Active Member
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[China]
Address: City window,Jinye Road,High Tech Zone, Xi'an, China
Contact name:Dan
Xi'An Tiptop Machinery Co., Ltd. |
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Oil Rig Equipment Oil Well Drilling Rig and Workover Rig API 4F Derrick, Mast
The drilling and workover derricks with different loadings is designed and fabricated according to API Spec 4F, including A type, Tower type, K type, special K type, mast type and the special type used in offshore drilling.
Features of Masts-Open Face
* Open-face masts.
* Raising mode: integral and bootstrap.
* Masts are installed at ground level and divide into sections. Sections are connected with each other by means of double pins to ensure connections integrity.
* Mast stems are of beam structure for easy of assembly/disassembly and transportation.
* Two hydraulic cylinders (left & right) are provided to be used as snubber when raising masts and as primary push-pull force when lowering masts.
* Masts’ space and height meet the need of installing top drive.
* Masts conform to API 4F.
| Model | JJ135/31.5-K | JJ225/43-K | JJ315/45-K | JJ450/45-K | JJ675/48-K | |
| Max. static load rating kn | 1350 | 2250 | 3150 | 4500 | 6750 | |
| Working height m (ft) | 31.5 (104) | 43 (141) | 45 (147) | 45 (147) | 48 (157) | |
| Top span (front x side) m (ft) | 1.7x1.7 (5.6x5.6) | 2x2 (6.6x6.6) | 2.1x2.05 (6.9x6.6) | 2.1x2.05 (6.9x6.6) | 2.4x2.6 (7.9x8.5) | |
| Bottom span m (ft) | 6 (20) | 8 (26) | 8 (26) | 9 (30) | 10 (33) | |
| Height of monkey board m (ft) | 17.5 (57.4) 16.5 (54.1) | 26.5 (87) | 26.5 (87) | 26.5 (87) | 26.5 (87) | |
| 25.5 (83.7) | 25.5 (83.7) | 25.5 (83.7) | 25.5 (83.7) | |||
| 24.5 (80.4) | 24.5 (80.4) | 24.5 (80.4) | 24.5 (80.4) | |||
| Capacity of monkey board m (ft) | 2000 (6560) | 4000 (13120) | 5000 (16400) | 7000 (22960) | 9200 (301840) | |
| Wind load capacity | Under non-working condition (no stand, no hook load) km/h (NMPH) | 172 (93) | 172 (93) | 172 (93) | 172 (93) | 172 (93) |
| Under non-working condition (full stands, no hook load) km/h (NMPH) | 130 (70) | 130 (70) | 130 (70) | 130 (70) | 130 (70) | |
| Raising & lowering mast km/h (NMPH) | 30 (16) | 30 (16) | 30 (16) | 30 (16) | 30 (16) | |
