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Land-based drilling rigs
Digitally-controled variable-frequency AC drive drilling rig ZJ90DBS

A-frame structure, K type mast, swing up substructure

Technical parameters

1. nominal drill depth: (1)114mm DP :6000-9000m,(2)127mm DP: 5000-8000m;

2. max. load of hook: 7600kN;

3. max. weight of drill string: 3200kN;

4. line system: 7*8 along the line;

5. diameter of drilling wireline: φ45mm;

6. rated input power of DW: 3200kW;

7. gears of DW: two gears, stepless speed regulating (2+2R);

8. diameter of RT opening: ?1257.3mm(49 1/2");

9. rated power/number of drilling pump: 1193kW(1600hp)/3;

10. effective height of mast: 48m;

11. height of drill floor: 12m;

12. area of drill floor (L×W): 13.78m×11m;

13. clear height of RT beam: 10m;

14. capacity of air tank: 2*2m3 +2m3(buffer tank on drill floor);

15. power/number of main generator set: 1020kW/5;

16. power/number of auxiliary generator set: 292kW/1;

17. total capacity of mud tank: 508m3;

18. diameter/rated pressure of drilling fluid manifold: 4"/35Mpa.

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