摘要
八道湾组是准噶尔盆地夏9井区重要的上返接替层系.以岩心、测井、扫描电镜、X衍射等多种资料为基础,综合研究表明:八道湾组储层主要处于中成岩阶段A期,成岩作用类型包括压实、溶解和胶结作用等.其中,胶结作用和溶解作用分别为影响储层物性的主要破坏性和建设性成岩作用.成岩相类型包括压实成岩相、铝硅酸盐及碳酸盐溶解成岩相、碳酸盐及自生粘土胶结成岩相.成岩相分布不仅控制含油气区带,且是造成研究区南西段构造低部位含油,北东段高部位含水或为干层的主导因素.夏9井区中部偏南西部位背斜脊部附近铝硅酸岩及碳酸盐溶解成岩相发育区是制定八道湾组上返补孔和补钻新井等开发决策的首选目标.
Badaowan formation is an important target for upward development of Xiazijie Oilfield in Junggar Basin. Based on the data of core analysis,well logging,SEM and X diffraction of clay minerals etc., this paper analyzed the diagenetic characteristics of Badaowan formation in Xia9 well district. It was shown that the diagenesis of reservoir rock is in the middle diagenetic A stage. The diagenetic types include compaction, cementation and dissolution. Three diagenetic facies were identified, which included compaction diagenetic facies, aluminosilicate and carbonate dissolution diagenetic facies, carbonate and authgentic clay mineral cement diagenetic facies. In essential, the distribution of diagenetic facies not only controls the oil beating zones, but also is the dominant factor which causes oil only being contained in the lower position of the southwest anticline section, while the higher position of the northeast anticline section contains only water or dry layer. The preferred zone for perforations adding and drilhng new well for upward developing will be located in the southwest section where belongs to the aluminosilicate and carbonate dissolution diagenetic facies.
出处
《新疆地质》
CAS
CSCD
2008年第4期363-368,共6页
Xinjiang Geology
基金
国家自然基金项目(40602013)资助
关键词
准噶尔盆地
八道湾组
成岩特征
成岩相
含油不均一
Junggar basin
Badaowan formation
Diagenetic characteristics
Diagenetic facies
Heterogeneity of oil distribution
