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United Oil & Gas PLC: CPR upgrades offshore Jamaica prospect to 229 million bbls on Tullow Oil-operated licence

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Oilfield Technology,


  • Highlights High impact licence further upgraded by CPR based on new 2018 3D seismic data.
  • 229 MMstb of Gross Unrisked Mean Oil Prospective Resources has been assigned by ERCE to the high-grade undrilled Colibri prospect on the Tullow Oil-operated Walton-Morant licence, offshore Jamaica – an increase of 10 million stb gross compared to previous estimates.
  • The CPR assesses just one of a number of other structures the Company has identified in the licence.
  • The increase in Gross Unrisked Mean Prospective Resources provides encouragement as progress is made towards a joint farm-down process.

United Oil & Gas Plc, the London Stock Exchange listed oil and gas exploration and development company, has announced the results of an independent Competent Person’s Report prepared by ERC Equipoise Ltd covering the Walton-Morant licence, offshore Jamaica.

This includes an increase in Gross Unrisked Mean Oil Prospective Resources for the high grade undrilled Colibri prospect to 229 million stb recoverable from 219 million stb, and an increase in the geological chance of success. United holds a 20% equity interest in the 32 065 km2 Licence, with the remainder held by Tullow Jamaica Ltd (‘Tullow’), a wholly owned subsidiary of leading independent oil and gas exploration and production company Tullow Oil plc.

ERCE was commissioned to update its 2017 volumetrics for the undrilled Colibri prospect following the acquisition of 2250 km2 of state-of-the art 3D seismic data, the first ever acquired offshore Jamaica, in May 2018. The CPR represents the culmination of a defined work programme to de-risk highly prospective Cretaceous and Tertiary-aged clastic and carbonate reservoir targets, including Colibri, that have been mapped by Tullow on 2D seismic data.

United Oil & Gas PLC CEO, Brian Larkin, said: "The high-grade undrilled Colibri prospect has not only passed robust and comprehensive technical scrutiny by an independent third party, but ERCE has seen fit to upgrade the gross Mean Unrisked Prospective Resources to 229 million stb and to increase the likelihood of success. This is a standout outcome, as it is not uncommon for volumes to be downgraded when structures, that have previously been identified on 2D seismic, are mapped on a 3D dataset. The upgrade in the resources assigned to Colibri is testament to the work carried out by the partners, the quality of the licence and the strength of the geological model we have put in place. The next step for Colibri would be making the decision to drill what could be a transformational well for United and with this in mind we are working closely with Tullow on a forward plan for the Licence.

“Gross Unrisked Mean Prospective Resources of 229 million stb are eye-catching, particularly for a company of our size. While not included in this CPR, we have identified a number of other structures which we believe would be significantly de-risked were a well targeting Colibri to be successful.

“We have already seen considerable industry interest in the Walton Morant Licence. This CPR and the ongoing seismic interpretation will provide additional impetus to the joint farm down process which we are confident will allow United to participate in this licence at a low-cost exposure, while continuing to offer considerable potential upside for shareholders.”

ERCE has given its consent to the reference to its CPR in this announcement. ERCE confirms it has reviewed this announcement and confirms that the estimates of Gross and Net Unrisked Prospective Resources have been correctly extracted from the CPR.

The CPR has been signed by Mr Simon McDonald, Founder Director of ERCE, a Chartered Engineer and the Past President of The Society of Petroleum Evaluation Engineers (SPEE), who has over 40 years’ experience in the evaluation of oil and gas fields and acreage, preparation of development plans and assessment of reserves and resources.

Read the article online at: https://www.oilfieldtechnology.com/offshore-and-subsea/21022019/united-oil-gas-plc-cpr-upgrades-offshore-jamaica-prospect-to-229-million-bbls-on-tullow-oil-operated-licence/

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