... The main interest of this study is the Before Closure Analysis of the fall-off data to identify fracture closure time and closure pressure by wavelet transformation method. Unlike other methods, wavelet analysis does not require any assumptions regarding to fracture geometry, and it is based...

... of each wavelet. Fracturing treatment pressure signals occur at various frequencies with finite durations that makes it possible to divide the pressure signals into many components and analyze them individually by wavelet transformation. Discrete Wavelet Transformation by Daubechie wavelets...