Mast and Substructure
The mast and substructure make up the primary structural components of a drilling rig setup. Our masts and substructures are designed and manufactured in compliance with API 4F.
Mast
1. Equipped with a casing stabbing board, resting board and racking platform to allow your operators to complete their tasks safely as part of your oil drilling operation.
2. Climb safety device and derrick escape line.
3. Up to two 0.5T air winches on the racking platform for aiding in the racking of drill collars.
4. Counterbalance system for rotary tongs.
5. Safety grip walkway and safety chains.
Type
1. Telescopic design (double section and three section)
2. K-type, open face
3. Bootstrap style (self-elevating)
| Model | Unit | | | | | | | |
| Max. static rating | kN | 1350 | 2250 | 3150 | 4500 | 5850 | 6750 | |
| Working height | m / ft | 31.5(104) | 43(141) | 45(147) | 45(147) | 46(151) | 48(157) | |
| Top open (Front × side) | m/ft | 1.7×1.7 (5.6×5.6) | 2×2 (6.6×6.6) | 2.1×2.05 (6.9×6.6) | 2.1×2.05 (6.9×6.6) | 2.3×2.5 (7.5×8.2) | 2.4×2.6 （7.9×8.5) | |
| Bottom open | m/ft | 6(20) | 8(26) | 8(26) | 9(30) | 10(33) | 10(33) | |
| Capacity of monkey board | m/ft | 2000(6560) | 4000(13120) | 5000(16400) | 7000(22960) | 8000(26246) | 9200(301840) | |
| Wind load capacity | Expected(no stand, no hook load) | m/s | 38.6(75) | 38.6(75) | 38.6(75) | 38.6(75) | 38.6(75) | 38.6(75) |
| Unexpected(full stand, no hook load) | m/s | 30.7(60) | 30.7(60) | 30.7(60) | 30.7(60) | 30.7(60) | 30.7(60) | |
| Operation, Raising & Lowering | m/s | 16.5(32) | 16.5(32) | 16.5(32) | 16.5(32) | 16.5(32) | 16.5(32) | |
Type
1. Telescopic or parallelogram (for truck/trailer-mounted rig)
2. Parallelogram, swing-up
3. Box/module lap
| Model | | | | | |||||
| Height | m/ft | 6(20) | 7.5(25) | 7.5(25) | 9(30) | 9(30) | 10.5(35) | 10.5(35) | 12(40) |
| Clear height under rotary table beam | m/ft | 4.77 (15.65) | 6.26 (20.54) | 6.26(20.54) | 7.62(25) | 7.62(25) | 8.92(29.3) | 9(29.5) | 10(33) |
| Rotary table beam load rating | kN | 2250 | 2250 | 3150 | 3150 | 4500 | 4500 | 5850 | 6750 |
| Stand load rating | kN | 1150 | 1150 | 1600 | 1600 | 2200 | 2200 | 2880 | 3240 |
| Max. static hook load | kN | 2250 | 2250 | 3150 | 3150 | 4500 | 4500 | 5850 | 6750 |
| Bottom span of mast | m/ft | 8(26.3) | 8(26.3) | 9(30) | 9(30) | 9(30) | 9(30) | 10(33) | 10(33) |
