Go to  Advanced Search

Please note that starting Tuesday, October 13th we will be making a number of modifications to integrate cIRcle into the new UBC Library Open Collections service. This may result in some temporary outages next week. Please keep this in mind when planning your work schedule. Apologies for any inconvenience.

Permeability of Limestone-Dolomite Composite Fracture Surfaces

Show full item record

Files in this item

Files Size Format Description   View
Van_ de_Reep_Peter_John_Permeability_of_ Limestone-Dolomite_Fracture_Surfaces_UBC_2009_EOSC_Honours_Thesis.pdf.pdf 1.513Mb Adobe Portable Document Format   View/Open
Title: Permeability of Limestone-Dolomite Composite Fracture Surfaces
Author: Van de Reep, Peter John
Issue Date: 2009-04-08
Publicly Available in cIRcle 2009-04-09
Citation: Van de Reep, Peter John. 2009. Permeability of Limestone-Dolomite Composite Fracture Surfaces. Undergraduate Honours Thesis. Department of Earth and Ocean Sciences. University of British Columbia. http://hdl.handle.net/2429/7012
Abstract: The transport properties of fault zones are critically important in predicting subsurface fluid behavior in deformed rocks and understanding fold and thrust belts. Limestone-dolomite composite rocks are common components of fold and thrust belts and are also productive reservoir rocks for hydrocarbons. This study develops a methodology for measuring the permeability of experimentally induced fracture surfaces in limestone-dolomite composite rocks. Cores of rocks from the Mount Head Formation and the Fairholme Group of southern Alberta were deformed at a confining pressure of 25 MPa in a triaxial rock press. Fluid ports were drilled in the deformed cores to ensure direct fluid access to the fracture surface. The transient pulse decay method was used to determine the permeability of the fractures. Experimental difficulties resulted in only two permeabilities being derived from experimentation. Modeling of the transient pulse decay for the fracture surfaces shows permeabilities of 4•10-17 m2 for predominantly dolomite and 8•10-17 m2 for dolomitic limestone. Lower permeability in the dolomite end member is thought to be due to very fine comminution in the fracture gouge caused by highly focused strain with little distributed strain outside of the fracture itself. Increasing heterogeneity in a rock increases the distributed strain, causing an increase in permeability. This study serves as an initial development in the ability to measure the permeability of fracture surfaces. Increasing precision and accuracy of measurements is expected with further research.
Affiliation: Science, Faculty ofEarth and Ocean Sciences, Department of
URI: http://hdl.handle.net/2429/7012
Peer Review Status: Unreviewed
Scholarly Level: Undergraduate

This item appears in the following Collection(s)

Show full item record

UBC Library
1961 East Mall
Vancouver, B.C.
Canada V6T 1Z1
Tel: 604-822-6375
Fax: 604-822-3893