Northern Petroleum confirms oil at Markwells Wood-I

Northern Petroleum Plc, has announced that assessment of the logs has confirmed that the entire Great Oolite drilled reservoir sequence in Markwells Wood-I is oil bearing above the Horndean Field oil water contact of 4446 ft sub-sea level, meeting the primary objective.

The presence of mobile oil was observed when the 30 ft of core was extracted from the well. Initial analysis of the logs indicate the well, which was deviated at an inclination of approximately 56° through the Great Oolite, penetrated a gross hydrocarbon bearing interval of 275 ft with a calculated net reservoir of 192 ft with an average porosity of 13 - 14%, a typical porosity value for this reservoir in the nearby fields in the same formation.

Derek Musgrove, Managing Director of Northern, commented: "The Markwells Wood-I well has to date presented us with encouraging results. An oil bearing sequence has been encountered in the target reservoir adjacent to the producing Horndean oil field within its mapped structural closure. Detailed analysis of the core and logs will provide information on reservoir quality. Expected production rates will be derived from the future test programme."

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