KLA-HIB Inhibitor Reduces Mud Volumes, Minimizes Dilution in Sensitive West Siberian Shale | SLB
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KLA-HIB Inhibitor Reduces Mud Volumes, Minimizes Dilution in Sensitive West Siberian Shale

Published: 11/07/2015

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Drilling the sidetrack and landing the liner required 27 days, including 10 days to drill the pilot hole. The entire operation was completed with no lost time caused by drilling- fluid-associated issues. The well section was drilled to TD with no mud losses, stuck pipe, or wellbore stability issues.

Chart showing KLA-HIB Inhibitor Reduces Mud Volumes Through Minimized Dilution
Compared with the conventional drilling fluid that was previously used in the area, the inhibitive WBM using the KLA-HIB inhibitor drilled a longer average interval (left graph) while maintaining a lower MBT content (right graph), demonstrating better tolerance to solids contamination. This decreased the dilution requirement for drilling fluid maintenance and, consequently, reduced the cost of drilling waste disposal.
Location
Russia, Asia, Onshore
Details

Kogalym, Siberia

Interval drilled
2,380–3,214 m
[7,808–10,544 ft]

Mud density
1,150 kg/m3 [9.60 lbm/galUS]

Mud type
Water-base mud (WBM)

Liner size
102 mm [4 in]

Background
An operator in West Siberia has historically drilled sidetracks using a mud system unable to prevent solids contamination, leading to high dilution volumes. When the cost of waste disposal became uneconomical, the operator requested a drilling fluid with a cost-effective shale inhibitor that could effectively manage dilution and reduce the drilling fluid volume required to successfully drill the section.
Products Used
KLA-HIB
Amine-based shale inhibitor

Inhibit reactive shales by preventing water uptake.
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