Offshore staff
HOUSTON – Halliburton has released the EarthStar ultra-deep resistivity service.
This is a logging-while-drilling technology that helps operators map reservoir and fluid boundaries more than 200 ft (61 m) from the wellbore.
The service is said to deliver a comprehensive reservoir view, so operators can eliminate pilot holes and side tracks, make informed geosteering decisions in real time, and better plan future field development.
EarthStar uses azimuthal electromagnetic measurements to map the geological structure around a wellbore, enhancing the operator’s knowledge of the reservoir for improvement of recovery potential. The measurements are integrated with Halliburton RoxC geosteering software, which uses computing methods to provide real-time visualizations of the reservoir structure and fluid boundaries.
Operators can deploy the service in many applications including geomapping to estimate the volume of hydrocarbons in a reservoir, identifying bypassed pay and planning for future field development. In geosteering applications, EarthStar helps position wells in the reservoir’s “sweet spot” for maximizing recovery. Additionally, through geostopping, the service provides early indications of potential drilling hazards.
An operator in the North Sea recently deployed the new service in a mature carbonate field to identify remaining oil within a partially water-flooded reservoir. The service mapped the location of the oil and helped guide geosteering decisions to maximize well contact with the oil-bearing zones.
After successfully drilling a long interval, the well entered a zone of injected water that continued for more than 400 ft (122 m). The operator considered halting drilling, but EarthStar data indicated a second oil deposit approximately 50 ft (15 m) below the well. This increased the productive length of the zone by 50%, increasing overall production potential.
06/05/2018
