Reservoir Structural Characterization at Multiple Scales Using

High-goal wellbore estimations, for example, microresistivity pictures are routinely used to characterize auxiliary data, for example, development plunge and azimuth to contrast and low-goal seismic movement. The scale contrasts between microresistivity pictures and seismic pictures go from millimeters to several meters, which is then contrasted and vertical seismic profile (VSP) information at many meters of scale and sonic speeds at under 0.5 m scope. Sonic imaging methods from both monopole and dipole sources can be additionally used to expand the volume of examination around the wellbore and characterize genuine plunge and azimuth of the development broadening 25–30 m into the supply times connection.

When utilizing the dipole hotspot for sonic imaging and recording the single-recipient sensor information, we watch captivated shear reflections that present not simply the straight and sinusoidal moveouts apparent as a component of source-beneficiary counterbalance and ostensible collector azimuth, yet additionally a huge extremity signature that is an element of the mirrored wave’s molecule movement bearing. A variety of 3D gradualness time soundness (STC) is introduced that effectively forms these captivated shear reflections to decide the plunge and azimuth of the reflector. We at that point show how this new 3D STC handling is incorporated into a robotized preparing that finds and portrays the reflected appearances in the separated waveform estimations and afterward maps the relating reflectors in 3D along the well track. Of note is the manner by which the mechanized handling with the new 3D STC variety settle the 180° equivocalness of the reflected dipole signal noted by past creators. This is especially significant when imaging or planning development structure in an exceptionally veered off wellbore, on the grounds that the single-sensor information can picture both above and beneath the wellbore, contrasted and traditional modular disintegrated dipole waveforms, for which recognizing top from base is questionable.

A contextual investigation is introduced from seaward Abu Dhabi, in which an interbedded carbonate repository is analyzed with different acoustics estimations and microresistivity pictures. A point by point auxiliary investigation is directed utilizing a walkabove VSP whereby the moved picture underneath the wellbore is utilized to contrast and the sonic imaging results from azimuthal monopole and dipole sources. Movement pictures from the dipole shear plainly show subseismic-scale layers in correlation with the VSP relocation. Auxiliary plunge and azimuth of these subseismic highlights give detail 30 m into the supply.

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