Abstract: A production logging device, insertable into a cased or uncased wellbore for determining concentration of specified components in flowing production fluid, is provided having a tool body sized smaller in diameter than the wellbore so that flowing fluid production is not blocked. A line is connected to the tool body by which movement of the tool body within the wellbore casing can be selectably controlled from a remote location, and by which information signals can be communication from the tool body to the remote location. An infrared radiation source operatively connected to the tool body. A plurality of infrared transmission sites are circumferentially spaced around the tool body directed so that infrared radiation from the infrared radiation source is transmitted through flowing production fluid in the wellbore.

Abstract: A tracer deployment tool for discharging a quantity of radioactive or other toxic tracer material into a wellbore for distribution into an earth formation with an injection fluid includes a first piston held in a predetermined position by shear pins and a member supporting a rupturable vial of tracer material. The member connected to the piston is formed as a generally cylindrical cage through which a knife member extends and responds to movement of the cage to rupture the vial. Movement of the piston uncovers passages which permit through-flow of liquid through the vial retaining cage to flush the tracer material thoroughly from the tool. An elongated actuating rod is connectable to a packer setting mechanism or the like for effecting operation of the tool. An alternate embodiment includes two pistons which define the tracer holding chamber.