SOCO International announced that the Lideka East Marine-1 well (LDKEM-1) off Congo, which targeted a post-salt structure, updip from the Lideka Marine-1 well, found shows of oil in the Sendji formation (iS3). The well encountered about 50m of net pay section in the Upper and Lower Sendji, of which about 30m of net pay is within the targeted iS3 and S4 horizons.
The LDKEM-1 well was tested over a 20m interval in the iS3 and S4 horizons. The well flowed 30-35° API oil at a sustained rate of 350bo/d, with base, sediment and water around 1%, in line with predictions from the petrophysical analysis. Produced gas volumes were very low.
The well was drilled on the crest of the structure to identify the oil column length. The Sendji is known to be a heterogeneous reservoir, and detailed rock physics and inversion models will be needed to determine where the best porosity zones are situated. The oil water contact was not well defined in the exploration well, and an “oil down to” shale barrier could present upside. Further work will be conducted to establish viable opportunities on this field.
Ed Story, president and chief executive of SOCO, commented: “The results from the Lideka Marine East well, while not as good as we had hoped, are in line with that seen in regional analogs like the Yombo and Sendji Fields. The sharply contrasting reservoir characteristics within these fields are indicative of changes that could be present at our Lideka discovery. Additional interpretive work will help to establish the location of potential higher productive areas in Lideka and assist in our evaluation towards commerciality.”
SOCO holds its interests in the Congo (Brazzaville) through its 85% owned subsidiary, SOCO Exploration and Production Congo SA (SOCO EPC). SOCO EPC holds a 40.39% interest in the Marine XI Block in the shallow water Lower Congo Basin and is designated block operator.
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