Wells – Processes – With indicating – testing – measuring or locating
Patent
1989-09-19
1990-10-30
Massie, IV, Jerome W.
Wells
Processes
With indicating, testing, measuring or locating
166 64, 166 66, 166 651, 250303, 250259, 250269, E21B 4900
Patent
active
049662333
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. One of the pistons is connected to the actuating rod and is movable relative to the second piston to reduce the volume of the chamber, displace the second piston to uncover discharge port means and effect discharge of the tracer material from the tool.
REFERENCES:
patent: 3493757 (1970-02-01), Glenn
patent: 4289200 (1981-09-01), Fisher
patent: 4421982 (1983-12-01), Potter et al.
patent: 4771635 (1988-09-01), Trevillion
patent: 4809778 (1989-03-01), Johnson
Bergren, III Frank E.
Blount Curtis G.
Atlantic Richfield Company
Martin Michael E.
Massie IV Jerome W.
Schoeppel Roger J.
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