Download Field Methods for Petroleum Geologists: A Guide to by Fakhry A. Assaad PDF

By Fakhry A. Assaad

Provides an creation to petroleum exploration tools, touching on either geophysical and geochemical innovations and the logistics of assorted drilling strategies and good logging equipment for oil and fuel exploration. the second one a part of the booklet specializes in utilizing those tools for petroleum exploration in the context of northern Africa. The geology of northern Africa is defined and automated lithographic correlation charts are offered and utilized to petroleum exploration objectives from the region.

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Additional resources for Field Methods for Petroleum Geologists: A Guide to Computerized Lithostratigraphic Correlation Charts Case Study: Northern Africa

Sample text

3 Gravimetric Survey geological structure of a reservoir rock in a certain area. The method(s) selected will depend on the type of information needed, the nature of the subsurface Variations in gravity depend upon lateral changes in the density of earth materials in the vicinity of the meamaterials, and the cultural interference. suring point. Many types of rocks have characteristic ranges of densities, which may differ from other types that are laterally adjacent. 2 Magnetic Survey the earth’s gravitational attraction at a particular site is a function of the density of the surface sediments A magnetic survey is primarily used to explore for oil and the underlying rock units.

26 The “S” curve indicates a possible vertical permeability (Courbe en “S” indiquant une perm`eabilit`e verticale possible) Fig. 23 Low permeability formation with low reservoir pressure (Formation a´ faible perm`eabilit`e avec grande faible pression de reservoir) 38 Fig. 27 (a) Low productivity and high damage (Faible productivit`e + grande endommagement) (b) A high productivity and high damage (Grande productivit`e + Grande endommagement) Fig. 29 (a–f) Typical diagrams of drill stem testing: (a) Tools unopened (Outil non ouvert).

10 Straddle packer test. After Kirkpatrick, courtesy Petroleum Engineer r r Shows of fluorescence in cuttings and core samples. Fig. 12 Schematic tool arrangement for procuring initial Identification of petroleum from electric log inter- closed-in pressure. Point C on chart is taken as reservoir pressure. Courtesy Johnson Testers pretations. 36 4 Drilling Technology in Petroleum Geology Fig. 13 Double Pressure charts – Anchor plugged Fig. A Selected Graphs of Drill Stem Testing in Different Reservoir Rocks and Interpretations (Figs.

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