Seismic time-frequency analysis methods can be used for hydrocarbon detection because of the phenomena of energy and abnormal attenuation of frequency when the seismic waves travel across reservoirs. A high-resolution method based on variational mode decomposition (VMD), continuous-wavelet transform (CWT) and frequency-weighted energy operator (FWEO) is proposed for hydrocarbon detection in tig...

With growing global demand for hydrocarbons and decreasing conventional reserves, the gas industry is shifting its focus in direction of unconventional reservoirs. Tight reservoirs have typically been deemed uneconomical due to their low permeability which understood be below 0.1mD, requiring advanced drilling techniques stimulation enhance hydrocarbons. However, first step determining economic...

Tight gas reservoirs are mainly developed by multistage hydraulic fracturing horizontal wells (MSHFHWs). A type well provides average production profiles based on real data and can be constructed from multiple to investigate the behavior of reservoir. For unconventional reservoirs, key reserve calculations medium- long-term field development planning. Both geological completion parameters facto...

HOUSTON–The fundamental properties of gas shales make them virtually impossible to analyze with conventional core analysis methods or petrophysical models based on log data. This includes permeabilities in the tens to hundreds of nanoDarcies, low effective porosities (typically less than 10 percent), and high kerogen and clay contents. The tightness of the rock and the abundance of clay mineral...