Reservoir And Fracture Prediction Technology And Its Application In Liaohe Oilfield

Liaohe depression belongs to in Bohai Bay basin,which is,in the Cenozoic continental fault basin and the geologic bodies are diverse,complex,and broken.Liaoe oilfield developed in the 1960 s,has experienced more than 40 years of exploration and development course and the main oilfield development blocks have been entered into the phase of rapid decline.According to current situation of oilfield,this study give a prediction technique of reservoir and fracture which integrated application of hydrocarbon accumulation,the sequence stratigraphy,quantitative earthquake,sedimentary micro-facies,reservoir configuration,petrology and structural dynamics theories.Based on the single sand body segment compared with fine reservoir formation,establish single sand body of high resolution sequence stratigraphic framework.In phase analysis and coring well logging on the basis of micro-facies model,carried out a detailed study on sedimentary micro-facies in the single sand body.With the method of Well seismic combination,the single sand body features were characterized and then to carry out the single sand body small interlayer,single sand body internal structure,oil and water distribution and control for anatomy,reconstruction of main oil and gas reservoir sedimentary model of single sand body,reservoir structure model,the remaining oil distribution model for the block of single reservoir connecting relation,injection-production relation,law of water,water oil displacement effect,extension,expansion layer,keep the stable oil field production to lay a solid geological foundation.Based on the perspective of the core fracture observation,the geological analysis,indoor physical mechanics experiment and core description,the geological genesis method is adopted to analysis the fracture reservoir in buried hill.According to the concrete conditions of the work area,this method used simple curvature,the growth of crack density which is control by simple curvature,and control the development direction of cracks with the trend and tendency of buried hill top boundary,at the same time,the formation thickness,the minimum distance between cracks are considered,to predict parameters such as the length of the cracks,given the number of random simulation prediction in seed point and each time simulation crack growth length,through the crack information compared with the actual test,from the statistical results,predicted basic reasonable fracture propagation direction.Single sand body and fracture characterization techniques are used in the efficient development of lithology reservoir,the thin layer of horizontal deployment,and efficient development buried hill reservoir,such as the development of Tie17 blocks which is a banded low-rising edge water reservoir,Ray 11 pieces,1 block and Jin 99 block,the Hai1 block of horizontal deployment are under the technical instruction of single sand body depict and very good effect is got,and buried hill reservoir of buried hill also characteristics of lithology and fracture description and prediction technology to achieve the efficient development.