Zenith Energy said that it is preparing to begin drilling operations at well C-37 in the onshore Jafarli field in Azerbaijan.
Image: Onshore drilling. Photo: courtesy of Stuart Miles/Freedigitalphotos.net.
This has been based on a series of in-depth geological investigations, including analysis of 2D and 3D seismic lines, which have evidenced a highly prospective, unexploited structure comprised of Upper Cretaceous carbonates formations.
As announced on August 13, 2018, the Company has completed two comprehensive geological studies which have offered a clear overview of the potential drilling opportunities located within the Company’s Azerbaijan asset.
Specifically, the study performed in relation to the Muradkhanli and Jafarli fields identified a new, previously unexplored, Mesozoic carbonate prospect running across the two fields beginning from the south-western flank of the Muradkhanli oilfield.
In addition, the study also provided a modern re-evaluation of the Eocene age reservoir levels comprised of sandstones, marly limestones and volcanic facies.
Drilling activities in well C-37, Jafarli Field
The Company’s operational team plans to divide drilling activities in two phases. Initially, well C-37’s total depth, 3,987 metres, will be deepened by 15-20 metres into the Middle Eocene formation and a production test will be performed.
The Company’s geological and reservoir investigations have indicated that the Middle Eocene formation in this well may hold significant oil reserves. This has been supported by the fact that an adjacent well, C-22, achieved a sizeable rate of production from the interval between 3,902-4,014 metres.
In the event of negative results from the first Middle Eocene target zone, Zenith will proceed with deepening the well by 200-250 metres to test the Upper Cretaceous formation.
Well C-37 Key Facts
– Drilled in 2008 by SOCAR to a total depth of 3,987 meters
– Currently produces at a rate of approximately 5 bopd following the installation of an electrical submersible pump
– Top of Upper Eocene 3,510 meters
– Top of Middle Eocene 3,935 meters
– Top of productive zone 3,925 meters
– An adjacent well, C-22, achieved highly significant production from the Middle Eocene formation
Beginning of Operations in Well C-37
The Company is mobilising its A-80 workover rig to the C-37 well location in order to perform preparatory work for the beginning of drilling activities.
These activities will include pulling the electrical submersible pump out of hole and subsequently running in the hole with a scraper to the production casing shoe at a depth of 3,904 metres, as well as performing a series of well investigations by wireline.
The Company will provide an update once the preparatory work is concluded and a 180-ton rig, contracted from a local service company, is mobilised to the well location in order to commence drilling activities.
Zardab Field Operational Update
The Company has decided to prioritise well deepening operations in well C-37 following recent geological and reservoir studies which have confirmed the significant potential for oil production with less complex operations than in Z-21 due to the better condition of the well and the improved reliability of available well data on account of it being drilled in 2008.
As announced on May 18, 2018, the fist operational challenge in Z-21 is the fishing out of 166 meters of 2 3/8″ tubing from the wellbore due to an undocumented change in the tubing diameter.
The Company intends to move the 180-ton rig to Z-21 in the Zardab field once operations in well C-37 are successfully completed.
Appointment of Workover and Drilling Manager
The Company is pleased to announce that it has appointed Mr. Ion Tica as Workover and Drilling Manager of Zenith Aran, its fully-owned Azerbaijan subsidiary, effective today.
Mr. Tica is a well operations and engineering executive with over 28 years of international experience in drilling and heavy workover operations. He joins the Company from the Arawak Energy group where he spent more than 10 years working in Azerbaijan and Kazakhstan. He previously worked for 17 years for OMV Petrom in Romania and Kazakhstan in various technical and management positions.
The Company has ended its working relationship with Mr. David Sadoway, announced on July 16, 2018, due to health reasons.
Zenith Energy CEO Andrea Cattaneo said: “I am pleased that we are now in a position to regain momentum with the resumption of intensive operational activities that have the potential to achieve concrete success. I am also delighted to welcome Ion to Zenith at an important time for the Company operationally.
“We have been through a progressive learning curve, which has included some operational challenges, but at the same time has resulted in an increased understanding of the reservoirs and geology of our asset, as well as a substantive verification of historical well data to the fullest extent possible.
“I am excited about our drilling activities in the Upper Cretaceous formation. This is a highly prospective formation which remains significantly unexplored in onshore Azerbaijan. This will be the primary target zone of our drilling programme that we plan to begin following the arrival of the BD-260 drilling rig.”
Source: Company Press Release