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Figure Captions
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Canada
is the third largest gas producer and second largest gas exporter in the
World; however, Canada’s proved gas reserves represent less than 1% of
the World reserves. Production has been dominated by conventional gas
production from the Western Canada Sedimentary Basin (WCSB),
particularly the Province of Alberta that has historically provided 80%
of all Canada’s gas production (Figure 1).
Alberta’s conventional gas production peaked in 2000 (Russum, 2002,
2003) and Canada’s gas production probably peaked in 2001. Extraordinary
levels of drilling are required to sustain Canadian gas production with
Canada having nearly 20% of the World’s drilling rigs (Russum, 2004).
A
recent study of production in the WCSB showed that 35 out of 128 play
areas in the WCSB showed production growth in the past five years (PetroCube,
2005), in addition to the coalbed methane (now called Natural Gas from
Coal – NGC in Canada) from the Horseshoes Canyon of the Upper Cretaceous
Edmonton Group.
Some of
this production growth can be accounted for by down-spacing or
acceleration of existing production; however, there are still many true
growth opportunities in plays in the WCSB.
Figure 2 shows the distribution of
formations with production growth by Play Area. It is clear that these
opportunities are scattered throughout the Basin. Understanding these
plays and developing realistic expectations for results are key to
developing and executing successful strategies.
Four gas
opportunities are compared in the oral presentation using very current
data ; these are:
-
‘Resource’ plays in northeastern British Columbia.
-
‘Deep
basin’ gas in west-central Alberta.
-
Coalbed
methane in cntral Alberta.
-
Shallow
gas in southwestern Saskatchewan.
In
addition a number of new gas developments are highlighted (in the oral
presentation) that may be regarded as emerging plays.
The
reserves, productivity, success rates, and relative economic impact
provide important guidance for the expected results from pursuing the
various plays. However, it is clear that every play has certain
threshold requirements and requires specific expertise both technical
and operational to be economical successful.
The importance of using current data cannot be
understated since the average well productivity in virtually every play
has declined significantly over recent years. Very current information
can be obtained using PetroCube. Please contact the authors for more
information.
PetroCube, 2005,
www.petrocube.com.
Russum, D., 2002, Exploration
in the 21st Century - the end of elephant hunting?: CSPG Convention
Russum, D., 2003, Is Canada
running out of gas – the need for more and better exploration: CSPG
Convention
Russum, D., 2004, Canadian
natural gas : Past, present and . . . . .A new model for predicting the
future: TC-IRIS Seminar Series, Haskayne Business School, University of
Calgary.
Russum, D., 2004, “The urgent need for unconventional gas to sustain
Canada’s gas production: CSUG/PTAC
.
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