Unlocking Reservoir Potential: Raptor™ 2.0 Cased-Hole Evaluation System Delivers Clarity, Pinpoints Residual Gas in Gravel Pack Wells

Run saturation logging to check current hydrocarbon saturation profile in sand interval to confirm presence of gas/water.
Correlate current saturation with historical data and nearby wells.

The operator needed N-vision and Sigma pulsed neutron logging to determine fluid contact and saturation in the target reservoirs.
Weatherford experts recommended the Raptor 2.0 cased-hole evaluation system, a pulsed-neutron wireline logging device that provides advanced analysis of oil, water, and gas saturation behind casing.
The Weatherford Interpretation and Evaluation Services (IES) team collaborated with field personnel and the operator to ensure the successful deployment and high-quality data retrieval with proper log QC.
Based on input from the operator, a Monte Carlo N-Particle model was used to validate the response envelope.
Saturation analysis using Vshale and Phie indicated approximately 20 to 24% gas saturation, with water line normalization at the highest NV ratio in the sand formation.
Sigma readings (~20 cu) and capture count crossover supported the presence of gas saturation.
Final results were presented to the operator for improved understanding and correlation with nearby wells.

The IES team’s interpretation helped the operator pinpoint gas/water contact and confirm current saturation levels.
The analysis revealed potential residual gas above the packer and water movement below, enabling the operator to better plan future operations and understand well conditions.

Details

Location

Myanmar

Formation

Sandstone

Hole Size and Angle

8-1/2 in., deviation up to 43°

Casing Size

Single 7-in. casing and 3-1/2-in. tubing

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