成都理工大学学报（自然科学版）2025，Vol.52Issue(4)：761-777,17.DOI:10.12474/cdlgzrkx.2024061201
深层油气藏差异聚集的动态盆地模拟——以塔里木塔河油田为例
Dynamic basin simulation of the differential accumulation of deep oil and gas reservoirs:A case study of the Tahe Oilfield,Tarim Basin
摘要
Abstract
To reveal the history of differential accumulation of deep and complex hydrocarbons in the Tahe oilfield,we use basin simulation technology to recover the thermal evolution history,hydrocarbon generation history,and hydrocarbon migration and accumulation history of petroleum systems in the lower Cambrian source rock.The simulations are based on drilling,well,and geophysical data.This study shows that the thermal evolution of the hydrocarbon source rocks has a clear positive correlation with the rock's fluid properties and phase,reflecting the characteristic of the source-controlled rocks.We find that a strike-slip fracture and unconformity conduction system control the process of oil and gas vertical injection and lateral adjustment.We show that the low potential area of the NNE strike-slip is favorable for the convergence of oil and gas reservoirs,which are mainly distributed as"a string of beads"while the NNW-oriented fractures mainly play the role of conduction.The difference in preservation conditions affects the scale and phase of oil and gas aggregation,where the large-scale dispersion of oil and gas occurs in the missing area of the NNW cover,which is an important reason for the formation of heavy oil.Under the multifactor coupling of"source rock-migration-accumulation-preservation"the Ordovician oil and gas in the Tahe oilfield as a whole has different accumulation characteristics,presenting as heavy in the northwest and light in the southeast,with migration in the southeast and polymerization in the northwest.The Zhutiqu shows signs of multi-source convergence,inherited enrichment,paleo-uplift controlling enrichment,while the Aidingqu and Yuqixi have a history of early destruction,and in situ migration and accumulation.The Tuoputai and Yuqi have the characteristics of lateral adjustment,late reservoir formation,and fault-controlling enrichment.The dynamic evolution data of the oil-and gas-bearing system reveal that the residual volume and fugitive volume in the deep layer have been in dynamic equilibrium.The statistical results of the residual volume show that the Yijianfang Formation and the Yingshan Formation still have good exploration and development potential,while the Xiaoerbulake Formation and the Xiaqiulitage Formation have certain resource prospects,as they contain potential layers for the exploration of light oil condensates.Near the Ordovician unconformity in Toputai and Yuqi and along the strike-slip fracture cracks and holes,it may be easy to capture late light oil,which is worthy of further in-depth evaluation.This study also provides a new research tool for the quantitative study of deep reservoir dynamics.关键词
塔河油田/多相态油气藏/盆地模拟/主控因素/成藏模式Key words
Tahe oilfield/multiphase oil and gas reservoirs/basin simulation/main controlling factors/accumulation model分类
天文与地球科学引用本文复制引用
ZHONG Li,LI Bin,ZHENG Binsong,CHEN Zexi,LÜ Haitao,YANG Suju,XU Qinqi..深层油气藏差异聚集的动态盆地模拟——以塔里木塔河油田为例[J].成都理工大学学报（自然科学版）,2025,52(4):761-777,17.基金项目
福建省自然科学基金项目(2017J01467). （2017J01467）
