The Geological Modeling And Numerical Simulation Of The Xingan Ridge In The Bei 14 Block

Hailar basin is located in the Hulun Buir the Inner Mongolia Autonomous Region League, which is the largest oil and gas bearing basin in the Songliao basin. The Bei 14 block is located in the Hailar Basin, Beier depression of Sudeerte structural belt in the Midwest, the purpose layer of the study area is Xinganling layer of Nantun group a 1 groups of oil and oil group II. Due to the complex reservoir geological features in this area, it is very difficult to accurately predict the oil and gas reserves and to make the development plan. So it is very important to establish the three-dimensional geological model of reservoir, to show the underground structure and reservoir characteristics, and to simulate the numerical simulation. It is significant for the optimization design of the development plan of Hailar oil field 14 block.The study is based on the theoretical knowledge of sedimentology and petroleum geology and other disciplines as the guide, through the analysis of core and logging data, determine the sedimentary environment of fan delta facies, types of fan delta front, mainly developed underwater distributary channel microfacies, estuary sand dam microfacies, sheet sand microfacies and underwater distributary channel between the sedimentary microfacies types; the lithologic and electric relationship microfacies logging facies model; sedimentary microfacies plane prediction using microfacies combination and single sand body plane of key unit layer microfacies is finely described, that in the study area the development of large and medium-sized underwater distributary channel and a north south direction; Sudheer oilfield structure fluctuation and development of "X", "Y" type fault type fault, fault type "a" with a plurality of small faults to Study on geological modeling has brought great difficulty in understanding, based on the comprehensive geological, combined with previous research results and experiences, using the PETREL software to simulate the processing of all faults, to accord with the actual occurrence and development model of generation is reasonable; according to the research results of sedimentary microfacies the deterministic modeling method to establish sedimentary microfacies model, establish porosity model, permeability model and saturation model, effective thickness model and the model of net to gross 5 kinds of attribute model and phase control through analysis of the variogram function under the constraint; fine geological model will be established for the coarse grid and calculated by CMG software put forward a variety of development on the basis of prediction scheme of production data and history matching for the oilfield development program deployment and adjustment. High recovery rate laid the foundation.