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


Making up a Sonic Tool, South America


Sonic MakeUp.jpg

The logging crew above is making up a combination tool in the borehole, because the derrick tower is too short for the completed tool to hang above the rotary table.  The man in back is holding the make-up plate which will suspend the bottom of the partially completed tool combination in the top of the borehole while the next section is screwed into place. 

In this case, the orange coveralls are for visibility and do not indicate a particular vendor's work uniform.

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


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