Three Dimensional Geological Modeling Of Js Oilfield In Sudan Block 6

JS oilfield was officially put into operation in August 2010,has experienced with natural gas injection and water injection development for 5 years.Now the major problem is that do not have a clear understanding of the reservoir geological structure and the distribution of oil and water is very complex.3D seismic data is poor,so the explanation on the basis of the structure and formationis insufficient.Need to carry out fine reservoir geology research,adjust the development plan,improve the development effect.Reservoir 3D geological modeling is the basis and important part of fine reservoir geology research.Byreservoir 3D geological modeling reservoir is simulated quantitatively,intuitive and accurate reaction storage layer geological formation,sedimentary facies characteristics and spatial distribution of to infer and predict the storage layer attribute parameters,the rule of oil-water movement for fine reservoir geological studies provide the basis and guarantee.First of all,in order to match the needs of fine stratigraphic correlation,the high resolution sequence stratigraphy "facies controlled cycle" theory into the high precision and other time genetic stratigraphic framework concept,combined with traditional ideas and in accordance with the fine stratigraphic correlation and facies controlled cycle distribution principle is to establish high resolution genetic stratigraphic framework;then,by collecting relevant data JS the B layer of the oil drilling well logging,paleontology features,the stratigraphic sequence,sedimentary structure,sand body structure and distribution characteristics were analyzed,combined with the geological background of JS oil field,the three layer is the deposition of Braided River Delta;based on seismic interpretation results,calculate the initial fault model,combined with the well on the breakpoint data and seismic interpretation of fault fracture configuration is modified on the basis of single well geological stratification data as hard data,the seismic interpretation structure constrained surface In interpolation method generating computational model level,so as to establish the structural model,structure model based on mesh,the lithologic data are calculated by the function method,after filling to obtain work area facies model.Finally,according to the actual geological conditions in the survey area,select based on Kriging phase control conditions of the sequential Gaussian simulation method to create a reservoir porosity and permeability models.The simulation results are faithful to the well point data.Reservoir lithology,sedimentary facies space distribution law and thickness change trend are consistent with the present geological understanding.By sequential Gaussian simulation method to get the model will assign to the data to the virtual wells.With the help of software normal interval distribution,were compared with actual well data of normal distribution,simulation results and well data with the same normal distribution,and the well sites with the same number of value.The simulation result is accurate,the geological model in accordance with the law.