Productivity index of horizontal well in Mishrif formation of Buzurgan oil field – Case study

Abstract Horizontal good technology is one of the recent methods in drilling and exploitation geological formations best optimal ways, because many comprehensive advantages that these wells enjoy with most important measurement prediction index called productivity index. Which equivalent to several times higher than vertical well index, if field invested by only. The current research focuses on calculating proposing development point view reservoir formation Burgan oil through production from units approved (MB21, MC1, MC2) using horizontal comparing it value same units. Well-known published adopted case steady state pseudo were used calculations comparison standard observed results, was found Joshi method closer others for both cases. Then completed taking into account all conditions factors have a significant role calculated obtained results revealed PI increases [well length, isotropy ratio (Kv/Kh), thickness vs. length] increase, while decreased [ drainage area] increase conditions. Also, length Pseudo condition studied methods, Kuchuck Economides seem be close but closest reality importance application present case. Completion configuration has an effluence PI, increasing opening such length. indicated use this type promising, gave valuable, excellent, optimistic future profitable manner.