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Adjusting Formation Permeability for Water Production Minimization

IP.com Disclosure Number: IPCOM000237682D
Publication Date: 2014-Jul-02
Document File: 1 page(s) / 48K

Publishing Venue

The IP.com Prior Art Database

Abstract

Permeability of silicon oxide-containing formation adjacent to borehole can be cyclically reduced if water is produced and restored during the production of oil to minimize the production of water. The same chemistry can be applied to produce sand-based proppant which swells in water and restores its diameter in oil

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Adjusting Formation Permeability for Water Production Minimization

Permeability of silicon oxide-containing formation adjacent to borehole can be cyclically reduced if water is produced and restored during the production of oil to minimize the production of water. The same chemistry can be applied to produce sand-based proppant which swells in water and restores its diameter in oil

 

   

Hydrophilic Cloisite-30B functionalized clay can be covalently attached to the surfaces of the porous silicon oxide-containing formation (i.e. sandstone) using (RO)3-Si-R-Si-(OR)3 bi-linker. In the presence of water, this clay exfoliates, thereby closing the pore throats and, thus, reducing the permeability of formation. When pores are saturated with oil, exfoliated clay gradually dehydrates and reduces its volume, thereby restoring the permeability of oil-saturated formation. Alternatively, the same chemistry can be applied to produce sand-based proppant which swells in water and restores its diameter in oil. Thus, permeability of formation can be cyclically reduced when water is produced and restored during the production of oil.