Efficiently Integrating Seismic Data Into the Geosteering Process to Accurately Position Wells for Increased Production

Abstract

In unconventional reserves, drilling highly deviated or horizontal wells operators need to make adjustments to the target locations in order to stay in zone of interest. Geosteering tools provide techniques to determine where the well is located within a specific formation and predict the geology ahead of the bit to aid in directing the well's position. However, these tools rely heavily on well information to feed their decisions. Integrating geophysical data into the geosteering process can provide additional insight to the reservoir structure and stratigraphy allowing for more accurate positioning of the well to improve operational efficiency and profitability. This work will examine how new techniques can provide highly efficient workflows for incorporating seismic volumes, horizons and faults into the geosteering process. As a well is drilled, additional well data is acquired and well correlations are made. The ability to accurately update geophysical data from time to depth and build a consistent three dimensional interpretation of the subsurface in real time provides new insights on where to steer to potential targets and avoid hazards in front of the bit. We will review examples of how this methodology enables new workflows for the geosteerers and asset team members to better collaborate and efficiently leverage the value of seismic data to target the optimal portion of the reservoir. Integrating all of the available subsurface data into a consistent model will greatly improve the chance for a well's success resulting in reduced drilling costs and increased production.

AAPG Datapages/Search and Discovery Article #90291 ©2017 AAPG Annual Convention and Exhibition, Houston, Texas, April 2-5, 2017