中国地质调查2025，Vol.12Issue(2)：30-40,11.DOI:10.19388/j.zgdzdc.2025.109
巨厚碳酸盐岩储集体特征及主控因素——以扎格罗斯盆地山前褶皱带T油田为例
Characteristics and controls of super-thick carbonate reservoirs:A case study of piedmont fold zone in T oilfield of Zagros Basin
摘要
Abstract
The Cretaceous carbonate reservoirs with the thickness of more than 800 m were developed in piedmont fold zone in T oilfield of Zagros Basin.Due to a variety of controlling factors,these reservoirs show strong hetero-geneities,which seriously restricts fine characterization of reservoirs and the development plan.The mainly devel-oped froctured reservoirs in Shiranish and Kometan Formation were clarified on the basis of seismic attributes,core,well logging,well testing,fracture modeling and other data.The dolostones in Qamqucha Formation have intercrystalline dissolved pores,vugs and fractures,which are the most developed reservoir units in this area.As a whole,the three formations show obvious characteristics of strata-controlled,fault-controlled and structural position control.The main causes of reservoir development in this oilfield were proposed.① The intercrystalline dissolution pores(vugs)of dolostones were closely related to penecontemporaneous dolomitization,karstification,shoal facies and hydrothermal alteration.② The folding and faulting were the fundamental causes of fracture de-velopment in this area,and the degree of fracture development was mainly affected by lithology,shale content and structural position.③The degree of fracture development superimposed matrix pores and the difference of vertical and plane connectivity were the key factors of strong heterogeneity in this oilfield.These understandings could pro-vide the basis for well placement and development formulation.关键词
巨厚碳酸盐岩/储集体/发育特征/控制因素/T油田/扎格罗斯盆地Key words
super-thick carbonate/reservoir/development characteristic/control factor/T oilfield/Zagros Ba-sin分类
地质学引用本文复制引用
张涛..巨厚碳酸盐岩储集体特征及主控因素——以扎格罗斯盆地山前褶皱带T油田为例[J].中国地质调查,2025,12(2):30-40,11.基金项目
中国科学院A类战略性先导科技专项"深层油气勘探目标评价与优选(编号:XDA14010406)"资助. （编号:XDA14010406）
