Touchstone Exploration yesterday announced the completion of flowback testing of the Cascadura Deep-1 well, confirming a liquids rich natural gas discovery.
Touchstone has an 80 per cent operating working interest in the well, which is located on the Ortoire block onshore Trinidad and Tobago.
Heritage Petroleum Company Limited holds the remaining 20 per cent working interest.
Touchstone’s President and Chief Executive Officer Paul Baay said the positive test results from Cascadura Deep-1 further expands the opportunity on the Ortoire block “as we now expect to have two distinct and separate sheets producing from two wells in the Cascadura structure.”
“We will accelerate operations required to bring the two Cascadura wells onto production as the test results allow us to properly size surface facilities for reservoir management.
“We are also moving forward with the required applications to establish a second Cascadura surface location, designed for up to four development wells. The test results demonstrate the clear future production opportunities for the Company,” Baay said.
According to Touchstone, Cascadura Deep-1 well production testing commenced on April 8, 2021, with flow tests spanning a total of 58 hours, comprised of an initial clean-up flow period, followed by an initial shut-in period and a five-step rate test, including a 24-hour extended flow test. Well testing was conducted by an international well testing and measurement company.
During the extended flow test period, the well achieved a peak production rate of approximately 4,567 barrels of oil equivalent per day (90 per cent natural gas).
The well is currently shut-in for an extended pressure build-up survey for a minimum of four weeks to identify possible formation boundaries. Touchstone will not conduct further testing of the well and intends producing the well concurrently with Cascadura-1ST1.
Touchstone’s Chief Operating Officer James Shipka said the exceptional performance seen during Cascadura Deep-1 well testing “reinforces the geological concept of multiple stacked, independent hydrocarbon charged horizons in the Herrera turbidite fairway.”
“We will not be conducting any up-hole testing in the well as we do not want to interrupt this interval at the risk of damaging the reservoir with water-based fluids.
The data collected in this flow test indicates that sheet four is separate from sheet three, where production is expected from the Cascadura-1ST1 well.
There remains an additional 558 feet of potential pay above the tested zone in sheet three which can be evaluated in future development wells,” Shipka said.