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Horse Hill Oil Field: HH-2z Horizontal Update

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RNS Number : 0646S
UK Oil & Gas PLC
04 November 2019
 

UK Oil & Gas PLC

("UKOG" or the "Company")

 

Horse Hill Oil Field: HH-2z Horizontal Update

 

UK Oil & Gas PLC (London AIM: UKOG) is pleased to announce that its Horse Hill-2z ("HH-2z") Portland horizontal well (UKOG 85.635% net controlling interest) has, to date, successfully drilled 2,016 ft wholly within the Portland reservoir's most oil productive zone or "sweet spot", the presence and quality of which was defined by the HH-2 pilot well's successful coring and electric logging programmes.

 

Following the fitting of a new rig engine, expected to be completed over the coming days, the remaining 1,200 ft of the planned circa 3,200 ft horizontal section within the "sweet-spot" will be drilled. Horizontal drilling is expected to be completed by mid-November.

 

Drilling data indicates that sections of possible increased reservoir quality over that seen in HH-1 and HH-2 have been encountered within the sweet-spot. Furthermore, mud weights indicate that the horizontal may lie within a reservoir zone that is less pressure depleted by HH-1 oil production than expected. A comprehensive electric logging and extended well test ("EWT") programme will further clarify these potentially positive outcomes.

 

HH-2/2z, the first horizontal well in the field's Portland oil pool, is designed to be retained as a future production well, capable of delivering flow rates significantly higher than the previously reported 362 barrels of oil per day from the HH-1 vertical Portland discovery well.

 

HH-2z Operations

 

After cementing the 7-inch diameter casing down to 2373 ft, the well drilled ahead in 6-inch diameter hole, encountering the top Portland sandstone at a drilled depth below rig floor of 2389 ft, some 850 ft laterally southeast of the HH-2 surface location.

 

The well's 6-inch hole trajectory was increased from around 70° to vertical at the 7-inch casing shoe to its current 88°-90° to vertical, approximately parallel to the geological dip of the Portland. Electric logging tools close to the drilling bit together with rock cuttings have enabled the trajectory to be kept within an overall 35 ft thick section containing the highest permeability reservoir zones.

 

After reaching its total drilled depth, HH-2z will then be completed with production tubing and a downhole electric pump or "ESP" prior to a clean-up programme and extensive EWT campaign.

 

UKOG holds a controlling 85.635% interest in the Horse Hill oil field and surrounding highly prospective PEDL137 and PEDL246 licences, which are operated by UKOG's subsidiary company, Horse Hill Developments Ltd.

 

Stephen Sanderson, UKOG's Chief Executive, commented:

 

"We have successfully delivered around two thirds of the planned horizontal section within the Portland reservoir's sweet-spot, a 35 ft zone containing the most productive, porous and permeable sandstones. Keeping within this zone is no mean feat and is a testament to the meticulous preparation and skill of our geologists and directional drillers. We remain on schedule to complete drilling the full trajectory around the middle of November, and will then immediately complete, clean-up and flow test the well."

 

Qualified Person's Statement

 

Matt Cartwright, UKOG's Commercial Director, who has over 36 years of relevant experience in the global oil industry, has approved the information contained in this announcement. Mr Cartwright is a Chartered Engineer and member of the Society of Petroleum Engineers.

 

For further information, please contact:

 

UK Oil & Gas PLC

Stephen Sanderson / Kiran Morzaria                                                      Tel: 01483 900582

 

WH Ireland Ltd (Nominated Adviser and Broker)

James Joyce / James Sinclair-Ford                                                           Tel: 020 7220 1666

 

Cenkos Securities PLC (Joint Broker)

Joe Nally / Neil McDonald                                                                         Tel: 0207 397 8919

 

Novum Securities (Joint Broker)                                                                                                              

John Bellis                                                                                                     Tel: 020 7399 9400

 

Public Relations

Brian Alexander                                                                                            Tel: 01483 900582

 

Glossary

 

 

coring

a drilling technique that involves using a doughnut-shaped drilling bit to capture or "cut" a continuous cylinder-shaped sample of 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 with a diameter of 3-4.5 inches. Core is taken in petroleum reservoir rocks for detailed laboratory analyses of geological, geochemical petrophysical and geomechanical properties

horizontal well

a well that during drilling is steered so as to follow and remain within a particular geological stratum or reservoir unit having a trajectory that runs  approximately parallel to the top and or base of the target horizon

oil field

an accumulation, pool or group of pools of oil in the subsurface that produces oil to surface

well test

or flow 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 and volumes.

 

UKOG Licence Interests

 

The Company has interests in the following UK licences:

 

Asset

Licence

UKOG Interest

Licence Holder

Operator

Area (km2)

Status

Avington 1

PEDL070

5%

UKOG (GB) Limited

IGas Energy Plc

18.3

Field currently temporarily shut in

Broadford Bridge/Loxley/Godley Bridge 2, 3, 8

PEDL234

100%

UKOG (234) Ltd 4

UKOG (234) Ltd 4

300.0

BB-1/1z oil discovery, Loxley-1 gas appraisal well planning application submitted

A24 3

PEDL143

67.5%

UKOG

UKOG 7

91.8

Finalising new site selection to drill Portland and Kimmeridge prospects

Horndean 1

PL211

10%

UKOG (GB) Limited

IGas Energy Plc

27.3

Field in stable production

Horse Hill 5

PEDL137

85.635%

Horse Hill Developments Ltd 

Horse Hill Developments Ltd 

99.3

Production tests ongoing, HH-2/2z drilling

Horse Hill 5

PEDL246

85.635%

Horse Hill Developments Ltd 

Horse Hill Developments Ltd 

43.6

As above

Isle of Wight (Onshore) 2, 3

PEDL331

95%

UKOG

UKOG

200.0

Preparing planning submission for Arreton-3 oil appraisal well and Arreton South exploration well

Markwells Wood

PEDL126

100%

UKOG (GB) Limited

UKOG (GB) Limited

11.2

MW-1 P&A

               

Notes:

 

1.  Oil field currently in stable production.

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

3.  Exploration asset with drillable prospects and leads.

4.  Contains the Broadford Bridge-1/1z Kimmeridge oil discovery, the eastern extension of the Godley Bridge Portland gas discovery, plus further undrilled Kimmeridge exploration prospects.

5.  Portland and Kimmeridge Oil field with productive and commercially viable zones, EWT ongoing, production planning consent granted in September 2019, appraisal/development drilling campaign underway. Long term production start expected late 2019.

6.  UKOG has a direct 77.9% interest in HHDL, which has a 65% interest in PEDL137 and PEDL246.

7.  OGA consent received for the transfer of operatorship from Europa to UKOG

8.  Gas discovery pending appraisal drilling and development with underlying Kimmeridge potential

 

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

 

 

 

 


This information is provided by RNS, the news service of the London Stock Exchange. RNS is approved by the Financial Conduct Authority to act as a Primary Information Provider in the United Kingdom. Terms and conditions relating to the use and distribution of this information may apply. For further information, please contact [email protected] or visit www.rns.com.
 
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