CONNATE WATER SATURATION
SWCT. Non-destructive, in situ method for measuring Swc.
Versatile. Can be carried out on 100% oil producing wells, in cased or open hole completions.
Deep investigation. Results typically represent hundreds of barrels of pore space in the test zone.
Precise. Swc results usually measured within ±2 saturation units.
||Inject oil or diesel plus ester tracer into 100% oil prodcution zone.
||Push ester farther into zone with more oil or diesel carrying
a material balance tracer.
||Shut in well for a two to ten day period.
||Produce well and analyze returning oil for tracer content.
||Calculate Swc from separation between reaction product alcohol
tracer and remaining ester tracer.
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