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Keywords: imaging
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Proceedings Papers

Paper presented at the Offshore Technology Conference, May 4–7, 2020
Paper Number: OTC-30660-MS
... Abstract The Stampede Field is a sub-salt Miocene field in the deepwater Gulf of Mexico. Although it is a generally well imaged structure, development and production requirements warranted an improved image over the field. A variety of seismic data such as Narrow Azimuth (NAz), Wide Azimuth...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2019
Paper Number: OTC-29267-MS
... reproduce in print is restricted to an abstract of not more than 300 words; illustrations may not be copied. The abstract must contain conspicuous acknowledgment of OTC copyright. Abstract This laboratory study explores the geophysical imaging applications of a fiber optic sensing system in a marine...
Proceedings Papers

Paper presented at the Offshore Technology Conference, April 30–May 3, 2018
Paper Number: OTC-28715-MS
... inches beyond the wellbore. Far-field microseismic mapping offers an image of micro-earthquakes that are caused by shear slippage during a hydraulic fracture treatment. Although the location of the associated microseismic events enables spatial mapping of the stimulated rock volume, particularly its...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 1–4, 2017
Paper Number: OTC-27850-MS
...) improved subsurface imaging to increase flexibility in well trajectories; (c) deepened integration between completion choices and well designs; (d) technical functionality rationalization; and (e) supply chain improvements. This paper highlights the key change management lessons learned that took place...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 2–5, 2016
Paper Number: OTC-26993-MS
... proven to be a very successful technique for both 3D and 4D imaging below complex salt overburden in the deep water Gulf of Mexico, where more than 25 OBN surveys have been conducted in the last ten years. Deep water OBN 3D and 4D surveys have also been successfully conducted in offshore West Africa and...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 4–7, 2015
Paper Number: OTC-25798-MS
... target - so as well as providing an image of the drilling targets, the seismic survey is must deliver reliable information about the overburden to mitigate drilling surprises. In addition, economic challenges reflect the need to acquire data over large areas in a cost-effective manner, but without...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 4–7, 2015
Paper Number: OTC-25912-MS
... onto vessels of opportunity, limited the systems that could be used at the time. Therefore, the bathymetric model that was produced, for example, was useful, but limited by a swath bathymetry system that could only image to ~210m of water depth while PSA contract area water depths vary between 96 and...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 4–7, 2015
Paper Number: OTC-26004-MS
...OTC-26004-MS Seismic Processing Workflow with an Integrated Model Building Toolkit Significantly Improves Imaging in Shallow Water, Complex Salt Province G. Zhu, and D. Smith, Schlumberger Copyright 2015, Offshore Technology Conference This paper was prepared for presentation at the Offshore...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 5–8, 2014
Paper Number: OTC-25095-MS
... Abstract In marine oil and gas exploration of seismic data acquisition, both primary and multiple reflections are recorded at the streamers. In seismic data processing, primaries are usually used as signal to image the subsurface; multiples are regarded as noise to be removed (SRME) (Verschuur...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 5–8, 2014
Paper Number: OTC-25241-MS
... Abstract The objective of seismic acquisition and imaging is to recover the true properties of the earth. Major obstacles to obtaining this ideal goal are: the bandwith of the emitted source signals, the spatial sampling of the seismic survey and spatial aliasing, the aperture of the...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 5–8, 2014
Paper Number: OTC-25381-MS
... modeling and change detection to employ a 3D laser sensor, thereby improving model resolution and accuracy by an order of magnitude, from centimeter scale to millimeter scale. AUVs outfitted with 3D Laser imaging systems will provide new, high accuracy tools for subsea integrity management that are...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2013
Paper Number: OTC-24149-MS
... difficult to identify. Correcting for attenuation during the model building and imaging stages of processing creates the opportunity to relate attenuation factors to the subsurface model and hence have geologic constraints on the attenuation factors and permits the application of a attenuation correction...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2013
Paper Number: OTC-24123-MS
... Abstract In recent years, it has become the standard practice in deep water Gulf of Mexico (GOM) to perform seismic imaging assuming tilted transverse isotropy (TTI) symmetry to describe the anisotropic effects of wave propagation in salt-withdrawal mini-basins. When compared to isotropic and...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2013
Paper Number: OTC-24132-MS
... performance computing capacities. Second, new acquisition techniques such as wide-azimuth have improved the illumination of the subsurface, filling gaps in the images. Lastly, progress in depth imaging led to a better understanding of the structures, which improved the description of the subsurface. This...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2013
Paper Number: OTC-24173-MS
... Abstract Until very recently, the petroleum system of Brazilian presalt reservoirs could not count on good enough seismic imaging to support the seismic interpretation. In the 90's, the decision of Petrobras to expand its exploration frontiers towards the sedimentary basins of EspÍrito Santo...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2013
Paper Number: OTC-24107-MS
... Abstract In January 2011, 3D at Depth was awarded a RPSEA contract to bring high-resolution three-dimensional (3D) laser imaging technology from the lab into an underwater environment for the oil and gas industry. Throughout the project, CDL Inc. provided expert engineering support and...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2013
Paper Number: OTC-24206-MS
... Abstract The soaring cost of drilling in deep-water environments leads to a strong demand for high-quality interpretable images and associated models, both products of seismic imaging, in many basins around the world. Anisotropic models more closely represent the real earth's properties. Using...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2013
Paper Number: OTC-24135-MS
... uncertainty estimates that were obtained are being used in building the next generation static model for St. Malo. Subsurface setting and reference imaging A collaborative, multi-organization depth uncertainty analysis was conducted (involving two E&P companies and a geophysical contractor) over the St...
Proceedings Papers

Paper presented at the Offshore Technology Conference, April 30–May 3, 2012
Paper Number: OTC-23556-MS
... Abstract Geophysical imaging and subsurface characterization for offshore petroleumexploration and reservoir characterization face increasingly demandingrequirements for reliability and for providing increased information about theearth's subsurface. New methods for data acquisition, data...
Proceedings Papers

Paper presented at the Offshore Technology Conference, April 30–May 3, 2012
Paper Number: OTC-23006-MS
... Abstract In January 2011, 3D at Depth was awarded a RPSEA contract to bringhigh-resolution three-dimensional (3D) laser imaging technology from the labinto an underwater environment for the oil and gas industry. During theproject, CDL Inc. provided expert engineering support and materials to...

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