Techlog geome geomechanics chanics – Fractur Fracturee gradient gradient Saad Kisra & Shun Chang (Kenny) Wang Montpellier Technology Center
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Fracture Gradient Module Fracture Gradient is calculated with the following equation. There are several empirical correlations to calculate the K.
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1. 2.
K0 (Constant K): Input a constant K directly. Eaton: Input effective Poisson ratio by a curve or constant values by zones then compute K.
3.
Eaton – Gulf coast: calculate effective Poisson ratio with empirical correlation from Gulf coast then compute K. Eaton – Deep water Gulf of Mexico: calculate effective Poisson ratio with empirical correlation from deep water area of Gulf of Mexico then compute K. Mathews and Kelly: directly calculate K with empirical correlation from Mathews and Kelly.
4. 5.
FG Eaton - Inputs Input an effective Poisson ratio by a curve. Using dynamic elastic Poisson ratio may significantly underestimate the FG.
If a curve of Poisson ratio is not provided, input constant values by zone here.
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FG Constant K0 - Inputs You can also switch to “input by variable” and select a curve as input. S c h l u m b e r g e r P r i v a t e
By defaut, K0 is input as constant values by zones.
FG Constant K0
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Left-click this name to add a wheel to adjust this value by a wheel.
