Numerical Simulation of Inflow Performance for Perforated Horizontal Wells
Accurate prediction of inflow performance for perforated horizontal wells is of great significance to reservoir engineering analysis and perforation design optimization. A reservoir/wellbore coupling method using a numerical reservoir model and a semi-analytical wellbore model was proposed in this paper. To solve to the modeling and calculating problem caused by the large scale difference between large-scale reservoir and small-scale perforation width or wellbore diameter, highpermeability line elements and nodes on the well trajectory were used to model perforations and wellbore respectively. The wellbore flow model considered the pressure loss inside the horizontal well and the effect of radial influx at the perforations. An explicit iteration scheme was developed to achieve pressure and mass continuity at the interface. With the proposed model, the inflow performance of perforated horizontal wells was investigated. The inflow profile and the streamlines around the perforations were presented. Sensitivity studies were conducted to identify the impact of perforation depth and permeability heterogeneity on the inflow profile and productivity.
Perforated horizontal wells Inflow performance Reservoir/wellbore coupling method Numerical simulation
WANG Haijing XUE Shifeng
College of Aerospace Engineering, Nanjing University of Aeronautics & Astronautics, China, 210016 College of Pipeline & Civil Engineering, University of Petroleum, China, 257061
国际会议
成都
英文
318-324
2010-10-10（万方平台首次上网日期，不代表论文的发表时间）