On-line Drilling Cuttings is generated
from the whole drilling process. The cuttings will be carried out by drilling
fluids, and then separated by solids control / waste management systems. The
first stage separating equipment is shale shaker. After shaker separation, the fine cuttings
will drop down to under tank with drilling fluids, and the coarse cuttings will
be separated and treated by vertical cutting dryer.
The main function of vertical dryer is
to recover the useful oil based mud, reduce the oil content on cuttings (OOC)
and reduce the total volume of cuttings which will be finally treated by
Thermal Desorption Unit. The recovered oil based mud will be returned to active
mud system. Some conditions, the operator will adopt High G dryer or high G shaker
to replace the Vertical dryer to achieve same functions. Even, the performance
of High G dryer is not as good as Vertical Cutting Dryer, the oil on cuttings will be
around 10% after high G dryer, but all choices is depends on the owner’s
requirements.
Technical
Parameters of Vertical Dryer
|
Model |
KSCD-930 |
KSCD-930VFD |
|
Max. Treating capacity
(ton/h) |
30-50 |
30-50 |
|
Drying efficiency |
OOC≤ 5% |
OOC≤ 5% |
|
Screen Diameter(mm) |
930 |
930 |
|
Screen opening size(mm) |
0.25/0.35/0.5 |
0.25/0.35/0.5 |
|
Cone angle |
30° |
30° |
|
Screen rotation speed(rpm) |
900 |
0~900 VFD |
|
Separation G force (max) |
420G |
420G |
|
Main Motor(kw) |
55 |
55 |
|
Oil Pump Motor(kw) |
0.55 |
0.55 |
|
Flush pump(kw) |
3~4 |
3~4 |
|
Oil Tank Capacity (L) |
48 |
48 |
|
Air Knife Pressure(Mpa) |
0.69 |
0.69 |
|
Air Knife Flow (m3/min) |
1.8 |
1.8 |
|
Weight (kg) |
4600 |
4600 |
|
Dimension(mm) |
2650×1800×1650 |
2650×1800×1650 |
Technical Features of Vertical Dryer
420G High G force under 900 rpm regular operation speed
750G High G force under 1200 rpm higher operation speed for option
Vertical Cutting Dryer can be started with fixed speed control or VFD control
Main electrical components sourced from international brand: SIEMENS, Schneider or ABB
The Ex-proof standard normally comply with China Standard EXDIIBT4, IEC/ATEX for option
The main bearings are Spherical Roller Bearings, source from FAG Brand
The Flights on the rotor is hard facing to HRC 65, with longer lifetime
The Flights and the rotor assembly are individually balanced for easy replacement
The screen basket material is Stainless Steel 316L, better performance in ani-corrosion
The screen basket is processed in high precision and dynamic balance to ensure better balance and easy replacement
Equipped with high pressure air cutter to clean the high viscosity mud sticking on the screen basket
Equipped with water jetting system to work together with air cutter, to avoid screen block
Individual oil lubrication system with low pressure automatic alarm.
Dryer motor and oil system motor is interlocked, the dryer can be started only after starting the oil pump