I don't know about Texas ones, but I can tell you some about
the ones here in Oil City, PA, where Oil was discovered long
ago.
What it comes down to is you place "sucker rods" down the
hole that operate a foot valve that pushes the water up a bit
a time, till it 'spills' out of the casing at the top.
A Better Way can be found on my web site under the 'Pump'
section.
If you can be more specific in what you want to know I might
have a more descriptive answer for you.
-- For information on any of the following check out my WEB site at: http://www.biogate.com/bpaddock/Chemical Free Air Conditioning/No CFC's, Chronic Pain Relief, Echofone,Electromedicine, Electronics, Explore!, Free Energy, Full Disclosure,KeelyNet, Matric Limited, Neurophone, Oil City PA, Philadelphia Experiment. http://www.uCOS-II.com