Chapter 10 Table Gas Production from the Elk Point Group
Gas production from the Elk Point Group is primarily derived from reefs in northeastern British Columbia and northwestern Alberta. There are eighteen Elk Point gas fields with Initial Established Marketable Gas Reserves of over 1000 x 106m3 (35 BCF). The ten largest Elk Point gas fields, listed in order of Initial Established Marketable gas reserves, are shown in Table 1. Cumulative production data include totals released to the end of 1990.
Table 1. Ten Largest Elk point Gas Fields (in units of 106m3).
|No.||Field||Formation||No. of Pools||Marketable Reserves||In-place Volume||Cumulative Production||Discovery Year|
|7||Rainbow South||Keg River||63||4,212||9,316||1,480||1965|
From Table 1, the two largest fields occur along The Middle Devonian reef edge flanking the Otter Park Shale Basin in northeastern British Columbia. Major gas production from the Elk Point is also present in the Gilwood at Mitsue and Nipisi and in the Keg River pinnacles in the Rainbow, Zama and Rainbow South basins.
Total recoverable gas reserves in the Elk Point are estimated at 142.7 x 109m3, of which 79.4 x 109m3 have already been produced. Initial Established In-Place Volume of Elk Point gas reserves totals 214.3 x 109m3. There are 896 Elk Point gas pools, with an average 159 x 106m3 recoverable gas reserves/pool.
Much of the Elk Point gas production is from small pools, such as are found in the Zama field. Table 2 lists the distribution of Elk Point gas reserves according to In-Place Pool Size
Table 2. Size Distribution of Elk Point Gas pools (in units of 106m3)
|In-Place Pool Size Class||No. of Pools||Recoverable Reserves||Cumulative Production|
|1.0 to 10||122||385||43|
|10 to 100||631||12,921||1,559|
|100 to 1000||114||17,898||4,561|
|1000 to 10000||26||42,203||25,533|
|Total||896||142,745 x 106m3||79,458 x 106m3|