Improtance of completion design considerations for complex, hostile, and HPHT wells in frontier areas

摘要

As upstream oil and gas exploration and production companies search for new opportunities, much deeper wells are being drilled and completed. In addition to greater depths, an increasing number of wells are being drilled and completed in much more hostile downhole environments. These very complex wells are frequently drilled in frontier areas around the world, including the Western and Northern Canadian foothills and coastal areas. Where pressures exceed 10,000 psi (69 MPa) and temperatures surpass 300 deg-F (149 deg), wells are generally termed High-Pressure/High-Temperature (HPHT) completions.