SOKOL Drilling motors and tools

Column filter

Column filter

Column filter is inserted into the column to protect a mud motor from foreign objects during the drilling process.

The filter consists of filter element and casing. Before going to mud motor the fluid is delivered into the column and goes through the filter that has a slot-type filter element with 5mm slots. All hard particles sized not more than 5mm are trapped by the filter element. Filter design allows to do the filter element cleaning at the drillsite, without any risk of getting foreign objects and cuttings inside the motor.

Technical specification

Filter F-95RS F-106RS F-120RS F-172RS F-240RS
Applicability (Mud motor size), mm 95/98 106 120/127 172 240
OD, mm 98 106 120 176 229
Overall length, mm 819 825 902 1 041 1 000
Body length, mm 730 730 800 927 860
Box NC-26
2 7/8 Reg		 NC-31
3 1/2 Reg		 3 1/2 FH
NC-38		 NC-50
5 1/2 FH		 6 5/8 Reg
NC-61
6 5/8 FH
Pin NC-26
2 7/8 Reg		 NC-31
3 1/2 Reg		 3 1/2 FH
NC-38		 NC-50
5 1/2 FH		 6 5/8 Reg
NC-61
6 5/8 FH
Mesh size, mm 3.1; 5 3.1; 5 5 5 5
Max flow rate through the filter, l/s 10 12 20 38 75
Sand content in mud, %, max 1 1 1 1 1
Weight, kg 32 38 49 87 179
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