DISSOLUTION AND CONDENSATION KINETICS OF SILICA IN ALKALINE SOLUTION.

被引：1

作者：

Thornton, S.D. ^{[1
]}

Radke, C.J. ^{[1
]}

机构：

[1] Univ of California, CA, USA, Univ of California, CA, USA

来源：

SPE Reservoir Engineering (Society of Petroleum Engineers) | 1988年 / 3卷 / 02期

关键词：

OIL WELL PRODUCTION - Flooding - PETROLEUM RESERVOIR ENGINEERING;

D O I：

10.2118/13601-PA

中图分类号：

学科分类号：

摘要：

Chemical loss through long-term rock reactions is a major impediment for practical application of alkaline waterflooding. This paper addresses the viability of soluble silicates reducing hydroxide consumption by siliceous rock reactions. A convenient differential rate method is used to obtain new experimental kinetic data for the dissolution/condensation rates of quartz at 23 and 70 degree C left bracket 73 and 158 degree F right bracket and amorphous silica at 23 degree C left bracket 73 degree F right bracket over the pH range from 11 to 12 and in 1 M NaCl. The role of added silicates is studied from zero solution concentration to considerably above the solubility limit. Silica dissolution rates are observed to slow as the solubility limit is reached and become negative (i. e. , net precipitation occurs) above the solubility limit. The kinetic rates decrease with increasing solution silicate in a parabolic fashion.

引用

页码：743 / 752