Pinchout:

Often so severe that the pinch out becomes a barrier or a seal.

Terms Related to Pinchout

• Permeability (of a reservoir rock)

  The ability of a rock to transmit fluid through the pore spaces. - a key influence on the rate of flow, movement and drainage of ...

• Absolute permeability

  A measure of the ability of a single fluid (such as water, gas, or oil) to flow through a rock formation when the formation is ...

• Relative permeability

  The ratio of effective permeability to absolute permeability. The relative permeability of rock to a single fluid is 1.0 when only that fluid is present, ...

• Effective permeability

  A measure of the ability of a single fluid to flow through a rock when another fluid is also present in the pore spaces. Compare ...

• Clay swelling

  A type of damage in which formation permeability is reduced because of the alteration of clay equilibrium. Clay swelling occurs when water-base filtrates from drilling, ...

• Formation damage

  The reduction of permeability in a reservoir rock caused by the invasion of drilling fluid and treating fluids to the section adjacent to the wellbore. ...

• Darcy

  N:a unit of measure of permeability. A porous medium has a permeability of 1 darcy when differential pressure of 1 atmosphere across a sample 1 ...