Role of silicate and aluminate ions in the reaction of sodium hydroxide with reservoir minerals

Journal Article · Tue Nov 01 04:00:00 EST 1988 · SPE (Society of Petroleum Engineers) Reserv. Eng.; (United States)

DOI:https://doi.org/10.2118/16277-PA· OSTI ID:6542032

Thornton, S D ^[1]

---

1. Patrick Engineering Inc., Glenn Ellyn, IL (US)

A chemical model is presented for extrapolating laboratory data on mineral/alakli reactions to reservoir time scales. Minerals in sandstone and ions in caustic solution that control sodium hydroxide consumption during alkaline flooding were identified. This work may help operators predict when significant dissolution of the formation will occur and where precipitates will deposit. The dissolution of eight silicate minerals in caustic solution at 24 and 70C (75 and 158F) was determined. The minerals studied were quartz, two feldspars (microline and albite), two micas (muscovite and biotite), and three clays (kaolinite, montmorillonite, and chlorite). The concentrations of sodium, silicate, aluminate, and hydroxide were measured periodically during bottle tests. Balanced chemical reactions are written for quartz, kaolinite, and phillipsite, and the corresponding equilibrium quotients are defined. A kinetic model is presented that includes rate constants, solid/liquid ratios, and equilibrium quotients to account for the effect of solution composition. The model was tested for kaolinite. The equilibrium quotient for kaolinite was found to be three times higher at 70C (158F) than at 24C (75F). Dissolution-rate data were fitted successfully with the kinetic model. The reaction of Kern River reservoir sand with sodium hydroxide was studied to test the model. Consumption of sodium hydroxide occurred as predicted. However, caustic consumption was delayed in a slim tube packed with 99% quartz and 1% kaolinite, probably because of reduced nucleation of new minerals.

• OSTI ID: 6542032
• Journal Information: SPE (Society of Petroleum Engineers) Reserv. Eng.; (United States), Journal Name: SPE (Society of Petroleum Engineers) Reserv. Eng.; (United States) Vol. 3:4; ISSN SREEE
• Country of Publication: United States
• Language: English

Related Subjects

04 OIL SHALES AND TAR SANDS
040401* -- Oil Shales & Tar Sands-- In Situ Methods
True & Modified
040500 -- Oil Shales & Tar Sands-- Properties & Composition
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
ALKALI METAL COMPOUNDS
ALUMINIUM COMPOUNDS
ALUMINIUM SILICATES
ANALOG SYSTEMS
BITUMINOUS MATERIALS
CARBONACEOUS MATERIALS
CAUSTIC FLOODING
CHALCOGENIDES
CHEMICAL COMPOSITION
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
DISPLACEMENT FLUIDS
ENERGY SOURCES
FLUID INJECTION
FLUIDS
FOSSIL FUELS
FUELS
FUNCTIONAL MODELS
HYDROGEN COMPOUNDS
HYDROXIDES
KAOLINITE
KINETICS
MATERIALS
MINERALS
OIL SANDS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
QUARTZ
REACTION KINETICS
REDOX REACTIONS
SILICATE MINERALS
SILICATES
SILICON COMPOUNDS
SILICON OXIDES
SIMULATORS
SODIUM COMPOUNDS
SODIUM HYDROXIDES
WATERFLOODING