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SLG Sarantel A

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UK Oil & Gas Investments PLC Nutech Assessment of UKOG Weald Basin Interests (8941C)

21/10/2015 7:00am

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TIDMUKOG

RNS Number : 8941C

UK Oil & Gas Investments PLC

21 October 2015

21 October 2015

UK Oil & Gas Investments PLC

("UKOG" or the "Company")

Nutech Assessment of UKOG Weald Basin Interests and Wider Weald, Onshore UK

UK Oil & Gas Investments PLC (LSE AIM: UKOG) announces that it has received an oil in place ("OIP") volumetric evaluation that it commissioned Houston based Nutech, a leading specialist in the evaluation of tight oil plays, to conduct over eight of the licence areas in which the Company has an interest in the Weald Basin and also over the wider Weald Basin, located in southern England (the "Report").

Key Points:

-- A gross best estimate ("P50") OIP of 15.7 billion barrels ("BBO") is calculated to lie within three Jurassic shale and interbedded limestone tight oil plays underlying the 8 licence areas in the Weald Basin in which UKOG has an interest ("Licence Areas", covering 151 sq miles see Table 2).

-- Within this gross best estimate, an aggregate net attributable 3.9 BBO P50 OIP is calculated for UKOG's economic interests in the Licence Areas.

-- The three Jurassic tight oil plays underlying the wider Weald Basin's 1,261 sq mile area (the Area of Interest "AOI") are calculated to contain a gross best estimate P50 OIP of 124 BBO. Please note that other than UKOG's eight Licence Areas, in which it is calculated UKOG has a net attributable 3.9 BBO P50 OIP, the Company has no further economic interest in the AOI.

The gross P50 OIP for the Licence Areas stated above is the aggregate OIP for all eight licences, in which UKOG has varying economic interests. These eight licences represent the Company's total licence interests within the AOI.

The Report's executive summary is available on the Company's website (www.ukogplc.com).

Cautionary Statement

The Report's OIP numbers should be regarded as Total Petroleum Initially in Place, as defined by the Society of Petroleum Engineer's Petroleum Resource Management System of resource reporting.

As previously stated by the Company, it is emphasised that the above estimated OIP volumes should not be construed as recoverable resources, contingent or prospective resources, or reserves and also should not be construed in any way to reflect potential producibility of hydrocarbons from the formations evaluated prior to any successful flow tests and the assessment of an estimated recovery factor to these OIP volumes.

Until further work is done there can be no current estimate of the recovery rate for the Weald Basin or assurance that oil can be recoverable at all.

The Report

The Report's calculated OIP volumes are derived from a 3D geological and petrophysical static model containing analysis of 85 DECC/OGA released wells and one proprietary well over the wider Weald Basin. The Calculated OIP for the Licence Areas and wider Weald are shown in Table 1 below:

Table 1 - Nutech Calculated Jurassic Tight Oil OIP Under UKOG Licence Areas and Wider Weald Basin (BBO)

 
Area                             UKOG's Licence Areas (2)                        Weald Basin AOI 
                                                                                       (2) 
                                      (151 sq. miles)                            (1,261 sq. miles) 
---------------  --------------------------------------------------------  --------------------------- 
                       Gross Aggregate             Net Attributable              Gross OIP (BBO) 
                          OIP (BBO)               Aggregate OIP (BBO) 
---------------  ---------------------------  ---------------------------  --------------------------- 
Confidence       P90 Low  P50 Best  P10 High  P90 Low  P50 Best  P10 High  P90 Low  P50 Best  P10 High 
 level 
---------------  -------  --------  --------  -------  --------  --------  -------  --------  -------- 
Jurassic Tight 
 Oil (1)           8.1      15.7      29.4      2.0      3.9       7.2      61.8     124.3     229.9 
---------------  -------  --------  --------  -------  --------  --------  -------  --------  -------- 
(1) Jurassic tight oil is defined as the plays contained within 
 the source rock shale sequences and interbedded tight conventional 
 limestones of the Kimmeridge Clay, Oxford Clay and Lias Shale 
 Formations. Conventional reservoirs of the Corallian and Great 
 Oolite and of the overlying Portland section are excluded, as 
 they were not the purpose of the study. 
 (2) Volumetric estimates by Nutech. 
------------------------------------------------------------------------------------------------------ 
 

Kimmeridge Tight Oil Play OIP

The Report calculates that the most significant portion of the reported OIP lies within the Kimmeridge Clay Formation, with a calculated gross P50 OIP of 10.0 BBO in the Licence Areas (net attributable to UKOG of 2.4 BBO) and a calculated gross P50 OIP of 81.9 BBO within the overall AOI.

