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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)


Specification
Model Unit JJ135/31 . 5 JJ225/43-K JJ315/45-K JJ450/45-K JJ585/46-K JJ675/48-K
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

Specification
Model   DZ225/6 DZ225/7.5 DZ315/7.5 DZ315/9 DZ450/9 DZ450/10.5 DZ585/10.5 DZ675/12
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)
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