Flush Mounted Slips FMS
Flush Mounted Slips FMS
USA Origin by National Oil Varco (NOV)
The FMS275/375 is a hydraulic operated power slip which is equipped with replaceable slips and insert carriers to handle casing. The power down force generated allows the FMS to take the torque reaction of the tong when the string weight is not sufficient to resist rotating and eliminates the need for a manual casing tong. The powered down slips allow the first casing joints to be run in with the FMS.
The FMS is mounted flush with the rig floor, allowing the casing connection height to be lowered 1 meter (3 feet), thus eliminating the need for scaffolding. The rig crew also has more room to work by removing the spider body from the top of the rig floor.
The FMS can be used in combination with the rotary support table. The slips will set or raise when a command is given by the driller. Setting and raising slips of the FMS is remote controlled. By detecting the signal-line pressure from the FMS it is determined that the FMS slips are set.
The FMS is available in 2 sizes; the FMS275 ( 2.3/8" - 7.5/8", 250sTon) and the FMS375 (4.1/2" - 14", 500sTon). The NOV FMS275 utilizes the full range of slip assemblies and bottom guides, 23/8" to 75/8", as used in the existing BJ type 250sTon elevator/spider. In addition, special designated slips will give the FMS275 its maximum 250sTon capacity.
The FMS375 utilizes the full range of slip assemblies and guides, 41/2" to 14", as used in the 500sTon elevator/spider. The FMS375 is provided with standard rotary locks in case the rotary torque needs to be transmitted to the casing string.
TECHNICAL SPECIFICATIONS FMS275 & FMS375
|
Subject |
FMS-275 |
FMS-375 |
|
|
Weight without slips and guides [lbs/kg] |
2,755 / 1,250 |
|
|
|
Weight FMS with slips and guides [lbs/kg] |
2,755 / 1,250 |
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|
|
Pipe size [inches] |
2,755 / 1,250 |
|
|
|
Load Rating [sTon/Tonne] |
350 / 317 (depending on slip type) |
500 / 454 |
|
|
Rotary size [inches] |
27.5" (or reduced from 37.5") |
37.5” |
|
|
Minimum inlet pressure [psi/kPa] |
|
1,500 / 10,342 |
|
|
Normal Operating pressure [psi/kPa] |
|
2,000 / 13,789 |
|
|
Maximum Operating pressure [psi/kPa] |
|
2,500 / 17,236 |
|
|
For a cycle time of appr. 4 to 5 seconds, the following flow and pressure is required |
|
5 gpm@2,000 psi to 12 gpm@1,000 psi 19 lpm@13,789 kPa to 45 lpm@6,895 kPa 500-750 / 3,447-5,171 |
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|
Subject |
|
1,000 / 6,895 |
|
|
Weight without slips and guides [lbs/kg] |
|
2,500 / 13,789 |
|
|
Weight FMS with slips and guides [lbs/kg] |
|
200 / 1,378 |
|
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Pipe size [inches] |
|
|
|
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Load Rating [sTon/Tonne] |
|
200 / 1,378 |
|
|
Back up torque for FMS275 only |
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|
|
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Hydraulic Working Pressure (psi) |
Power Down Force (sTon) |
Applied Maximum Back-up |
Torque [ft.lbs / Nm] * |
|
3,000 |
17.24 |
17,240 |
23,373 |
|
2,500 |
14.37 |
14,370 |
19,483 |
|
2,000 |
12.49 |
11,490 |
15,578 |
|
1,500 |
8.62 |
8,620 |
11,687 |
|
* On 7.5/8" OD pipe |
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|
|
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Back up torque for FMS375 only |
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|
|
|
Hydraulic Working Pressure (psi) |
Power Down Force (sTon) |
Applied Maximum Back-up |
Torque [ft-lbs / Nm] |
|
2,500 |
47 |
40,000 |
54,232 |
|
2,000 |
41 |
35,200 |
47,724 |
|
2,000 |
38 |
32,000 |
43,386 |
|
1,800 |
34 |
28,800 |
39,047 |
|
1,600 |
30 |
25,600 |
34,708 |
|
1,400 |
26 |
22,400 |
|