WLNTH EXPLOSION PROOF non-self-propelled well-logging hoist with an electro-hydraulic drive of the winch as well as an emergency drive of the winch from the diesel engine, is in a standard 20 foot maritime container for work on an offshore structure.
The hoist provides lowering and rising on the cable of the logging sondes, well tools, perforating and blasting apparatus at geophysical well logging with a depth of up to 7,000 m.
Explosion protection class– Zone II (IIGc IIAT3 – 40 ºС≤ Tamb≤ + 40 ºС).
NPWH has the Certificate of Class Approval of the MARITIME REGISTER OF SHIPPING.
The hoist contains:
- a container with an examination certificate of Maritime Register of Shipping;
- a winch (litho-density log – LDL) with an electro-hydraulic drive of the winch and an emergency drive of the winch from the diesel engine;
- operating and monitoring system of lowering and raising operations;
- a measuring device of the depth, speed and tension of the geophysical cable.
The body of the hoist consists of three units:
- laboratory (operator unit)
- the unit for LDL, technological complex and supporting facilities;
- the unit of LDL drive.
The laboratory unit is equipped with a control panel, tracing and control of lowering and raising operations.
The hoist is designed to be used under the conditions of mild climate in accordance with State All-Union Standard 15150 environment class 1, at an ambient temperature from minus 40 ºC to plus 40ºC and relative humidity up to 90% at plus 30ºC.
The hoist is designed for operation in the climatic area I2 according to State All-Union Standard 16350.
This package has also a standby engine, which equipped with explosion protection technology.
|
Basic parameters |
Unit measure |
Value |
|
The maximum depth of research |
m |
7,000 |
|
Cable travel speed range on the mean diameter of winding back onto the reel of the hoist |
m/h |
20…10,000 |
|
The maximum pull of the cable on the first two rows of winding back onto the reel of the hoist, not more than |
kN |
60 |
|
The pulling force on the first two rows of winding back onto the reel of the hoist at the maximum speed of the movement, not more than |
kN |
14 |
|
Capacity at the hoisting drum, not more than |
kW |
53.3 |
|
The maximum torque of the hoisting drum |
kN •m |
21.0 |
|
Auxiliary power supply – voltage : operated from direct current from external reference source of electrical power -current frequency; -power input, not more than |
V V Hz kW |
12(24) 220/380/4 80/600 50 (50…60) 5 |
|
Voltage of repair illumination |
V |
12 (24) |
|
Category of power supply reliability |
– |
I |
|
Cable length of earth ground, not less than |
m |
50 |
|
Diameter of logging cable or wire line, not more than |
mm |
36 |
|
Dimension specification of the hoist, not more than: -length -width -height |
mm mm mm |
8,000 2,550 3,000 |
|
Height of door opening, not less than |
m |
1.9 |
|
Indoor height, not less than |
m |
2.5 |
|
Working pass width, not less than |
m |
0.5 |
|
Fully loaded weight, not more than |
kg |
12 000 |
|
Body operation category |
– |
temporary, semiconstant |
|
Body classification according to State All-Union Standard 54257 |
– |
II level of concern |
|
Temperature in indoors |
ºC |
not lower +5, not more than 35 |
|
Temperature in indoors while performing the works |
ºC |
+20 ±5 |
|
Provided difference between the specified temperature of internal air and interior wall temperature of the protection cover in the presence of heating |
ºC |
according to State All-Union Standard 22853 |
|
Floor loading of the body, not more than |
kgf/m² |
200 |
