河南理工大学学报（自然科学版）2024，Vol.43Issue(6)：69-81,13.DOI:10.16186/j.cnki.1673-9787.2023100059
基于岩心和电成像测井的遗迹组构识别及其地质意义
Identification of ichnofabrics and their geological significance based on core and electrical imaging logging
摘要
Abstract
Objectives In order to ascertain the development characteristics of ichnofabric of Sanya Forma-tion in Songtao Uplift in Qiongdongnan Basin,and to explore the hydrocarbon geological significance of these ichnofabrics,Methods on the basis of detailed observation and description of the development charac-teristics of trace fossils and host sediments on the core of representative coring wells,ichnofabrics were iden-tified.By calibrating the depth of the core and electrical imaging logging,the calibration of electrical imag-ing log images with core was achieved.Then,the response characteristics of ichonfabrics to electrical imag-ing logging were carefully analyzed,and reference image templates for the identification of ichnofabrics us-ing electrical imaging log were established.Results(1)Five kinds of ichnofabrics were identified on the core and electrical imaging log images of the study area:Phycosiphon-Chondrites ichnofabric,Phycosiphon-Planolites ichnofabric,Planolites-Thalassionides ichnofabric,Palaeophycus ichnofabric and Ophiomorpha-Thalassionides ichnofabric.By synthesizing the sedimentological and ichnological properties of 5 types of ich-nofabrics,their sedimentary environment formed was interpreted.(2)According to the comparison between the ichnofabrics identified from the cores and the electrical imaging images of 112 horizons in 9 wells in Qiongdongnan Basin,104 horizons were completely consistent,and the identification accuracy could reach 92.9%,while 8 horizons were inconsistent due to poor electrical imaging quality.It was reliable and effective to identify ichnofabrics of Sanya Formation in Songtao Uplift of Qiongdongnan Basin based on core and elec-trical imaging logging images.Conclusions This study was of great significance for analyzing the deposi-tional environment and predicting the distribution pattern of reservoirs in the study area,revealing the modi-fying effect of ichnofabric on hydrocarbon reservoirs,and promoting increased hydrocarbon storage and pro-duction,as well as enhancing recovery in the study area.关键词
岩心/电成像测井/遗迹组构/三亚组/琼东南盆地Key words
core/electrical imaging log/ichnofabric/Sanya Formation/Qiongdongnan Basin分类
天文与地球科学引用本文复制引用
向威,王晓飞,崔维平,牛永斌,王世越,汤翟,李平久,程怡高,邵威猛..基于岩心和电成像测井的遗迹组构识别及其地质意义[J].河南理工大学学报（自然科学版）,2024,43(6):69-81,13.基金项目
国家自然科学基金资助项目(42272178) （42272178）
河南省自然科学基金资助项目(202300410185) （202300410185）
中海油田服务股份有限公司重点科技项目(G2217C-0414T285) （G2217C-0414T285）
