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Leni strikes oil at Goudron field in Trinidad

07th May 2014

Leni Gas and Oil announced yesterday that the first new development well in the Goudron Field, GY-664, successfully reached a depth of 512 metres at 7am (Trinidad) on 3 May 2014, and after logging and casing was reported to be drilling ahead midnight (Trinidad) on 5 May 2014

Leni strikes oil at Goudron field in Trinidad
The first casing point was deepened from an anticipated depth of 469 metres to 512 metres due to the well encountering a thicker than expected section of oil bearing Goudron Sands. The first 512 metres of well has now been successful cased and cemented with 9 5/8 inch steel casing.

A full suite of conventional electric logs have been run to 512 metres and initial analysis of those logs confirms the presence of over 100 metres of hydrocarbon bearing Goudron Sands.

Neil Ritson, LGO Chief Executive, commented: "Excellent progress is being made with the first of our 30 well development campaign.  Extensive oil bearing Goudron Sands have been encountered and the well has been successfully logged and cased and we are now drilling ahead to the main objectives."

The first casing point was deepened from an anticipated depth of 469 metres to 512 metres due to the well encountering a thicker than expected section of oil bearing Goudron Sands. The first 512 metres of well has now been successful cased and cemented with 9 5/8 inch steel casing.

Drilling is now continuing with an 8 1/2 inch hole section to a planned total depth of approximately 1,219 metres in order to test the primary objectives in the Gros Morne and the Lower Cruse Sands at depths below 853 metres.

 

Goudron Field Background

To date the Goudron Field has been developed through a total of 154 wells drilled between 1927 and 1982 of which about 128 have given material production at either the Goudron or Lower Cruse levels, or both.   Only 11 wells have previously been completed at the Lower Cruse reservoir and these have achieved an average production of 63,200 barrels per well.  A total of 1.64 mmbbls have been recovered from the Lower Cruse, representing a very modest recovery factor of just three per cent.

No wells have been drilled at Goudron since 1982 and wells drilled prior to that date did not benefit from modern instrumentation and mud conditioning techniques and this invariably, in the past, led to significant formation damage and resulting reduced production potential.  It is expected that the drilling practices and perforating guns, being employed during the present campaign, will provide far better production performance.

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