Hydrocarbons were noticed while drilling through the Kohlan sandstone overlaying the basement interval and an oil sample was recovered from the Kohlan using a wire line MDT tool prior to running intermediate casing.
Hydrocarbon charged fractures were also observed while drilling the upper basement interval, the company said.
An open hole test was conducted on the basement interval, but no flow to surface was achieved due to the limited fractures encountered in the wellbore at this location.
Following the basement test, DNO perforated a 15m interval in the Kohlan and ran tests using a small electric submersible pump, and the well flowed at an unstabilized rate of between 130 and 180 barrels per day of 39 degrees API oil at the end of the five-day test.
The presence of oil shows in the basement and the Kohlan demonstrates a working hydrocarbon generation and migration system.
Meanwhile, the exploration well Bastora-1 in the Kurdistan Region of Iraq has been drilled to total depth of 3,600m.
Hydrocarbons were observed while drilling through several of the prospective intervals, and during the third test in the lower part of the Cretaceous interval a flow rate of 500 – 600 barrels per day of 16-18 API was achieved, the company said.
