Valeura Energy Inc., Calgary, said the third stimulated zone in the Inanli-1 appraisal well flowed natural gas as the company works to develop an unconventional gas accumulation play in the Thrace basin of Turkey in partnership with Equinor.
The zone was accessed via two intervals of 3,899-3,925 m and 3,855-3,876 m, which were stimulated in two separate operations with placement of 50 tonnes and 80 tonnes of proppant, respectively.
The net porous sand (above 3% porosity) within the gross section was interpreted to be 26 m, Valeura said. Once gas flow was confirmed post-stimulation by flowing gas up the casing for several hours, production tubing and artificial lift were installed to assist in cleaning up the well.
The well then flowed for 10 days. Average net gas rate over the flowing period was 442 Mcfd and stabilized at 247 Mcfd during the final 24 hr.
Gas from this zone is richer in condensate than the deeper zones previously tested in Inanli-1, with an average condensate-gas ratio of 30 bbl/MMcf. Water production declined over the duration of the test, to a rate of 130 b/d during the final 24 hr of flow.
Flaring was been minimized with almost all produced gas sold. This third test has concluded, and Valeura is preparing the well for the stimulation and testing of the fourth zone of interest.