The Fracture Detection Methods Based On 3d Seismic Data Research And Application

Since the second half of 2014, the international oil price has continued to fall, but in the long term,oil-gas and other one-time non renewable resources are still the most important energy. With the oil and gas resources ageing, and mining technology of offshore oil and gas exploration is still immature, we need put forward more new exploration technologies to explorate old oil feld deeper, more accurately to increase oil and gas reserves.In order to overcome there exists some defects of low precision, low computation, etc. in conventional edge detection methods. And the methods can only process 2D horizontal time(or along the layer) slice. these defects, this paper puts forward a new method for edge detection based on the formation of edge detection precision slicing on the basis of the conventional methods based on Hilbert transform. The method calculates the slices of layer, which extends the range of applications of layer, and it is more realistic for geological conitions underground; And it uses time domain Hilbert transform, the calculate of which is superior to conventional Hilbert the Transform based on the frequency domain. In addition, the calculation process of this method can process viral and horizontal direction Simultaneously for the array of layer slice: first, we preprocess the date using a two-dimensional edge-preserving denoising and then using the time-domain Hilbert transform detecte edge, which not only can to effectively suppress noise, and can further improve the accuracy. The ac al effect of the application of seismic data in the TH area show that this paper puts forward a new method of crack detection coincidence rate is higher than the conventional method of crack detection(Such as the Hilbert transform method correlation method, the method.A good application effect is achieved through the viability study of well ZH in TH area. it is important practical value for the accurate exploration of the areas.