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Fractured Reservoirs and other rocks!


..in the Middle East, West of the Shetlands, the USA.
£50
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Tuesday, January 23, 2018
London
The Geological Society

The fact that fractures are common in the subsurface have been known for at least the last century but the practice of treating reservoirs as fractured rock masses has been extremely slow in becoming a standard industry practice, despite that fact that fields with such reservoirs are known from SE Asia, the carbonates of the Middle East and much more recently, the basement West of the Shetlands.

Why is this? As a primer, I refer you to Nelson’s book “The Geological Analysis of Naturally Fractured Reservoirs” which has an extremely detailed account of the complexities involved; getting beyond the Foreword is a triumph! Or, more recently, to an AAPG paper by folk from Statoil’s Research Centre who said:

(I paraphrase)!)
• You can’t predict the spatial distribution of open fractures in the subsurface based on a few cores, image logs, seismic etc.
• Flow patterns can be very complex and difficult to predict; in-flow to a few wells doesn’t change this.
• Simulation of dual-porosity (matrix + fractures) systems is very difficult and tends to be run on coarse grids, reducing predictive power.
• Analogues are of limited use: maybe best avoided?
All very different to normal sandstone reservoirs…..

In addition, but on different scales of both dimension and time, it is believed that micro-fractures control basin-wide vertical migration of petroleum.

Our aim for our January event is to understand some current examples - we hope from the carbonates of the Middle East, the basement West of the Shetlands and also the shales of the USA – and the underpinning measurements and analyses which enable us to understand fracture-dominated rock systems.

If you would like to contribute, please drop me an e-mail.

David Bamford

Agenda

 
8:30 Welcome & Introduction: followed by SESSION 1:
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10:00 Speaker from -
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10:30 Speaker from -
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11:00 Coffee & Tea; Exhibits
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11:30 Session 2
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13:00 Lunch & Exhibits, followed by SESSION 3:
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Oil company




14:00 Speaker from -
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14:30 Speaker from -
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15:00 Speaker from -
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15:30 Close

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