Springfield Exploration and Production (SEP) Limited, in collaboration with the Ghana National Petroleum Corporation (GNPC) and GNPC EXPLORCO, has successfully completed the appraisal well test of the Afina discovery through a re-entry of the well.
The Afina-1x Drill Stem Test (DST) conducted on the Cenomanian sandstone flowed at a maximum rate of 4,500 barrels of oil per day, surpassing pre-test expectations and confirming the reservoir’s strong productivity.
Pressure transient analysis indicated reservoir pressure depletion, suggesting production-driven depletion since 2019.
Additionally, a mini-DST on the Turonian sandstone confirmed the presence of gas/condensate, with an estimated flow rate potential of up to 12,000 barrels of oil equivalent per day (boepd). The pressure readings from this reservoir were consistent with those recorded in 2019.
The Afina-1x well, drilled in 2019 at a water depth of 1,030 meters and a total depth of 4,085 meters, encountered 65 meters of gross thickness, with 50 meters of light net oil pay in high-quality Cenomanian sandstones.
The secondary target, at the edge of the structure in Turonian sands, found 10 meters of hydrocarbon-bearing sands, consisting of gas/condensate.
The successful appraisal further cements Springfield’s position as the first independent Ghanaian and African energy company to operate a deep-water asset and achieve hydrocarbon discoveries. The Deepsea Bollsta vessel was released from Ghanaian waters on November 22, 2024, setting sail the following day.
“We are extremely happy with the results of the appraisal program which has further confirmed our understanding of our geological, geophysical, reservoir models and demonstrated our operational capacity. Afina-1x is a vertical well, we are confident that a horizontal well or other well completion options that maximise reservoir exposure in the fields would deliver much higher production rates”, Chief Executive Officer of Springfield, Kevin Okyere said.
“This provides an incredible platform for reaffirming commercial development options for the Cenomanian and Turonian reservoirs. 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”, he added.
