Reservoir Description Of Xishanyao Reservoir Of Qiuling Oil Field

By using the lately data of tricone seisms ,well logging , drig .testing ,and core analyze , integrate with the characterization of study area ,such as complex structure , excessive faults, instability distributing of sandstone ,etc.this article discussed the reservoir characterization of Xishanyao formation of Qiuling oil field ,based on the theoretics of petroleum geology ,sedimentology, tectonics ,reservoir geology ,etc . By using the lately methods of reservoir description ,such as higt-resolution sequence stratigraphy, reservoir geology ,flow unit ,the author band together the reservoir static state with production performance , established the refined reservoir geological model of Xishanyao reservoir of Qiuling oil field in this study.The author valued and forecasted the advantaged area of study region .There are many important value both theoretics and practical application in this study.1 .By using the higt -resolution sequence stratigraphy theory for the first time to correlated and divisioned reservoir of Xishanyao formation in study region , the default of the method which be used in formerly had been overcomed . An accuracy stratum model of study region have been established through the new method using.2. Renewedly convinced and ensured the characters of structure and faults of study region . Analysised the influence of the distribute of oil and water in condition that the structure and fault be existence. Been verified with production performance ,the author newly identified well 306 fault and well 613 fault.3.Studied the characters of the sedimentary microfacise in Xishanyao reservoir, there are 5 sedimentary microfacies be recognized ,include underwater distributive river curse of fan delta front, submerged natural levee, sand sheet of fan delta front,etc. Analysised the characters of different geneses type and rock association of each sandstone .4.Studied the characters of reservoir geology,include the character of lithology, deagenesis.Analysised the character of the distributing of sandstone, physical properties and oil saturation.Analysised the character of inner-heterogeneity and inter- heterogeneity of the reservoir in study area.5.By using the cluster analysis mathematical method , the reservoirs of Xishanyao formation can be classified three diffirent types .6. For the first time,this article investigation the character of flow units of study region by cluster analysis and discriminant analysis mathematical methods . The reservoir of Xishanyao formation can be classified to three diffirent flow units as A,B and C type ,and analysised the distributing and permeability character of different type in lengthways and horizontal.7. Valued and forecasted the advantaged area of study region in this article.Liang Xiao Wei (lithology.mineralogy and gitology) Directed by Sun Wei (professor).