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→Methods for determining fluid contacts
! Method || Description || Advantages || Limitations
! Method || Description || Advantages || Limitations
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| rowspan = 3 | Fluid sampling: [[Production testing|production tests]] [[Drill stem testing|drill stem tests]] [[Repeat formation tester|RFT]] tests || rowspan = 3 | Directly determines fluid contacts by measuring recovered fluids || rowspan = 3 | Direct measure of fluid contact || Rarely closely spaced, so contacts must be interpolated
| rowspan = 3 | Fluid sampling: [[Production testing|production tests]], [[Drill stem testing|drill stem tests]], [[Wireline formation testers|Repeat formation tester|RFT]] tests || rowspan = 3 | Directly determines fluid contacts by measuring recovered fluids || rowspan = 3 | Direct measure of fluid contact || Rarely closely spaced, so contacts must be interpolated
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|-
| Problems with filtrate recovery on DST and RFT
| Problems with filtrate recovery on DST and RFT