Three tight limestones within the Kimmeridge Clay Formation represent the Company's principal near-term tight oil exploration and appraisal focus, and are calculated to contain a gross P50 OIP of 2.1 BBO within the Licence Areas and a gross P50 OIP of 19.5 BBO within the overall AOI.

From earlier reports, the Kimmeridge limestones are interpreted by Nutech and by Schlumberger to contain hydrocarbons within the Company's Horse Hill-1 well, in which the Company has a 20.358% per cent economic interest, and are known to have flowed oil from the nearby Balcombe-1 well (in which the Company has no interest).

Possible Oil Producing Analogues

The Report also states that the Kimmeridge limestones are analogous to the oil productive Austin Chalk and Eagle Ford formations of the US. Furthermore, the analysed Kimmeridge section is possibly analogous to the known oil productive tight oil sections of the Bakken of the US Williston Basin, the Wolfcamp, Bone Springs, Clearfork, Spraberry, and Dean Formations in the US Permian Basin. These US analogues have estimated recovery factors of between 3% and 8% and in a few cases up to 15% of contacted OIP per well. These recovery factors are achieved with the use of well stimulation techniques.

Until further work is done there can be no current estimate of the recovery rate for the Weald Basin or assurance that any Oil in Place can be recovered at all.

It should be noted that Nutech's report and estimates contain judgements and assumptions that may differ from other prior studies. For example a prior study on the wider Weald basin by the British Geological Survey ("BGS") differs with Nutech's analysis largely as a result of differing judgements regarding the likely presence of oil in the Kimmeridge section as a result of different assumptions on the thermal maturity of the Kimmeridge section derived from the findings of the Horse Hill well.

Future Plans

As well as pursuing the appraisal and development of the separate Horse Hill Portland sandstone oil discovery, the Company will also focus on the appraisal of the Kimmeridge limestones at Horse Hill, which it believes present the most viable near-term objective for potential tight oil production in the basin, and which could potentially be produced utilising conventional limestone stimulation methods.

The planned Horse Hill-1 flow test, specifically designed to test the Kimmeridge limestones along with the Portland sandstone, is planned to be the next significant milestone in the Company's Kimmeridge "proof of concept" process. The Company expects these flow tests to be conducted within the next few months.

Following the expected approval of the Company's farm-in to the PEDL143 Holmwood licence (originally announced on 29 June 2015), the Company will participate in the drilling of the Holmwood-1 exploration well, which UKOG believe will provide a further Kimmeridge limestone proof of concept step alongside testing the conventional Portland and Corallian targets. This is planned for 2016 or 2017.

Stephen Sanderson, UKOG's Executive Chairman, commented:

"The first step in evaluating any tight oil play is to calculate the overall OIP using all available data. Nutech's study has based its OIP conclusions on its established well-by-well methodology that also fully incorporates geological insights gained from the Horse Hill-1 well.

These findings should now serve to give the market the Company's up to date and science-based view of the estimated quantity of OIP within UKOG's Licence Areas and in the wider Weald Basin.

The Company believes that the Report illuminates the wider Weald Basin's significant potential and demonstrates how the Company's interests fit within the overall geological picture. The calculated OIP volumes provide us with the necessary encouragement to proceed with our plans to prove the concept that oil may flow and possibly be recovered in commercial quantities from these tight oil plays. The planned activities in Horse Hill and Holmwood will therefore be key steps.

Although we are only in the early stages of this proof of concept process, the findings of our recently published Weald tight oil conceptual development studies, demonstrate that, in the success case, oil could be produced with sensitivity to the Weald locality. This is a fundamental aspect of the company's business philosophy."

Allen D Howard, Nutech's Chief Commercial Officer, commented:

"This was a very rigorous study analysing the oil in place measured in 86 wells calibrated by our own in-house core and cuttings analyses, geochemical and legacy data. This, coupled with the experience and knowledge Nutech brings from the majority of proven producing tight oil and gas plays in the USA, gives us confidence in the specific potential of the Weald's tight oil plays and the Kimmeridge limestone play in particular."

