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Loop layout for a 3D survey

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Proceedings Papers

Paper presented at the 2010 SEG Annual Meeting, October 17–22, 2010
Paper Number: SEG-2010-0588
... target. Next, we in- vert the inline component of E-field synthetic data from a con- ductive prism. This validates our code and also yields insight about the ISR survey design. Finally, a field dataset is inverted to showcase how a 3D conductivity model can be generated from multi-loop ISR data...
Proceedings Papers

Paper presented at the SPE Middle East Oil & Gas Show and Conference, March 8–11, 2015
Paper Number: SPE-172734-MS
... and is independent of the distance to the source. The sources and receivers in TEM field surveys are commonly multi-offset systems with square loops. where 0 is the vacuum magnetic permeability. Processing TEM data consists in deriving apparent resistivities from decaying voltage values at different transient...
Proceedings Papers

Paper presented at the ISRM 3rd Nordic Rock Mechanics Symposium - NRMS 2017, October 11–12, 2017
Paper Number: ISRM-NRMS-2017-007
... zones GSI varies between 34 38. 3D simulation results were used to validate the layout and preliminary rock reinforcement design. 5.1. Station simulations The in situ stress state at the station was estimated based on earlier stress measurements in the region. Sensitivity to stress state was checked...
Proceedings Papers

Paper presented at the 2002 SEG Annual Meeting, October 6–11, 2002
Paper Number: SEG-2002-0665
... the conductive target, the use of a TEM survey with an off-set transmitter loop can give the same information as an MMR survey, without the logistical and safety draw-backs of requiring a large grounded bipole transmitter. Approximate 3D 3-Component EM modeling Weak conductors are rarely amenable to modeling...
Proceedings Papers

Paper presented at the 1991 SEG Annual Meeting, November 10–14, 1991
Paper Number: SEG-1991-0410
... sections can be extracted by 1D analysis. The layout of transmitter and receiver stations is shown in Figure 2. Thus, data were collected using both non- grounded loops and grounded line transmitter sources. For each non- grounded loop stations were occupied both in the center and outside the loops...
Proceedings Papers

Paper presented at the 2014 SEG Annual Meeting, October 26–31, 2014
Paper Number: SEG-2014-1373
... by adaptive random down-sampling of the soundings. GROUND TEM Except for the surveys using a small moving loop, the spa- tial layout of ground survey can be more complicated: (1) the transmitter loop is much larger than a magnetic dipole and can be arbitrarily shaped; (2) one transmitter may have many re...
Proceedings Papers

Paper presented at the 1998 SEG Annual Meeting, September 13–18, 1998
Paper Number: SEG-1998-0098
... criteria for the evaluation of 3D seismic in terms of stratigraphic and reservoir fluid objectives. Methodology The approach used for 3D design optimization consists of an integrated loop, including processing, modeling and interpretation as illustrated in Figure 1. Starting from constraints and data given...
Proceedings Papers

Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2997180
... electromagnetic survey, the survey line is arranged east to west according to the working layout of the survey area. The line distance is 1m.The drone system parameters are 2.5m and 9 turns on the transmit loop, 0.5 m and 9 turns on the receive loop, 0.5 on the height of flight. According to the original data...
Proceedings Papers

Paper presented at the 2012 SEG Annual Meeting, November 4–9, 2012
Paper Number: SEG-2012-0837
... Kelvin) and cooled with liquid nitrogen. Two large loops were used to Figure 1: Lalor Lake VMS deposit. © 2012 SEG DOI httpdx.doi.org/10.1190/segam2012-0837.1 SEG Las Vegas 2012 Annual Meeting Page 1 Main Menu 3D inversion of SQUID TEM data energize the ground and for each of them two lines of three...
Proceedings Papers

Paper presented at the 2016 SEG International Exposition and Annual Meeting, October 16–21, 2016
Paper Number: SEG-2016-13874209
... exhibited the same location and trend direction (277°) as the red body (fig.3b) modelled in 3D. Fig. 2. Site #2, L0. Profiles of X, Y and Z components, at 15 Hz, with channels 1 to 29 (0.08 to 16.484 msec). (a) (b) Fig. 3. Site #2 (a) Plan view of the 50 x 50m square-loop layout with surveyed lines...
Proceedings Papers

