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Keywords: signature
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Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2024
Paper Number: OTC-35083-MS
... of the tandem deployment mechanism. A site characterization survey in 2012 in northwestern Oman demonstrates the ability of passive geochemical sorbers to identify and map elevated hydrocarbon signatures, from a depleted gas reservoir, along fault segments, identifying current leak points that rendered...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 2–5, 2022
Paper Number: OTC-31743-MS
.... A site characterization survey in northwestern Oman demonstrates the ability of passive geochemical sorbers to identify and map elevated hydrocarbon signatures along certain fault segments, showing that an associated reservoir was unsuitable for sequestration purposes. A CO 2 monitoring program...
Proceedings Papers

Paper presented at the Offshore Technology Conference, August 16–19, 2021
Paper Number: OTC-30975-MS
... a pilot study to assess the viability of passive hydrocarbon modules to function properly in real world conditions in deep waters at elevated pressures. Water depth for the pilot survey ranged from 1500 – 1700 meters. Positive thermogenic signatures were detected in the Gabon samples. A baseline (i.e...
Proceedings Papers

Paper presented at the Offshore Technology Conference, August 16–19, 2021
Paper Number: OTC-30930-MS
... to simultaneously monitor entire length of the well recording both acoustic and temperature profiles. Distributed Acoustic Sensing (DAS) was used to record acoustic signature of the well helping to determine the leak origin and likely pathway, while Distributed Temperature Sensing (DTS) was used to record well...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2019
Paper Number: OTC-29216-MS
... production equipment signature artificial intelligence recognition slip ratio vibration level replacement neural network installation acoustic signature operator sensor array information early warning boundary condition subsea pump harmonic vibration level acoustic sensor machine learning...
Proceedings Papers

Paper presented at the Offshore Technology Conference, April 30–May 3, 2018
Paper Number: OTC-29023-MS
... below the surface, weak surface current signature). All surface rings presented maximum currents well above 1m/s while one ring peaked at 1.65 m/s. The subsurface ring was unique in nature as near-surface currents peaked at ~0.6m/s while the sub-surface currents peaked at ~1.2m/s. The impact of some...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 1–4, 2017
Paper Number: OTC-27801-MS
... occurring on days of Kp 5 or greater will generate marine magnetometer signatures that may be misinterpreted as archaeological sites. Aggressive processing, analysis, and comparison of single instrument, total field marine magnetometer datasets were unable to isolate and remove the storm sudden onset...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 2–5, 2016
Paper Number: OTC-26897-MS
... that concentrates hydrocarbon signatures over a specified period of time. The result is a 1,000-fold increase in sensitivity that reaches the part per billion (ppb) range instead of the part per million (ppm) level of conventional methodologies. Sensitivity is critically important when assessing the presence...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 5–8, 2014
Paper Number: OTC-25225-MS
... and shallow sub-seabed between the exploration phase, the start-up and the production phases. amplitude overburden time shift dataset underwater monitoring modification monitoring velocity change time lapse acquisition reservoir characterization signature anomaly subsea installation...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2013
Paper Number: OTC-23948-MS
... testing buoyancy module temperature measurement otc 23948 signature detection ambient spatial resolution breach test resolution upstream oil & gas temperature difference downhole sensor reservoir surveillance offshore technology conference completion monitoring systems/intelligent wells...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2013
Paper Number: OTC-24241-MS
... describing the Wave Glider multi-sensor signatures to known hydrocarbon concentrations in typical marine elastic and inelastic scattering background environments. A series of experiments were independently conducted in both controlled laboratory conditions and also in a controlled spill facility, with ground...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 5–8, 2008
Paper Number: OTC-19185-MS
... profile data studied in time and depth would always produced definite sand production signatures above a predetermined value of 1, in time for a specific production index and sanding factor Kds, which would allow the evaluation of sand produced in the reservoir. Also sand signatures were indicated...
Proceedings Papers

Paper presented at the Offshore Technology Conference, April 30–May 3, 2007
Paper Number: OTC-18933-MS
... upstream oil & gas source configuration obc data air gun array otc 18933 acquisition system frequency source signature source array noise amplitude spectra configuration frequency content low frequency content streamer signature streamer data acoustic blanket reservoir...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 3–6, 2004
Paper Number: OTC-16942-MS
... feathering. Inadequate spatial sampling causes aliasing artifacts. These can be reduced by f-k filtering at the expense of limiting the bandwidth in the predicted multiples. Source signature variations create artifacts in predicted multiples due to spatial discontinuities. Variations from a well-behaved...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2002
Paper Number: OTC-14274-MS
... offshore technology conference mound green canyon survey area sidescan sonar petroleum seep sediment reservoir characterization us government mud mound otc 14274 sager louisiana continental slope signature seismic signature high bs otc 14274 anomaly survey area macdonald otc...
Proceedings Papers

Paper presented at the Offshore Technology Conference, April 30–May 3, 2001
Paper Number: OTC-13163-MS
... the seismic systems themselves, the so-called "noise behind the signal." We can divide the perturbations experienced in seismic into: Those that affect the received signal, such as sensor sensitivity variations and ambient noise, such as swell. Those that affect the emitted source signature, such as Shot...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 4–7, 1998
Paper Number: OTC-8595-MS
... hydrocarhon seep signature active oil seep side-scan sonar mound reservoir characterization seep seafloor otc 8595 carhonate mound interpretation louisiana slope area digital side scan sonar survey sediment upstream oil & gas hackscatter tlow downslope sonar survey...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 1996
Paper Number: OTC-8001-MS
...@wnl d$vfwre mcfbyMmnrthewws presentad Abstract A three-dimensional inversion technique is developed to investigate the structure of the oceanic crust, using high quality offshore bathymetry, gravity and seismic data. The gravity signatures associated with variations in the thickness of the oceanic...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 1991
Paper Number: OTC-6558-MS
.... Digital statistical deconvolution processes assume that the source wavelet is minimum phase. The quality of the output from these deconvolution processes degrades as the pulse departs from minimum phase. An acoustic source which delivered the same acoustic signature for an indefinite period of time would...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 2–5, 1988
Paper Number: OTC-5643-MS
... Abstract This new technique estimates the airgun array signature directly from marine seismic data and uses that estimate to phase compensate the deconvoluted data, followed by a bandlimiting filter matched to the estimated source signature. The array signature is simulated by a gaussian...

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