1 / 1

Pore Throat Size Controls Saturation and Permeability – Petrophysics Consultant & Training

All Integrated Petrophysics courses available in whole, part or re-assembled. Delivered via Zoom or similar. Live or canned sessions. These are the best petrophysics courses at the best rates<br><br>

21116
Download Presentation

Pore Throat Size Controls Saturation and Permeability – Petrophysics Consultant & Training

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Pore Throat Size Controls Saturation and Permeability – Petrophysics Consultant & Training Because pore size is a factor in saturation and permeability, it seems logical to use saturation- related parameters to predict permeability. This is not possible in all geological or petrophysical models. We instead acquire NMR logs, core analyze flow zones, and rock types to attempt to address permeability variations while ignoring what we already know for a more accurate prediction of permeability. The hydrocarbon pore volume is a better default prediction of intergranular permeability across different reservoir types, and different rock types than porosity and even saturation. Sw Swi should first be evaluated by fluid zones. Petrophysicists know that good rocks contain more hydrocarbon than bad rock at the same capillary Pressure (height), but they don't use it! For Saturation Height, Capillary Pressure Mercury Injection Data is (MCIP). Additionally, mercury data cannot be used to calculate Sw-Height in clayey, low-permeability rocks without Cation Exchange Capacity or Clay Bound Water corrections. A mercury experiment does not require a water phase to wet clays or fine pores. The mercury bulldozer can physically pierce clay-lined throats with its mercury bulldozer. Mercury data can be used to determine the size of pore openings for rock typing. This is particularly important in cases where Clay + Capillary Bound Water makes up a substantial fraction of total porosity. The 100% + difference between mercury data and air-brine HPVs for the same reservoir height is an indication of this. These mercury data are not able to provide a usefully accurate dmm-m scale wholerock storage capacity in rocks below 30mD or high CEC water shaly reservoirs. However, MCIP data left uncorrected for clay or capillary bound waters provides high HPV, which may be a better explanation for its continued usage. All Integrated Petrophysics consultant & training available in whole, part or re-assembled. Delivered via Zoom or similar. Live or canned sessions. These are the best petrophysics courses at the best rates

More Related