On the 3-d of April 2011, Drilling Innovation Company has provided services on the window cutting and whipstock orientation in the well number 1 Kovalevskoe field.

For window cutting DI engineers used one trip hydraulic type whipstock for 5-1/2” casing. For such job it was used a double mill with OD=121.5 mm. During the window cutting mill wear lost less than 1.0 mm.

Using the whipstock with a small angle of deviation (only 2.0 degrees) it was obtained the window with more elongated shape. This enabled to use more rigid BHA for further drilling.

Work performed at the proper level. Customer expectations are fully satisfied!