RE: deep wells22 Jan 2023 10:52
Snudge, the short answer would be to go back and look at all the RNS announcements for each well to get the best understanding of what happened to each well or go to the annual financials as the status of most wells are summarised within the Chairman's and Directors reports, each year.
However, Caspian has found oil bearing intervals in all of the deeps that they have drilled and even produced significant quantities from A5 for short periods, but all of them experienced difficulties with the high heat and pressure that exists at depths below the salt layer. They have tried many different ways to try to control the oil flow, whilst getting the wells ready for test production, using heavy mud to try to suppress the pressure in the well, while they case it and prepare it for production. The mud is so heavy that it gets stuck and then they experience difficulties trying to unblock it, not to mention dropping drill bits and equipment down the wells.
All of the wells have been drilled at strategic positions over the two main structures, Airshagyl and Yelemes Deep to try to determine the possible extent of the oil down there. They reckon the Airshagyl structure could be 58 square kilometres equivalent to surface area and some of the oil columns and intervals detected are very thick, so the potential is massive.
Well A5 on the Airshagyl structure, flowed at 3,800 bopd when they first drilled into the oil column, which after experiencing difficulties with controlling it and reducing the choke size it then flowed at 1,000 bopd for another short period before they once again had to shut it in to try to get control with the pressure. This well has had many attempts to re-open it, all so far unsuccessful.
The point is the oil is down there in massive quantities, they just have not been able to prove it up and get any of the wells into commercial production.
Well 802 is the current deep well being drilled on Yelemes and then they will have another go at Well A5 to try the horizontal drilling technique to see if this gets it flowing in a controlled way in Q2 or Q3 of 2023.
In the meantime they just sell production locally from the MJF structure from shallower wells, which provides sufficient cashflows to pay for all operations and the current dividends being paid out to shareholders.