Deep Well Reports Lighter-than-Expected Oil at Sawn Lake
Deep Well Oil & Gas, Inc. and its subsidiaries on Wednesday announced further results of the most recently drilled wells located at 4-32-91-12W5M ("4-32") and 7- 30-91-12W5M ("7-30") in the Sawn Lake oil sands property.
As the company stated on October 13, the log analysis assigns net oil pays of 23 and 22 meters to the 4-32 and 7-30 wells respectively. This is above the average net oil pay of 15 to 20 meters as reported by Canadian Society of Petroleum Geology for Peace River Bluesky Oil Sands.
The company previously reported an oil of 3.1 to 5.5 degree API gravity. However, more accurate and conclusive core analysis now available for wells 4-32 and 7-30 indicates a higher quality of oil in the range of 6.7 to 7.6 and 6.2 to 6.8 degree API gravity, respectively. Degrees "API" (American Petroleum Institute) is a standard measurement indicating the specific gravity of the oil. The higher the number, the "lighter" the crude oil.
Centistokes is a measurement of kinematic viscosity, indicating how the oil will flow under certain conditions. The lower the number, the better the flow characteristics of the oil. As reported previously, the initial viscosity for both wells was about 500,000 centistokes at 20 degrees Celsius. It has now been established to be between 263,000 and 475,000 centistokes at 20 degrees Celsius and between 172 and 237 centistokes at 105 degrees Celsius. Therefore, at a temperature slightly greater than boiling water, the oil from this reservoir should become mobile and flow similar to that of a medium gravity oil.
The previously announced permeability is in the order of 8 Darcies. Heavy oil reservoirs that exhibit a high permeability typically have good recovery and high production rates. Heavy oil reservoirs with a high permeability also exhibit a tendency for migration of gases and lighter hydrocarbons necessary for cold flow production.
As a result of migration, the area recently drilled no longer has gases and lighter hydrocarbon necessary for cold flow production. This is evident as the core samples from both wells showed very high oil saturation numbers with little to no light hydrocarbons resulting in no cold flow production during testing. Further exploratory work will be carried out to determine where the right Bluesky reservoir parameters might exist at Sawn Lake for cold flow production.
In general, the reservoir parameters at the location of the most recently drilled wells show promise and favorable parameters for a successful secondary recovery project.
Consideration is also being given to determine the best technology under which oil can be produced from the Sawn Lake Project, taking into consideration the highly successful methods used by other nearby leaseholders producing from the same formation.
Under the present farmout agreement with Signet Energy Inc., Signet has to drill 7 more horizontal wells by February 2008 at no cost to Deep Well Oil and Gas, Inc., in order to earn the 40% working interest in the entire Sawn Lake Project.
Deep Well Oil & Gas, Inc. is a Nevada corporation based in Alberta Canada. Deep Well and its subsidiaries Northern Alberta Oil Ltd. and Deep Well Oil & Gas (Alberta) Ltd. have an 80% working interest, subject to a farmout agreement, in 63 contiguous sections of oil sands leases and 6.5 sections of oil sands permits in the Sawn Lake heavy oil area in North Central Alberta. The permits and leases cover 43,964 acres. To fully earn their interest in the project, Signet Energy must drill 10 wells at no cost to Deep Well by, February 25, 2008. Once the 10 wells are drilled, Deep Well will then directly hold 40% of the project. In addition, Deep Well owns 7.55 million common shares of Signet. A previously published independent engineering report estimated that, there are 819.5 million original barrels of oil in place.
- Deep Well Welcomes New Members to Board (Mar 09)
- Deep Well Appoints Donald Wayne to Board of Directors (Sep 22)
- Deep Well Converts 5 Oil Sands Permits to Leases, Mulls Devt Options (May 12)
Company: Signet Energy more info
- Deep Well Resolves Sawn Lake Issues (Dec 04)
- Deep Well Reports Lighter-than-Expected Oil at Sawn Lake (Nov 15)
- Signet Completes Second & Third Horizontal Wells at Sawn Lake (Sep 19)