Patent ID: 6164127
Filing Date: 2000-12-26
Classification: E21B

Abstract:
Apparatus for obtaining a water sample from a well, said apparatus comprising:a first valve having first, second, and third ports and capable of assuming alternatively a first valve position, in which said first and second ports are in fluid communication, and a second valve position, in which said first and third ports are in fluid communication;a second valve having first, second, and third ports and capable of assuming alternatively a first valve position, in which said first and second ports are in fluid communication, a second valve position, in which said first and third ports are in fluid communication, and a third valve position in which said second and third ports are in fluid communication, said second valve first port being coupled to said first valve second port for fluid communication therebetween, said second valve third port being coupled to a vented gas destination;a gas source connected to said first valve first port;a hose having a first end for insertion into the well, and having a second end connected to said second valve second port;means for alternatively placing said first valve in its first position and said second valve in its second position, permitting gas from said gas source to flow to the vented gas destination; placing said first valve in its first position and said second valve in its first position, permitting gas from said gas source to fill said hose, and placing said first valve in its second position and said second valve in its third position, permitting gas within said hose to be vented to the vented gas destination as water from the well enters said hose, and blocking gas flow from said gas source.