Determination of Anisotropy Using Fullwaveform Sonic

Cross-dipole array acoustic logging technology can determine the shear wave of formation by measuring the flexural wave, which can be used to study the formation anisotropy. Anisotropy is a phenomenon where certain physical properties vary with direction. It can be caused by in-situ stress, fractures, and sharp bedding boundaries. This paper attains anisotropy by dipole shear imager (DSI) and combining the results with Full bore formation micro imager (FMI). Identification of anisotropy due to stress and fracture lead to better understanding of the reservoir. Analysis of anisotropy in the well shows that anisotropy defines the whole interval accurately and consistently. In this research characterization of fracture parameters is performed using Image Log in one of the well in the south of Iranian gas field. For this purpose we used software for Image generation and Enhancement and Analysis of it

کلیدواژه ها:

Dipole Shear sonic Imager ، Anisotropy ، Full bore formation micro imager ، Fracture