Post by
OILFINDER on Oct 20, 2006 4:42pm
Velocity Pull Down Confirmed in Press Release
I have had several individuals ask me to discuss my recent post in simplified terms:
If you look at the cross section published on the BSIC web-site, the cross section has Jurassic, Triassic, and Paleozoic rocks below the North Flank Thrust within a syncline and/or low structure setting.
The News release indicated they cut thru the thrust at 3780 feet and did not encounter any of the younger Jurassic or Triassic rocks below the thrust as previously predicted in the cross section.
To correct the cross section for the velocity pull-down caused by less dense rocks encountered above the North Flank Thrust, a geologist or geophysicists would move the Paleozoic formations below the North Flank Thrust to a higher level.
In other words, my velocity pull-down theory that I proposed after the field trip has been proven to be correct as they indeed drilled into Paleozoic rocks and not into younger Jurassic and/or Triassic rocks as the cross section predicted.
If you remove the Jurassic and Triassic rocks anticipated below the North Flank Thrust from the cross section, the syncline and/or low structure plotted below the current drill-site is not a correct interpretation. In other words the drill-site is very likely located on a high structure or possible roll-over structure (anticline or dome) directly below the North Flank Thrust.
Cutting to the chase, DBLE may encounter a porous or fractured Paleozoic reservoir that could be charged with oil or gas at any time and/or any day.
The second implication of correcting for a velocity pull-down is the deeper structure (primary target) located below the deeper Hogsback thrust will also be encountered at a shallower than anticipated depth, and this double plunging anticline (dome) may have more vertical closure than originally anticipated. In other words the large anticline (dome) below the Hogsback Thrust may be much larger than previously anticipated.
OILFINDER