* This kind of drilling rigs are designed and manufactured in accordance with API Spec Q1、4F、7k、8C and RP500，GB3826.1、GB3836.2 GB7258，SY6584 standards as well as“3C”compulsory standard.
* These drilling rigs have following
advantages: reasonable design structures and high integration , a small working space and a reliable transmission.
* The heavy-duty trailer is equipped with some desert tires and large-span axles to improve the mobility
and the cross-country performance.
* A high transmission efficiency and performance reliability can be maintained by a smart assembly and a utilization of two CAT 3408 diesels and ALLISON hydraulic transmission box.
* The drawworks is double- drum type, with which the hydraulic disc brake is equipped as main brake and air water-cooling disc brake (Model EATON WCB324) is equipped as auxiliary brake.
* The derrick which is front
-open type and has two –section structure with an inclination angle or erective sections can be lifted up or fallen down and telescoped.
* The substructure has a parallelogram integral structure for easy transportation
and installation, which can be risen by 6 setbacks spirally.
* This kind of drilling rigs with desert adaptability design also have good anti-dust and high/low- temperature-proof performances.
* Safety and inspection
measures are strengthened under the guidance of the design concept of “Humanism Above All” to meet the requirements of HSE.
Main technical specification for trailer-mounted drilling rigs
| Model | ZJ20/1580CT | ZJ30/1700CT | ZJ30/1700DBT | ZJ40/2500CT | ZJ40/2500DBT |
|---|---|---|---|---|---|
| Drilling depth (ft) | 6600(41/2″DP) | 10000(41/2″DP) | 12000(31/2″DP) | 13000(41/2″DP) | 13000(41/2″DP) |
| 5900(5″DP) | 6600(5″DP) | 10000(41/2″DP) | 10000(5″DP | 10000(5″DP) | |
| Max hook load (lbs) | 350000 | 400000 | 400000 | 500000 | 500000 |
| Hook speed (ft/s) | 0.67~4.92 | ||||
| Mast height (ft) | 118/125 | ||||
| Derrick type | Mast type or erective sections | ||||
| Height of drill floor (ft) | 14.76 | 19.69 | 18.06 | 19.69 | 19.69~21.98 |
| Engine model | CAT3412 DITA Or C-16 ATAAC | 2×CAT 3408C DITA or 2×C-15 ATAAC | 3508B+SR4B diesel generator set | CAT 3412 DITA Or C-16 ATAAC | 3508B+SR4B diesel generator set |
| Engine power (NO.×hp) | 650 or 660 | 2×475 | 2×1341+805 | 2×650 or 2×660 | 2×1676+805 |
| Transmission mode | Hydraulic+ Mechanical | Hydraulic+ Mechanical | VFD | Hydraulic+ Mechanical | VFD |
| Model of the transmission box | S6610HR | 2×S5610HR | TZJ30 | 2×S6610HR | TZJ40 |
| Traveling system | 4×5R | 5x6 | 4x5 | 5x6 | 5x6 |
| Model of the drawworks | JC20CT | JC30CT | JC30DBT | JC40CT | JC40DBT |
| Main brake | Disc | Disc | Disc | Disc | Disc |
| Auxiliary brake | WCB224 | WCB324 | DWS40 | WCB236 | DWS40 |
| Main wireline diameter (in) | 1 1/8 | 1 1/4 | |||
| Model of the hook block | YG160 | YG180 | YG180 | YG225 | YG225 |
| Swivel model | SL160 | XSL225 | XSL225 | XSL225 | XSL225 |
| Model of rotary table | ZP175 | ZP275 | ZP205 | ZP275 | ZP275 |
| Power for mud pump(hp/set) | 791 | 791/2 | 1000/2 | 1287/2 | 1287/2 |
| Working pressure of the hydraulic system (psi) | 2002 | ||||
| Working pressure of the air system (psi) | 143 | ||||