The associated sidetrack of this well was at a depth of 3800m after drilling through 460m this week.
"During the week, the well drilled through a fault zone and encountered a repeat section of Darai limestone," Oil Search said.
"Preliminary petrophysical evaluation has been completed and indicates the Trapia 1 ST1 well did not intersect any prospective reservoir intervals. The forward plan is to plug and abandon the well and commence moving the rig to the Moran 16 development well."
The well was managed by Oil Search on behalf of well operator ExxonMobil in petroleum retention licence 11.
Located 13km east of the Angore gas field and 23km east of the impressive Hides field, there were hopes it could have provided more resources for the ExxonMobil-led PNG LNG project.
Oil Search owns 52.5% of PRL11, while Exxon PNG subsidiary Esso Highlands owns 47.5%.