An Enhanced Potential Fluid Theory Approach for Horizontal-well Productivity Calculations
Horizontal wells have emerged as a new alternative to vertical wells for optimal reservoir exploitation. The vertical to horizontal permeability anisotropy is a crucial variable in deciding which configuration can provide the best performance. This work presents the derivation of an improved equation using potential-fluid theory to calculate the productivity of horizontal wells. Furthermore, a production potential assessment of horizontal wells in comparison to vertical wells by productivity indices using the proposed equation is presented. The results show that a horizontal well could produce oil at a rate two to six times greater than an unstimulated vertical well, assuming the same pressure drawdown.
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Document Type: Research Article
Affiliations: 1: Department of Chemical Engineering,University of Lagos, Lagos, Nigeria 2: Department of Petroleum and Gas Engineering,University of Lagos, Lagos, Nigeria
Publication date: July 18, 2011