Vapor phase reactions of organoaminosilanes with quartz

Journal Article · Tue Feb 01 00:00:00 EST 1994 · Journal of Colloid and Interface Science; (United States)

DOI:https://doi.org/10.1006/jcis.1994.1065· OSTI ID:7206451

Takach, N E ^[1]

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1. Univ. of Tulsa, OK (United States). Chemistry Dept.

Changes in wettability affect capillary pressure, relative permeability, waterflood behavior, and several other properties important to the success of conventional and enhanced oil recovery methods. A technique for modifying the natural water-wetting behavior of polished quartz plates is discussed. The method involves chemical bonding of an organoaminosilane in the vapor phase to hydroxyl groups at the quartz surface. The dynamic Wilhelmy plate apparatus provided rapid and convenient evaluation of the silylation reactions. Three different silylation temperatures were investigated for both monofunctional hexamethyldisilazane (HMDS) and bifunctional bis(dimethylamino)dimethylsilane (BDMADMS). With both types of silane, only experiments at the highest temperature, 275 C, resulted in new siloxane bonds at the surface and, hence, strongly oil-wetting behavior. The persistence of the modified surfaces upon immersion of the plates in water varied considerably with the type of silane used. The surface of the HMDS-treated plates started to degrade within 24 h after soaking the plates in water. Plates treated with BDMADMS remained oil wetting in both directions of the wetting cycle for up to 13 weeks of soaking in water and at least 9 additional weeks when soaked in other liquids.

• OSTI ID: 7206451
• Journal Information: Journal of Colloid and Interface Science; (United States), Vol. 162:2; ISSN 0021-9797
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
QUARTZ
CHEMICAL REACTIONS
WETTABILITY
SILANES
ENHANCED RECOVERY
OIL WELLS
PETROLEUM
WATERFLOODING
ENERGY SOURCES
FLUID INJECTION
FOSSIL FUELS
FUELS
HYDRIDES
HYDROGEN COMPOUNDS
MINERALS
ORGANIC COMPOUNDS
ORGANIC SILICON COMPOUNDS
OXIDE MINERALS
SILICON COMPOUNDS
WELLS
020300* - Petroleum- Drilling & Production