Ghanaian upstream petroleum exploration firm, 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.
The appraisal was carried out by Deepsea Bollsta Rig from Northern Ocean Limited (NOL).
The Deepsea Bollsta was released on 22nd November 2024 at midday, and it set sail from Ghanaian waters the next day at 2.30 p.m., a statement issued by Springfield E&P on Wednesday and copied to energynewsafrica.com revealed.
The appraisal follows a ruling by an International Court of Arbitration that ordered the Government of Ghana to direct Springfield E&P to do further work to ascertain whether the properties of oil in the Afina Discovery located in the West Cape Three Points block 2 is the same as that of Sankofa field in the Offshore Cape Three Points (OCTP) block operated by Eni, in order to pave the way for unitisation of the two blocks.
It would be recalled that the Afina-1x drilled in 2019 is located at a water depth of 1030 metres and was drilled to a total depth of 4085 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.
Touching on the result of the appraisal, Springfield E&P noted that the Afina-1x Drill Stem Test (DST) carried out on the Cenomanian sandstone flowed at a maximum rate of 4500 barrels of oil per day, confirming good reservoir productivity on the upper end of pretest expectations.
It said pressure transient analysis also indicated reservoir pressure depletion at the reservoir level compared to 2019 pressures indicating depletion through production.
It further said 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 reservoir showed the pressures consistent with the pressures collected in 2019,” the statement said.
Commenting on the result, 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 geological, geophysical and 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.
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 that with the successful completion of this appraisal well-test activity, Springfield continues to make history as the first independent Ghanaian and African Energy Company to operate a deep-water asset and find hydrocarbons.
Springfield Exploration and Production Limited was incorporated in March 2008 to pursue exploration and production opportunities in Ghana and the West African sub-region.
The process of acquiring a block began in 2012, but the Government of Ghana finally awarded it in March 2016.
The company is currently the Operator and Majority Interest Holder of West Cape Three Points Block 2 with the Ghana National Petroleum Company and its exploration wing, GNPC-explorco holding the remaining interest.
Source: https://energynewsafrica.com