Comprehensive Evaluation Of Haiyue Buried Hill Pre-paleogene Logging In The Beach Of Liaohe Depression

This project belongs to the major national science and technology project of liaohe oilfield company Study on oil and gas accumulation and oil and gas storage in the northern part of bohai bay basin Subject subordinate task 2 Geological evaluation and exploration practice in the area of increasing reservoir in liaohe depression.Based on the study of bedrock in the east of the beach of liaohe depression,this paper aims to solve the problem that the regional stratigraphic framework is not clear and the stratigraphic lithology and reservoir identification criteria in different ages are not perfect.Based on the study of this paper,the author deepens the understanding of the stratigraphic distribution law of the foreshore paleogene system,and constructs the standard comprehensive columnar section and the regional stratigraphic framework of the foreshore paleogene system in the east of the foreshore sea.In order to provide guidance and reference for the exploration and deployment of bedrock in this area and the whole liaohe depression,the identification and evaluation criteria of pre-paleogene lithology and reservoir should be improved.The study area,the author of this paper the situation of development of the former in bedrock,using integrated histogram crossplot method to statistic the various lithology logging response characteristics,combined with the microscopic identification results and logging data,established the system of lithologic identification standards,combined with 3d seismic multi-attribute inversion mathematical modeling method of support vector machine method of palaeozoic group is used to identify the more elaborate archaean group lithology.On the basis of lithology identification,the reservoir identification chart was established based on lithology by focusing on the data of oil test and production.Determines the sea moon buried hill archaean group main lithology is mixed granite,gneiss mixed,the upper Paleozoic main lithology of dolomite limestone,marl,Mesozoic mainly for breccia volcanic breccia conglomerate sandstone using clear the casting thin sections and intuitive imaging image,reservoir space types of the reservoir in the study area and its development situation has carried on the comprehensive research,according to the different configuration of hole hole seam between relation and combination mode could be divided into three types: reservoir holes type holes and cracks,and the implementation of the logging response characteristics of the various types of reservoir,the evaluation of single well for three key Wells.In fracture identification,the true and false of buried hill fracture,this paper has carried on the identification of natural and induced cracks,analyzes the characteristics of cracks in the imaging figure fracture effectiveness and the change of three porosity in the fracture zone of fracture porosity permeability modeling parameters such as open degree,research the relationship between reservoir four properties,a more detailed explanation to the reservoirthrough the above research,finally set up a relatively perfect sea moon buried hill of the former in lithologic reservoir logging evaluation system...