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→Pressure measurement
==Pressure measurement==
==Pressure measurement==
<gallery mode=packed heights=200px widths=200px>
<gallery mode=packed heights=300px widths=300px>
wireline-formation-testers_fig3.png|{{figure number|3}}Pressure recording by a dual pretest formation tester.<ref name=pt04r18 />
wireline-formation-testers_fig3.png|{{figure number|3}}Pressure recording by a dual pretest formation tester.<ref name=pt04r18 />
wireline-formation-testers_fig4.png|{{figure number|4}}Typical log record of a single pretest formation tester showing both analog and digital log presentations. Copyright: Western Atlas International, 1987; courtesy of Atlas Wireline Services Division of Western Atlas International, Inc.
wireline-formation-testers_fig4.png|{{figure number|4}}Typical log record of a single pretest formation tester showing both analog and digital log presentations. Copyright: Western Atlas International, 1987; courtesy of Atlas Wireline Services Division of Western Atlas International, Inc.