Modelling Methods Of Fracture And Vug Carbonates

The objective of this thesis is to model a 3D geological fracture and vug model of a carbonate reservoir,and also analyzing the model and discussing the effects of the fracture and vug systems on the production of oil from the reservoir.The significance of this objective is the fact that,because of various scales,poor continuity,strong heterogeneity,accumulation in vugs and fractures,and complex flow behaviors,the efficient development of fractured carbonate reservoirs is quite challenging.The thesis deals with in chapter 1 mainly the introduction aspect.That is,classification of different geological models,the geological background of our study area,fracture and cave connectivity and its modeling process.Chapter 2 talks a bit about production dynamics and the capacity of the reservoir in oil production,further discussion of water cut mode was introduced.A detailed account of the geomorphology and reservoir characteristics was also provided in this chapter.Oil and water distribution relationship in the fracture and cave system was later discussed and to end the chapter effects of water injection on the reservoir was discussed.The last chapter presented a case study on geological modeling of fractured-vuggy carbonate reservoir.It discussed basic data preparation and the idea of geological modeling,the chapter viewed the aspect of history matchin and result analysis.In conclusion of the thesis,at present,the study of complex connectivity of cave network needs to be further studied.The cave network structure,which is characterized by geology and geophysical data,cannot meet the needs.It is necessary to describe oil-water distribution structure of the complex caves in combination with production performance,and then provide a predictable high-precision model for the reservoir adjustment...