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HRI Assurance Services

About Us


Horizon Resources International (HRI) is an engineering and technical consultancy in the oil, gas, and mineral drilling and production industries providing rig inspections, compliance audits, training, engineering, commissioning, maintenance and environmental management.

HRI also has had project engineering teams in place on deepwater drillships and semisubmersible drilling rig construction projects in Singapore and Korea and provides engineering services throughout Europe, Asia and the USA.

Principal Staff

General Manager

Lachlan Nally

Lachlan has been with HRI since 2012. He holds a Bachelor of Science (Geology and Resource Economics) with Honours from the University of Western Australia.  He has broad industry experience, having prevously been employed as an Exploration Geologist, Risk Engineer and Project Engineer (Commissioning).  Lachlan also holds the position of General Manager for Welltrain,  Asia Pacific’s leading organisation in Well Control Training and Certification.  

Director / Senior Drilling Engineer

S.P. (Steve) Nally

Steve has been with HRI since 2006. He holds a masters degree in engineering science from UNSW, a bachelor of business degree majoring in logistics and operations management, and holds an electrical licence in both Western Australia and Queensland. His 27 years’ experience in the oil & gas industry includes roles as rig electrician, toolpusher, equipment surveyor, company representative and drilling engineer.

Operations Manager

Peter Ashe

Peter holds a chemistry degree from QUT and a Graduate Diploma in Management. He is an environmental chemist with over 25 years experience in the environmental field. He has broad industry as well as government and regulator experience. He specialises in waste management, environmental compliance and incident management. He has over 20 years experience in the research and practical application of bioremediation technologies particularly in relation to the treatment of waste drilling fluids. 

Technical Lead

Chris Wilson

Chris is an experienced operational executive and technical engineer with skills that extend from the rig floor to the board room. He has a wide variety of experience in the field from Wellsite Geology through to Senior Drilling Supervisor on a variety of onshore and offshore scenarios. A Senior Drilling Engineer through to Drilling Superintendent for complex ERD, HTHP and remote location wells. Chris is owner and Director of a medium sized Drilling Engineering Consultancy – Labrador Petro-Management and Australia’s largest Drilling and Well Services training company (Welltrain).  Chris is also the owner of Total Depth Drilling Solutions as an independent consultant.