Springfield Exploration and Production (SEP) Limited and its Partners, Ghana National Petroleum Corporation (GNPC) and GNPC EXPLORCO, have announced the successful completion of the appraisal well test activity of the Afina discovery by a re-entry of the well.
Afina-1x drilled in 2019 is located at a water depth of 1,030 metres and was drilled to a total depth of 4,085 metres.
It encountered light oil with a gross thickness of 65 metres, with 50 metres light net oil pay in good quality Cenomanian sandstones.
The secondary target drilled at the edge of the structure and contained in Turonian age sands encountered 10 metres of hydrocarbon-bearing sands consisting of gas/condensate.
The Afina-1x Drill Stem Test (DST) carried out on the Cenomanian sandstone flowed at a maximum rate of 4,500 barrels of oil per day confirming good reservouir productivity on the upper end of pre-test expectations.
Pressure transient analysis also indicates reservouir pressure depletion at the reservouir level as compared to 2019 pressures indicating depletion through production.
A mini-DST conducted on the Turonian sandstone confirmed the presence of gas/condensate and indicated an estimated flow rate potential of up to 12,000 Barrels of oil equivalent per day (boepd).
Pressure transient analysis from this reservouir showed the pressures consistent with the pressures collected in 2019.
The Deepsea Bollsta was released November 22, 2024 at midday and it set sail from Ghanaian waters the next day at 2:30 pm.
Springfield E&P contracted the Deepsea Bollsta rig, a semi-submersible being managed by Odfjell Drilling Limited, to appraise the well following a July 8, 2024 ruling by the International Court of Arbitration that mandated Springfield to conduct additional work to complete the unitisation process.
The Tribunal, adjudicating between the government and Eni Ghana Exploration and Production and Vitol Energy, declared that the government was well within its rights under the laws of Ghana to issue an unitisation directive.
However, some further works needed to be executed for unitisation to be completed.
The tribunal specified a maximum of six months for the unitisation to be completed, once the work was completed.
Commenting on the successful appraisal in Accra yesterday, the Chief Executive Officer of Springfield, Kevin Okyere, said, “We are extremely happy with the results of the appraisal programme which has further confirmed our understanding of our geological, geophysical, reservouir models and demonstrated our operational capacity.”
He said,”Afina-1x is a vertical well, we are confident that a horizontal well or other well completion options that maximise reservouir exposure in the fields would deliver much higher production rates. This provides an incredible platform for reaffirming commercial development options for the Cenomanian and Turonian reservouirs. I would like to take this opportunity to thank the Springfield team and Northern Ocean’s Deepsea Bollsta crew and all service partners for conducting this activity safely and on schedule.”
BY DAVID ADADEVOH
