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热德拜油田是中国石油在哈萨克斯坦收购的MMG公司的两个主力油田之一,已经投入开发40多年。前人认为热德拜油田侏罗系储集层为浅海相或滨海相沉积,这与目前油藏开发过程中出现储集层非均质性强的现象相矛盾。利用构造、岩性、测井等资料建立了沉积相模式,分析认为,侏罗系储集层为浅水辫状河三角洲沉积,并识别出了沼泽、河道间、心滩和分流河道等微相,其中分流河道微相发育了主要的储集体。研究认为沉积微相对开发效果有明显的影响。
Jebdeni Oilfield is one of the two major oilfields of MMG acquired by PetroChina in Kazakhstan and has been in development for more than 40 years. The predecessors thought that Jurassic reservoirs in the Jiedupe Oilfield are of shallow marine or sedimentary facies, which contradicts the phenomenon of strong reservoir heterogeneity during the current reservoir development. The sedimentary facies model was established by using the data of structure, lithology and logging. The analysis shows that the Jurassic reservoir was deposited as a shallow braided river delta, and the microfacies of marsh, inter-river channel, heart beach and distributary channel were identified Among them, distributary channel microfacies developed major reservoirs. The study suggests that sedimentary microfacies have a significant impact on development effectiveness.