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grouparax
Panel
bgColorpapayawhip
titleARAX

1. PVT model


 1.1. Understanding of Black-Oil fluid model


 1.2. Formation Volume Factor: Bw, Bo, Bg (including separator corrections)


 1.3. Phase viscosities: mu_w, mu_o, mu_g


2. Zonal Analysis


 2.1. Location of inflow zones


 2.2. Location of calibration zones (based on flow stability)


 2.3. Location of calculation zones (based on flow stability)


 2.4. Locate cross-flow zones (based on temperature and raw FBS data)


3. Total Flowrate


        3.1. Flowrate Sensors


  3.1.1 Mechanical spinner (FBS, ILS, CFS) 


  3.1.2. Anemometer (HEX)


  3.1.3. Ultrasonic (UZI)


  3.1.4. XY Caliper (XYC)


 3.2. Flow velocity




  3.2.2. Calibration cross-plot (threshold, slope, non-linearity and ceiling at high V)


  3.2.3. Flow velocity calculation (cable speed correction)


 3.3. Flowrate Profile 


  3.3.1. Cross-sectional flow profile (from parabolic for laminar flow to flat for turbulent flow) and how to set the correction coefficient


  3.3.2. Building Q and QZI profiles


  3.3.3. Additional Analysis and QC 


   3.3.3.1. Against FBS/ILS/HEX stations 


   3.3.3.2. Against the latest production tests and reallocated production history


   3.3.3.3. Against pipeline pressure drop (flowing vs shut-in)


   3.3.3.4. Understanding of flowrate accuracy


4. Phase Hold-ups


 4.1. Phase Sensors 


  4.1.1. Understanding RECAP (calibration and dynamic water hold-up)


  4.1.2. Understanding CAP (calibration for gas/oil/water and dynamic gas hold-up and non-linearity at high water-cuts)


  4.1.3. Understanding HEX (calibration and fluid indication)


  4.1.4. Understanding DENSP (calibration and fluid indication)


 4.2. Phase slippage (what correlations to use in vertical, slanted, horizontal) and its impact on saturations


 4.3. Recalculating the flowrates to surface conditions


5. Multifinger PLT 


 5.1. Understanding of muliti-phase horizontal flow 


 5.2. Understanding of linear and circumferential sensor arrays (including the angle correction)


 5.3. Building the integral QZI flow profile from array-data


6. Regulations


 6.1. Input Data


 6.2. Logging Procedure


 6.3. Output Data and Final Report