LONDON -- Chrysaor has completed two successful appraisal wells on the Solan oil field west of Shetland, which should help expedite development in 2010.
Wells 205/26a-7/7z and 205/26a-8/8z/8y were both drilled using the semisubmersible Byford Dolphin, with Senergy providing well management services.
The initial 205/26a-7 wellbore, drilled north of the original discovery in summer 2008, encountered 85 vertical ft (26 m) of net oil-bearing Jurassic reservoir. According to Chrysaor, it was shallow and thick (compared to the pre-drill prognosis) and in good pressure communication with the discovery well.
Following coring, fluid sampling, and other logging tasks, the well was sidetracked to provide depth control and to appraise the updip Triassic reservoir beneath the western part of the Jurassic accumulation. Once operations were completed, the well was suspended for later re-use in the development.
This May, Chrysaor drilled its second appraisal well to search for additional reservoir volumes. Further horizontal legs were subsequently drilled to improve delineation of the Solan structure, including a pilot hole for the first planned producer well. This well was also suspended for later re-use.
Based on the results, Chrysaor has refined its model for Solan, which it expects to develop via subsea wells comprising two producers and two injectors. These will be tied back to a normally unmanned articulated tower tethered to a 300,000 bbl capacity steel storage tank. Produced oil will be offloaded every few weeks via a shuttle tanker.
The company submitted its environmental statement to the UK government early in December, and aims to submit a development plan by year-end, with a view to gaining sanction for the project early next year. Chrysaor hopes to produce first oil from Solan during summer 2011.
Chrysaor submits plan for Solan
Chrysaor has completed two successful appraisal wells on the Solan oil field west of Shetland, which should help expedite development in 2010.