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Abstract

Summary

Oil production as well water and gas injection change the mechanical structure of hydrocarbon reservoirs leading to compaction, which has high impact on the reservoir quality. Compaction increases the grain contact adhesion and frictional sliding which are responsible for increasing rock stiffness and hysteresis. In addition, elastic moduli, such as Young modulus, are highly influenced by stress, fractures, and cracks. This work analyses how hysteresis depends on the elastic properties and petrophysical parameters through laboratory tests carried out on 05 sandstones and 03 carbonate core samples. The results indicated that hysteresis is severely dependent on depositional texture, and it is directly related to Young modulus and Bulk modulus. Tight rocks exhibited higher hysteresis than friable rocks, due to frictional sliding and grain contact adhesion, which causes permanent damage to pore structure. Porosity displays an inverse relation to hysteresis, as high pore density enables rock's matrix to deform and recover its shape without frictional sliding and grain contact adhesion.

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/content/papers/10.3997/2214-4609.201901435
2019-06-03
2024-04-19

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http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201901435
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Correlation Between Hysteresis, Elastic Moduli and Petrophysical Properties in Sedimentary Rocks
Conference Proceedings 2019, 1 (2019); https://doi.org/10.3997/2214-4609.201901435
/content/papers/10.3997/2214-4609.201901435
/content/papers/10.3997/2214-4609.201901435
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