scholarly journals Sandstone Diagenesis in Sediment–lava Sequences: Exceptional Examples of Volcanically Driven Diagenetic Compartmentalization in Dune Valley, Huab Outliers, Nw Namibia

2017 ◽  
Vol 87 (12) ◽  
pp. 1314-1335 ◽  
Author(s):  
Clayton Grove ◽  
Dougal A. Jerram ◽  
Jon G. Gluyas ◽  
Richard J. Brown
Keyword(s):  
Sandstone Diagenesis

Oilfield waters and sandstone diagenesis

1987 ◽  
Vol 2 (5-6) ◽  
pp. 613-619 ◽  
Author(s):  
Ronald C. Surdam ◽  
Donald B. MacGowan
Keyword(s):  
Sandstone Diagenesis

External forcing controls on sandstone diagenesis

2020 ◽  
Author(s):  
L. Caracciolo ◽  
M. Janssen ◽  
D. Ravidà ◽  
L. Bonnell ◽  
W. Heins ◽  
...  
Keyword(s):  
External Forcing ◽  
Sandstone Diagenesis

Some applications of clay mineralogy to reservoir description

Clay Minerals ◽  
1986 ◽  
Vol 21 (4) ◽  
pp. 811-826 ◽  
Author(s):  
A. Hurst ◽  
J. S. Archer
Keyword(s):  
Clay Mineralogy ◽  
Sand Production ◽  
Water Contact ◽  
Reservoir Evaluation ◽  
Sandstone Diagenesis ◽  
Porosity And Permeability ◽  
Neutron Porosity ◽  
Wireline Logs ◽  
Formation Resistivity ◽  
Reservoir Description

AbstractStudy of sandstone diagenesis provides information about the origin, texture, distribution and composition of clay minerals, which in turn is used in reservoir description. Three examples of the use of clay mineralogy in reservoir description are given. (1) Kaolinite commonly forms pore-filling cements which are pervasive in specific sandstone intervals. It is shown that water-zone kaolinization homogenizes and lowers the porosity and permeability relative to the oil zone; in a reservoir model different Ø/Krelationships are defined above and below the oil-water contact. (2) An occurrence of chlorite in dish-structured horizons is shown to increase horizontal permeability and decrease formation resistivity. The sensitivity of the neutron porosity log to the chlorite cement reduces the usefulness of the log for porosity evaluation. Uncritical application of wireline logs to define reservoir parameters can give pessimistic reservoir evaluation. (3) Sand production can be related to wettability, which in turn is strongly influenced by clay mineralogy. A perforation strategy to minimize sand production may then be based on knowledge of the clay mineralogy of a reservoir.

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