Offshore Workover Rigs
The offshore workover rig is specially designed and manufactured for offshore production platform for maintenance or overhaul of oil/gas/water wells and multiwell cluster. It can move on the longitudinal and transverse guide rails, either in rightward or leftward, forward or backward, (X and Y directions) each time of movement can reach 400 mm to accurately align the wellhead to be repaired. Also, it can quicken the sidetracking operation and drill the new well.
Specifications for Workover Rig Masts
| Model |
OXJ90 |
OXJ112 |
OXJ135 |
OXJ158 |
OXJ180 |
OXJ225 |
| Structural way |
Skid-mounted |
Workover depth m
(31/2" DP) |
8200 |
11500 |
15000 |
18000 |
21000 |
---- |
Drilling depth m
(5" DP) |
4900 |
5900 |
6600 |
8000 |
9100 |
10000 |
| Max hook load (lbs) |
200000 |
250000 |
300000 |
350000 |
400000 |
500000 |
| Engine Model |
DDC6V-92TA
Or CAT 3406C DITA |
DDC8V-92TA
CAT 3408B DITA |
DDC12V-92T
Or CAT 3412B DITA |
DDC12V-92T
Or CAT 3412C DITA |
2 ×DDC6V-92TA
or 2×CAT3406C DITA |
2×DDC8V-92TA
or2 × CAT 3408B DITA |
| Engine power (hp) |
361 |
480
or 475 |
577
or 575 |
767
or 650 |
2 × 361 |
2 ×480
or2 × 475 |
| Model of the hydraulic transmission box |
CLT754 |
S5600
(CLT5961) |
S5600
(CLT5961)
|
S5600
(CLT6061) |
2 × S5600
(2 ×CLT5961) |
2 × S5600
(2 ×CLT5961) |
| Transmission mode |
Hydraulic +Mechanical or Electrical |
| Derrick height (ft) |
95 |
95 |
95/102/108 |
102 |
108 |
102/108 |
| Traveling system |
4×3 |
5×4 |
5×4 |
5×4/6×5 |
5×4/6×5 |
5×4/6×5 |
| Main wireline diameter (in) |
1 |
1 |
1 |
1 1/8 |
1 1/4 |
1 1/4 |
| Rotary table Model |
ZP90 |
ZP135 |
ZP175 |
ZP175 |
ZP205/ ZP275 |
ZP205/ ZP275 |
| Hook block Model |
YG90 |
YG110 |
YG135 |
YG160 |
YG180/ YG225 |
YG225 |
| Swivel Model |
SL110 |
SL110 |
SL135 |
SL160 |
SL225 |
SL225 |
| Power for mud pump (hp) |
500 |
500 |
500 |
800 |
800/1000 |
1000/1300 |
| Substructure height (ft) |
19 |
19 |
19.7 |
19.7 |
19.7 |
19.7 |
| Working Environment |
Limit wind speed (knot) |
107 (without setback)
93 (with full setback) |
| Earthquake magnitude |
8 |
| Temperature (°F) |
-4~+104 |
| Relative Humidity |
48%~88% |
OXJ180 Workover Rigs |
OXJ225 Workover Rigs |
|
