...) Presentation Type: Oral experiment annual meeting curvilinear mesh horizontal well borehole artificial intelligence upstream oil & gas borehole wall simulation experiment spectral element method curvilinear element hex27 seg international exposition reservoir characterization receiver...

... to the outside media in the radial direction. The collar wave actually recorded at the outer surface of the drill collar is a superposition of the out-going wave radiated from the drill collar and the reflected wave going back from the borehole wall. Thus its characteristics are determined by not only the drill...

... et al. 2014; Parker et al., 2014; Kuvshinov, 2015). Schoenberg (1986) has shown that plane waves whose direction of arrival is parallel to the borehole wall (as in zero- offset VSP surveys) generate vertical motion inside the borehole, with the vertical particle velocities between the formation...

... Summary A monopole or a dipole source in a fluid borehole generates acoustic waves, part of which propagate along the borehole and the other part enter the formation propagating as P- or S-waves. The refracted waves propagating along the borehole wall are used to determine P- and S-wave...

... of the invaded zone, which is accompanied by mudcake buildup on the borehole wall, slowing down the filtration. These processes are controlled by petrophysical properties of the formation, such as porosity, permeability, and fluid saturations. Therefore, the study of invaded zone evolution is very important...

... borehole wall simulation well logging reservoir characterization current source Summary The seismoelectric field excited by purely torsional loading applied directly to the borehole wall is considered. A brief formulation and some computed waveforms show the advantage of using SH-TE...

... is further proven by applying the semblance analysis to the acoustic and electric waveforms. Introduction The LWD apparatus, with sources and receivers located close to the borehole wall and the drill collar taking up a large portion of the borehole, the presence of tool waves is inevitable. The tool...

... ABSTRACT We describe a new technique for making high-resolution velocity images of rocks using refracted ultrasonic waves. The use of refracted waves makes this technique potentially suitable for imaging borehole walls. In the laboratory, we use a single-transmitter, two-receiver first-arrival...

... data show that DOV P-wave radiation from a borehole can in turn be accurately described by diffraction and borehole-wall conversion of the DOV acoustic wave. Introduction DOV acoustic and seismic radiation can be accurately described by two mechanical-equivalence source models. The acoustic...

... borehole wall amplitude borehole orbital vibrator source conventional ov fluid-filled borehole borehole axis reservoir characterization Waves generated by borehole orbital vibrator source Seiji Nakagawa*, Thomas M. Daley, and Ernest L. Majer, E.O. Lawrence Berkeley National Laboratory Summary...

... is to image scattered energy beyond the borehole wall and thus gain a better picture of the reservoir characteristics around the borehole. Introduction to single-well imaging Today, there are several varieties of borehole seismology: tomography or cross-well imaging (transmitter in one borehole and receiver...

... fluid receiver conversion seismic wave borehole model reservoir characterization electroseismic conversion interface borehole wall experimental study lucite section BH 3.13 Experimental Studies of Electrokinetic Conversions in Fluid-Saturated Borehole Models Zhenya Zhu* and M.N. Toksöx...

... acquisition spectrum hydrophone bandwidth geophone vibrator wide bandwidth seismic response conventional single-level tool borehole wall amplitude spectrum data acquisition electronics resonance coupling noise tube wave objective upstream oil & gas receiver tool reservoir...

... ABSTRACT No preview is available for this paper. coupling high-fold data attenuation measurement imaging upstream oil & gas tube wave receiver response source receiver salt flank configuration borehole wall receiver string reflection signal reflector receiver...

... ABSTRACT No preview is available for this paper. radial force dov source borehole wall artificial intelligence source level reservoir characterization anisotropy logic & formal reasoning displacement orbital vibrator source wenjie dong integration equation mathematical...

... finite difference technique phase velocity heterogeneous permeable porous formation geophysics propagation permeability variation virgin formation permeability flow in porous media constant permeability borehole wall attenuation fluid flow porous formation dispersion borehole...

... ABSTRACT No preview is available for this paper. geophone borehole wall reservoir characterization wave record seismic source practical seismic source shot point hydrophone amplitude seismic energy multidisk type downhole seismic source radiation pattern effective energy...

... ABSTRACT No preview is available for this paper. variation multiple reflection series reflection borehole wall transmission matrix coil borehole upstream oil & gas artificial intelligence amplitude conductivity interface array response log analysis gianzero...

... ABSTRACT No preview is available for this paper. equation displacement application waveform relation baseline phase space borehole wall upstream oil & gas acceleration waveform reservoir characterization strain level blow-responded waveform formula blow point...

... ABSTRACT No preview is available for this paper. chung chang spectra frequency chang geophysics borehole sonic spectra interference waveform simulation waveform integration path borehole wall log analysis integration time domain waveform real axis integration upstream oil...