E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 49/10 (2006.01) E21B 49/08 (2006.01)
Patent
CA 2426968
An apparatus and method for extracting fluid from a subsurface formation is disclosed. A downhole sampling tool is provided with a probe having an internal wall capable of selectively diverting virgin fluids into one or more virgin flow channels for sampling, while diverting contaminated fluids into one or more contaminated flow channels to be discarded. The characteristics of the fluid passing through the channels of the probe may also be measured using techniques, such as optical density, to evaluate various fluid parameters, such as contamination levels. The data generated during sampling may be sent to a controller capable of generating data, communicating and/or sending command signals. The flow of fluid into the downhole tool may be selectively adjusted to optimize the flow of fluid into the channels by adjusting the internal wall within the probe and/or by adjusting the flow rates through the channels. The configuration of the internal wall and/or the flow rates may be automatically adjusted by the controller and/or manually manipulated to further optimize the fluid flow.
Hill Bunker M.
Zazovsky Alexander
Schlumberger Canada Limited
Smart & Biggar
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