Mosman Oil & Gas Regulatory News (MSMN)

22 September 2020

Mosman Oil and Gas Limited

 ("Mosman" or the "Company")

Falcon and Stanley Drilling

Mosman Oil and Gas Limited (AIM: MSMN) the oil exploration, development, and production company, announces that the Falcon-1 well at the Champion Project in East Texas has been spudded. Mosman has a 50% working interest in the well and the lease.

Background

The Champion Project in located in a proven production area. Several wells in the immediate area produce oil, gas and/or a combination of gas, condensate, and other petroleum liquids. The Falcon-1 drilling location has been chosen adjacent to existing production infrastructure suitable for production of both oil and gas. Geological mapping is based on existing wells and 3D seismic modelling.

Falcon-1

The well is being directionally drilled to penetrate two prospective target zones in the Frio sandstone, which is a prolific production zone in this area. The two target formations within the Frio Group are the Hartburg and Nodosaria members between 7,400-7,500 feet True Vertical Depth ("TVD"). As this is a directional well, the measured depth will be greater than the TVD with a planned depth of 7,700 feet.

Stanley (Circa 16.5% working interest)

Last week a service rig was used at Stanley-1 for the planned workover. It completed that task and the well again produced oil. The service rig will now move to Stanley-4 to bring that recently drilled well on production.

Flow rates from both Stanley-1 and Stanley will be published when advised by the Operator.

John W Barr, Chairman, said:

"Falcon-1 well is the first well that Mosman has participated in at the Champion Project. Success at Falcon would be a major step forward for Mosman to build production and provide information for further drilling and development of the Champion area.

"In addition, Mosman is seeking opportunities to expand its leasehold footprint in the East Texas area. Most recently an interest in the Greater Stanley Project was acquired, and other acquisitions are being reviewed to determine potential investment."

Competent Person's Statement

The information contained in this announcement has been reviewed and approved by Andy Carroll, Technical Director for Mosman, who has over 35 years of relevant experience in the oil industry. Mr. Carroll is a member of the Society of Petroleum Engineers.

Market Abuse Regulation (MAR) Disclosure

Certain information contained in this announcement would have been deemed inside information for the purposes of Article 7 of Regulation (EU) No 596/2014 until the release of this announcement.

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