Productivity Calculations Using Method Of Sources And Sinks
Author(s)
J. E. Brooks
Abstract
Productivity calculations using method of
sources and sinks
J . E. Brooks
Schlum berger Reservoir Completion Center, USA.
Abstract
We present a new method for calculating well-flow productivity of a perforated
completion. The method creates the three-dimensional flow field around
perforations by distributing suitable sources and sinks along the perforation axis
and inside the wellbore. The source strengths are solved by satisfying known
pressure conditions at the perforations, wellbore and far field, and by imposing a
no-inflow condition at the wellbore. The method is quite general, allowing for
arbitrary perforation size, shape and phasing. Wellbore damage, the crush zone
surrounding the perforations and anisotropic permeabilities are also modeled.
Results agree well with previous methods using finite elements for calculating
productivity. The new method improves estimates of productivity in the
presence of anisotropy and crush zone, where previous methods are inaccurate.
Results of the produ
Keywords
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