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the Atomic Energy Commission's Nevada Test Site. The logs were run to deTermine the entrance <br />of water and flow of same in the well bore. The static fluid level was 2, 000 feet. Salt water was <br />prepared and placed in the well bore at 3, 900 feet and above. Curve # 1 is a Self Potential with <br />calibrations set at 100 millivolts per inch on the chart. Note the zones of indicated porosity and <br />permeability on this curve. Curve # 2 is the resistivity of the well fluid as determined by the <br />Salinometer. Note the resistivity increase between 2, 520 and 3, 360 feet. Curves # 1 and # 2 are <br />recorded as soon as the drill pipe through which the salt water was placed in the well bore was re- <br />moved. Curve # 3, and S. P. , and Curve # 9, a Salinometer, was recorded while logging down two <br />hours after Curves # 1 and # 2. Note the interface has moved down from a depth of 2, 150 to 2, 325 <br />feet. Also, the resistivity values between the depths of 2, 150 to 3. 400 feet has become constant. <br />Curves # S and # 6 were recorded from the bottom up one hour after Curves # 3 and # 4. A small <br />increase in resistivity is indicated at 3,600 feet. The resistivity between depths previously noted <br />has decreased slightly. The salt-fresh water interface has moved down from 2, 325 to 2, 400 fee[. <br />An examination of the Self Potential and Salinometer curves indicated water flowing from the zone <br />at depths 2, 600 to 2, 700 #eet down to the zones at 3, 200 and 3, 400 feet. <br />Conclusions <br />From the above examples, it can be concluded that wire line cools developed for the oil and <br />gas industry can have great utility in brine wells. There is room for improvement in too] design <br />and logging techniques [o create better results. This will come about only through cooperative <br />efforts. <br />69 <br />