for conductor and casing connections and requires just one-quarter turn for full makeup.
The helix angle of the patented, interlocking thread form, in combination with other connector geometries, creates a preload force between the pin and box. The 30” and larger RL-4 conductor casing connectors have a generous shoulder for efficient driving.
the anti-rotation tab
- Four identical threads 90° apart make-up simultaneously. The thread interface is tapered at 4” per ft of diameter. The connector box has four slots cut on the OD, close to the shoulder of the box and the connector pin has four recessed grooves cut on its OD adjacent to the slots on the box.
- To activate the anti-rotation tab, a 90° incision is made with the impact tool into the anti-rotation slot. A strip of metal is bent into the recessed groove in the pin which provides a positive mechanical lock.
It does not need power tongs for make-up and is releasable and reusable. It has a high 9° stab angle with dual stab guides. A negative 5° back rake thread interlock reduces belling tendency.

Conductor Casing Pipe Installation Hammers Types For Oil & Gas Wells

As we mentioned before, a conductor casing pipe (CP) is necessary to provide a riser and flow path for drilling mud from the well to the surface circulating system in Drilling. The outside diameter and the wall thickness of the conductor pipe should be chosen according to previous experiences in the area and the selected casing profile.
Conductor casing Pipe installation can be done either by driving with a pile hammer or by pre-drilling a hole and cementing.
Conductor Casing Pipes Installation Pile Hammers
Diesel pile hammers are used for surface installation & driving operations on conductor casing pipes in oil and gas wells. The driving depth of the conductor casing pipe is a function of the sediments in the ground.
The most commonly used system is the ‘Delmag – D44 or D46’ which has a hammer weight of 18t with a variable delivery fuel pump. The below table shows the specifications of others types of Delmag Hammers. The Manufacturer’s Operating Procedures must be followed when planning driving operations.


The below table shows the normal and maximum blows/ft for different Conductor Casing Pipes and different hammer sizes for installation in oil and gas wells.

Conductor Casing Pipe Installation Hydro-Hammer

Frank’s Hydro-hammer is an ‘intelligent hammer’ due to its sophisticated electronic control design. This control system is capable of regulating the energy for each impact.
The net energy applied to the conductor pipe while installation, which is measured during every blow, is monitored and can be regulated from the maximum to 5% or less. Since the measure of energy is precisely known, the force applied to the pile can be accurately computed.
One particularly unique advantage of the Hydrohammer is the control system’s ability to shut off the ram automatically if the pile starts to run ahead of the hammer in soft soils, e.g. due to:
- The hammer is not positioned correctly on the pile.
- Stroke rate becoming too high.
- Blow energy is too high.
Other advantages unique to this hydraulic hammer are:
- It can operate at any angle, even horizontally.
- It has an optional printer available to produce a report of the piling operation.
- It can be used onshore or offshore, in air or submerged under water.
Final Refusal Depth For Conductor Casing Pipe Installation For Oil & Gas Wells
The following procedure details the determination of the final refusal depth of the conductor casing pipe installation.
A. When the driving depth of the conductor pipe is not specified in the Drilling Programme, the final depth of the driving is the ‘refusal depth’.
- The refusal value generally used is 1,000-1,100 blows/metre (300-330blows/ft)
- Local experience could dictate a different refusal value. The driving depth can be predetermined by conducting soil boring analysis.
- Examine offset well data for depths and potential problems in order to determine if the CP depth is adequate.
B. The installation driving depth of the conductor casing pipe which is specified in the Drilling Programme is established with the following formula:
Hi = [df x (E+H) – 103 x H]/[1.03 – df + 0.67 x (GOVhi – 1.03)]
where:
Hi = Minimum driving depth (m) from seabed
E = Elevation (m) distance from bell nipple and sea level
H = Water depth (m)
df = Maximum mud weight (kg/l) to be used
GOVhi = integrated density of sediments (kg/dm3/10m)
If the refusal depth does not meet this value, internal washing may be required. CP internal washing might be necessary several times before reaching the planned depth.
C. It should be noted that if there is a high refusal value in very hard formations, the CP shoe could collapse.