Wellbore Tortuosity
Wellbore Tortuosity is a ratio of actual distance between two point in a wellbore and the straight line distance between the same two points. Inclination and azimuth measurements define the profile of the well whereas tortuosity is a measure of crookedness and indicates the well quality. High wellbore tortuosity not only affect the drilling process, drilling efficiency and casing running but also impact effectiveness of completions and production equipment in achieving reservoir return rates.
Dog leg severity (DLS) with measurements every 95 ft provide some insight into wellbore tortuosity but is insufficient to fully define it. Information acquired through tortuosity log help define wellbore shape and 3D visualization, facilitating in making critical decisions on well development and placement for artificial lift and other equipment in areas of low tortuosity. Collecting data at 1-ft intervals through tortuosity logs reveals areas of high side forces and high friction that won't be visible with standard MWD measurements carried out at every connection.