Description
Features:
1. The drawworks is one-piece single shaft structure, compact,
light-weighted, higher transmission efficiency, less maintenance
and hook hoisting speed is 0?1.3m/s stepless speed regulation.
2. Drawworks main brake is hydraulic disc brake. Assistant
brake is dynamic brake. Brake unit automatically detects
electric voltage on DC side and when the reading exceeds preset
value, extra dynamics is consumed on brake resistance and tripping
in speed (incl. suspension) is controlled to your will.
3. Drawworks is equipped with motor auto-bit-feeding device which
adopts vector control technique enabled with speed sensor and
realizes constant WOB auto-bit-feeding and zero speed suspension
function. WOB is smooth and even and bit-feeding is sensitive
and accurate and mechanical penetration is increased. As
emergency response to main system failure, maximum drill string
weight can be hoisted.
4. Traveling block position automatic control system prevents
“collide up and impact down” accidents. Position control is
achieved by real time detection of traveling block position and PLC
calculation and analysis. When traveling block reaches
alarming position, “soft-stop” control procedure of
“alarming-slowdown-stop” is trigger automatically. Accurate
real time position indication of traveling block makes driller’s
operation easy.
5. Field-bus control system forms a communication network founded
on PROFIBUS-DP. The network enables data exchange and control
of driller control cabin, auto-bit-feeding system, unitized
instrumentation, traveling block position control system and VF
speed regulation cabinet. Machine-human interface (touch
screen) is used for displays of working state and parameters and
realization of control function.
6. Intelligent driller control cabin is fully-equipped with real
time display of operating parameter, electrical system monitoring
and display and failure display and alarm. Driller is
changing from skillful worker to knowledge technician.
Driller’s duty focus on acquisition of data and optimize drilling
parameter in response to well condition and engineering instruction
to realize safe, efficient and cost-effective drilling
operation.
7. The rig satisfies HSE regulations.
8. The rig performance and technical parameters comply with
SY/T***9—***9 standard. Main parts conform to API spec and
marked with API monogram.
Main Parameters:
| Rig model |
ZJ*0/***0DB
|
|
Nominal drilling depth (**4mm drill pipe) m
|
********0
|
|
Max. hook load kN
|
***0
|
|
Max. drill line no.
|
*0
|
|
Wireline diameter mm(in)
|
*2 (*1/4)
|
|
Sheave OD mm(in)
|
***0 (*4)
|
|
Swivel center pipe bore diameter mm(in)
|
*5 (3)
|
|
Drawworks rated power kW(hp)
|
**0 (***0)
|
|
Drawworks gear
|
Stepless speed regulation
|
|
Rotary table opening diameter mm(in)
|
**8.5 (**1/2)
|
|
Rotary table gear
|
Stepless speed regulation
|
|
Power/mud pump set kW(hp)
|
**0 (***0)
|
|
Mast effective height m(ft)
|
*3 (**2)
|
|
Drill floor height m(ft)
|
7.5 (*5)
|
|
Drill floor clearance m(ft)
|
6.*6 (*0.5)
|
|
Note: DB – AC VF drive rig
|
