De-Risking the Reservoir for a Commercial Development of the Grosmont Bitumen Carbonates in Alberta
Author: Daniel Yang, Chief – Reservoir Engineering – Laricina Energy Ltd.
Source: This paper was prepared for presentation at the SPE Heavy Oil Conference held in Calgary, Alberta, Canada, June 10-12, 2014.
Improving on initial experience in the Saleski pilot with wells drilled between 2008 and 2010, a second generation well (drilled 2012) delivers economically attractive bitumen rates at efficient steam-oil ratios. This performance de-risks the reservoir and forms a solid basis for development planning. A larger scale follow-up project will help optimize well spacing, multiple-well operations, management of well interface, artificial lift systems, etc.
Despite comparable conditions of cyclic operation, two wells located in the same reservoir perform differently. This is related to differences in drilling into the Grosmont Carbonate formation, the performance of the second generation well in Saleski is significantly improved. This paper presents the performance indications for the pilot well and discusses the key learning steps that led to the improvement.