Geomechanics and FracturingIn-Situ Stress and Rock Mechanics
Bulk Modulus from Lame Constant and Shear Modulus Formula
Bulk Modulus from Lame Constant and Shear Modulus calculates bulk modulus for in-situ stress and rock mechanics workflows in geomechanics and fracturing.
How engineers use this formula
Use this formula when the listed inputs (lambda, G) are known and the assumptions behind the cited in-situ stress and rock mechanics relationship match the engineering case being checked.
Assumptions
- Input values are representative for the well, reservoir, fluid, or equipment case being evaluated.
- The declared units match the field-unit constants used in the formula.
- The cited formula applies to the selected petroleum engineering workflow.
Limitations
- The calculation does not replace a full engineering model or operating procedure.
- Accuracy depends on the source correlation, assumptions, input quality, and unit consistency.
Common mistakes
- Mixing unit systems without converting the inputs.
- Using default example values as field recommendations.
- Applying the formula outside the source assumptions.
Default example
Using the default inputs, K equals 4,000,000 Pa.
lambdaPa
2000000
GPa
3000000
Inputs
lambda
PaLame Constant
G
PaShear Modulus
Outputs
K
Pa
Bulk Modulus
lambda
Pa
Lame Constant
G
Pa
Shear Modulus
Source and review
reviewedElastic constants relation for bulk modulus, PetroWiki
PetroWiki.org. Elastic constants relation for bulk modulus, Lame constant, and shear modulus.
SourceRelated formulas and calculators
Spherical Matrix Block Interporosity Flow Coefficient
Naturally Fractured Reservoirs