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Petrosys Group

Petrosys is the industry leader in mapping, surface modeling and data management software solutions – delivering direct connectivity with the E&P industry’s most popular exploration, production and GIS data sources. Petrosys produces high quality maps and surface models. It manages, edits, and analyses the underlying information including the specialised seismic, well and geoscience data used in the search for oil and gas. Geoscientists, data managers and engineers at more than 300 sites worldwide use Petrosys software as an essential tool for basin and field interpretation, to enhance enterprise data management and to help make better decisions.

Corporate Structure

Petrosys Pty Ltd, the parent company in the Petrosys group, is a privately-owned company based in Adelaide, South Australia, where Petrosys was originally founded in 1984.

Petrosys supports its global customer base via its Australian parent company and its wholly-owned subsidiaries, including:

  • Petrosys USA, Inc (office: Houston);
  • Petrosys Canada, Inc (office: Calgary);
  • Petrosys Europe Limited (office: Glasgow); and
  • Petrosys Asia Sdn Bhd (office: Kuala Lumpur).

Executive Management Team and Board Members

Executive Management:

Ian Little
Ian Little
Chief Executive Officer
Ian is a Chartered Accountant with over 30 years experience in the energy industry, having formerly had roles with the Shell Group, and several natural gas pipeline companies. Prior to his current appointment, he was for twelve years the Managing Director of the largest natural gas distributor in Australia, being the ASX-listed Envestra Group (now Australian Gas Networks).
Ian is a Fellow of the Institute of Chartered Accountants (Australia), a member of the Australian Institute of Company Directors, has a Bachelor of Commerce and Administration and a Masters of Business Administration.
He has held senior industry and community roles, including being Chairs of the Australian Gas Industry Trust (the Australian member body for the International Gas Union), the Advisory Board for the University of South Australia Business School, and the Adelaide Botanical Gardens, the Deputy Chairman of the Energy Supply Association of Australia, and directorships of the Phoenix Society in Adelaide and the Australian superannuation fund, EquipSuper.
He was appointed to his current role with the Petrosys Group in July, 2015.
Volker Hirsinger
Dr Volker Hirsinger
Executive Director, Vice President – Americas
Volker is the founder of the Petrosys Group (1984), the former Chief Executive Officer (until July, 2015), and currently is the Vice President responsible for the Group’s US, Canadian, Central and Latin American operations based in Houston.
He holds a Bachelor of Science (Hons) and PhD in Structural Geology.
Volker has taken a central role in the development of Petrosys’s software products as well as an active role in the Group’s business growth and wider industry activities, including serving as a member of the Board of the US-based PPDM from 2010-13.
Prior to founding Petrosys, Dr Hirsinger held senior geoscience positions with Australian resource companies Western Mining, Woodside Petroleum and Santos.
Michael Brumby
Michael Brumby
Executive Director, Business Development Manager, Middle East, Asia Pacific
Mike holds a Bachelor of Science (Hons) in Geophysics and has been with the Petrosys Group since 1992 in a range of sales, business development and support roles extending across Asia and the Middle East, as well as in Australia. He is currently located at our office in Perth.
He was formerly with Western Mining as a geoscientist in various exploration roles.
Jonathan Drake
Jonathan Drake
Chief Financial Officer, General Counsel and Company Secretary
Jonathan joined the Petrosys Group from the national legal firm, Minter Ellison in 2007.
He holds separate bachelor degrees in Law (with Honours) and Computer Science from the University of Adelaide, together with a Graduate Diploma in Legal Practice from the Law Society of South Australia and is a Graduate Member (Order of Merit) of the Australian Institute of Company Directors.
Jonathan assumed his current position in 2013 and is responsible for the management of commercial, accounting, and IT systems to support the global activities of the Petrosys business.
He is the Group’s legal advisor and is responsible for oversight of corporate governance, risk management and secretarial matters. He also manages the Human Resources function and marketing communications activities.
Mark Andersen
Mark Anderson
Chief Development Officer
Mark joined the Petrosys Group in its very early years (1989), starting as a “C developer” working on the then product line using HP Unix operating systems, progressing over the years with work on virtually all aspects of the Group’s software developments, including transitioning to C++ development in the late 90’s. His experience covers programming, system analysis and project manager roles.
He holds a Bachelor in Computer Science from the University of Adelaide.
Mark is currently responsible for the planning and execution of the development of Petrosys’s current and prospective software product, working with his highly qualified and experienced technical team at the Group’s Head Office in Adelaide.
Scott Tidemann
Scott Tidemann
Vice President – Middle East, Australia, Asia Pacific
Scott joined the Petrosys Group in 2001 and is currently responsible for Business Development, customer support and training activities across Australia, Asia Pacific and the Middle East.
He has a Bachelor of Arts specialising in geology and geography from the University of Adelaide with some 20 years global experience in the E&P software and data management sector, having previously worked for a number of Schlumberger companies.
He has been involved in a wide range of projects, including the development of web based stochastic resource portfolio management (“Prospects & Leads”) system; data management site audits to road map future system developments, and establishing a market for “tNavigator” reservoir simulation technology in the Pacific region.
Scott has extensive experience in a range of oil and gas exploration and production technology/service businesses, including software support, service delivery, training, data & information management, project implementation & management, software development, sales & marketing, and client account management.
Nathan Balls
Nathan Balls
Vice President – Europe, Russia and Africa
Nathan joined the Petrosys Group in 1994, establishing its UK entity Petrosys Europe Ltd in Scotland and was responsible for the growth and expansion of the Petrosys Europe regional base.
As Vice President he is currently responsible for operations on behalf of Petrosys in Europe, Russia and Africa, which include; business development & client account management, software support, training & consulting and project management, as well as local operational obligations.
He graduated from Middlesex University in London with a BSc. (Hons) in Geography & Geology and has nearly 30 years’ experience working in the Oil and Gas sector. He began his career with BP working as a Computer Geologist specialising in a variety of geotechnical applications. He also worked with Enterprise Oil as a mapping specialist on North Sea Equity re-determination projects.
Nathan is part of the Petrosys senior management team which supports the strategic planning responsibilities of the board and CEO. Special projects currently include leading the technical side of the Petrel Mapping Module by Petrosys, with Schlumberger.


