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

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 roller reamer reduces torque, accumulates nearly 6 million revolutions in a single run

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.

Products Used

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