UK-based oil and gas company Europa Oil & Gas is planning to conduct a site survey at its large, low risk Inishkea prospect located offshore Ireland ahead of an exploration well planned for 2020 while farmout talks with potential partners are ongoing.
The Inishkea prospect is located in Licensing Option (LO) 16/20 in the Slyne basin in Atlantic Ireland. The prospect lies immediately to the north west of, and abuts, the producing Corrib gas field in the Corrib Field Petroleum Lease Area. Europa owns a 100% interest in LO 16/20 and is the operator.
According to Europa’s statement on Tuesday, Inishkea has gross mean un-risked prospective gas resources of 1.5 trillion cubic feet (TCF).
Europa’s CEO, Hugh Mackay, said: “Our very detailed and thorough technical work confirms Inishkea to be a large, robust, low risk, gas prospect. The early promise we identified has been validated and the prospect has now been de-risked significantly. Inishkea’s location in a proven play, and close proximity to the nearby Corrib gas field and facilities informed our decision to elevate the prospect to flagship status. With 1.5 TCF of gross mean un-risked prospective gas resources, and a 33% chance of success, the prospect has exceeded our expectations.”
Mackay continued: “We will press on with our operational planning to enable a site survey in summer 2019 and a well targeting Inishkea, subject to funding and regulatory consent, in 2020. Since opening the farmout dataroom in December 2018 we have had several large oil companies review the prospect and we are updating them with this new information. Separately, our ongoing farm-in negotiations with a major international oil and gas company for three of our licences, FEL 1/17, FEL 3/13, and LO 16/20 which holds Inishkea are progressing. Subject to successful completion, Europa will have a clear line of sight to the drilling of a series of wells offshore Ireland, each of which has company-making potential.”
Low risk prospect
Europa announced its decision to fast-track technical work on the Inishkea prospect, aiming to identify a firm drilling target for an exploration well in 2020, back in March 2018.
On Tuesday, Europa said it had completed Pre-Stack Depth Migration (PSDM) reprocessing of 770km2 of 3D seismic data over the Inishkea prospect, including the area of the Corrib gas field. In addition, Europa has purchased 1,544 km2 of released 3D seismic data shot over, and immediately adjacent to, the LO area, 5,000 km of regional 2D and 13 wells.
Europa has further purchased Ocean Bottom Cable 3D seismic data over the Corrib gas field and used it to successfully benchmark and calibrate the PSDM data and the resulting geophysical interpretation and mapping. The Corrib gas field is interpreted as a salt-cored anticline in the Triassic Corrib Sandstone Formation (formerly the Sherwood Sandstone). The gas is dry, believed to be sourced from the underlying Carboniferous. Recoverable Reserves for Corrib are approximately 1 TCF.
Inishkea is a large fault bounded Triassic structure. It lies to the northwest of the Corrib gas field and is 11 km from Corrib at its nearest point. The reservoir is Triassic age Corrib sandstone sourced from the underlying Carboniferous. The trap is provided by a combination of Triassic Uilleann Halite top seal and fault seal. Engineering studies demonstrate strong positive economics for a range of porosity outcomes, including outcomes significantly poorer than Corrib. Europa’s view of porosity at Inishkea is supported by velocity data from new PSDM data. Given the company’s confidence in trap and reservoir quality and the nearby producing Corrib gas field, prospect risk is regarded as low based on in-house technical work.
Potential for fast track development through Corrib
A gas discovery at Inishkea has the potential for fast track development utilizing the nearby Corrib gas field facilities. The Corrib field is in decline and growing ullage in the gas infrastructure is predicted to become available. A recent report authored by PwC for the Irish Offshore Operators’ Association references rising demand for electricity in Ireland over the next 10 years, with a projected potential increase of up to 57%. The PwC report also cites rising demand for gas, which is forecast to increase 35% by 2030. Inishkea gas has the potential to provide a vital component of Ireland’s energy mix providing energy security, investment, jobs and tax revenues.
A drilling location for a first exploration well on Inishkea (18/20-H) has been identified. There is a robust, low risk tie on seismic data for the Corrib Sandstone reservoir back to the Corrib gas field. Europa intends to acquire a site survey in summer 2019 (subject to regulatory consent), enabling a well to be drilled at this location in 2020 (subject to funding and regulatory consents). Operations planning for both the site survey and engineering design of the exploration is in progress.
As previously announced, the company is currently negotiating farm-in agreements with a major international oil and gas company in respect of LO 16/20, FEL 1/17 and FEL 3/13. The company has agreed terms with the major’s NW Europe division and is awaiting a final investment decision from their head office. Europa continues to have positive engagement with the major and continues to have positive interest from other potential farminees.