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Mapping the OWC with extra-deep resistivity in the Lower Burgan reservoir, Kuwait
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 3rd EAGE/SPE Geosteering Workshop, Nov 2021, Volume 2021, p.1 - 4
Abstract
The Aptian Burgan reservoir, located in the Minagish Field of Kuwait, consists of a thick sequence of amalgamated channel sands providing good lateral connectivity; however, a fault network connecting the sands to the aquifer could potentially allow a premature water breakthrough. Moreover, several producers were drilled in the area, affecting the position of the OWC, because of a significant water rise in proximity of horizontal and vertical producers. The Burgan reservoir is, therefore, a challenging environment for the placing and completion of horizontal wells, requiring the accurate knowledge of the position of the OWC for optimal wellbore placement and completion planning. Kuwait Oil Company decided, therefore, to run a slim-hole BHA including a conventional azimuthal propagation resistivity tool in combination with an extra-deep azimuthal resistivity tool and multicomponent resistivity inversion modelling for the drilling of a new horizontal drain hole. This choice allowed both to successfully map the OWC and place the wellbore at the required position within the reservoir for the entire extension of the lateral section.