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Westmount Energy Announces Tanager-1 Well Results

Source: www.gulfoilandgas.com 11/17/2020, Location: South America

Westmount, the AIM-quoted energy investing company focussed on the Guyana-Suriname Basin, announces, further to the announcement by Ratio Petroleum Energy Limited Partnership, that the Tanager-1 well, offshore Guyana, has been reported as an oil discovery which is currently considered to be non-commercial as a stand-alone development.

The Tanager-1 exploration well is the deepest well drilled in the Guyana-Suriname Basin to date. It was spudded on the 11th August 2020, using the Stena Carron drillship, and reached a total depth of 7,633 metres in recent days. Evaluation of LWD, wireline logging and sampling data confirm 16 metres of net oil pay in high-quality sandstone reservoirs of Maastrichtian age. Preliminary evaluation of the fluid samples from the Maastrichtian reservoir indicates heavier oil than is reported from the Liza Phase I producing field crude assays and these samples will be the subject of further detailed laboratory analysis over the coming months. Although high quality reservoirs were also encountered at the deeper Santonian and Turonian intervals, interpretation of the reservoir fluids is reported to be equivocal at this stage and requires further analysis. It is anticipated that the well will now be plugged and abandoned in the coming days.

The Tanager-1 results confirm the continuance of a Cretaceous petroleum system and the Liza play fairway onto the Kaieteur Block, down dip from the prolific discoveries on the neighbouring ExxonMobil operated Stabroek Block. It is anticipated that the Kaieteur Block partners will now conduct a detailed evaluation of the data collected at Tanager-1 with a view to understanding the well result, re-calibrating the seismic model for this part of the basin and high grading the next potential drilling targets on the Kaieteur Block. A substantial prospect inventory has already been mapped across the 5,750 km2 3D seismic survey, which was acquired in the southern part of the Kaieteur Block in 2017.

The Kaieteur Block is currently operated by an ExxonMobil subsidiary, Esso Production & Exploration Guyana Limited (35%), with Cataleya Energy Limited ("CEL") (25%), Ratio Guyana Limited ("RGL") (25%) and a subsidiary of Hess Corporation (15%) as partners. Westmount holds approximately 5.4% of the issued share capital of Cataleya Energy Corporation1 the parent company of CEL and circa 0.7% of the issued share capital of Ratio Petroleum Energy Limited Partnership the ultimate holding entity with respect to RGL.

1 Based upon number of shares in issue at 30th August 2019

Gerard Walsh, Executive Chairman of Westmount, commented:

"The outcome of the Tanager-1 exploration well has proved to be a mixed bag - confirming the extension of the Liza play fairway onto the Kaieteur Block but apparently coming up short at the deeper stratigraphic levels. As Tanager is a stacked pay prospect, success at a number of stratigraphic levels is required to achieve stand-alone commercial discovery volume thresholds. However, these deeper results must be viewed in the context of the very limited number of penetrations of these deeper plays to date - indicating that exploration of these deeper plays, offshore Guyana, is at an early part of the learning curve.

"Furthermore, Westmount shareholders can look forwards to the near-term drilling of the next prospects in the portfolio which are independent of the outcome of the Tanager-1 well - including the Bulletwood-1 well, on the Canje Block, which we anticipate will be spudded in late December 2020 or early 2021. Bulletwood-1 will target a circa 500 MMbbl 'Liza look-alike' confined channel complex of Maastrichtian-Campanian age.

"The Kaieteur and Canje blocks are adjacent to the Stabroek Block which has delivered eighteen substantial oil discoveries since 2015, with reported discovered recoverable resources of circa 9 billion oil-equivalent barrels to date. We remain hopeful that our strategy of a portfolio approach in this prolific hydrocarbon province - with large Upper Cretaceous prospects, independent geological risks and scheduled drilling - can deliver for our shareholders."

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