APPLICATION OF NATURAL ZEOLITE IN OIL-WELL CEMENT COMPOSITION Application of natural zeolite in oil-well cement composition

Published in Technique and technology of silicates · Pages 84–87 · Rubric: MAIN RUBRIC
Received: 21.09.2018 Accepted: 23.09.2018 Published: 25.09.2018 Language of publication: RUS
The results of testing cement-zeolitic oil-well solutions obtained on the basis of zeolite-bearing rocks of the Aydagh deposit on the basis of clinoptilolite are presented. It is shown that the main advantage of the introduction of clinoptilolite-containing zeolite in the grouting mortar, in comparison with other pozzolans, is not their ability to rapidly setting lime, but to create an increased diffusion activity of the reaction components. It was found that after two years of hardening at a temperature of 750 ° C, the modified cement-zeolite oil-well solution had a strength approximately 2 times greater than the cement-clay composition of the same specific gravity (1.5 g / cm3). Acceleration of the hydrate formation process by the use of zeolite and the improvement of its phase composition make it possible to justify the use of production columns for grouting at temperatures of 20 to 1000оС instead of cement-sandy mixes, relatively heavy and slowly hardening.
oil-well cement, mineral additives, zeolite, clinoptilolite, cement stone, strength, slurry