Zenith Energy Ltd., the listed international oil and gas production company operating the largest onshore oilfield in Azerbaijan, has provided an update on its ongoing well intervention in the Jafarli Field.
Following the company's most recent update of November 2, 2018, Zenith can confirm that the primary phase of its well C-37 well intervention has entered the final stage.
Operational Progress - Well C-37, Jafarli Field
As announced on November 2, 2018, the company's A-80 truck-mounted workover rig has run in hole with a scraper to cleanout the production casing shoe at a depth of 3904 m. During the operation an obstruction was encountered at a depth of 1830 m. As a result, the company pulled the scraper out of hole and performed running in hole of 2 7/8 in. tubing with mule shoe which successfully cleared the obstruction and cleaned out the wellbore to a depth of 3904 m.
The company's field team is currently running in hole with a tri-cone drill bit which has successfully cleared the previously detected obstruction at a depth of 1830 m and expects to reach the target depth of 3904 m (production cashing shoe) during the course of this morning.
Following completion of the aforementioned activity, the company will pull the tri-cone drill-bit out of hole and subsequently re-run a scraper in hole to perform a final cleanout of the casing to a depth of 3904 m.
The Company will begin wireline logging as soon as the scraper has been pulled out of hole following successful cleaning out of the casing to a depth of 3904 m. Construction of the drilling pad is expected to commence immediately after the conclusion of wireline logging.
The wellbore will be considered ready for well deepening operations once these activities have successfully been concluded.
In addition, Zenith's operational team is assessing whether to perform a further cleanout of the wellbore in the 3906 - 3987 m interval followed by a production test to determine the natural productivity of the well from the penetrated depths of the Middle Eocene formation which are plugged with sand-solids.
A-100 Truck-Mounted Workover Rig
The Company confirms that the truck for the A-100 truck-mounted workover rig has been completed by AutoKrAZ in Ukraine following the installation of an enhanced 375 hp engine. Zenith's team is now completing the delivery acceptance checks and arranging for transportation of the rig to Azerbaijan where the workover rig structure, including the mast, will be installed. The Company expects the A-100 workover rig to be deployed in operations by the close of 2018.
180-Ton Truck-Mounted Drilling Rig
The Company will provide an update once a 180-ton truck-mounted drilling rig is mobilised to the well location to begin drilling activities after the completion of civil works at the C-37 well location.
BD-260 Drilling Rig
The Company has received confirmation from B Robotics W S.r.l., ("Robotics") that the BD-260 drilling rig, purchased by its oilfield service company subsidiary, Zena Drilling Limited, ("Zena"), is now undergoing final testing and quality control prior to shipment which is expected to take place during the first fifteen days of December. The testing of the equipment will entail a full rigging up of the BD-260 drilling rig in the Robotics base for inspection by Zenith's technical team.
Ion Tica, Zenith Aran's Workover and Drilling Manager, commented:
"Using the company's A-80 workover rig for these activities has saved Zenith approximately US$200 000 in rig rental costs. This is an important saving and validates Zenith's strategy of operating its key operational equipment. We have made good progress and overcome all the challenges so far in the C-37 operation, I look forward to concluding wellbore cleanout activities, which have been intensive as we have reached a depth just short of 4000 m, and beginning the drilling phase of the operation."
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