- Branche: Oil & gas
- Number of terms: 8814
- Number of blossaries: 0
- Company Profile:
Pertaining to a rock that is incapable of transmitting fluids because of low permeability. Shale has a high porosity, but its pores are small and disconnected, so it is relatively impermeable. Impermeable rocks are desirable sealing rocks or cap rocks for reservoirs because hydrocarbons cannot pass through them readily.
Industry:Oil & gas
Pertaining to a material that can undergo stress, deform, and then recover and return to its original shape after the stress ceases. Once stress exceeds the yield stress or elastic limit of a material, permanent deformation occurs and the material will not return to its original shape once the stress is removed. In some materials, including rocks, elastic behavior depends on the temperature and the duration of the stress as well as its intensity.
Industry:Oil & gas
Pertaining to a hydrocarbon source rock that has generated as much hydrocarbon as possible and is becoming thermally altered.
Industry:Oil & gas
Pertaining to a hydrocarbon source rock that has not fully entered optimal conditions for generation.
Industry:Oil & gas
Pertaining to a hydrocarbon source rock that has generated as much hydrocarbon as possible and is becoming thermally altered.
Industry:Oil & gas
Pertaining to a depositional environment or organisms from a marsh. It also refers to the type of environment in which palustrine sediments can accumulate.
Industry:Oil & gas
Permeability that varies with direction of flow through the porous medium. Lateral permeability contrast can be particularly important in fractured formations, where effective permeability in the direction of the fractures may be many times greater than the matrix permeability. If the permeability in one direction is significantly more than in the other, the flow pattern may more closely approximate linear flow than radial flow. This can be detected from well-test data. <br><br>Likewise, laminations in most clastic formations cause the permeability normal to the bedding plane to be less than the lateral permeability parallel to bedding. This is called vertical to horizontal permeability anisotropy.
Industry:Oil & gas
