EarthStar® ultra-deep resistivity service geomaps multiple oil saturation layers and fluid contacts, and helps execute directional planDownload PDF
Provide greater reservoir understanding for drilling operations
Carbonate Pinnacle Reservoir, Southeast Asia
A major oil and gas operator in southeast Asia drilled extended-reach smart wells for oil recovery in a narrow 10-kilometer x 2-kilometer (6.2-mile x 1.2-mile) carbonate pinnacle reservoir. These thin oil rim development wells were challenging because of high uncertainty in reservoir structural depth and production performance, with no history or comparable analogues as reference. Additionally, the horizontal well placement was targeted at the middle of the oil zone, with a specific standoff from the gas-oil contact, which had high true vertical depth (TVD) uncertainty.
The key performance indicators (KPIs) for these wells included:
The Halliburton Sperry Drilling team recommended the EarthStar® ultra-deep resistivity service, which features a high signal-to-noise ratio arising from state-of-the-art engineering. This technology is proven to detect and map reservoir structure and fluid boundaries up to 225 feet (68 meters) from the wellbore. For this particular operation, the EarthStar service resolved multiple complex fluid boundaries, delineating the gas-oil boundary and also resolving two distinct low-resistivity signatures – thus defining the oil-water contact. Additionally, a detailed pre-well model, using multiple offset wells and various possible geologic structural models, further assured the operator that the EarthStar service would be able to resolve the targets clearly.
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