Oil prosp[ecting company Tullow Oil has announced that the Jobi-East-1 and Mpyo-3 wells, in Exploration Area 1 (EA1) onshore Uganda, have both successfully encountered oil in line with pre-drill expectations.
The company in a press statement says these wells have successfully calibrated large seismic and gravity data anomalies, which have now been proven as oil accumulations.
Jobi-East-1 has discovered 20 metres of net hydrocarbon bearing reservoir in a fault block adjacent to the giant Jobi-Rii oil field. “The well was drilled 4.4 kilometres east of the Jobi-1 discovery well in a down-dip location. Successful logging and sampling operations have confirmed the presence of oil in two zones of high quality reservoir totalling 15 metres of net pay. In addition, gas has also been logged and sampled within sands totalling 5 metres of net pay,” the company said in the statement.
Tullow Oil Uganda which recently resumed oil drilling campaign in Uganda oil rich Albertine Graben says well was drilled by the OGEC RR600 and reached a total depth of 563 metres. The well has been suspended allowing for future re-entry to conduct production testing operations. An accelerated drilling campaign comprising up to four Jobi-East appraisal wells is planned for the second half of 2011 to assess the full extent of this important new oil accumulation.
“The Jobi-East-1 and Mpyo-3 well results mark an excellent start to this next phase of our exploration and appraisal campaign in the Lake Albert Rift Basin. We look forward to many more exciting wells as we endeavour to determine the total oil resource base which will underpin the basin-wide development preparations currently in progress,” says Angus McCoss, Tullow Oil Exploration Director.
The Mpyo-3 well has intersected 21 metres of oil bearing reservoir sands at a depth of 340 metres. The well was drilled 1.6 kilometres southeast of Mpyo-1 in a down-dip location within a fault block adjacent to the Mpyo-1 discovery. Successful logging operations confirmed the sands to be of good quality and that they contain highly viscous oil similar to that encountered in Mpyo-1.
The well was drilled by the OGEC IRI-750 to a total depth of 513 metres and was suspended allowing for future re-entry to conduct production testing operations.
Subject to completion of the farm-down, Tullow will have a 33.33% interest in the EA1 licence and its partners will be Total 33.33% and CNOOC 33.33%. Tullow is currently acting as interim operator for the licence until Sept 2011.
Ultimate media