What is Klinkenberg correction in instrumentation?
In petroleum engineering, a Klinkenberg correction is a procedure for calibration of permeability data obtained from a minipermeameter device. A more accurate correction factor can be obtained using Knudsen correction.
What is the feasibility of Klinkenberg linear function of reciprocal pressure?
The feasibility of Klinkenberg linear function of the reciprocal pressure depends on the Knudsen number. For Knudsen numbers from 0.01 to 0.1 the Klinkenberg approach is acceptable. Permeability is measured in the laboratory by encasing a core plug of known length and diameter in an air-tight sleeve (the Hassler Sleeve).
What is the Klinkenberg correction for low permeability sandstone?
In low-permeability sandstones, permeability to water ( kw) is systematically less than the Klinkenberg-corrected permeability ( kL ). A correction equation based on >100 samples with a permeability range of 0.0001< kL <1 md is kw = kL1.32.
What does the value of KL obtained after applying the correction represent?
The value of kL obtained after applying the correction represents the permeability to a gas at infinite pressure or to a liquid that does not react with the component minerals of the rock. The clays or other materials coating grain surfaces can be sensitive to pore fluid.
In petroleum engineering, a Klinkenberg correction is a procedure for calibration of permeability data obtained from a minipermeameter device. Permeability is measured in the laboratory by encasing a core plug of known length and diameter in an air-tight sleeve (the Hasseler Sleeve).
What is the Klinkenberg correction for nitrogen gas?
When using nitrogen gas for core plug measurements, the Klinkenberg correction is usually necessary due to the so-called Klinkenberg gas slippage effect. This takes place when the pore space approaches the mean free path of the gas
What is the Klinkenberg theory of interaction?
Theory. When Klinkenberg defined the interactions to be considered, he supposed the existence of a layer (sometimes called Knudsen layer), thinner than molecular mean free path, adjacent to the pore’s wall where only molecules-wall collisions would occur and collisions among molecules could be ignored.