Drilling of Lateral Directional and Horizontal Wellbores
Purpose
Sidetracking is intended to bring back to operation the wells from the killed well stock and increase productivity of wells and provide for additional recovery of oil reserves from the area outside the watered bottomhole zone.
Areas of Application
Workover of the killed stock wells, watered wells and low productivity wells.
Application Effectiveness
Every year up to 50 wells are returned into the operating well stock from the category of the killed and low productivity wells stock.
Drilling of Wells with Horizontal and Horizontally Branched Wellbores
Purpose
Drilling horizontal and horizontally branched wellbores is designed to reduce capital investments into the development of oil fields.
Areas of Application
The oil fields with complicated geological structures and extra viscous oil deposits.
Application Effectiveness
Investments saving, improvement of the wells’ productivity.
Construction of Small Diameter Wells (Slim Holes)
Purpose
Small diameter wells are intended to reduce construction costs through the use of mobile light-duty drilling rigs and reduction of the metal content in wells construction.
Areas of Application
Wells down to 1400 m depth.
Application Effectiveness
Cost saving for the construction of wells, when replacing 146 (168) mm production strings with 114 mm ones (35%).