Application of Quantitative Fracture Prediction Based on Indicator Factor in Engineering Fracturing

Summary With the development of oil and gas exploration, fractured reservoirs are becoming more and more important. At present, the fracture prediction based on seismic is mainly qualitative, with large scale and strong multi-solution, which cannot meet the needs of well location deployment, nor can it provide a basis for later engineering fracturing. This paper fully considering fracture information characteristics of multi-scale, multi-dimensional space, first of all, according to the array logging and imaging logging, single well fracture parameters set up different seismic prediction results of fracture evaluation standard, then the different scales of fracture prediction results as evaluation factors of fracture, index weight method is used to determine the optimal factor combination and weight, kernel principal component analysis to construct fracture indicating factor, three-dimensional fracture appraisal well, guide fracturing parameters such as layer, seam long slot width and orientation of certain. This technology has achieved very good application effect in the exploration of YSW fractured buried hill in Bohai Bay Basin, guiding the deployment of multiple wells in YSW buried hill, with a success rate of more than 80%,guiding the breakthrough of AT2x1 secondary fracturing.