Journal
JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
Volume 78, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jngse.2020.103319
Keywords
Pressure-transient analysis; Shale gas reservoir; Slip flow; Knudsen diffusion; Fracture; Permeability; Nanopores; Kerogen
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Funding
- College of Petroleum Engineering and Geosciences (CPG) at King Fahd University of Petroleum and Minerals in Saudi Arabia
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The characteristics of shale formations are different from other typical sedimentary formations. They are stress-sensitive rocks with contained fluids subject to rapid adsorption and desorption activities. Importantly, the flow of fluids in shale reservoirs is pressure-dependent and of a non-Darcy nature. For these reasons, the typical pressure-transient analyses are not applicable to these low-permeability reservoirs. Although several modifications to conventional analyses have been proposed, there are still a number of gaps in the proper characterization of shale gas and oil reservoirs. In this research, we reviewed the literature on pressure-transient analysis in shale reservoirs, presented the limitations of the proposed methods, and suggested future research directions for improved interpretation of transient pressure data.
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