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Downhole Drill Stem. Drilling Fluid. Tester Valve. Tool for testing formation fluid. Sample Chambers. Packer. Formation Fluid (Oil, Gas, Water). Pressure Recorders. American Petroleum Institute, 1986. JMA.
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Downhole Drill Stem Drilling Fluid Tester Valve Tool for testing formation fluid Sample Chambers Packer Formation Fluid (Oil, Gas, Water) Pressure Recorders American Petroleum Institute, 1986 JMA