| 锂元素及其同位素对南翼山油田卤水形成演化的指示意义 |
| |
| 引用本文： | 许建新,秦成功,韩积斌,高雪峰,郭斌,赵为永,雷涛,韩光.锂元素及其同位素对南翼山油田卤水形成演化的指示意义[J].盐湖研究,2023,31(1):11-24. |
| |
| 作者姓名： | 许建新 秦成功 韩积斌 高雪峰 郭斌 赵为永 雷涛 韩光 |
| |
| 作者单位： | 中国科学院青海盐湖研究所,中国科学院青海盐湖研究所,中国科学院青海盐湖研究所,中国石油青海油田分公司勘探事业部,中国石油青海油田分公司勘探事业部,中国石油青海油田分公司勘探开发研究院,中国石油青海油田分公司勘探开发研究院,青海省柴达木综合地质矿产勘查院 |
| |
| 基金项目： | “柴达木盆地南翼山油气田构造中油田水的形成演化及锂钾铀的富集机理”(2019-ZJ-7028)；“青藏高原盐湖资源变化调查与远景评价”(2019QZKK0805) |
| |
| 摘 要： | 南翼山油田卤水以高钙富锂等元素为特征，是柴达木盆地研究程度较高的油田卤水之一。本文根据南翼山构造区及其周边地区油田卤水、盐湖卤水、河水和潜水等不同水体的水化学及岩层的地球化学和矿物特征，研究了湖水的蒸发浓缩对Li+的富集作用，探讨了水岩反应对油田卤水Li+含量和δ7Li的影响。结果表明，埋藏之前的蒸发浓缩是Li+含量和总固溶物增大的主要原因；水岩反应对Li+含量和δ7Li有影响，但不会引起明显变化。南翼山油田卤水主要来源于古盐湖卤水，演化过程中曾受到水岩反应的影响。
|
| 关 键 词： | 油田卤水，锂同位素，水岩反应，地球化学，南翼山构造区 |
| 收稿时间： | 2021/12/16 0:00:00 |
| 修稿时间： | 2022/1/15 0:00:00 |
Geochemistry of Li and Its Isotope:Implications for Origin and Evolution of Oilfield Water in Nanyishan Tectonic Area,Qaidam Basin,Northwest China |
| |
| XU Jian-xin,QIN Cheng-gong,HAN Ji-bin,GAO Xue-feng,GUO Bin,ZHAO Wei-yong,LEI Tao,HAN Guang.Geochemistry of Li and Its Isotope:Implications for Origin and Evolution of Oilfield Water in Nanyishan Tectonic Area,Qaidam Basin,Northwest China[J].Journal of Salt Lake Research,2023,31(1):11-24. |
| |
| Authors: | XU Jian-xin QIN Cheng-gong HAN Ji-bin GAO Xue-feng GUO Bin ZHAO Wei-yong LEI Tao HAN Guang |
| |
| Institution: | Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resouces,Qinghai Institute of Salt Lakes,Chinese Academy of Sciences,Xining,Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resouces,Qinghai Institute of Salt Lakes,Chinese Academy of Sciences,Xining,Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resouces,Qinghai Institute of Salt Lakes,Chinese Academy of Sciences,Xining,Exploration Enterprise Department of Qinghai Oilfield Company,PetroChina,Dunhuang,Exploration Enterprise Department of Qinghai Oilfield Company,PetroChina,Dunhuang,Research Institute of Exploration and Development,Qinghai Oilfield Company,PetroChina,Dunhuang,Research Institute of Exploration and Development,Qinghai Oilfield Company,PetroChina,Dunhuang,Qinghai Tsaidam Survey Institute of Comprehensive Geology and Mineral,Gelmud |
| |
| Abstract: | The oilfield water, in Nanyishan tectonic area, contains high level of lithium and calcium. It is one of the oilfield waters, in Tsaidam basin, which has been studied most in recent years. According to the water chemical compositions and the Li isotope compositions of the oilfield water in Nanyishan tectonic area and other waters (the brine in Gas Hure salt lake, the intercrystal brine in Dalangtan playa, the river water in Aral and the well water in Mangya), and the geochemistry and minerals of different rocks, this paper studied the enrichment of Li+ in the brine during evaporation, and discussed the changes of Li+ content and Li isotope composition in the oilfield water during postdepositional water rock reactions. The results show that the evaporation of the brine in ancient salt lake led primarily to the increase of Li+ content and TDS, and that postdeositional water rock reactions resulted indistinctively in changes of Li+ content and Li isotope composition. The residual brine in ancient salt lake was the primary source of the oilfield water in Nanyishan tectonic area. During its postdepositional evolution, the oilfield water had been changed little by water rock reactions. |
| |
| Keywords: | Oilfield water Lithium isotope Water rock reaction Geochemistry Nanyisahn tectonic area |
|
| 点击此处可从《盐湖研究》浏览原始摘要信息 |
| 点击此处可从《盐湖研究》下载免费的PDF全文 |
|