Volker Hirsinger
Dr Volker Hirsinger
Executive Director, Vice President – Americas

See Executive Management summary above.

Michael Trenerry
Michael is a non-executive director and lawyer, having been a Partner with the Adelaide-based law firm, Bonnin & Partners for 20 years. He has been an advisor to Petrosys since its formation and a non-executive director of the Group since 2005. He was appointed Chairman in April, 2014.
Michael is founder and principal of the business advisory firm, Blueprint Australia.
Mr Trenerry holds a Bachelor of Laws from the University of Adelaide.
Craig Farrow
Craig Farrow
Non-executive Director
Craig is a Fellow of Chartered Accountants Australia New Zealand (CAANZ), Australian Institute of Company Directors (AICD) and Australian Institute of Management (AIM), whilst also a Certified Practising Manager and holds a Diploma of Financial Services.
Craig was a founding Partner, and currently Chairs, the accounting firm Brentnalls.
He was appointed a director of the Institute of Chartered Accountants in Australia (ICAA) in January, 2008, became Deputy President of the Institute in 2011 and subsequently the President in 2012. As Executive Chair of CAANZ (late 2012 through early 2014), Craig was instrumental in the merger between the foremost professional accounting bodies in Australia and New Zealand (ICAA and NZICA).
Craig was involved in the foundation of M2 Communications Group in 1999, and was appointed Chairman in 2006. The M2 Group merged with Vocus Communications in February 2016 and he is currently the Deputy Chairman of the ASX-listed Group.
Craig currently holds directorships and management advisory roles across the telecommunications, technology and energy, agribusiness, software and property sectors, including being a director of the Bulletproof Group, and chairman of Murray River Organics Ltd, Australian Independent Rural Retailers and the Adelaide-based engineering Group, Tonkin Consulting.
Michael Brumby
Michael Brumby
Executive Director, Business Development Manager, Middle East, Asia Pacific
See Executive Management summary above.