Inventors:
Dzevat Omeragic - Lexington MA, US
Tarek M. Habashy - Burlington MA, US
Valery Polyakov - Brookline MA, US
Raymond Kocian - Osprey FL, US
Yong-Hua Chen - Belmont MA, US
Sofia Davydycheva - Sugar Land TX, US
Raphael Altman - College Station TX, US
Carlos Maeso - Kuala Lumpur, MY
Douglas Hupp - Anchorage AK, US
Assignee:
Schlumberger Technology Corporation - Sugar Land TX
International Classification:
G06G 7/48
Abstract:
LWD measurements to be used for proactive well placement while drilling a high angle or horizontal wellbore in a reservoir are defined. An initial reservoir model is provided and a section is extracted for a planned wellbore trajectory. A secondary model is generated for the planned trajectory. An area of interest is identified where statistical uncertainty is high. Possible causes of the statistical uncertainty are identified that are not present in the initial reservoir model. A set of parameters are defined based on the possible causes of statistical uncertainty. The area of interest is logged with LWD tool. Sensitivities of the LWD tool response to a subset of parameters are evaluated by performing tertiary model for a range of the subset of parameters. The most sensitive parameters from the subset of parameters and corresponding measurements are identified. LWD measurements are defined based on the most sensitive parameters.
