Well Zone mapping31 Mar 2021 13:12
Ok, rather than just whinge, I have gone back through all the RNSs and mapped the wells and depth of each zone, with the results, on a spreadsheet. Summary as follows:-
Coho - 2 x gas zones found (5000-700ft depth) and one oil zone (7700ft). Upper gas zone only tested. Lower oil uneconomic. 1 x gas zone left to test.
Cascadura - Found 2 x shallow oil zones (1,000ft and 4,000ft). 2 x gas zones (5000-6500) - I'm calling these 'middle gas'. Only gas tested, oil not tested yet.
Cascadura deep - Found the two 'middle gas' zones (5,500-6500ft), plus hydrocarbons at 7,000ft - I'm calling 'deep HC'. Deep HC tested and found water. Gas not tested.
Chinook - Found shallow oil (3,000ft), and Deep HC in 3 zones (Overthrust 8,000-8,500ft; Intermediate 8,700-9,500ft; subthrust 10,000ft). Test results - sub thrust = not economic; overthrust = on pump for EWT. Intermediate not tested.
So, it looks like we have to come....
1. Coho -> a lower gas zone;
2. Casca Deep -> 2x 'middle gas' zones a la Cascadura 1;
3. Chinook-> Overthrust EWT, Intermediate test.
What is interesting mapping the depths, is that generally there is 'shallow oil', 'middle gas' and deeper hydrocarbons. Chinook is testing the deeper hydrocarbons, which are the unknowns to date.
What is clear is that the TXP team have been marching ahead with exploration, and not fully testing all zones found in all wells. Someone with more knowledge than me might illuminate this, but it appears to be a case of taking a little bit of info from each well, and moving on with the exploration as fast as possible. A defensive move?