SOCO International’s Congo-Brazzaville well tests ‘exceed expectations’

offshore-congoSOCO International holds a 40.39 per cent interest in the Marine XI Block. (Image source: Icethorn/Wikimedia Commons)SOCO International has announced that its Lidongo Marine 101 ST1 exploration well, located offshore Congo-Brazzaville, has ‘significantly exceeded’ expectations

The well produced 5,174 bpd and 103,356 cu/m of gas per day during testing, the UK-headquartered company said.

The firm had previously said that the well at the Marine XI Block, some 22.5 km northwest of Pointe Noire and in water depth of 45.7 metres, encountered oil in a clastics sequence in the Djeno sand formation after being drilled to a total depth of 2,665 metres.

Drilling shows and early log interpretation indicated a gross interval of approximately 50 metres. The test, over a perforated 20-metre section, produced at a stable average flow rate of 4,800 bpd and 99,109 cu/m of gas per day on a 56/64-inch choke, with a flowing wellhead pressure of 352 kg per square inch, following the execution of a stimulation frac.

The quality of the oil was 32º API. SOCO International said the well results will now be analysed in order to determine the continuity of the well with a nearby discovery in the Marine XII Block.

SOCO International holds a 40.39 per cent interest in the Marine XI Block. Its project partners include WNR with a 23 per cent interest, SNPC with 15 per cent, AOGC holding 13.11 per cent and PetroVietnam Exploration and Production owning 8.5 per cent.

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