Ground penetration radar

[ppata]

Hi,

I just found out about that GPR tool and I am very interested about its posibilities to improve the image of a shallow oil reservoir. On the net I found some data, but all of them presented through commercial interest. I need some case study on that(I understand it was used in Athabasca tar sands field) and some limitation for that technology.


Best regards,
Andrei

 

[ppata]

me again,
The first question is what is max of depth investigated with good results. 200 meters is too deep for it?

Best regards,
Andrei

 

[zdas04]

In really good soil you can sometimes convince yourself that you're seeing accurately at 2 meters. The tools are usually sold as a way to "see" buried utilities before digging. I've heard that they're very reliable in soil with the proper moisture (the example that the vendors use is Orlando, FL where they are routinely used at Disney World). In dry sand they seem to be good to about 2 cm, but that is quite inconsistent (I tried to follow a pipe that was burried 1.4 m and could find it about every 2-3 meters then it would disappear again).

I would say that the chance of getting reliable tops at 200 m is very small for the portable units. Truck-mounted units might be a lot better, but I don't have any experience with them. I'd guess that even the larger units would still be very dependent upon soil conditions.

David

 

[ctmtwilliams]

Two to three meters is considered good resolution under ideal conditions with the common GPR technology today. At 200 meters a seismic survey should provide the best bang for the buck esp. with all of the interpretation software/tools available these days.