REG - Quantum Helium Ltd - Sagebrush Resource Update

Quantum HeliumAnnouncement

15/12/2025 08:30

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RNS Number : 5624L  Quantum Helium Limited  15 December 2025

 

15 December 2025

 

Quantum Helium Limited

("Quantum" or the "Company")

 

 

Quantum Updates Resources at Sagebrush Following Increase to Working Interest

Quantum Helium Limited (AIM: QHE), advancing helium, hydrogen and hydrocarbon
projects in the USA, provides updated net resource figures for the Sagebrush
Helium Project in Colorado following the increase in its working interest from
82.5% to 90%, as announced on 11 December 2025.

The underlying gross volumes remain unchanged from the Sproule ERCE
independent evaluation announced on 18 September 2025 under SPE PRMS Standard
(*), with Quantum's higher working interest now reflected in the revised net
figures.

Updated Net Prospective Resources - Sagebrush

(Net After 16.67% Royalty, Net to Quantum at 90% WI)

Source of gross resource data: Sproule Sagebrush Resource Evaluation Report
(18 September 2025).

Helium (MMscf)
 Estimate  Gross Helium  Net After Royalty  Net to Quantum (90% WI)
 1U        80            67                 60
 2U        134           112                101
 3U        269           224                202

 
Hydrocarbon Gas (MMscf)
 Estimate  Gross Hydrocarbon Gas  Net After Royalty  Net to Quantum (90% WI)
 1U        661                    551                496
 2U        1,101                  917                825
 3U        2,218                  1,848              1,663

 

 

CO₂ (MMscf)
 Estimate  Gross CO₂    Net After Royalty  Net to Quantum (90% WI)
 1U        1,161        968                871
 2U        1,964        1,637              1,473
 3U        3,899        3,249              2,924

 

Total Raw Gas (MMscf)
 Estimate  Gross Total Gas  Net After Royalty  Net to Quantum (90% WI)
 1U        2,906            2,422              2,180
 2U        4,842            4,034              3,631
 3U        9,760            8,133              7,320

 

Sagebrush Seismic Acquisition Update

The high-resolution 3D seismic programme at Sagebrush continues to progress
very well. Field crews have maintained strong productivity throughout the past
week, with data recording and receiver retrieval proceeding smoothly, and
overall acquisition now well advanced.

Based on current progress, the Company expects the seismic survey to be
substantially completed by the middle of this week, after which the dataset
will move into processing. Initial processed outputs remain on track for
delivery in January.

Qualified Person Statement

The information contained in this announcement has been reviewed and approved
by Jeff Aldrich, Principal Geoscientist P.G., L.P.G, Sproule ERCE. Certified
Petroleum Geologist (CPG), American Association of Petroleum Geologists (AAPG)

Note: (*) Resources have been estimated by Sproule ERCE using the reserve and
resource estimation guidelines outlined by the Petroleum Resources Management
System (PRMS), as revised June 2018.  Helium and Carbon Dioxide gas has been
evaluated as a non-hydrocarbon gases using the principles of the SPE PRMS as
allowed by the SPE August 2022 statement on the "Extension of PRMS Principles
to Non-Hydrocarbon/Non-Traditional Situations".

 

Enquiries:

 Quantum Helium Limited     NOMAD and Joint Broker

 Carl Dumbrell              SP Angel Corporate Finance LLP

 Chairman                   Stuart Gledhill / Richard Hail / Adam Cowl

                            +44 (0) 20 3470 0470
 Brand Communications       Joint Broker

 Alan Green                 CMC Markets UK Plc

 Tel: +44 (0) 7976 431608   Douglas Crippen

                            +44 (0) 020 3003 8632

 

Updates on the Company's activities are regularly posted on its website:
www.quantum-helium.com

 

Notes to editors

Quantum (AIM: QHE) is a helium, hydrogen and hydrocarbon exploration,
development, and production company with projects in the US and Australia.
Quantum's strategic objectives remain consistent: to identify opportunities
which will provide operating cash flow and have development upside, in
conjunction with progressing exploration. The Company has several projects in
the US, in addition to royalty interests in Australia.

 

Glossary

 Term                  Definition
 1U / Low Estimate     At least a 90% probability that the quantities recovered will equal or exceed
                       this estimate.
 2U / Best Estimate    At least a 50% probability that the quantities recovered will equal or exceed
                       this estimate. Often considered the "most likely" case.
 3U / High Estimate    At least a 10% probability that the quantities recovered will equal or exceed
                       this estimate. Represents upside potential.
 Contingent Resource   Those quantities of petroleum estimated, as of a given date, to be potentially
                       recoverable from known accumulations by application of development projects,
                       but which are not currently considered to be commercially recoverable owing to
                       one or more contingencies.
 MMscf                 Million standard cubic feet of gas, measured at standard conditions of
                       temperature and pressure.
 Mscf                  Thousand standard cubic feet of gas, measured at standard conditions of
                       temperature and pressure.
 Prospective Resource  Those quantities of petroleum estimated, as of a given date, to be potentially
                       recoverable from undiscovered accumulations by application of future
                       development projects.

 

 

 

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