REG - 88 Energy Limited - Hickory-1 Upper SFS Zone Flows Light Oil
02/04/2024 07:00
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RNS Number : 8990I 88 Energy Limited 02 April 2024
This announcement contains inside information
2 April 2024
88 Energy Limited
HICKORY-1 UPPER SFS ZONE FLOWS LIGHT OIL
Highlights
· Flow testing of the Upper SFS (USFS) reservoir confirms light oil
discovery at Hickory-1.
· USFS flow rates achieved from low volume frac over small 20ft vertical
interval are in line with expectations and results observed from other
reservoirs on adjacent acreage.
· USFS test produced at a peak gauge flow rate of over 70 barrels of oil
per day (bopd) of light oil. Multiple oil samples recovered, measuring
~40-degree API oil gravity.
· Quality and deliverability of the USFS reservoir now confirmed via oil
production to surface under natural flow, with flow back fluids including
unquantified volume of marketable natural gas liquids (NGLs) and associated
gas, consistent with tests on adjacent acreage.
· 88 Energy will now seek an Independent Contingent Resource declaration
for both the Upper SFS and Lower SFS reservoirs based on the flow of
hydrocarbons to surface.
· Flow testing operations will transition to testing the shallower SMD-B
reservoir over the next few days, in-line with the multi-reservoir, staged
flow test approach adopted for Hickory-1.
88 Energy Limited (ASX:88E, AIM:88E, OTC:EEENF) (88 Energy or the Company) is
pleased to announce successful flow testing of the Upper SFS reservoir in the
Company's Hickory-1 discovery well, located in Project Phoenix on the North
Slope of Alaska (88 Energy ~75% WI owner).
Managing Director, Ashley Gilbert, commented:
"Outcomes from this test represent a significant milestone for 88 Energy and
its shareholders, with the first successful flow of oil to surface achieved at
the Company's Alaska projects.
The completion of flow testing in this zone and recovery to surface of light
oil, in addition to NGLs and associated gas, confirms our understanding of the
substantial potential of these reservoirs. Significantly, these flow rates
were achieved from only a 20ft perforated section in a vertical well with a
low volume stimulation over a short period. As previously highlighted,
production rates in long horizontal production wells are typically multiples
of 6 to 12 times higher than tested in vertical wells, as evidenced in many
Lower 48 analogues.
Importantly, the Upper SFS zone had not previously been intersected or tested
at either Project Phoenix or on adjacent acreage. It is particularly exciting
for us to produce oil to surface and demonstrate the producibility of this
additionally discovered reservoir. Future plans for the assessment of the
commerciality of Project Phoenix will be communicated post analysis of the
Hickory-1 program.
We will now proceed to undertake flow testing of the shallower SMD-B reservoir
over the coming weeks. This is a zone which has previously been successfully
tested on adjacent acreage to the north.
We look forward to continuing to update shareholders on the progress of our
Hickory-1 flow testing operations."
Upper SFS flow test results
A 20ft perforated interval in the Upper SFS reservoir was stimulated via a
single fracture stage of 241,611 lbs proppant volume. The well was cleaned-up
and flowed for 111 hours in total, of which 88 hours was under natural flow
back and 23.5 hours utilising nitrogen lift.
The USFS test produced at a peak flow rate of over ~70 bopd. Oil cuts
increased throughout the flow back period as the well cleaned up, reaching a
maximum of 15% oil cut at the end of the flow test program. Oil rates and cut
would have likely increased further should the test period have continued. The
well produced at an average oil flow rate of approximately 42 bopd during the
natural flow back period, with instantaneous rates ranging from approximately
10 - 77 bopd with average rates increasing through the test period.
Importantly, the USFS zone flowed oil to surface under natural flow, with
flow back from other reservoirs in adjacent offset wells only producing under
nitrogen lift. A total of 3,960bbls of fluid was injected into the reservoir
and 2,882bbls of water was recovered during the flow back period, most of
which being injection fluid. Total flow rates (inclusive of recovery of frac
fluid) averaged ~600 bbl/d over the duration of the flow back.
Multiple oil samples were recovered with measured oil gravities of between
39.9 to 41.4 API (representing a light crude oil).
Additionally, some NGLs were produced but not measured, as was anticipated in
the planning phase. The presence of NGLs was demonstrated by samples from the
flare line and by visible black smoke in the flare. Historically, NGL prices
on the North Slope of Alaska have been similar or slightly below light oil
prices and are therefore considered highly valuable. Further work is required
to quantify the exact volume of NGLs, which 88 Energy intends to include as
part of a maiden certified Contingent Resource assessment at Project Phoenix
for the SFS reservoirs.
Figure 1: (left) Two sample bottles of 41.4-degree API oil sampled from the
oil leg in the separator. (middle)104-degree Fahrenheit fluid sample from
Hickory-1 USFS flow test, which is temperature corrected to 41.4-degree API at
60F (right) Sample of NGLs taken from the gas flare line.
Figure 2 Successful flow test undertaken on the Upper SFS reservoir in Project
Phoenix.
SMD-B flow testing operations
Preparation for the next state of the Hickory-1 flow testing schedule in
underway and will focus on the proven SMD-B reservoir. As with the USFS test,
this zone will be independently isolated, stimulated and flowed to surface.
Testing operations are scheduled to complete in April 2024, with the on ground
Alaskan team working hard to progress to this next stage as quickly as
possible. Weather condition have been particularly challenging with low
temperatures and high winds experienced during operations to date.
Further updates on the Hickory-1 flow test operations will be provided in due
course.
