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In-situ stress characterization and applications (view source)
Revision as of 16:38, 25 August 2022
, 16:38, 25 August 2022→Extended Leak-off Test (XLOT)
The extended leak-off test (XLOT) is an extension of LOT and it is similar to fracking which involves propagating of a fracture by pumping fluids. However, XLOT does not determine the stresses orientation. [[:File:GeoWikiWriteOff2021-Tayyib-Figure13.png|Figure 13]] shows the recorded pressure during XLOT. The horizontal stresses values can be estimated as follow:
The extended leak-off test (XLOT) is an extension of LOT and it is similar to fracking which involves propagating of a fracture by pumping fluids. However, XLOT does not determine the stresses orientation. [[:File:GeoWikiWriteOff2021-Tayyib-Figure13.png|Figure 13]] shows the recorded pressure during XLOT. The horizontal stresses values can be estimated as follow:
:h = Plo
::<math>\sigma_h = Plo</math>
:H = 3Plo– Pr – Po
::<math>\sigma_H = 3Plo - Pr - Po</math>
Where Plo is the leak-off pressure.
Where Plo is the leak-off pressure.