Non-flashing downhole fluid sampler and method

Abstract From the Canadian patent

A non-flashing fluid sampler for use in obtaining a well fluid sample. The sampler comprises a body defining a first chamber a second chamber, a, third chamber and a sampling port therein. The sampling port is in communication with the first chamber and with an outside zone outside the body. The second and third chambers are initially isolated from one another by a control valve. Upon activating the control valve fluid may flow from the, second chamber to the third chamber through a flow restriction. An extendable floating piston is disposed between the first and second chambers and the, floating piston defines a variable volume therein. An initial amount of well fluid flows into the …