Additional information related to Hickory-1:
Hickory-1 is located in State lands on the North Slope of Alaska, adjacent to
the Dalton Highway and Trans Alaska Pipeline, within Alaskan Oil and Gas lease
ADL 392314. 88 Energy holds a ~75% working interest in the well and is
Operator. The well spudded on 9 March 2023 and was drilled to a Total Depth of
10,650 feet. Multiple prospective pay zones in sandstone reservoir between
depths 7,700 and 10,500 were identified.
88 Energy reported a maiden, independently certified Contingent Resource
estimate of 136 MMbbl of hydrocarbon liquids (gross best estimate (2C)) and
628 BCF of gas, for the Basin Floor Fan (BFF) reservoir in Project Phoenix on
6 November 2023.
Figure 3: Flaring of gas and NGLs.
This announcement has been authorised by the Board.
Media and Investor Relations:
88 Energy Ltd
Ashley Gilbert, Managing Director
Tel: +61 8 9485 0990
Email:investor-relations@88energy.com
Fivemark Partners, Investor and Media Relations
Michael Vaughan Tel: +61 422 602 720
EurozHartleys Ltd
Dale Bryan Tel: + 61 8 9268 2829
Cavendish Capital Markets Limited Tel: +44 (0)207 220 0500
Derrick Lee Tel: +44 (0)131 220 6939
Pearl Kellie Tel: +44 (0)131 220 9775
Pursuant to the requirements of the ASX Listing Rules Chapter 5 and the AIM
Rules for Companies, the technical information and resource reporting
contained in this announcement was prepared by, or under the supervision of,
Dr Stephen Staley, who is a Non-Executive Director of the Company. Dr Staley
has more than 40 years' experience in the petroleum industry, is a Fellow of
the Geological Society of London, and a qualified Geologist/Geophysicist who
has sufficient experience that is relevant to the style and nature of the oil
prospects under consideration and to the activities discussed in this
document. Dr Staley has reviewed the information and supporting documentation
referred to in this announcement and considers the resource and reserve
estimates to be fairly represented and consents to its release in the form and
context in which it appears. His academic qualifications and industry
memberships appear on the Company's website and both comply with the criteria
for "Competence" under clause 3.1 of the Valmin Code 2015. Terminology and
standards adopted by the Society of Petroleum Engineers "Petroleum Resources
Management System" have been applied in producing this document.
Appendix A
Reporting of Material Exploration and Drilling Results Pursuant to ASX Listing
Rules, Chapter 5
ASX Listing Rule Requirement Hickory-1 Well Test Reporting
5.30 (a) The name and type of well Hickory-1, vertical exploration well
(b) The location of the well and the details of the permit or lease in which the Hickory-1 is located in State lands on the North Slope of Alaska, adjacent to
well is located the Dalton Highway and Trans Alaska Pipeline, within Alaskan Oil and Gas lease
ADL 392314
(c) The Company's working interest in the well ~75%
(d) Gross pay thickness and net pay thickness N/A
(e) Geological rock type of the formation drilled Sandstone
(f) Depth of the zones tested Upper SFS perforation interval: 9,005' - 9,025' MDRT
(g) Types of tests undertaken and the duration of the tests Fracture stimulate and flow test the USFS formation, utilising a combination
of natural and nitrogen lift. The well flowed naturally for a period of
approximately 88 hours and flowed under nitrogen lift for an approximately 23
hours period.
(h) The hydrocarbon phases recovered in the tests Oil and gas were recovered and measured. A proportion of NGLs were possibly
captured in the oil stream, however, not separately measured. Gas samples
taken will be analysed post the flow test operations to determine proportion
of NGLs.
(i) Any other recovery, such as formation water and water, associated with the 2,882 bbls of water was recovered during flow back, consisting of frac fluids
tests and their respective proportions injected into the reservoir (approximately 3,960 bbls of fluid was injected
during frack operations). Further analysis of fluids will be conducted post
the flow test to determine extent of reservoir fluids.
(j) The choke size and flow rates and, if measured, the volumes of the hydrocarbon Various choke sizes used during flow back operations from 8/64ths to 42/64ths
phases measured of an inch. Total flow rates (inclusive of recovery of frac fluid) averaged
~600bbl/d over the duration of the flow back. Oil cut following establishment
of production ranged from 3% to 15% at the end of the test period. A total
volume during the flow back period following establishment of oil cut of 24.8
stk bbls of oil recovered following establishment of oil rates. A total of
1.45mmscf of gas and NGL's were recovered from the Upper SFS test, though
proportions of marketable NGLs will be determined during post well analysis.
(k) If flow rates were tested, information about the pressures associated with the Well head pressures over the duration of the natural flow back period ranged
flow and the duration of the test from 2,000 to 420psig. Whilst nitrogen lift occurred pressures ranged from 250
to 1,000psig.
(l) The number of fracture stimulation stages and the size and nature of fracture The Upper SFS zone was stimulated in a single stage and utilised a
stimulation applied cross-linked polymer gel. The volume of sand proppant pumped was 241,660 lbs
for the Upper SFS.
(m) Any material volumes of non-hydrocarbon gases, such as carbon dioxide, The Upper SFS test showed no measurable CO2 or H2S. No other impurities were
nitrogen, hydrogen sulphide and sulphur detected on site.
(n) Any other information that is material to understanding the reported results The Company will conduct post flow test analysis to determine the quantity of
marketable NGLs that were produced. Pressurised gas and oil samples have been
taken. The company anticipates NGLs produced to be at a similar rate to those
observed during flow tests on adjacent acreage given the consistency of
results observed between the USFS test and tests conducted on adjacent wells.
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