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Keywords: reflection
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Proceedings Papers

Paper presented at the SPWLA 61st Annual Logging Symposium, June 24–July 29, 2020
Paper Number: SPWLA-5020
... around the wellbore and define true dip and azimuth of the formation extending 25–30 m into the reservoir. When using the dipole source for sonic imaging and recording the single-receiver sensor data, we observe polarized shear reflections that present not just the linear and sinusoidal moveouts evident...
Proceedings Papers

Paper presented at the SPWLA 60th Annual Logging Symposium, June 15–19, 2019
Paper Number: SPWLA-2019-XXX
... wall enables the rotation of the tool reference frame to be aligned with the sagittal plane from the deep shear wave image (i.e., the plane in which the reflection occurs. Note that the strike of the reflector equals the azimuth of the sagittal plane). With this borehole image-based adjustment the...
Proceedings Papers

Paper presented at the SPWLA 58th Annual Logging Symposium, June 17–21, 2017
Paper Number: SPWLA-2017-W
... ABSTRACT Imaging features away from the wellbore using energy propagated into the formation by wireline acoustic tools has recently become an accepted formation evaluation technology. This technology is based on applying seismic imaging techniques to energy reflected by planar features in the...
Proceedings Papers

Paper presented at the SPWLA 58th Annual Logging Symposium, June 17–21, 2017
Paper Number: SPWLA-2017-V
... safely drilling a stable wellbore and to optimising production, particularly in tight or shale reservoirs. log analysis Upstream Oil & Gas reflection Symposium well logging open fracture receiver Artificial Intelligence stimulation Shear Anisotropy spwla 58 transmitter perforation...
Proceedings Papers

Paper presented at the SPWLA 57th Annual Logging Symposium, June 25–29, 2016
Paper Number: SPWLA-2016-ZZZ
.... log analysis orientation wave imaging hydraulic fracturing stimulation reflection hydraulic fracture wellbore Reservoir Characterization Upstream Oil & Gas deep shear wave imaging result Symposium acquisition fracture well logging Imaging borehole azimuth anisotropy shear wave...
Proceedings Papers

Paper presented at the SPWLA 57th Annual Logging Symposium, June 25–29, 2016
Paper Number: SPWLA-2016-MMM
... selection and formulation drilling fluid formulation impedance spwla 57 drilling fluid property casing and cementing borehole fluid reflection drilling fluid chemistry drilling fluids and materials frequency Thickness evaluation kHz application well integrity assurance integrity assurance...
Proceedings Papers

Paper presented at the SPWLA 55th Annual Logging Symposium, May 18–22, 2014
Paper Number: SPWLA-2014-FFFF
... polarity reflection VSP tube wave hydrophone optical data Symposium cable reflector acquisition SPWLA 55th Annual Logging Symposium, May 18-22, 2014 OPTICAL VERTICAL SEISMIC PROFILE ON WIRELINE CABLE B. G. Frignet and A. H. Hartog, Schlumberger Copyright 2014, held jointly by the Society of...
Proceedings Papers

Paper presented at the SPWLA 53rd Annual Logging Symposium, June 16–20, 2012
Paper Number: SPWLA-2012-207
... bridging of the gap between the large scale, as provided from seismic, to the meso- and microinformation provided by logs and core. However, with modern borehole acoustic tools, meticulous data acquisition and adaptive processing algorithms, we can generate a borehole acoustic reflection survey (BARS...
Proceedings Papers

Paper presented at the SPWLA 51st Annual Logging Symposium, June 19–23, 2010
Paper Number: SPWLA-2010-30674
... ABSTRACT: An integrated approach for evaluating reservoir fractures using borehole acoustic-log data is presented. This approach combines borehole ultrasonic imaging, Stoneley-wave reflection, cross-dipole anisotropy, and the recently developed shear-wave reflection imaging techniques to...
Proceedings Papers

Paper presented at the SPWLA 49th Annual Logging Symposium, May 25–28, 2008
Paper Number: SPWLA-2008-AAA
... scale with higher resolution tools reading shallowt'r than tower resolution ones. Type Of Fractures: Natural And Induced Fractures Detectable borehole fractures can be either natural in origin or induced by the drilling process. Natural fractures reflect the tectonic stress fields that created them...
Proceedings Papers

