Geochemical Characteristics and Origin of Formation Water in Western Depression,Liaohe Basin
Zhu Fangbing
Zhou Hong
Liu Rui
Abstract：The characteristics of formation water are important factors to study the basin evolution and heavy oil distribution. Geochemical studies can facilitate the exploration of heavy oil which dominates the oil reserves in Liaohe basin.Based on the test of formation water and isotope analyses of western depression,the geochemistry and origin of formation water are dis-cussed in this paper.The total dissolved solid (TDS)and chemical compositions are controlled by the buried depth.The forma-tions water shows vertical flow.The differences of chemical compositions of formation water and characters are related to inten-sity of surface water injection in different areas and local formation water flowing characters which are main reasons of crude oil bio-degradation.The isotope analyses also show that surface water injection is much stronger in Jinzhou,Huanxiling and Lenji areas.The different cycle characters of formation water lead to chemical conditions and crude oil bio-degradation.Surface water leaching is the necessary condition of degradation heavy oil development.
Keywords：Liaohe basinformation waterheavy oilisotopehydrological geology
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 1870-1875 )