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BHA with Sealed-Bearing Roller Reamer Drills 1,394 m in 181 h, at Average ROP of 16 m/h Through Interbedded, Abrasive Formation

BHA with Sealed-Bearing Roller Reamer Drills 1,394 m in 181 h, at Average ROP of 16 m/h Through Interbedded, Abrasive Formation

Published: 07/14/2014

Concrete blue texture
A total of 5,995,000 revolutions were accumulated while drilling 1,394 m in 181 h. The roller reamer was in gauge once tripped out of the hole while the cutters and cutter bearings were still in good condition.

A total of 5,995,000 revolutions were accumulated while drilling 1,394 m in 181 h. The roller reamer was in gauge once tripped out of the hole while the cutters and cutter bearings were still in good condition.

Location
Kazakhstan, Asia
Details

Komsomolskoe Field
Kazakhstan

Hole size
8.5 in

Depth in
768 m

Depth out
2,162 m

Drilling time
181 h

Formation
Limestone, claystone, sandstone

Weight on bit
tons

Rotary speed
100-120 rpm

Average ROP
16 n/h in limestone
22 n/h in sandstone
8-16 m/h in claystone

Fluid type
Water-base mud

Total cutter revolutions
5,995,000

Background
An operator needed to improve ROP and reduce stick/slip while drilling through abrasive limestone and sandstone formations with a claystone section while ensuring a full gauge hole is drilled.
Products Used
OnGauge
Torque-reduction sealed-bearing roller reamer

Minimize stick/slip and downhole vibration using a reamer focused on torque reduction.