西南石油大学学报（自然科学版）2016，Vol.38Issue(4)：63-70,8.DOI:10.11885/j.issn.1674-5086.2014.10.22.02
同沉积期钙富集过程解析与形成机制研究
Mechanism and Process Analysis of Calcareous Precipitation in the Syndepositional Stage
摘要
Abstract
The caliche in the superficial arcose in paleodepositional environments is one of the important factors affecting reservoir physical property. In paleodepositional surface environments,the concentration of calcium is generally in the form of plates and flakes. The paper points out the origin of the Ca2+,the conditions of the concentration of the Ca2+ and the mechanism and dominant factors of the caliche formation through physical-chemical study. The results show that the Ca2+is dissociated from silicon aluminate particles,which is closely connected with the existence of the atmospheric acidic water. When the climate is dry,with the evaporation larger than precipitation,the lake surface keeps decreasing,the river diverts or the transition flow blocked,etc.,which are all beneficial for the decomposition of the heavy calcium carbonate,thus making the plate-like and flaky caliches widely scattered. Therefore,we hold that a clear understanding of the mechanism and dominant factors of calcium concentration is of significance in the efficient exploitation in the late period of production.关键词
钙积层/地下水/大气酸性水/古沉积环境/成因Key words
caliches/groundwater/atmospheric acidic water/paleodepositional environments/cause分类
能源科技引用本文复制引用
单敬福,张倩,彭妙,郭兵,高怀玺..同沉积期钙富集过程解析与形成机制研究[J].西南石油大学学报（自然科学版）,2016,38(4):63-70,8.基金项目
国家自然科学基金（41372125）；湖北省教育厅基金（Q20121210）；中国地质大学（武汉）“构造与油气资源”教育部重点实验室开放基金（TPR 201223）。 （）
