A sample probe system for highly expandable and explosive fluid sample extraction from and reinjection to a fluid sample source, comprising a multi-channel sample take-off and return probe, characterized by: the sample probe being a unitary sample probe being integrated into the sample probe system, and having an axial length sufficient to extend into the fluid sample source, the sample probe featuring an elongated stainless steel cylindrical body having a fluid sample extraction port, an extracted fluid sample exit port being a sample take-off port and axially displaced from the fluid sample extraction port, a first extracted fluid communication channel extending generally axially in a direction of elongation of the cylindrical body for a first select length sufficient to extend between the fluid sample extraction port and the extracted fluid sample exit port, the sample probe defining a discrete return fluid sample reinjection input, being a return input port, integrated in the cylindrical body, a return discharge port of the cylindrical body being a return fluid sample reinjection outlet, and a second reinjection fluid communication channel extending axially between the return input port and the return discharge port for a second select length generally parallel to at least a portion of the first extracted fluid communication channel and offset from the first extracted fluid communication channel, the first axially extending channel establishing fluid communication of a first select length between the fluid sample source and the extracted fluid sample exit port and the second axially extending channel defining a second select length extending a select axial distance along the cylindrical body; the second channel having the return discharge port laterally directed normal to the direction of elongation of the sample probe and displaced from the sample take-off to minimize fluid flow disturbance in the fluid sample source from a reinjected fluid, a sample take-off line of the sample probe system being in fluid communication with the extracted fluid sample exit port; a sample return line of the sample probe system being connected to the sample take-off line and in fluid communication with the input port; and, a pump of the sample probe system being disposed along the sample return line downstream of a sample conditioning equipment and upstream of the return fluid sample reinjection outlet, the pump for increasing the pressure of return fluid sample in the sample return line to pressurize fluid sample passing therethrough to provide a speed loop reinjection system. the sample probe being a unitary sample probe being integrated into the sample probe system, and having an axial length sufficient to extend into the fluid sample source, the sample probe featuring an elongated stainless steel cylindrical body having a fluid sample extraction port, an extracted fluid sample exit port being a sample take-off port and axially displaced from the fluid sample extraction port, a first extracted fluid communication channel extending generally axially in a direction of elongation of the cylindrical body for a first select length sufficient to extend between the fluid sample extraction port and the extracted fluid sample exit port, the sample probe defining a discrete return fluid sample reinjection input, being a return input port, integrated in the cylindrical body, a return discharge port of the cylindrical body being a return fluid sample reinjection outlet, and a second reinjection fluid communication channel extending axially between the return input port and the return discharge port for a second select length generally parallel to at least a portion of the first extracted fluid communication channel and offset from the first extracted fluid communication channel, the first axially extending channel establishing fluid communication of a first select length between the fluid sample source and the extracted fluid sample exit port and the second axially extending channel defining a second select length extending a select axial distance along the cylindrical body; the second channel having the return discharge port laterally directed normal to the direction of elongation of the sample probe and displaced from the sample take-off to minimize fluid flow disturbance in the fluid sample source from a reinjected fluid, a sample take-off line of the sample probe system being in fluid communication with the extracted fluid sample exit port; a sample return line of the sample probe system being connected to the sample take-off line and in fluid communication with the input port; and, a pump of the sample probe system being disposed along the sample return line downstream of a sample conditioning equipment and upstream of the return fluid sample reinjection outlet, the pump for increasing the pressure of return fluid sample in the sample return line to pressurize fluid sample passing therethrough to provide a speed loop reinjection system. a sample take-off line of the sample probe system being in fluid communication with the extracted fluid sample exit port; a sample return line of the sample probe system being connected to the sample take-off line and in fluid communication with the input port; and, a pump of the sample probe system being disposed along the sample return line downstream of a sample conditioning equipment and upstream of the return fluid sample reinjection outlet, the pump for increasing the pressure of return fluid sample in the sample return line to pressurize fluid sample passing therethrough to provide a speed loop reinjection system.