Paper presented at the 1990 SEG Annual Meeting, September 23–27, 1990
Paper Number: SEG-1990-0487
... targets. To obtain good lateral resoluticn~ in the conductivity sec- tions, a technique caged Depth fnrage Processing was applied to the data. The layout of the transmitter loops and the survey line required by the pro- cessing melhod is shown in Figure 3. ?he line runs through the centre of a sequence...
Proceedings Papers

Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2998625
... steps in a given seismic processing workflow. In this work, we overview the theory and implementation of both 2D and 3D Kirchhoff-based wavefield continuation. We implement these continuations in the frequency domain, where the generalized workflow is: Data FFT LOOP over frequencies: {LOOP over output...
Proceedings Papers

Paper presented at the SPE Middle East Oil and Gas Show and Conference, March 10–13, 2013
Paper Number: SPE-164227-MS
... significantly improved by the WAZ data. With the conventional 3D seismic data, mapping the top of the carbonate reservoir was very difficult due to the poorly imaged seismic event. The approach taken then was to map the base horizon loop event.. The mapped base loop was then used to create an isochore...
Proceedings Papers

Paper presented at the SPE/IADC Middle East Drilling Technology Conference & Exhibition, October 7–9, 2013
Paper Number: SPE-166748-MS
... more flexible. Modern camera systems are capable of displaying several camera images on a single screen. A split screen or a quad screen arrangement is an ideal layout which enables the driller to view all key areas at the same time. Service loop arrangement In addition to integrating the Top...
Proceedings Papers

Paper presented at the 2017 SEG International Exposition and Annual Meeting, September 24–29, 2017
Paper Number: SEG-2017-17788637
... ABSTRACT In 2015/2016, SAExploration acquired Aklaq 3D; a nodal, vibroseis, 425mi blended 3D seismic survey on the Alaskan North Slope, which was processed by ConocoPhillips. The project used source and receiver locations optimized through Non-Uniform Optimal Sampling (NUOS) (Mosher et.al...
Proceedings Papers

Paper presented at the SPE Asia Pacific Oil and Gas Conference and Exhibition, October 8–10, 2002
Paper Number: SPE-77819-MS
..., seismology, wellbore geomechanics, subsea engineering, facilities engineering, drilling engineering, and completions engineering. The team was supported by state-of-the-art 3D visualisation technology to display and interpret the data gathered during the offshore survey campaign (described in more detail...
Proceedings Papers

Paper presented at the 2006 SEG Annual Meeting, October 1–6, 2006
Paper Number: SEG-2006-0633
... on the landform where the observation point is. Topographic effects in central loop TEM data Working layout Figure 1 is a plan and contour line of Hancheng exploration area. Both survey line and point space is 40 m. Transmitter loop is 600 m×600 m, the middle 200 m×200 m of which is receiving area...
Proceedings Papers

Paper presented at the 2017 SEG International Exposition and Annual Meeting, September 24–29, 2017
Paper Number: SEG-2017-17723832
... Annual Meeting Page 5782 High-resolution 3D and 4D 2D Repeatability tests of HR3D To prove the repeatability of HR3D data we acquired baseline and (zero-time) repeat monitor lines over two 10km long sail-lines in the GoM. Each pair of repeat lines were co-processed as a 2D time-lapse survey. Figure 2...
Proceedings Papers

Paper presented at the 2005 SEG Annual Meeting, November 6–11, 2005
Paper Number: SEG-2005-0056
... of 3D seismic acquisition. While survey methods have evolved with improvements in technology, the standard technique has been to mark points with stakes and/or flagging prior to recording operations. This leads to numerous problems resulting from the time lag between surveying and recording...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 4–7, 2009
Paper Number: OTC-20289-MS
... in 3D to avoid expensive regularization schemes. The sensitivity of the gradient-based inversion to the starting model is addressed by investing considerable effort in building 1D inversion-based starting model. At the same time, 3D inversion algorithms for survey layouts including azimuthal data...

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