Qualified Person's Statement:

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October 21, 2015 02:00 ET (06:00 GMT)

Stephen Sanderson, UKOG's Executive Chairman, who has over 30 years of relevant experience in the oil and gas industry, has approved the information contained in this announcement. Mr Sanderson is a Fellow of the Geological Society of London and is an active member of the American Association of Petroleum Geologists.

For further information please contact:

UK Oil & Gas Investments PLC

Stephen Sanderson / Jason Berry Tel: 020 7440 0640

WH Ireland (Nominated Adviser and Broker)

James Joyce / Mark Leonard Tel: 020 7220 1666

Square 1 Consulting (Public Relations)

David Bick / Mark Longson / Brian Alexander Tel: 020 7929 5599

Glossary:

 
 contingent resources    contingent resources are those quantities of 
                          petroleum estimated, as of a given date, to 
                          be potentially recoverable from known accumulations, 
                          but the applied project(s) are not yet considered 
                          mature enough for commercial development due 
                          to one or more contingencies. Contingent resources 
                          may include, for example, projects for which 
                          there are currently no viable markets, or where 
                          commercial recovery is dependent on technology 
                          under development, or where evaluation of the 
                          accumulation is insufficient to clearly assess 
                          commerciality. Contingent resources are further 
                          categorized in accordance with the level of 
                          certainty associated with the estimates and 
                          may be sub-classified based on project maturity 
                          and/or characterised by their economic status 
----------------------  ------------------------------------------------------ 
 core                    a continuous cylindrical sample of rock from 
                          the wellbore normally taken in 30 ft sections 
----------------------  ------------------------------------------------------ 
 cuttings                small rock fragments of less than a few millimetres 
                          diameter removed from a borehole drilled by 
                          rotary drilling an conveyed to the surface 
                          in drilling mud 
----------------------  ------------------------------------------------------ 
 DECC                    UK Government Department of Energy and Climate 
                          Change 
----------------------  ------------------------------------------------------ 
 electric logs           tools used within the wellbore to measure the 
                          rock and fluid properties of surrounding rock 
                          formations 
----------------------  ------------------------------------------------------ 
 flow test               a flow test or well test involves testing a 
                          well by flowing hydrocarbons to surface, typically 
                          through a test separator. Key measured parameters 
                          are oil and gas flow rates, downhole pressure 
                          and surface pressure. The overall objective 
                          is to identify the well's capacity to produce 
                          hydrocarbons at a commercial flow rate 
----------------------  ------------------------------------------------------ 
 gross oil in place      100% of oil in place, without taking into account 
                          the Company's ownership interest 
----------------------  ------------------------------------------------------ 
 Jurassic Tight          the three plays, or petroleum systems, contained 
  Oil                     within the source rock shale sequences and 
                          interbedded tight limestones of the Kimmeridge 
                          Clay, Oxford Clay and Lias Formations 
----------------------  ------------------------------------------------------ 
 moveable oil            oil that can flow and potentially be extracted 
                          via wells 
----------------------  ------------------------------------------------------ 
 limestone               a sedimentary rock predominantly composed of 
                          calcite (a crystalline mineral form of calcium 
                          carbonate) of organic, chemical or detrital 
                          origin. Minor amounts of dolomite, chert and 
                          clay are common in limestones. Chalk is a form 
                          of fine-grained limestone 
----------------------  ------------------------------------------------------ 
 net oil in place        the Company's economic interest in oil in place, 
                          taking account of the Company's ownership interest 
                          in each of the eight licences located in the 
                          AOI 
----------------------  ------------------------------------------------------ 
 OGA                     UK Oil & Gas Authority 
----------------------  ------------------------------------------------------ 
 oil in place or         the quantity of oil or petroleum that is estimated 
  stock tank oil          to exist originally in naturally occurring 
  in place                accumulations before any extraction or production 
----------------------  ------------------------------------------------------ 
 P10 ("high estimate")   a 10% probability that a stated volume will 
                          be equalled or exceeded 
----------------------  ------------------------------------------------------ 
 P50 ("best estimate")   a 50% probability that a stated volume will 
                          be equalled or exceeded 
----------------------  ------------------------------------------------------ 
 P90 ("low estimate")    a 90% probability that a stated volume will 
                          be equalled or exceeded 
----------------------  ------------------------------------------------------ 
 play                    a set of known or postulated oil and or gas 
                          accumulations sharing similar geologic, geographic, 
                          and temporal properties, such as source rock, 
                          migration pathways, timing, trapping mechanism, 
                          and hydrocarbon type 
----------------------  ------------------------------------------------------ 
 petrophysics            the study of physical and chemical rock properties 
                          and their interactions with fluids utilising 
                          electric logs, physical rock and fluid measurements 
----------------------  ------------------------------------------------------ 
 prospective resources   those quantities of petroleum estimated, as 
                          of a given date, to be potentially recoverable 
                          from undiscovered accumulations by application 
                          of future development projects. Prospective 
                          resources have both an associated chance of 
                          discovery and chance of development 
----------------------  ------------------------------------------------------ 
 recoverable resources   those quantities of petroleum (oil in this 
                          case) estimated, as of a given date, to be 
                          potentially recoverable from known accumulations 
----------------------  ------------------------------------------------------ 
 reserves                those quantities of petroleum anticipated to 
                          be commercially recoverable by application 
                          of development projects to known accumulations 
                          from a given date forward under defined conditions; 
                          reserves must further satisfy four criteria: 
                          they must be discovered, recoverable, commercial 
                          and remaining (as of the evaluation date) based 
                          on the development project(s) applied; reserves 
                          are further categorized in accordance with 
                          the level of certainty associated with the 
                          estimates and may be sub-classified based on 
                          project maturity and/or characterised by development 
                          and production status 
----------------------  ------------------------------------------------------ 
 reservoir               a subsurface rock formation containing an individual 
                          natural accumulation of moveable petroleum 
----------------------  ------------------------------------------------------ 
 shale                   a laminated and fissile very fine-grained sedimentary 
                          rock, consisting of compacted silt and clay-size 
                          mineral particles. Can contain high proportions 
                          of organic material, which if subjected to 
                          heat and pressure over geological time can 
                          generate petroleum (a petroleum source rock) 
----------------------  ------------------------------------------------------ 
 source rock             a rock rich in organic matter which, if subjected 
                          to sufficient heat and pressure over geological 
                          time, will generate oil or gas. Typical source 
                          rocks, usually shale or limestone, contain 
                          above an initial 1% organic matter by weight 
----------------------  ------------------------------------------------------ 
 stochastic              an analysis of a dataset that uses a large 

