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Tethys Oil

Tethys Oil

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Tethys Oil 2021 reserves development – 2P reserve replacement ratio 82 percent

00:25 / 8 February 2022 Tethys Oil Press release

Tethys Oil’s net working interest Reserves in Blocks 3&4 Oman as per 31 December 2021 amount to 26,174 thousand barrels of oil (“mbo”) of proven and probable Reserves (2P). The 2P reserve replacement ratio amounts to 82 percent. In addition, Tethys Oil's net working interest resources oil base in Oman amounts to 15,600 mbo of 2C Contingent Resources. The Company’s 2021 and 2020 year-end Reserves reports were audited by ERC Equipoise Limited (“ERCE”) as independent qualified Reserves evaluator.

Development of Reserves, Blocks 3&4 (Audited)
mbo 1P 2P 3P
Total 31 December 2020 17,948 26,922 37,874
Production 2021 -4,057 -4,057 -4,057
Additions and revisions 3,366 3,309 5,587
Total 31 December 2021 16,645 26,174 38,449
Reserve replacement ratio, % 83% 82% 137%

Additions and revisions include maturation of Contingent Resources to Reserves from the ongoing appraisal program of Ulfa, Erfan and Anan fields as well as upside revisions of the Reserves on the Farha South and Shahd fields.

Based on ERCE’s model and current oil price assumptions, Tethys Oil’s net entitlement Reserves (Reserves after government take) amount to 7,825 mbo of 1P, 10,786 mbo of 2P and 14,233 mbo of 3P.

In addition to Reserves, Tethys Oil also announces net working interest Contingent Resources. The bulk of the estimated Contingent Resources are contained in the Ulfa, Samha and Erfan fields with a contribution from extensions in the Shahd fields. Development of the Contingent Resources in the discoveries is contingent upon the on-going appraisal programme, a committed work programme as well as budget to access these resources.

Contingent Resources, Blocks 3&4 (Audited)
mbo 1C 2C 3C
Total 31 December 2021 5,640 15,600 33,360

The audit of the Reserves in Oman have been conducted using 2018 Petroleum Resources Management System (PRMS2018), sponsored by the Society of Petroleum Engineers (SPE), World Petroleum Council (WPC), American Association of Petroleum Geologists (AAPG) and Society of Petroleum Evaluation Engineers (SPEE).

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This information was distributed by MFN