SKIN FACTORS IN PERFORATED VERTICAL WELLS

Skin Components Of Partially Completed Cased-holes

INPUT   DATA

Title  

Well deviation angle °
Well radius ft
Perforated length ft
Formation thickness ft
Horizontal permeability mD
Vertical permeability mD
Perforation radius ft
Distance between perfs. ft
Perforation length ft
Perforation phasing angle °

Approx. Location of Perforation   Top of reservoir   Middle  

Extra Data For Efficiency Estimation (Optional)
Skin due to formation damage  
Radius of external boundary ft

       Reset

RESULTS

PseudoSkin, due to: Skin Factor Totals
 ♦  Well Inclination, sθ -0.95
 ♦  Partial penetration, sc 3.6
 ♦♦  Slant & partial penetration, sc+θ   2.65
 ♦  Perforation: planar flow effects, sH -0.9
 ♦  Perforation: vertical flow effects, sV 4.75
 ♦  Perforation: wellbore effects, swb 0.0
 ♦♦  Perforation sp   3.85
 ♦♦♦  Total Skin, st   6.5
     
 ♦♦♦  Completion Efficiency, Ec   0.61

BARCHART: Skin Factors For Perforated Vertical Wells