Gas analysis.1 Apr 2024 05:13
Q2 starts today, and we can look forward to a lot of interesting news over the next three months. We do have some new information, but I am unsure if this is positive or negative, and welcome your observations.
You may recall I have talked a little about biogenic vs thermogenic gas. Of course most will know all this, but a brief reminder for those of us that left school rather a long time ago. Natural gas is methane, chemical composition CH4. Bacterial action on organic material contained within sediment produces biogenic gas, in a shallow, low-temperature environment. Thermogenic gas is derived from oil subjected to high temperatures and pressures deeper within the earth. You can tell the difference by measuring the ratio of two different isotopes of the carbon that is a constituent of the methane – a higher ratio of 13-C to 12-C indicates biogenic gas, while low 13-C to 12-C indicates thermogenic gas.
Some of the Guercif gas analysis seemed a little odd, and the data have been re-examined. It would appear that as well as the usual suspects 13-C & 12-C, there is an anomalous amount of the carbon isotope 9-C. I can only speculate that this is something to do with the very unusual conditions when the organic matter was incorporated into the sediments, immediately preceding the Messinian Salinity Crisis.
I admit I had to look up 9C (try Googling “Carbon-9 isotope”), it does seem to be rather odd. Unusually, it is unstable, emitting electrons, protons and neutrons as it decays. This could be of concern, since burning it would produce a cloud of radioactive CO2, which could turn our Green friends purple. However, a closer look at the radio-decay pathway throws up something very interesting.
There are three possible decay pathways for 9-Carbon – 1. A ß-particle is emitted, giving rise to 9-Boron, this in turn decays to 8-Beryllium, then to 2x 4-Helium. 2. Both alpha & betas are emitted, giving rise to 5-Lithium, which in turn quickly decays to 4-Helium & 1-Hydrogen. 3. A beta and a proton are emitted, giving 8-Beryllium, which in turn rapidly decays to 2x 4-Helium, plus 1-Hydrogen.
So we may have radioactive methane, but this could be balanced by also having a source of Hydrogen and valuable Helium. I will know more when people in Europe are awake, and will post again later today.