Multilayer bed boundary detection technology improves well placement
HOUSTON — Schlumberger has commercialized the PeriScope HD multilayer bed boundary detection service. The technology accurately detects multiple formation layers, orientation of approaching beds and fluid boundary positions to enable advanced well placement services in clastic and carbonate fields.
“For complex, thinly bedded and compartmentalized reservoirs, it is critical for geoscientists to place wells in the most productive parts of the reservoir layers,” said Steve Kaufmann, president, Drilling & Measurements, Schlumberger. “The PeriScope HD technology enables customers to choose the optimal steering direction within the reservoirs to improve production.”
The PeriScope HD service uses a combination of inversion models with additional azimuthal measurements to provide precise delineation of formation bed boundaries for advanced well placement and accurate definition of multiple productive layers. This real-time multilayer detection technology leads to better understanding of how formations are deposited, which enables geoscientists to position future wells for improved production.
The PeriScope HD service has been tested in reservoirs in the Middle East, Europe, Asia and South America, as well as thinly layered reservoirs in North America. The technology proved its ability to accurately detect formation bed boundaries in both conductive and resistive drilling fluids.
In Australia, a customer was planning to geosteer a well within 3-m true vertical depth (TVD) of the top structure and also delineate overlapping dipping channel sands. The PeriScope HD service delivered bed boundary information to place the drain hole within 2-m TVD below the reservoir top throughout the entire drilled interval. In addition, the multilayer reservoir delineation provided the operator with an increased understanding of the complex reservoir.