3. The CARC Project on Cumulative Effects of the Mackenzie Gas Project
CARC has been interested in the Mackenzie Gas Project and its potential cumulative effects for some time. CARC contracted with a technical expert to begin to develop models and maps to predict the cumulative effects of the Project. Rather than attempt to develop new models and maps, existing data supplied by the Proponents was used in the analysis.
A series of “snapshot” maps were developed based on a detailed natural gas supply forecast prepared by Gilbert, Laustsen, Jung Associates Ltd., Petroleum Consultants, entitled Mackenzie Gas Project – Gas Resource Supply Study (http://www.ngps.nt.ca/applicationsubmission/GLJ.html). The GLJ Study identifies all the future wells required to supply the MGP until 2049 but does not provide any maps. It was decided to simply map out the induced development identified by the GLJ Study.
The GLJ Study identifies three general areas that could supply the Mackenzie Gas Project:
Mackenzie Delta & Beaufort Sea (NWT)
Eagle Plains (Yukon Territory)
Colville Hills (NWT)
However, it states that the Eagles Plains are approximately 300 km from the planned pipeline route and would not be profitable to tie-in at this time. The GLJ Study only considers the Mackenzie Delta/Beaufort Sea and the Colville Hills areas would be part of the Mackenzie Gas Project until at least 2049.
Maps were developed to show the current physical footprint of human activities in the area of the Project and maps that show the maximum production scenario (although other scenarios would end up at the same point but several years later). The GLJ Study does not describe the associated infrastructure (e.g. compressor stations, roads, borrow sites, etc.) and they are not included in the maps for this study. Up to 3800 km of pipeline, 684 new wells and an estimated 60,600 linear km of new land-based seismic lines may be needed to keep the Mackenzie Gas Project pipeline filled from the Mackenzie Delta/Beaufort Sea and the Colville Hills.
The maps in the CARC study show the Mackenzie Gas Project physical footprint at various stages of the development such as:
2009 (completed construction);
2011 (connection of known resources to the pipeline including Colville Hills and remaining onshore fields in the Mackenzie Delta);
2013 (connection of new production wells in the Colville Hills and onshore areas of the Mackenzie Delta);
2016 (connection of known offshore wells in the Beaufort Sea); and
2027 (connection of new production wells in the Beaufort Sea).
The GLOBIO methodology of predicting ecological effects from human activities was applied to the terminal development at 2027 (only in onshore areas and only in the terrestrial environment) to present the potential for cumulative effects from the Project.
Further study is suggested to include all possible infrastructure in the maps and modelling (e.g. access roads, borrow pits, gathering systems, compressor stations, camps), better mapping of potential development within the producing areas, and more precise zones of influence on the Mackenzie Delta/Beaufort Sea terrestrial/aquatic/marine ecosystems.
The full technical report for the maps and modelling can be found on the CARC website at www.carc.org
Prepared by:
Kevin O’Reilly
Research Director
Canadian Arctic Resources Committee
Box 1705
Yellowknife NT
X1A 2P3
867-873-4715 Phone
867-920-2685 Fax
carc@theedge.ca
www.carc.org
January 4, 2005