By J.H. Schön (Eds.)
'Physical homes of Rocks - a Workbook' is a symbiosis of a quick description of actual basics of rock houses (based on average experimental effects and correct theories and types) with a advisor for functional use of other theoretical options. For this goal a spouse site includes a collection of version dependent equations in excel worksheets for sensible software and coaching via the consumer to paintings together with his personal info (or to ''play'' to be able to display the consequences of assorted enter details and to illustrate the consequences of varied enter information in petrophysical paintings.
In distinctive chapters the matter of relationships among petrophysical parameters in keeping with a variety of version suggestions is gifted as a foundation for mixed interpretation. This half additionally includes the author's 'structured model'.
The workbook is because of the the greater than forty years adventure of the writer in educating at universities and commercial classes.
- Presents all useful proper houses of rock in a single volume
- Experimental and theoretical basics in a scientific framework
- Special specialize in relationships among properties
Read or Download Physical Properties of Rocks: A Workbook PDF
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Extra info for Physical Properties of Rocks: A Workbook
9 Porosity versus depth; trends for different lithologies. Data from a figure after Brown (1997). Argillaceous limestones have lower overall porosity and a faster rate of porosity loss than the clean carbonates at similar depths. Porosity decreases as the clay content of the limestone increases. 9 demonstrates: ● that porosity decrease is strongly influenced by mineralogy; 28 Physical Properties of Rocks ● that clay content increases deformation sensitivity and accelerates porosity loss; that (in the example) dolomite shows a higher porosity but a smaller porosity decrease than limestone; the dolomite is more porous but also more rigid than the limestone; that straight lines in the semilogarithmic plot indicate in a first approximation an exponential equation.
Data from Nagumo (1965). 4 Porosity as a function of depth and initial porosity. 80; the rock skeleton of the shale is softer than the sand rock skeleton. 7 Á 1024 m21 for sand. 5 describes the mechanical compaction process in a schematic diagram. Avseth et al. (2005) formulate as rules of thumb for compaction and following cementation: “(1) The depositional porosity of shale is normally higher than that of sand. , at shallow depths). ” The diagram refers to the compaction process. 5 Compaction process for sand and shale.
13). 1 md is generally considered the minimum for oil production (Lucia, 1999). 13 Permeability: mean magnitude ranges and tendencies. , 2000. 01À10 Ghawar (Ain Dar), Saudi Arabia Carbonate Source: Dandekar (2006). Permeability is a pore space property; therefore the main controlling factors are: ● ● porosity (connected porosity), and pore size and fracture width; permeability is proportional to several powers (%2) of pore size or fracture width. 13 illustrate the wide scale of permeability over more than 10 decades and some tendencies: ● ● for clastic sediments permeability increases with increasing grain size (which controls pore size).
Physical Properties of Rocks: A Workbook by J.H. Schön (Eds.)