Main controlling factors and accumulation model of conventional-tight oil reservoirs in the Upper Uerhe Formation of the eastern slope of Zhongguai Uplift,Junggar Basin
Main controlling factors and accumulation model of conventional-tight oil reservoirs in the Upper Uerhe Formation of the eastern slope of Zhongguai Uplift,Junggar Basin
The Upper Uerhe Formation of the eastern slope of Zhongguai Uplift in Junggar Basin is rich in oil and gas resources,which is an important field for efficient exploration and production.By using well logging,production data and core analysis data,we studied the reservoir characteristics of the Up-per Uerhe Formation in different structural locations on the eastern slope of Zhongguai Uplift,the main controlling factors causing the reservoir differences were identified,and the sequential distribution of conventional and tight reservoirs on the eastern slope of Zhongguai Uplift was established.The results show that the reservoir gradually transforms from conventional to tight,from the north to the south,the sedimentation is the material basis causing the reservoir differences,controlling the reservoir litholo-gy and original physical properties,the compaction and turbidite cementation aggravate the evolution of the conventional-tight reservoir differences;the diagenetic facies zone in the study area can be divided in-to four types:muddy filling zone,poor mud-weak cementation zone,turbidite cementation zone and strong compaction-weak dissolution zone,among which the poor mud-weak cementation zone is the fa-vorable reservoir development zone in the study area.The results have guiding significance for tight oil reservoir exploration.
关键词
准噶尔盆地/中拐凸起东斜坡/上乌尔禾组/常规储层/致密储层/储层特征/主控因素/成藏模式
Key words
Junggar Basin/eastern slope of Zhongguai Uplift/Upper Uerhe Formation/conventional reservoir/tight reservoir/reservoir characteristics/main controlling factors/hydrocarbon accumulation model
维普
万方数据