To: Don Richards who wrote (2317 ) 5/2/1999 8:36:00 PM From: Salt'n'Peppa Read Replies (2) | Respond to of 15703
Lonepine, the April 30 report is the correct one, and yes, they do have the reservoir pressure completely wrong. I think that this must be a typo, because 4.2TCF is within the range that some of the other JV partners are estimating at this time. If they did use 8,170psi in their calculations, then changing that parameter to 15,800psi (which is nearer the real value) will allow for vastly more gas to be stored in the available reservoir porespace. Remember, gas is highly compressible. Yorkton got several things completely wrong in this report: 1) They stated that it has been 4 months, but, as you point out, it has now been well over 5 months since Nov. 23, 1998. 2) The relief well will not be "plugged back with cement, and then drilled out" as they stated. The plan was to cement a metal liner in the wellbore, to around 16,500 feet (actual depth not disclosed). Drilling would continue from the base of this liner (the shoe). 3) As Check pointed out, Yorkton's "Exhibit 1" table is wrong. 4) The reservoir temperature may be wrong too. The Hilton presentation in late March told us that the reservoir temperature at the top of the Temblor was 324F, and the temperature of the water currently being produced was around 350F. This temperature difference lead to the most widely held theory of the origin of this water. Namely, that it is coming from quite a bit deeper in the Temblor. I'm not sure where Yorkton got their very high 382F measure from. I have no idea where they came up with a 20% chance of success on the ELH play. Personally, I would think that it would be closer to 80%, given what we have seen so far. Yorkton is giving a 20% chance of success that ELH will prove up 4.2TCF recoverable. I'd like to know their %COS on proving up 2TCF. Comments welcome. Rick.