Workover Rig


Light-duty mobile workover rigs

This kind of workover rigs are designed and manufactured in accordance with API Spec Q1、4F、7k、8C and technical standards of RP500,GB3826.1、GB3836.2 GB7258,SY5202 as well as“3C” compulsory standard.
The whole unit structure is compact and adopts hydraulic + mechanical driving mode, with high comprehensive efficiency.
The workover rigs adopt II-class or self-made chassis with various to meet the user’s different requirements.
The mast is front-open type and with single-section or double-section structure, which can be raised and telescoped hydraulically or mechanically.
Safety and inspection measures are strengthened under the guidance of the design concept of “Humanism Above All” to meet the requirements of HSE


The main technical specification for light-duty (below 80T) mobile workover rigs

Model XJ35 XJ60 XJ70(XJ250) XJ80
Nominal service depth (2 7/8″OP) ft 5200 8500 10000 12000
Nominal workover depth (2 7/8″DP) ft 3300 4900 6600 8200
Max hook load (lbs) 80000 130000 150000 180000
Engine model X6130 F8L413F T-3A929 or WD615.68 MWM TBD234V6
Engine power (hp) 233 252 282 or 303 335
Transmission mode) Hydraulic +Mechanical

Heavy-duty mobile workover rigs

This kind of workover rigs are designed and manufactured in accordance with API Spec Q1、4F、7k、8C and technical standards of RP500,GB3826.1、GB3836.2 GB7258,SY5202 as well as“3C”compulsary standard.
The whole rig structure is compact, highly integrated, and requires a small space for installation.
The heavy-duty chassis are 8×6、10×8、12×8、14×8 constant- drive and self-propelled, equipped with hydraulic steering system and have a good capability of passage and cross country.
A good and reasonable assembly of CATERPILLAR engine and ALLISON transmission box can supply a high driving efficiency and increase safe performance.
Band brake or disc brake is applied for the main brake and the air disc brake/water brake or FDWS is used for auxiliary brake.
The compound box for rotary table has a function of forward-reverse speed shift gears, which can be suitable for DP’s rotary operations. The anti-torque releasing device can be used to release the deformation energy of the DP safely.
The mast is front –open type, with double- section structure, which can be telescoped, raised and extended hydraulically.
The drill floor is twin-body telescopic type or with parallelogram structure, which is convenient for installation and transportation. The dimension and height of the drill floor can be designed according to the user’s requirements.
Safety and inspection measures are strengthened under the guidance of the design concept of “Humanism Above All” to meet the requirements of HSE.


The main technical specification for heavy-duty (above 80T) mobile workover rigs

Model XJ90(XJ350) XJ110(XJ450) XJ135(XJ550) XJ160(XJ650) XJ180(XJ750) XJ225(XJ850)
Nominal service depth(2 7/8″OP)ft 13000 18000 23000 26000 ---- ----
Nominal workover depth(2 7/8 “DP)ft 10000 15000 19000 23000 26000 ----
Drilling depth(4 1/2″DP)ft 3300 5000 6600 8200 10000 13000
Max hook load (lbs) 200000 250000 300000 350000 400000 500000
Engine model CAT3406 C-9ANAAC CAT3408DITA C-15ATAAC CAT3408DITA C-15ATAAC CAT3412DITA C-16ATAAC 2×CAT3408DITA 2×-15ATAAC 2×CAT3408DITA 2×-15ATAAC
Engine power (Noxhp) 361 or 350 475 531 or 526 650 or 660 2×475 2×531 or 2×526
Model for hydraulic transmission box S5610HR S5610HR S5610HR S5610HR 2×S5610HR 2×S5610HR
Transmission mode Hydraulic + Mechanical Hydraulic + Mechanical Hydraulic + Mechanical Hydraulic + Mechanical Hydraulic + Mechanical Hydraulic + Mechanical
Mast height ft 95 105 108 115 118/125 118/125
Traveling system 4×3 5×4 5×4 5×4/6×5 5×4/6×5 6×5
Main wireline diameter (in) 1 1 1 1 1/1/2004 1/1/2004
Hook speed (ft/s) 0.66~5.74 0.66~3.94 0.66~4.59 0.66~4.27 / 0.66~4.59 0.66~4.27 / 0.66~3.94 0.66~4.27
Substructure model/ transmission way) XD40/8×6 XD50/10×8 XD50/10×8 XD60/12×8 XD70/14×8 XD70/14×8
Approaching angle/leaving angle 23°/16° 26°/17° 26°/17° 23°/18° 26°/18° 26°/18°
Min. ground clearance (in) 13 3/8 12 1/4 12 1/4 12 1/4 12 1/4 12 1/4
Max gradeability 30% 26% 26% 26% 26% 26%
Min turning radiusft 92 108 108 38 41 41
Rotary table Model ZP90 ZP135 ZP135 ZP175 ZP205 / P275 ZP205 / ZP275
Hook block Model YG90 YG110 YG135 YG160 YG180 YG225
Swivel Model SL110 SL110 SL135 SL160 SL225 SL225
Overall dimension ft 55×9×13.5 61×9×14 62×9×14 67×9×15 74×10×15 74×10×15
Weight for main unit (lbs) 92600 110000 120000 143000 168000 172000
Weight for accessories (lbs)(approximate) 33000 44000 44000 44000 66000 66000