Moya Little, President
Suite 105, 214 - 11 Avenue SE,
Calgary, Alberta, Canada
Phone: (403) 543-4080
> Geology - WATERFLOOD
Structural Cross Sections A-A’ and B-B’ illustrate the stratigraphy of the Lower Glauconite Mannville T13T reservoir. Convega Energy Ltd. completed a complex correlation of the T13T stratigraphy utilizing regional coals in the area. As noted on the cross sections, Convega has determined that the reservoir is absent on the North, Northwest and Eastern boundaries the Mannville T13 T pool. This results in the isolation of the T13T pool from the Cessford Commingled 002 Glauconite oil pool to the east. Possible explanations for the T13T stratigraphic trap includes erosion by Upper Mannville lithic channels, deposition of the sand in an oxbow environment or a combination of both. The cross sections also illustrate that structurally, the T13T reservoir sand is essentially flat dipping very slightly to the SE of the Convega lands.
The isolation of the T13T pool may present a potential opportunity for an EOR scheme on 100% working interest owned Convega Energy Ltd. Convega is in the fortunate position where by it is the sole working interest owner within the pool. In this position the Convega interest does not involve additional offsetting working interests that would require unitization.
From open-hole log evaluation net oil pay was determined using cut-off values of 15% density log porosity and a 50% log derived water saturation and ranges from 1.2 meter to 3.6 meters. From these cut-offs the net oil pay map was constructed.
The net oil pay map was planimetered and a reservoir volume of 659.6 Ha-m. was determined. Using an average porosity of 23%, water saturation of 30% and an oil shrinkage of 0.92 the volumetric initial oil in place calculated; Volumetric Initial Oil in Place: 907,000 m3