RE: Gas production flow rate1 Dec 2022 15:44
TTT,
Excellent question.
We will need to drill to find out.
There are a number of possible outcomes.
Let’s start with what we know.
1. The lower sands in mou 1 are over pressurised and have high porosity and permeability. These sands are interpreted to be the end of fan deposition, so it should be thicker nearer its source of deposition.
2. The 2 d seismic shows that the reservoirs are connected between mou 1 and mou 2 ( previously named mou4).
3. The 2 d seismic shows that the mou 2 well is to drilled into a four way dip anticline, but outside of this four way anticline and above the mou 2 top seal there is evidence of a seismic gas cloud, which may indicate top seal failure at some point in the past. ( note there is a small fault to west of mou 2 location and it maybe less risky to drill on west of that fault, is this the reason for not declaring the final mou 2 well location).
4. The seismic Avo analysis indicates that there is an almost continuous gas indication from mou 1 to mou 2. In the past this has been a reliable gas indicator in the rharb basin.
5. We know the based was subject to uplift on at least two occasions.
6. We know that top seals at anchois 1 and 2 can be very thin and very effective.
7. As far as we know there is not a sealing fault between mou 1 and 2 and hence there is a good chance mou 2 is also overpressurised if the reservoirs at mou 1 connect to mou 2.
So what’s the outcome going to be , three principal possibilities
A. Mou 2 is drilled into the four way dip anticline and finds and flows gas, if the reservoir pressures can be correlated to mou 1 then it’s improves the likelihood that the gas reservoirs are connected.
B. If the gas pressures cannot be correlated between the wells then there may be two separate gas accumulations with different gas water contacts and probably a sealing fault between the reservoirs. If a gas water contact is established in mou 2 then that allows the gas in place calculations to be performed .
C. Mou 2 is drilled into the four way dip anticline and establishes a gas water contact in the structural spill point which indicates that the stratigraphic trap between mou 1 and 2 is not full of gas but two separate accumulations and that there then must be a fault or reservoir pinch out of gas between mou 1 and 2.
D. Mou 2 drills and finds gas but does not find the gas water contact and the reservoir pressures can be correlated to mou1, then upside case is still on.
I based my investment decision on mou 2 being drilled into the four way dip anticline and finding gas only in that structure with no upside. Enough to generate a sizeable cng net revenue quickly.
Jimmy