城市地质2024，Vol.19Issue(4)：500-507,8.DOI:10.3969/j.issn.2097-3764.2024.04.010
梨树断陷七棵树地区油田水水化学特征及成因分析
Characterization and genesis of oilfield water hydrochemistry in the Qikeshu,Lishu Fault
摘要
Abstract
In order to identify the chemical characteristics and ion sources of oilfield water in the Qikeshu area,10 sets of oilfield water samples were collected in the study area,and comprehensive analyses were carried out through descriptive statistics method,Piper three-line diagram method,Gibbs plot method,D-function analysis and so on.The research results indicate that the main types of oilfield water chemistry in the Qikeshu area are mainly Cl-Na·K water with low SO4 2-and low HCO3-and HCO3-Na·K water with low SO4 2-and low Cl-.The hydrochemical characteristics of oilfield water are mainly affected by evaporation and crystallization,and the water body is mainly recharged by atmospheric precipitation during the evolution process,and the reservoir storage environment is poorly closed.The results of ionic correlation analysis show that TDS has a strong positive correlation with both Na++K+and Cl-(R=1,P<0.01),which verifies that Na++K+and Cl-are the main variables determining the salinization of oilfield water.The D-function law indicates that the formation of oilfield water in the Qikeshu area is due to cation differentiation,which is consistent with the characteristics of cationic oilfield water.And the differentiation phenomenon is mainly related to the evaporation and crystallization effect and cation exchange effect of oilfield water formation.关键词
七棵树地区/油田水/水化学特征/D函数Key words
Qikeshu area/oilfield water/water chemical characteristics/D function引用本文复制引用
王聪毅..梨树断陷七棵树地区油田水水化学特征及成因分析[J].城市地质,2024,19(4):500-507,8.基金项目
国家自然科学基金项目(41272170)资助 （41272170）