Paper presented at the SPWLA 49th Annual Logging Symposium, May 25–28, 2008
Paper Number: SPWLA-2008-Q
... data quality casing and cementing Thickness Exhibition algorithm acoustic impedance equation waveform Upstream Oil & Gas pipe thickness reflection Symposium fiberglass log analysis casing design foam cement free pipe amplitude spwla 49th The Fourier Transform Applied to Cased...
Proceedings Papers

Paper presented at the SPWLA 47th Annual Logging Symposium, June 4–7, 2006
Paper Number: SPWLA-2006-SS
... VSP fracture trend Upstream Oil & Gas Cuitlahuac Field maximum stress direction azimuth reflection multicomponent survey design Symposium acquisition orientation shear wave fracture orientation Mexico spwla 47 anisotropy multicomponent surface SPWLA 47th Annual Logging Symposium...
Proceedings Papers

Paper presented at the SPWLA 42nd Annual Logging Symposium, June 17–20, 2001
Paper Number: SPWLA-2001-OO
... thin gas intervals is quite significant, especially for enhancing production in heavy oil reservoirs. This paper describes the acoustic determination of thin gas intervals using Stoneley wave reflection and high-resolution slowness measurements. A gas-saturated interval has drastically different fluid...
Proceedings Papers

Paper presented at the SPWLA 40th Annual Logging Symposium, May 30–June 3, 1999
Paper Number: SPWLA-1999-TT
... permeability Fluid Dynamics borehole NMR Symposium University attenuation Baker Atlas Stoneley permeability Stoneley wave NMR permeability flow in porous media Tang reflection micro porosity porosity fluid property estimation permeability interpretation elastic model SPWLA 40h Annual...
Proceedings Papers

Paper presented at the SPWLA 38th Annual Logging Symposium, June 15–18, 1997
Paper Number: SPWLA-1997-R
.... Stoneley wave reflections and attenuation analysis are known techniques for fracture evaluation. They have the advantage of showing open permeable fractures but also are sensitive to borehole irregularities. Stoneley modeling, when added to these techniques, estimates the effect of the borehole and...
Proceedings Papers

Paper presented at the SPWLA 37th Annual Logging Symposium, June 16–19, 1996
Paper Number: SPWLA-1996-HH
... procedures: wave separation,. wave modeling, and fracture hydraulic conductivity estimation. The first procedure separates Stoneley waves into transmitted and reflected wavefields. The second procedure corrects the effects of borehole irregularity (e.g.. enlargement, washout, etc.) on the Stoneley waves; it...
Proceedings Papers

Paper presented at the SPWLA 36th Annual Logging Symposium, June 26–29, 1995
Paper Number: SPWLA-1995-FFF
... measured signals showed that detection of the short-range reflections can significantly be improved with cross-polarization measurements since direct coupling between the transmitting and receiving antennas is reduced. Applying an inverse filter method to compensate antenna characteristics, polarization...
Proceedings Papers

Paper presented at the SPWLA 34th Annual Logging Symposium, June 13–16, 1993
Paper Number: SPWLA-1993-CC
... study reflection televiewer Upstream Oil & Gas BHTV amplitude fracture wellbore fracture characterization fracture intensity log image azimuth quantitative fracture identification hydraulic fracturing borehole televiewer study interval core fracture study FRACTURE data SPWLA 34th...
Proceedings Papers

Paper presented at the SPWLA 32nd Annual Logging Symposium, June 16–19, 1991
Paper Number: SPWLA-1991-KK
... and gives a response similar to fluid behind the casing. Reflections from hard formations or second casing strings [4,5] and early arrivals through fast formations pose additional problems and often invalidate the measurements. Improved methods of qualitative interpretation and new environmentally...
Proceedings Papers

Paper presented at the SPWLA 32nd Annual Logging Symposium, June 16–19, 1991
Paper Number: SPWLA-1991-GG
... without significant reflection, because of the dissipation of wave energy into the permeable zone. Several field cases are also modeled and the theoretical results are compared with the field data. It is shown that low-and medium-frequency Stoneley waves (1 kHz data from Moodus, Connecticut, and 5 kHz...

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