Topics > Oil & Gas Drilling

DOG Drilling on Gauge Sub
17/10/2016

drilling on gauge sub has been specifically designed to deliver at-the-bit reaming. Its short body design and durable cutting structure enables placement between the bit and motor for directional applications. This results in a smoother build section and reduction in hole drag allowing for better weight transfer to the drill bit. The cutting structure is comprised of synthetic diamond-enhanced inserts, which gives the DOG sub its continuous reaming capability. Each insert is brazed into the body, eliminating moving parts found in conventional reamers.
Hole size, in Connection dize Bore diameter, Shoulder to Rib length, Weight,
  and type in shoulder length, in in lbm
27⁄8 Reg 57⁄8 39
57⁄8 3½ Reg 73⁄8 6 ⁄16 51
6 3½ Reg 73⁄8 63⁄8 54
61⁄8 3½ Reg 67⁄16 57
3½ Reg 67⁄16 61
3½ Reg 77⁄8 65⁄8 66
3½ Reg 81⁄8 65⁄8 71
73⁄8 4½ Reg 65⁄8 64
4½ Reg 73⁄8 63⁄8 79
77⁄8 4½ Reg 8 65⁄8 88
4½ Reg 83⁄8 67⁄8 95
83⁄8 4½ Reg 83⁄8 71⁄8 102
87⁄16 4½ Reg 83⁄8 7 107
4½ Reg 83⁄8 7 111
4½ Reg 89⁄13 115
9 4½ Reg 67⁄8 110
65⁄8 Reg 3 85⁄8 77⁄8 112
97⁄8 65⁄8 Reg 3 91⁄8 159
105⁄8 65⁄8 Reg 3 97⁄8 81⁄8 181
11 65⁄8 Reg 3 103⁄8 83⁄8 187
115⁄8 65⁄8 Reg 3 10½ 87⁄8 174
121⁄8 65⁄8 Reg 3 11½ 7 214
12¼ 65⁄8 Reg 3 113⁄8 9 206
14¾ 75⁄8 Reg 33⁄8 217⁄8 563
15½ 75⁄8 Reg 33⁄8 22¼ 523
16 75⁄8 Reg 33⁄8 225⁄8 101⁄8 578
17½ 75⁄8 Reg 3 241⁄8 105⁄8 706
20 75⁄8 Reg 3 26¾ 83⁄5 980
22 75⁄8 Reg 3 287⁄8 9 1122

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