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Thursday, September 26, 2013
The Lideka East Marine-1 well (LDKEM-1) offshore the Republic of Congo (ROC) hit hydrocarbons while drilling according to a release from Soco International. The well is targeting a post-salt structure, up-dip from the LDKEM-1 well which found shows of oil in the Sendji Formation (iS3).
The LDKEM-1 encountered approximately 50 meters of net pay section in the Upper and Lower Sendji, of which approximately 30 meters of net pay are within the targeted iS3 and S4 horizons. The LDKEM-1 well was tested over a 20-meter interval in the iS3 and S4 horizons. The well flowed at a sustained rate of 350 bpd, 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 length of the oil column. The Sendji is known to be a heterogeneous reservoir, and detailed rock physics and inversion models will need to be used 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 said, “The results from the Lideka Marine East well, while not as good as we had hoped, are in line with that seen in regional analogues 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.”
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