One of the basic properties of a gas is that it expands to fill it's container. The container in this case is the well bore.
If there was higher than normal pressure in any zone of the well bore, it would be reflected along the entire length of the bore. Higher than gradient pressure would be present from the surface to the bottom.
Now, the only pressure number we have to work with is 7,500 psi at a 16,600 ft. depth.
Using a standard gradient of .465 psi/ft we should expect to see 7,719 psi at that depth. I'm using that number only because Zion Oil has declined to share the actual gradient.
.465 * 16,600 = 7,719 psi.
If we have subnormal pressure at any point in the bore, we have subnormal pressure in all parts of the bore. Again, that is a basic physical property of a gas.
On another note: What is 10X heavy gas? 10X heavier than standard atmosphere?? If that's what it means, then we are certainly not talking hydrocarbons.