Dynamic permeability and borehole Stoneley waves: A simplified Biot–Rosenbaum model
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چکیده
منابع مشابه
DYNAMIC PERMEABILITY AND BOREHOLE STONELEY WAVES: A SIMPLIFIED BlOT-ROSENBAUM MODEL
Stoneley waves in permeable boreholes are diagnostic of formation permeability because their propagation is affected by the dynamic fluid flow at the borehole wall. We characterize this flow using the concept of dynamic permeability. We examined the applicability of the dynamic permeability to porous media by applying it to a single fracture case and found that it agrees excellently with the fr...
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An important application of borehole acoustic logging is the determination of formation permeability using Stoneley waves. Heterogeneous permeable structures, such as fractures, sand-shale sequences, etc., are commonly encountered in acoustic logging. The purpose of this study is to investigate the effects of the permeability heterogeneities on the borehole Stoneley wave propagation, We have st...
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The propagation of borehole Stoneley waves is strongly correlated with permeability of the formation. Previous studies primarily focused on the situation where the permeability is homogeneously distributed in the formation. In many in-situ situations, however, the permeability distribution of the formation is heterogeneous, due to effects such as a damaged zone around the borehole, random varia...
متن کاملBorehole Stoneley Wave Propagation across Heterogeneous and Permeable Structures
This study investigates the propagation of borehole Stoneley waves across heterogeneous and permeable structures. By modeling the structure as a zone intersecting the borehole, a simple one-dimensional theory is formulated to treat the interaction of the Stoneley wave with the structure. This is possible because the Stoneley wave is a guided wave, with no geometric spreading as it propagates al...
متن کاملBorehole Stoneley Wave Propagation across Permeable Structures: Comparison between Theory
The attenuation of borehole Stoneley waves across a permeable structure (e.g., fractures or fracture zone) is correlated with the permeability of the structure. Using a simplified Biot theory, the structure can be modelled as a permeable porous layer intersecting the borehole. In order to study the effect of such a structure on Stoneley waves and to evaluate the theoretical model, we performed ...
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ژورنال
عنوان ژورنال: The Journal of the Acoustical Society of America
سال: 1991
ISSN: 0001-4966
DOI: 10.1121/1.401904