About Us | Oil & Drilling Company In Alberta & Calgary | Nelsen

NTI is headquartered in Leduc, AB with a manufacturing facility and office. NTI offers competitive services to the land based drilling rig industry. Our services include engineering, project management, drafting, manufacturing, inspections and certification. NTI’s operations are performed under its registered Quality Management System to ISO 9001:2015 requirements. Our team consists of qualified and experienced staff that are registered with APEGA. Our technical staff have completed the Canadian Welding Bureau Visual weld inspection certification programs and maintain H2S Alive, Fall Protection for Rig Work and Standard First Aid – Level C.

NTI is committed to advancing technology for land based drilling rigs. Our industry proven engineering capabilities combined with strong resources create success.


We use the standards below as applicable:

API 4F – specification for drilling and well servicing structures.

API 4G – operation, inspection, maintenance and repair of drilling and well servicing structures.

API 7K – drilling and well servicing equipment.

API 8B – recommended practice for procedures for inspections, maintenance, repair and remanufacture of hoisting equipment

API 8C – drilling and production hoisting.

API 9B – recommended practice for application, cure and use of wire rope for oil field service.

API 16A – Specification for Drill-through Equipment

ASME B31.3 – process piping.

CAODC Recommended Practices.

CSA B51 – boiler, pressure vessel and pressure piping code.

ISO 9001 – quality management system requirements.

Blair Nelsen, P.Eng


James Chisholm, P.Eng


Eli Weisberg, E.I.T.


Dhruv Diwanji Operations Manager


Stacey Linklater Drafting Technician