The Design Criteria of Storage-Adjustable Transient Pulse Method for Large Range Permeability Measurement

Transient pulse method (TPM) originally introduced by Brace et al. is a theoretically well-established and widely used method. The advantages and limitations of this method for rock permeability measurement are discussed. The modified storage-adjustable TPM can develop the advantages and bypass the limitations so as to measure rock permeability in a large-scale range. The approximate solution is the preferred mathematic method because of the ease of data deduction. However, the systematic error associated with the approximate solution is involved with the limited situations of parameters β and γ. The design criteria are presented for optimizing the experimental configuration for a desired measuring precision and duration as well as ease of data deduction. Therefore, well application of the advanced storage-adjustable TPM can be prospected.