Seismic Exploration of Hydrocarbons in Heterogeneous by Jing Ba

By Jing Ba

Seismic Exploration of Hydrocarbons in Heterogeneous Reservoirs: New Theories, tools and purposes relies at the box examine carried out during the last decade by way of an authoring crew of 5 of the world’s top geoscientists.

In fresh years, the exploration goals of worlds oil businesses became extra advanced. The direct detection of hydrocarbons in response to seismic wave info in heterogeneous oil/gas reservoirs has turn into a scorching spot within the learn of utilized and exploration geophysics. The proper theories, ways and functions, which the authors have labored on for years and feature verified mature technical procedures for commercial software, are of important desiring to the additional learn and perform of engineers, researchers and scholars in comparable zone.

  • Authored through a workforce of geophysicists in and academia with a number of box, guideline, and learn adventure in hydrocarbon exploration
  • Nearly two hundred figures, pictures, and illustrations reduction within the realizing of the elemental thoughts and techniques
  • Presents the newest learn in wave propagation idea, unconventional assets, experimental learn, multi-component seismic processing and imaging, rock physics modeling and quantitative seismic interpretation
  • Sophisticated method of study systematically varieties an commercial paintings move for geoscience and engineering practice

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This causes an overall stiffening of the rock and, hence, higher wave velocities. At intermediate frequencies, wave-induced pressure diffusion leads to dissipation and thus to attenuation and dispersion. This is known as WIFF. Note, however, that WIFF does not imply any net fluid flow through the rock. In order to understand WIFF, let us first analyze the parameters that control fluid pressure diffusion. For a patchy-saturated rock, Norris (1993) shows that the fluid pressure equilibration process is governed by a diffusion equation with pressure diffusivity (sometimes referred to as hydraulic diffusivity): Dp = κ N.

For a patchy-saturated rock, Norris (1993) shows that the fluid pressure equilibration process is governed by a diffusion equation with pressure diffusivity (sometimes referred to as hydraulic diffusivity): Dp = κ N. 1) It is directly proportional to the flow permeability, κ , and inversely proportional to the shear viscosity of the fluid, mf. Since the rock matrix is deformable, 48 Seismic Exploration of Hydrocarbons in Heterogeneous Reservoirs the pressure diffusivity also depends on a combination of the fluid bulk modulus, Kf, solid-phase bulk modulus, Ks, drained rock bulk modulus, K0, and shear modulus, m.

3). The CT imaging allows us to infer the fluid distribution inside the rock sample during saturation (water imbibition). 2 × 1 mm3 (voxel size). Each pixel of the CT scan has a “CT value,” which is a proxy for the X-ray absorption, and is thus directly related to the density of the scanned sample given in Hounsfield units. The resolution is not sufficient to ­image the exact fluid patch geometry; however, it shows the overall character of the fluid distribution. Consecutive scans of the rock sample during injection reflect the presence of water.

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