Donald G. Hill, Ph.D., 

R.Gp., R.G., R.P.G.

Consulting Petrophysicist

"The World is my District"


California Registered Geophysicist No. 170

California Registered Geologist No. 6043

Kentucky Registered Professional Geologist No. 1624

Texas Licensed Professional Geophysicist No. 6289


Temperature Models Can Provide Insight Into Subsurface Fluid Movement  


I/H, Gph-new.gif

The red circles in the above temperature model represent temperature build-up estimates of the undisturbed subsurface temperatures.  In the absence of strong subsurface fluid movement, temperatures should increase with depth.  The strong negative temperature gradients at -500 to -1000 ft, -2500 to -3500 ft, -4500 to -5000 ft, and -5000 to -5500 ft all appear to be above high permeability reservoirs charged with cooler waters, from shallower depths, moving through them.  Rainfall in this area is over 100 in/year, producing a rugged karst topography in the surface limestones.  A three phase reservoir here had almost no oil leg on the up-gradient side with a significant oil leg on the down gradient side, because of a tilted oil/water contact due to high regional flow rates in the water leg.

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Contact:  Donald G. Hill at: Cell/Business Phone:  +(925) 437-5748,   FAX:   +(309) 420-7354,   Home Phone:  +(925) 947-1541  


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