Precipitation/redissolution/reprecipitation phenomenon in sulfonate-inorganics system

Thesis/Dissertation · Fri Jan 01 04:00:00 EST 1982

OSTI ID:5589135

Celik, M S

Interaction of sulfonates with mono and multivalent ions, which are present in significant amounts in reservoir fluids, is a phenomenon of major importance in tertiary oil recovery by micellar flooding. Since these interactions can significantly influence the loss of sulfonates due to precipitation, it is important to understand the mechanisms involved and to identify conditions that would minimize the loss of surfactant from the slug. The precipitation of sodium dodecyl-benzenesulfonate and sodium dodecyl sulfonate in CaCl/sub 2/, AlCl/sub 3/ and/or NaCl solutions was investigated. While increase of sulfonate in NaCl solutions is found to cause precipitation above a certain concentration, in CaCl/sub 2/ and AlCl/sub 3/ solutions it is found to exhibit a complex and interesting behavior. A detailed investigation of precipitation/redissolution/reprecipitation phenomenon as a function of the type and chain length of sulfonate, ionic strength, and temperature showed the precipitate to be mainly calcium disulfonate under the tested conditions and the precipitate redissolution to occur in the presence of micelles. The data for the dependence of precipitation/redissolution on temperature was used to obtain various thermodynamic parameters such as heats of dissolution, micellization, solubilization and calcium adsorption on micelles. The temperature dependence predicted by this model was found to be in agreement wit the experimental results.

• Research Organization: Columbia Univ., New York (USA)
• OSTI ID: 5589135
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
ALUMINIUM CHLORIDES
ALUMINIUM COMPOUNDS
CALCIUM CHLORIDES
CALCIUM COMPOUNDS
CALCIUM HALIDES
CHLORIDES
CHLORINE COMPOUNDS
DISSOLUTION
ENHANCED RECOVERY
FLUID INJECTION
HALIDES
HALOGEN COMPOUNDS
MICROEMULSION FLOODING
MISCIBLE-PHASE DISPLACEMENT
OIL WELLS
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
PRECIPITATION
RECOVERY
SEPARATION PROCESSES
SODIUM CHLORIDES
SODIUM COMPOUNDS
SULFONATES
WELLS