Ion Filtration and Stable Oxygen Isotopic Fractionation Resulting From the Passage of Sodium-Calcium-Chloride Brine Through Compacted Smectite Layers at Elevated Temperatures and Pressures

A solution 5.00 molal in NaCl and 0.45 molal in CaCl(,2) was forced through 1.5 cm-thick clay plugs made of sedimented, randomly-oriented one-half to two micron diameter montmorillonite flakes. Two sets of experiments were carried out. In one set the confining pressure on the clay was 5000 pounds per square inch (psi) and the mean brine pressure was 2325 psi; in the other set the values were 10,000 and 4650 psi, respectively. In all experiments the differential pressure across the clay plugs was 2000 psi. Experiments were carried out at 20(DEGREES), 95(DEGREES), 140(DEGREES) and 180(DEGREES)C for the 5000 psi-compaction-pressure experiments and at 140(DEGREES)C for the 10,000 psi-compact-pressure experiment. Effluent concentrations reached constant values in one to three months.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Geology

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2014

Author dc:creator

• Haydon, Paul Richard

• Geology

Identifier

(UMI)AAI8309953

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/71125