Event Date Time Duration Registration Closing Date Registration Closing Time
Wed 5th Aug 2020
12 noon 1 and a half hours 5th Aug 2020 10:00 AM

Registration Price:

Free Event


Addressing the production chemistry of enhanced recovery in oil and gas operations

Dr. Andrew G. Shepherd

Shell Australia Regional Discipline Lead Production Chemistry


Andrew has worked for  Shell since 2006  in Europe ( Shell Global Solutions, Southern North Sea, Schoonebeek Oil, Sour Gas assets), Malaysia (Sabah deep water and EOR) and Australia (Prelude and QGC assets).

He has participated in many different phases of the production asset lifecycle, project support, research and development and technology deployment.

He is currently the Shell Australia Production Chemistry Regional Discipline Lead and Technical Authority 1 for Integrated Gas and Deepwater and the contract owner for all chemicals and laboratory services for Shell QGC.

Prior to joining Shell Andrew worked in the oilfield service sector and engineering vendors. Andrew has a Phd in Engineering and Physical Sciences from Heriot Watt University, Edinburgh.

He has been a member of SPE since 2002. He has volunteered in the SPE as conference co-chair (IPTC), workshop committees (Global R&D, production operations), technical chair reviews and  young professional. He is also a fellow of the Royal Society UK.


Many oil and gas producing fields are reaching late production life. As a consequence, assets are faced with a number of challenges that impact well, reservoir and facilities management. Most often than not, these strategies were not considered during greenfield design.

In the present work we will firstly provide a brief overview of the enhanced oil and gas options available for mature fields. Whilst some aspects of these technologies are not new, the deployment is very much dependant on favourable macro-economic scenarios. Production chemistry has contributed to advancing the state of the art namely with chemical flooding (polymer, surfactant, or combination), gas flooding (CO2, air, nitrogen), foam, steam injection and even advanced waterflooding have been the subject of intense research, projects and field trials and applications.

The impact of enhanced oil or gas recovery needs indeed to be examined from the production chemistry perspective from project to start-up to steady state operations. For instance, HSSE implications, since the new formulations need to adhere to local and sometimes international legislation. There are process implications, since, e.g. sourcing of feedstocks and logistics may be complex. There are compatibility issues to be addressed. Addition of chemicals and or gas injection may result in phase behavior problems such as separation/emulsions or precipitation of unwanted solids, such as asphaltenes or scale. Product compatibility with the existing metallurgy is also a necessary pre-check during front-end engineering.

The presentation will address some literature and project/operational cases where the interfaces of production chemistry in enhanced recovery operations played a significant role and provide a number of lessons learned for reflection and discussion.



Venue Information

Zoom Rooms


Lucie at SPE Qld