Geosteering is a sequential decision process under uncertainty. The goal of geosteering is
to maximize the expected value of the well, which should be defined by an objective value …

Continuous integration of real-time logging-while-drilling data into a subsurface model with
relevant geologic uncertainties enables strategic geosteering, a field-level optimization of …

Block H, located in western Hubei-eastern Chongqing, remains at a low exploration degree.
Characterized by its complex structural attributes, the area presents adverse conditions such …

Equinor has played an important role in the last decade in the testing and development of
ultradeep azimuthal resistivity (UDAR) measurements both for look-ahead and look-around …

The cost of drilling wells on the Norwegian Continental Shelf is exceptionally high, and
hydrocarbon reservoirs are often located in spatially complex rock formations. Optimized …

Quantitative workflows utilizing real-time data to constrain uncertainty have the potential to
significantly improve geosteering. Fast updates based on real-time data are particularly …

Innovative interpretation methods based on efficient measurements to map structure and
fluids around high angle and horizontal wells while drilling are critical for future success in a …

Decisions regarding problem conceptualization, search approach, and how best to
parametrize optimization methods for practical application are key to successful …

A probabilistic decision support system for geosteering coupled with automated data
assimilation techniques has been shown to outperform many humans at least in sandbox 2D …

Ultra-deep azimuthal electromagnetic (EM) logging-while-drilling (LWD) tools are frequently
used during landing operations for early detection of the reservoir top. This enables …