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Liquid-liquid-Solid Three Phase Flow in Horizontal Well on Bottom Hole Condition
Nejati Ali Gorzani, Hamed | 2019
745
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- Type of Document: M.Sc. Thesis
- Language: Farsi
- Document No: 51512 (06)
- University: Sharif University of Technology
- Department: Drilling and Production
- Advisor(s): Shad, Saeed
- Abstract:
- When producing oil reservoirs, if the reservoir formation has a low resistance, the entry of sand into the oil wells is definite. Creating a bed of sand particles at the bottom of the tube can cause operational problems such as reduced production and excessive drop in pressure, equipment failure, erosion and corrosion. By keeping the velocity above the sedimentation rate (the speed of solid particles always moving and above the bottom of the tube), preventing these problems can be prevented. A wide analysis of the flow regime in the horizontal and sloping pipelines for the flow of water, oil, and sand has been made in this context. Also, the effect of sand concentration on the flow regime and determination of sedimentation rate velocity for different concentrations and slopes is investigated. The effects of parameters such as the rate of water and oil phase dispersion, the intake of sand particles and the size of sand particles in laboratory tests, the regime of different streams visually, including the decentralized flow of sand at the bottom of the tube, concentrated at the bottom of the tube, moving bed, Fixed bed creates three-layer flow and sand transfer through turbulence in two continuous flows. Also, the rate of sedimentation rate and pressure drop in different laboratory conditions are obtained. Laboratory data show that the rate of deposition is independent of the solid input rate in fine sand measurements, while in larger sizes, with increasing input rates, the sedimentation rate also increases
- Keywords:
- Three Layer Solid Flow Regime ; Limit Deposition Velocity ; Adding Solid System ; Three Phase Liquid-Liquid-Particle Flow Regimes ; Solid Transfer Flow Regime by Turbulence Dual Continuous ; Pressure Drop Three Phase Flow
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