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Systems and Methods for Pump Control Based on Estimated Saturation Pressure of Flow-Line Fluid with its Associated Uncertainty During Sampling Operations and Application Thereof
Systems and Methods for Pump Control Based on Estimated Saturation Pressure of Flow-Line Fluid with its Associated Uncertainty During Sampling Operations and Application Thereof
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机译:基于估计的流线流体饱和压力及其相关不确定性的泵控制系统和方法及其应用
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摘要
A downhole fluid testing system includes a downhole acquisition tool housing configured to be moved into a wellbore, where the wellbore contains fluid that comprises a native reservoir fluid of a geological formation and a contaminant. The system includes a pump to pump fluid through the downhole acquisition tool, a sensor configured to analyze portions of the fluid and obtain a fluid property the fluid from an optical spectrometer, including an optical density, and a controller coupled to the housing to receive a first plurality of measurements over time from the sensor, estimate a future saturation pressure of the fluid at specific time increments via a processor based in part on the first plurality of measurements and a saturation pressure model, and control a flow rate of the pump that causes the flow line pressure to remain above the estimated future saturation pressure plus a value of the associated uncertainty.
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