Saturation Logging Confirms Hydrocarbons, Optimizes Perforation Planning, Improves Long-Term Reservoir Management

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Saturation Logging Confirms Hydrocarbons

Optimizes Perforation Planning, Improves Long-Term Reservoir Management

Confirm the presence of oil and water across the target interval to support informed perforation planning.
Assess the full area behind casing to uncover any remaining hydrocarbon potential.

An operator needed N-Vision and carbon/oxygen (C/O) pulsed neutron logging to identify the current fluid contact and saturation in the target reservoirs.
Weatherford experts recommended the Raptor 2.0 cased-hole evaluation system to ensure comprehensive coverage of the target reservoir, including the perforation interval.
In collaboration with field personnel and the operator, Interpretation and Evaluation Services (IES) experts ensured successful deployment, high-quality data acquisition, and log quality control (QC).
A Monte Carlo N-particle model was requested following the operator’s given input. The model validated the response envelope and ensured coherence in the saturation interpretation.
Using a 70% near/30% far detector ratio, the C/O logging revealed approximately 65% oil saturation in the target interval.

Confirmed Hydrocarbon Presence: The Raptor 2.0 system, combined with expert interpretation, accurately identified the oil/water contact.
Enhanced Perforation Planning: The saturation analysis enabled the operator to pre-select optimal perforation intervals, improving reservoir access and production strategy.
Improved Reservoir Management: The insights provided a solid foundation for long-term reservoir development and decision-making.
Extended well production life: The operator added perforation from the potential zone and converted an idle well to production.

Details

Location

Malaysia

Formation

Sandstone

Hole Size and Angle

8-1/2 in., deviation up to 68°

Casing Size

Single 5-1/2 in.

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