Fractures, Geothermal
Steven Ogilvie
Wettability & Recovery in Fractured Chalks

This blog addresses why wettability is important in the recovery of oil from fractured chalks.

Wettability & Recovery in Fractured Chalks
Steven Ogilvie
Natural Fracture Types in Fractured Reservoirs

There are 2 basic types of natural fractures that need to be studied when characterising naturally fractured reservoirs - whether it be a geothermal or hydrocarbon reservoir. These are extension and shear fractures.

Natural Fracture Types in Fractured Reservoirs
Faults, Folds
Steven Ogilvie
Thrust systems at different scales

This blog examines some key features of thrust systems with an example from seismic data offshore Namibia and from a hand specimen onshore UK.

Thrust systems at different scales
Fractures, joints
Steven Ogilvie
Deformation band contained Joints

This blog looks at joints contained within zones of deformation bands - how they form and if they are important or not.

Deformation band contained Joints
Fractures
Steven Ogilvie
Geomechanics approach to fracture prediction

This blog describes the value of a geomechanical approach to fracture prediction; for example thin beds often have more fractures than thick beds.

Geomechanics approach to fracture prediction

Hopeman Sandstone

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Soft-sediment folds

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Soft-sediment folds

In this blog we look at some examples of non tectonic folds i.e., those that have formed as a result of soft-sediment deformation.

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Deformation Bands in High Porosity Sandstones

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Deformation Bands in High Porosity Sandstones

Deformation Bands are fault like structures that drastically reduce the porosity and permeability of sandstones.

Here we focus upon cataclastic (grain size reduction) deformation bands, their impact upon hydrocarbon production and exploration and some ways to predict them.