Tullow Oil, an independent oil and gas company, has announced that it has successfully encountered oil in very good quality sandstone reservoirs in the Enyenra-4A appraisal well, in the Deepwater Tano licence offshore Ghana.

According to Tullow, results of drilling, wireline logs, samples of reservoir fluids and pressure data showed that Enyenra-4A has intersected 32 metres of net oil pay. Oil leg pressure data showed that the oil is in static communication with the oil seen in the other wells in the field and indicate a continuous oil column of approximately 600 metres.
Excellent evidence of communication with the Owo-1 discovery wells and the Enyenra appraisal wells proves the important scope of the Enyenra light oil field, added the company.

While commenting on the success, Angus McCoss, Exploration Director, said: "This bold step out is an excellent result which is further enhanced by the quality and thickness of the reservoirs found at this downdip location. Proving a 600m oil column over a distance of 21km with three appraisal wells is a significant achievement which was only possible through the use of highly refined geophysical techniques. The appraisal of the Enyenra field will now continue with the monitoring of the pressure gauges deployed in several wells to determine the level of dynamic connectivity within the system and to further refine the estimates of oil in place."