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Prediction of downhole flow regimes in deviated horizontal wells for production log interpretation

Bahrami, H ; Sharif University of Technology | 2010

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  1. Type of Document: Article
  2. Publisher: 2010
  3. Abstract:
  4. Production logging is used to evaluate wells production performance. Interpretation of production log data provides velocity profile and contribution of each zone on total production. In multi-phase flow conditions, production log interpretation can be challenging since producing fluids do not have similar densities and travel with different speed depending on fluids properties and wellbore deviation. Production log interpretation in multi-phase producing wells requires identifying downhole flow regimes and determining velocity profile for each phase. There are different flow regimes and velocity models available, which are being used in production log interpretation to determine wells flow profile in multi phase flow. However in the case of deviated horizontal intervals, the flow model might fail to provide reliable results for gas and liquids velocities. This paper represents the use of Computational Fluid Dynamics (CFD) simulation in order to model multi-phase flow in the wellbore and evaluate velocity profile across deviated horizontal intervals. The simulation results when integrated with production log data can help estimating velocity for each phase in different flow rates and for different wellbore trajectories. The approach can help interpretation of production logging data in horizontal multi-phase producing wells, as it can predict downhole flow regimes and identify the intervals having chance of downhole liquids re-circulation. Production logging data in a gas-oil producing deviated horizontal well with water loading in wellbore was used to verify reliability of the numerical simulation. The approach could help to evaluate the well production performance with less uncertainty
  5. Keywords:
  6. Computational fluid dynamics simulations ; Different speed ; Downholes ; Flow model ; Flow profile ; Flow regimes ; Log data ; Log interpretation ; Numerical simulation ; Production logging ; Production performance ; Recirculations ; Simulation result ; Velocity model ; Velocity profiles ; Water loading ; Well production ; Wellbore ; Wellbore trajectory ; Computational fluid dynamics ; Energy resources ; Flow simulation ; Fluids ; Horizontal wells ; Multiphase flow ; Oil field equipment ; Oil well logging ; Oil wells ; Petroleum engineering ; Rating ; Velocity ; Well stimulation
  7. Source: Society of Petroleum Engineers - Trinidad and Tobago Energy Resources Conference 2010, SPE TT 2010, 27 June 2010 through 30 June 2010 ; Volume 2 , June , 2010 , Pages 525-530 ; 9781617388859 (ISBN)
  8. URL: https://www.onepetro.org/conference-paper/SPE-132830-MS