Horizontal laterals complicate well completions, reentry

Arabian Gulf Oil Co.’s (AGOCO) horizontal well programs in various fields in eastern, middle, and western Libyan oil fields have successfully increased initial production rates, although complicating well completions and cleanouts.For instance, the horizontal wells in the Sarir field will flow naturally without artificial lift and have increased productivity by two to three fold compared with vertical wells. But improper completions and cleanout practices have led to productivity declines in the wells, and current available means of reentry for logging or workovers have proven unsuccessful.The learning curve for completing these wells has been steep. Drilling time has decreased to 8...

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