Source - RNS
RNS Number : 5306I
UK Oil & Gas Investments PLC
20 June 2017


UK Oil & Gas Investments PLC

("UKOG" or the "Company")


Drilling Update at 100% Owned Broadford Bridge-1 Kimmeridge Exploration Well

PEDL234 Licence, Weald Basin, UK


UK Oil & Gas Investments PLC (London AIM and NEX: UKOG) announces that it has now commenced conventional coring operations at its 100% interest Broadford Bridge-1 ("BB-1") exploration well. The first coring point was called at a measured depth of 4013 feet (1223 metres) situated just above Kimmeridge Limestone 4 ("KL4"), the first reservoir target.  Downhole natural gas levels increased steadily throughout the Kimmeridge section, with the onset of wet gas shows (butane and pentane) just above the coring point. When recovered to surface, the 100 ft cores will be transported to Aberdeen for initial rock sampling. Extensive geological, petrophysical and geo-mechanical analyses will be carried out in the UK and USA. BB-1 remains under budget and on schedule.



About BB-1


BB-1 is located near Billingshurst, West Sussex, within the 300 km² PEDL234 licence, in which the Company has a 100% interest via its ownership of the licence's operator, Kimmeridge Oil & Gas Limited. The well, an exploration step-out, is designed to penetrate four naturally fractured Kimmeridge Limestone units (KL1-KL4), the uppermost two units of which flowed at record rates in the Company's Horse Hill-1 discovery near Gatwick Airport. 


The forward plan is to core the KL4 and KL3 target zones and then continue to drill 8½ diameter hole at a constant inclination of 54 degrees to vertical. Further core may be taken in KL2. The well azimuth, approximately north-northeast of the well site, is designed to be at approximately 90 degrees to the predicted orientation of open natural fractures in the KL1-KL4 reservoir section. The planned overall horizontal deviation of the well is approximately 1 km. The Kimmeridge Limestones are expected to be encountered at a drilled depth of approximately 1250-1700 metres, which equates to around 950-1200 metres vertically below surface.



Qualified Person's Statement


Stephen Sanderson, UKOG's Executive Chairman, who has over 35 years of relevant experience in the oil 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 / Kiran Morzaria                                     Tel: 01483 243450 


WH Ireland (Nominated Adviser and Broker)

James Joyce / James Bavister                                                   Tel: 020 7220 1666


Cenkos Securities PLC (Joint Broker)

Nick Tulloch / Neil McDonald                                                   Tel: 0131 220 6939


Square 1 Consulting (Public Relations)

Brian Alexander / David Bick                                                    Tel: 01483 243450 / 020 7929 5599




heavy gauge steel tubing designed to line the wall of a well. The casing provides a safe controlled space in which the drill pipe and bit can operate in isolation from conditions in overlying rock units. The steel tubing is bonded to the surrounding rock by impermeable concrete, known as "cement".

core or coring

a drilling technique that involves using a doughnut-shaped drilling bit to capture or "cut" a continuous cylinder-shaped core of undamaged in-situ rock. The core is captured in a steel pipe or "core barrel" above the bit. Core is normally cut in 30 feet lengths, or multiples of 30 feet, and normally with a diameter of 3.5 or 4 inches. Core is taken in petroleum reservoir rocks for detailed laboratory analyses of petrophysical and geomechanical parameters.


a discovery is a petroleum accumulation for which one or several exploratory wells have established through testing, sampling and/or logging the existence of a significant quantity of potentially moveable hydrocarbons


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

naturally fractured reservoir

a fractured reservoir contains open and usually connected cracks or fissures within the rock matrix; fractures can enhance permeability of rocks greatly by connecting pore-spaces together; naturally fractured reservoirs have been created over geological time by nature, not man-made via hydraulic fracturing

step-out well

a well specifically designed to determine the lateral extent of a discovered hydrocarbon accumulation or play.

wet gas

natural gas, predominantly consisting of methane(C1), ethane(C2) and propane (C3) but also containing the longer molecular chain natural gases butane & iso butane (C4), pentane & iso-pentane (C5). The C4 and C5 gases are created during oil-generation within a petroleum source rock unit when oil is thermally cracked. At Horse Hill these natural gases lie in solution with the oil in the KL3 and KL4 Kimmeridge Limestone reservoirs (i.e. solution or associated gas and not as a separate free-gas phase).


UKOG Licence Interests


The Company has interests in the following ten UK licences:



UKOG's Interest

Licence Holder


Area (km2)


Avington 1



UKOG (GB) Limited

IGas Energy Plc


Field in stable production

Baxters Copse 2



UKOG Weald Limited

IGas Energy Plc


Appraisal/development well planned; licence extended to 2018

Broadford Bridge 3



Kimmeridge Oil & Gas Limited 4

Kimmeridge Oil & Gas Limited 4


BB-1 drilling underway

Holmwood 3




Europa Oil & Gas (Holdings) plc


Holmwood-1 exploration well planned in 2017

Horndean 1



UKOG (GB) Limited

IGas Energy Plc


Field in stable production

Horse Hill 5



Horse Hill Developments Ltd 

Horse Hill Developments Ltd 


Submitted planning application for long term production tests and drilling of two wells

Horse Hill 5



Horse Hill Developments Ltd

Horse Hill Developments Ltd 


As above

Isle of Wight (Offshore) 3



UKOG Solent Limited

UKOG Solent Limited


Preparing drilling planning submission

Isle of Wight (Onshore) 2, 3






Preparing drilling planning submission

Markwells Wood 2



UKOG (GB) Limited

UKOG (GB) Limited


Submitted planning application for appraisal and field development



1. Oil field currently in production.

2. Oil discovery pending development and/or appraisal drilling.

3. Exploration asset with drillable prospects and leads. Contains the extension of the Godley Bridge Portland gas discovery and the site of the forthcoming Broadford Bridge-1 well.

4. UKOG has a 100% interest in Kimmeridge Oil & Gas Limited, which has a 100% interest in PEDL234.

5. Oil discovery with recently completed flow testing.

6. UKOG has a direct 48% interest in HHDL, which has a 65% interest in PEDL137 and PEDL246.


The information contained within this announcement is deemed by the Company to constitute inside information under the Market Abuse Regulation (EU) No. 596/2014.


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