Patent ID: 9181799
Filing Date: 2015-11-10
Classification: E21B

Abstract:
1. A sampling system for use in a well, comprising: a sample pump disposed in a target zone of the well to collect a fluid sample from the target zone; an upper pump disposed above the sample pump; a lower pump disposed below the sample pump; a first flow device disposed between the upper pump and the sample pump; and a second flow device disposed between the sample pump and the lower pump, wherein the upper pump, the lower pump, and the sample pump have extraction flow rates set to generate a first hydraulic zone between the first flow device and the sample pump and a second hydraulic zone between the sample pump and the second flow device, the first and second hydraulic zones isolating the fluid in the target zone from fluid in other zones of the well, and wherein the first flow device and the second flow device monitor fluid flow within the well to confirm isolation of the target zone.