Subsidiary News: Doyon Drilling Introduces New Rig 142
Doyon Drilling, Inc. (DDI) is in the process of adding a new state-of-the-art rig to its fleet – Rig 142. The new rig was engineered and built in Canada, before being transported via truck to the North Slope, where it is currently being assembled. Rig 142 will be contracted to ConocoPhillips for five years, and the company expects to begin operations in February 2016.
Doyon Rig 141 played a significant role in the ultimate construction of Rig 142. In 1995, DDI identified a stacked rig on the North Slope that was being cannibalized for parts. The actual structure and subbases were solid, and DDI determined it had the potential to be a valuable rig if it had a new moving system and could be reconfigured for 25-foot well spacing.
DDI approached Parker Drilling, the rig owner, to enter into a joint venture for the rig, named Doyon Parker Rig 141. DDI purchased 75 percent of the rig and Parker retained 25 percent ownership. Once the rig restructuring was complete, DDI became the rig operator. Rig 141 was in poor condition, but after being repaired and modified, it became the most versatile rig in DDI’s fleet.
In 1998, during the industry downturn, DDI purchased the remaining 25 percent ownership interest in the rig and contracted it to BP for a multi-well program at Milne Point. The rig had great success performing pad drilling on 30-foot well spacing and could be mobilized in winter. This capability resulted in longer-term contracts for the rig to drill multiple exploratory wells during the winter. However, after several years of drilling in Kuparuk, there were fewer wells with the well spacing required for Rig 141 to operate, and it appeared that the rig would not be able to work year-round.
ConocoPhillips had been pleased with the DDI Rig 141’s performance and requested a rig study to determine if a new drilling subbase would allow the rig to drill on 10-foot well spacing. An additional requirement was that the drilling module be lightweight and able to move across ice bridges. The existing Rig 141 modules, including two pipe shed units, mud pit modules, mud pump module, power module, and support module, would be integrated into the new Rig 141 subbase. The feasibility study was completed and DDI was contracted to build the subbase.
When the new drilling module was nearly complete, ConocoPhillips decided to retain Rig 141 in its current state and integrate new modules into the new subbase. They requested a study to determine the time frame and cost for completing the rig modules. The study and engineering was completed and ConocoPhillips decided that this new rig would be named Rig 142.
Construction of Rig 142 began in May 2014 with rig commissioning in August . The remaining modules were engineered and built by Dreco in Canada. A number of Doyon, Limited board members and senior management, as well as ConocoPhillips management staff, visited the Dreco/NOV fabrication facility in late July 2015. At that time, they reviewed the 3D concept and met with engineering staff for an understanding of the rig concept and layout before touring the rig.
Rig 142 began shipping in late August 2015. Approximately 140 truckloads of equipment were moved from Canada to the North Slope. Rig crews have begun the assembly process, and ConocoPhillips is scheduled to begin operating the new Rig 142 in February 2016.