Web24 Jun 2015 · Variables calculated were primary porosity, secondary-porosity index, dolomite, sand, anhydrite, and shale. Fig. 8 presents a comparison of the computed and the core porosity values. The permeability, S w, and S wi were calculated from the logs on the basis of relationships derived from core data. WebGlossary:Secondary porosity. Non intergranular porosity such as fractures, vugs, etc. that may contribute sharply to permeability but may not significantly raise the porosity level.

Fracture Permeability - an overview ScienceDirect Topics

Web1. What is the reservoir quality index (RQI) of a 0.1-mD permeability and 0.15 fractional porosity reservoir? What value does the RQI assume when the porosity decreases to one-half of its original value and the permeability–porosity relationship is given by K / K o = (ϕ / ϕ o) 7, in which K o and ϕ o refer to the original permeability and porosity values, respectively. Websecondary porosity index. 1. n. [Formation Evaluation] An indicator of the porosity that does not contribute to a sonic measurement of interval transit time. The transit time is little … easter brunch in marin county

Glossary:Secondary porosity - PetroWiki

WebFracture porosity and fracture permeability are covered as well as secondary porosity index and Pickett plots for finding the cementation exponent, M. Sonic/density or sonic/neutron porosity overlay … WebThe analysis of secondary porosity from electrical images was made in 4 wells distributed in the North, Center, and South of the structure, and covering all the producing formations. Fig. 6 Secondary and matrix porosity calculated from a borehole electrical image. Tracks: (1) Depth, (2) Shaded red is secondary porosity, shaded light blue is ... WebSecondary porosity A subsequent or separate porosity system in a rock, often enhancing overall porosity of a rock. This can be a result of chemical leaching of minerals or the … cubs tattoo sleeve