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                          number of randomly determined observations, 
                          each of which conforms to the overall probability 
                          distribution of the dataset 
----------------------  ------------------------------------------------------ 
 tight reservoir         a term normally applied to reservoirs, either 
  or tight rock           sandstones, limestones, shales or mudstones, 
                          with a measured average permeability of less 
                          than 1 milliDarcy 
----------------------  ------------------------------------------------------ 
 tight oil               oil found or expected to be present within 
                          a reservoir with low permeability, i.e. a tight 
                          reservoir. The term, in the case of the Weald 
                          Tight Oil Plays, is applied to a play where 
                          trapped petroleum accumulations are expected 
                          to be pervasive throughout a large area and 
                          that are not significantly affected by hydrodynamic 
                          influences (also called "continuous-type deposits") 
----------------------  ------------------------------------------------------ 
 Thermal                 Measure of the combined effects of heating 
  maturity                (generally due to burial) and geological time, 
                          and which controls the conversion of organic 
                          matter in a source rock into oil and/or gas 
----------------------  ------------------------------------------------------ 
 Total Petroleum         the quantity of petroleum which is estimated 
  Initially In Place      to exist originally in naturally occurring 
                          accumulations. Therefore, the quantity of petroleum 
                          that is estimated, on a given date, to be contained 
                          in known accumulations, plus those quantities 
                          already produced from those accumulations, 
                          plus those estimated quantities in accumulations 
                          yet to be discovered 
----------------------  ------------------------------------------------------ 
 total organic           the weight percent amount of organic carbon 
  carbon (TOC)            within the rock which is a commonly used measure 
                          of hydrocarbon source rock richness 
----------------------  ------------------------------------------------------ 
 well stimulation        a well intervention performed on an oil or 
                          gas well to increase production by improving 
                          the flow of hydrocarbons from the drainage 
                          area into the well bore. 
----------------------  ------------------------------------------------------ 
 

Notes to Editors:

About Nutech

Nutech, one of the world's leading companies in petrophysical analysis and reservoir intelligence, has played a major role in guiding the development of the United States unconventional resource revolution observed in the past 16 years. Nutech has extensive experience in US tight oil and gas plays and many key basins globally. Nutech are one of only four companies approved by the UK Government (OGA) to handle the sale, release and further analysis of the UK's onshore well database. Nutech's client base includes the governments of Mexico, Bahrain, Pakistan, The Netherlands, Poland, and Colombia, as well as oil and gas majors and large independents, which include Petronas, Chevron, Repsol, ConocoPhillips, BP, GDF, Devon, and SandRidge. Further information is available at www.nutechenergy.com.

