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A variety of processes have been proposed for the generation of overpressure; the most commonly quoted are porosity reduction due to compactional disequilibrium or lateral stresses, and fluid expansion. In the latter case, the excess fluid associated with hydrocarbon generation is considered to be a major contributor to overpressure generation, particularly at depths greater than 12,000 ft.4
While it is probable that overpressure is the result of a number of processes, it is important to recognize the dominant mechanism. The dominant process may change both in spatial and temporal position within the basin, and it is critical to recognize which process is currently active, as this may influence the interpretation of the hydrocarbon potential of a basin.
Prospect risking
Exploration prospect risking is quantified by multiplication of the risking factors: trap, seal, hydrocarbon generation and timing, and migration. 5
In an overpressured basin there are implications for the estimation of all of these factors with the exception of the trapping mechanism.
Seal
Every overpressured system has a seal. There is always a top seal, which in overpressured terms is the transition zone.
Side seals can be present, either as a result of faults, facies variations, or diagenetic alterations. The side seal may not be recognizable from seismic sections, but is most often inferred from lateral pressure variations.
The significance of the pressure seals in abnormally pressured compartments is that stacked reservoirs may be present. Thus each pressure compartment has the potential for hydrocarbon trapping, and a number of plays may be stacked vertically on top of each other.
All told another poor week for JLP, in fact a poor 12 months really. The share price is pretty much back to where we were this time last year despite all the work done on the ground. The board must be pretty fed up too considering this was to be our turnaround year. I suppose there's still time though. Private investor patience and good will towards the company is pretty low at the moment and rightly so. At least AFC had a good day and put me back in profit if only by a small margin. All the best for the weekend and let's see what next week brings. idg69
new investors on board - this will turn it around big style. Ideas, Manufacturing and distribution - the way to go!!
Copper prices are on the up and CAML looks to be a producer which will reap signifiant rewards from the commodity's strength. Here's a recent detailed report on CAML, great for those who are still discovering the company
Re sandpmag & trading update. "we should be on the road to riches" I only hope you are right in your forecast. However there are so many shares issued I fail to see the sp going above1 or 2p in which case I would just about break even. £ millions of income v billions of shares doesn't look a great prospect to me. Any thought anyone?
There is a fine line between blatant deception and looking after no. 1 a
reluctant to 'throw' any more into the JLP pot
Hi Breezy, on Friday you would have thought 4p was pretty good for a top up and couldn't have foreseen 3.5p on Monday. I have 2k sat in my holding account but I'm reluctant to through any more into the JLP pot. Leon has done a tremendous operational job over the last 2 years and the company is much stronger for the future as a result. It's just that the markets want and need to see the numbers and not just how many tonnes of earth they have processed but real financial numbers. I'm holding for the foreseeable as dumping them at this stage would be crackers having held for 2 years. What I thought would be a 2-3 year investment could be nearer 4-5 years. AFC and RKH are both flat lining at the moment too. Good luck matey, I'm sure we'll have our day in the sun soon. Keep the faith. idg69