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LIVE WEBINAR – Evaluating Seals: Determining the Hydrocarbon Retention Potential of Caprocks

Tuesday, 1 December, 2020 @ 11:00 am - 12:00 pm (Australia/Perth time)

Free – $10.00

To view the event video and associated handouts (if any), please either log in to your active PESA membership account or enter the event password you received when you registered for this event.

Guest Speaker(s): John Kaldi

John Kaldi is an Emeritus Professor of Petroleum Geology and Engineering at the Australian School of Petroleum and Energy Resources (ASPER), University of Adelaide, is a CO2CRC Distinguished Scientist and holds the South Australia State Chair in Carbon Capture & Storage (CCS). He is also an Adjunct Professor at Institut Teknologi Bandung (ITB), Indonesia, and a Visiting Professor at Universiti Teknologi Petronas (UTP) in Malaysia. John received his Bachelors and Master’s degrees in geology from Queens College, City University of New York, and a PhD in Geology from Cambridge University in the UK. His career includes 18 years in the Petroleum Industry in both technical and managerial roles with Shell, Arco & Vico. John served as Distinguished Lecturer for various professional organisations, including SPE, AAPG, the Indonesian Petroleum Association (IPA) and the Petroleum Exploration Association of Australia (PESA). He has been the author and presenter of over 150 journal articles and technical conference papers.

Kindly supported by Rock Flow dynamics


This live webinar will take place at:

11am              – Perth
12.30pm        – Darwin
1pm                – Brisbane
1:30pm          – Adelaide
2pm                – Canberra, Hobart, Melbourne, Sydney

Use the calendar link on this page to add this event in to your own calendar at the correct local time for your location.

Tickets are free for members (please log in to see this) and $10 for non members.

Please buy your tickets and immediately follow the link in the ticket e-mail (not the calendar invite or this webpage, which is just generic and not event specific) to set up your registration with the webinar software well in advance of the time of the talk. Once registered with the webinar software you will receive a reminder e-mail 1 hour beforehand.



Evaluating Seals: Determining the Hydrocarbon Retention Potential of Caprocks

Presented by John Kaldi



The accumulation of hydrocarbons requires a porous reservoir overlain by an impermeable caprock or seal. The importance of the caprock is that it provides containment of buoyant hydrocarbon. Determining which seals have the potential to trap economically viable hydrocarbon accumulations, versus those that hold sub-economic volumes, has become an important aspect of evaluating both basin-wide petroleum systems and field scale prospects. Reducing the uncertainties associated with the evaluation of seals can be done by understanding the seal potential of the seal. Seal potential is defined as the 1) seal capacity, 2) seal geometry and 3) seal integrity of the caprock. Seal capacity refers to the hydrocarbon column height that the caprock can retain before capillary forces allow the migration of the hydrocarbon into and possibly through the caprock. Seal geometry refers to the thickness and lateral extent of the caprock. The caprock must have sufficient lateral extent to cover whatever structural, or stratigraphic trap is trapping the hydrocarbon accumulation. In addition, it must be thick enough to maintain an effective seal across any faults that displace it. Seal integrity refers to geomechanical properties of the caprock. These properties, controlled by lithology, thickness, ductility and fracture density, are determined by microscopic and macroscopic analyses of the caprock and analyses of regional, local and possible induced stress fields. Case studies from the Gulf of Papua and offshore northwest Java demonstrate the application of seal potential methodology. In a more topical sense, determining the viability of caprocks for the retention of CO2 is a critical element in the selection of sites for safe CO2 injection and secure storage in commercial scale carbon capture and storage (CCS) projects.


Tuesday, 1 December, 2020
11:00 am - 12:00 pm
(Australia/Perth time)
Free – $10.00
Event Categories:
  • Venue

    The internet Australia

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