Greatwall Drilling Company Saves 28 Drilling Days and USD 812,000 in West Kazakhstan | SLB
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Greatwall Drilling Company Saves 28 Drilling Days and USD 812,000 in West Kazakhstan

Published: 04/08/2016

Concrete blue texture

While drilling its first hole in the North Karpovsky field, which is characterized by cherty limestone, the Greatwall Drilling Company used 10 bits to reach TD. The drilling contractor wanted to sidetrack off of the original hole, but it needed to improve ROP, increase footage per bit run, and mitigate downhole vibrations.

Using the StingBlade bit, Greatwall Drilling Company drilled the 6-in sidetrack in one run, eliminating the need for additional bit trips. Despite operating within constrained drilling parameters, the StingBlade bit increased average on-bottom ROP by 94%—from 0.53 m/h in the main borehole to 1.03 m/h in the sidetrack—which saved the operator 28 drilling days and reduced operational costs by USD 812,000.
Using the StingBlade bit, Greatwall Drilling Company drilled the 6-in sidetrack in one run, eliminating the need for additional bit trips. Despite operating within constrained drilling parameters, the StingBlade bit increased average on-bottom ROP by 94%—from 0.53 m/h in the main borehole to 1.03 m/h in the sidetrack—which saved the operator 28 drilling days and reduced operational costs by USD 812,000.
Location
Kazakhstan, Asia
Details

North Karpovsky Field

Application
Open sidetrack

Hole size
6 in

Formation type
Cherty limestone with claystone and pyrite inclusions

Drilling parameters
WOB: 5-8 t
rpm: 70
L/min: 480

Background
While drilling its first hole in the North Karpovsky field, which is characterized by cherty limestone, the Greatwall Drilling Company used 10 bits to reach TD. The drilling contractor wanted to sidetrack off of the original hole, but it needed to improve ROP, increase footage per bit run, and mitigate downhole vibrations.
Products Used
StingBlade
Conical diamond element bit

Significantly improve footage and ROP in hard-to-drill formations.
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