Abstract: A system for separating and analyzing a discrete sample of multiphase fluid includes a separation vessel having a first inner chamber containing a discrete sample of multiphase fluid, and an analytical cell in fluid communication with the separation vessel. The analytical cell has a second inner chamber containing a diluted aqueous liquid phase sample for analysis. The system further includes probes disposed in the second inner chamber, each probe having a sensing area at a distal end, and being oriented in the second inner chamber such that the sensing area is immersed in the diluted aqueous liquid phase sample contained in the second inner chamber. The plurality of probes include a first probe whose sensing area surface is coated with a first ion-exchange membrane; and a second probe whose sensing area surface is coated with a second ion-exchange membrane, the second ion-exchange membrane being different from the first ion-exchange membrane.

Abstract: Methods and devices for obtaining approximate property data from the aqueous liquid phase of a multiphase fluid produced from a well. The device includes a separation vessel; a demulsifier source; a fresh water source configured to dilute an aqueous liquid phase sample; a water analysis unit configured to receive and analyze the diluted aqueous liquid phase sample, the water analysis unit comprising an analytical cell and at least one probe, the at least one probe having a membrane-coated sensor tip wherein the membrane-coated sensor tip having a membrane coating that comprises a polar material, the at least one probe being configured to measure a property of the diluted aqueous liquid phase sample to obtain diluted aqueous liquid phase sample data; a processing unit configured to calculate approximate aqueous liquid phase data accounting for the measured amount of fresh water used to dilute the measured sample of the aqueous liquid phase.

Abstract: A sample of a first aqueous liquid phase is drawn from a first one of a plurality of separation vessels in response to determining that a first separation operation in the first separation vessel has completed. First aqueous liquid phase sample data is obtained by analyzing the first aqueous liquid phase sample with at least one sensor. The first aqueous liquid phase sample data is transmitted to an external multiphase flow meter (MPFM) to calibrate, control, or optimize an operation of the MPFM. A sample of a second aqueous liquid phase is drawn from a second one of the plurality of separation vessels in response to determining that a second separation operation in the second separation vessel has completed. Second aqueous liquid phase sample data is obtained by analyzing the second aqueous liquid phase sample with the at least one sensor. The second aqueous liquid phase sample data is transmitted to the external multiphase flow meter.

Abstract: Methods and devices for obtaining approximate property data from the aqueous liquid phase of a multiphase fluid produced from a well. The method includes introducing a discrete sample of the multiphase fluid to a separation vessel; mixing a demulsifier with the discrete sample of the multiphase fluid; allowing the multiphase fluid to separate into separate liquid phases; drawing a measured sample of the aqueous liquid phase from the separation vessel, and diluting it with a measured amount of fresh water; analyzing the diluted aqueous liquid phase sample in a water analysis unit to measure a property of the diluted aqueous liquid phase sample and obtain diluted aqueous liquid phase sample data; and calculating the approximate aqueous liquid phase property data using the diluted aqueous liquid phase sample data and accounting for the amount of fresh water used to dilute the measured sample of the aqueous liquid phase.