UKOG's Licence Interests

The Company's UK licence interests are shown below in Table 2. The three licences outside the AOI are Lidsey, Offshore Isle of Wight and Onshore Isle of Wight (pending OGA award).

Table 2 - UKOG's Licence Interests

 
Asset          Licence     UKOG's      Licence       Operator      Area             Status             Current 
                           Interest     Holder                     (km(2)                              Licence 
                                                                     )                              Period Expiry 
             -----------  ---------  ------------  ------------  ---------  ----------------------  -------------- 
Licences in the AOI 
------------------------------------------------------------------------------------------------------------------ 
                                                                            Field in 
Avington                              UKOG (GB)    IGas Energy               stable                 31 December 
 (1)           PEDL070       5%         Limited         Plc        18.3      production.             2017 
-----------  -----------  ---------  ------------  ------------  ---------  ----------------------  -------------- 
                                                                            Reviewing 
                                                                             economics 
                                                                             of appraisal/ 
Baxters                               UKOG Weald   IGas Energy               development 
 Copse (2)     PEDL233       50%        Limited         Plc        89.6      well.                  30 June 2016 
-----------  -----------  ---------  ------------  ------------  ---------  ----------------------  -------------- 
                                                                            Drilling 
                                                      Angus                  of sidetrack 
Brockham                             Angus Energy     Energy                 well being             27 October 
 (1)            PL234       3.6%          (5)           (5)         8.9      considered.             2017 
-----------  -----------  ---------  ------------  ------------  ---------  ----------------------  -------------- 
                                                                            Awaiting 
                                                      Europa                 OGA consent 
                                                     Oil & Gas               to farm-in, 
Holmwood                                            (Holdings)               exploration            30 September 
 (3)           PEDL143       20%         UKOG           plc        91.8      well planned.           2016 
-----------  -----------  ---------  ------------  ------------  ---------  ----------------------  -------------- 
                                                                            Field in 
Horndean                              UKOG (GB)    IGas Energy               stable                 31 December 
 (1)            PL211        10%        Limited         Plc        27.3      production.             2015 
-----------  -----------  ---------  ------------  ------------  ---------  ----------------------  -------------- 
                                                                            Flow testing 
                                                                             of HH-1 
                                                                             planned, 
                                      Horse Hill    Horse Hill               awaiting 
Horse Hill                           Developments  Developments              regulatory             30 September 
 (4)           PEDL137     20.358%     Ltd (6)       Ltd (6)       99.3      approvals.              2016 
                                                                 ---------  ----------------------  -------------- 
                                                                            Flow testing 
                                                                             of HH-1 
                                                                             planned, 
                                      Horse Hill    Horse Hill               awaiting 
Horse Hill                           Developments  Developments              regulatory 
 (4)           PEDL246     20.358%     Ltd (6)       Ltd (6)       43.6      approvals.             30 June 2019 
-----------  -----------  ---------  ------------  ------------  ---------  ----------------------  -------------- 
                                                                            Compiling 
Markwells                             UKOG (GB)     UKOG (GB)                Field Development      30 September 
 Wood (2)      PEDL126      100%        Limited       Limited      11.2      Plan.                   2016 
-----------  -----------  ---------  ------------  ------------  ---------  ----------------------  -------------- 
Licences Outside the AOI 
------------------------------------------------------------------------------------------------------------------ 
                                                                            Awaiting 
Isle of                                                                      14th Round, 
 Wight                                                                       UKOG adjacent 
 (Offshore)                          UKOG Solent   UKOG Solent               onshore                31 January 
 (3, 7)         P1916       77.5%       Limited       Limited      46.7      acreage.                2017 
----------- 
Isle of      14th Round      TBA         TBA           TBA         200.0    Subject                 TBA 
Wight                                                                        to 14th 
(Onshore)                                                                    Round awards. 
(3, 7) 
-----------  -----------  ---------  ------------  ------------  ---------  ----------------------  -------------- 
                                                                            Drilling 
                                                                             of infill 

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