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Keywords: noise
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Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2024
Paper Number: OTC-35178-MS
... design v s profiles. sensor correlation practitioner reservoir characterization conference critical appraisal noise deployment geologist geological subdiscipline repeatability offshore technology conference geology determination scpt downhole mode seismic cone penetration testing...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2024
Paper Number: OTC-35401-MS
... noise application Introduction A reliable monitoring technology used in oil and gas reservoir production or CO 2 geo-storage is 4D seismic ( Lumley, 2010 ). Within the framework of 4D seismic, after a 3D baseline dataset is acquired, every certain period, a 3D monitoring dataset needs...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2024
Paper Number: OTC-35431-MS
... transient testing structural geology artificial intelligence drillstem testing bayesian inversion machine learning derivative numerical simulator inversion pressure transient analysis permeability multiplier geologist reservoir simulation reservoir characterization variance evaluation noise...
Proceedings Papers

Paper presented at the Offshore Technology Conference, August 16–19, 2021
Paper Number: OTC-31049-MS
... noise, or even make the FM detector output jump back and forth between the correct Doppler frequency and the noise. The result is spikes in the mean Doppler time series, and hence increased wave power spectrum energy and Hm0. To understand in detail the nature of this issue, a new high-performance...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2019
Paper Number: OTC-29485-MS
... conditions in terms of borehole diameter, irregularity of its walls (rugosity and/roughness), cavitation issues, fractures and ambient noises (especially at shallow depth), as well as borehole stability. The analysis of the results confirmed that both in-situ testing methods have promising potential...
Proceedings Papers

Paper presented at the Offshore Technology Conference, April 30–May 3, 2018
Paper Number: OTC-28738-MS
..., fluid expulsion, volcanism, and biological activity. If AUV survey design does not consider the practical limits to change detection and include best practices to minimize noise, however, the results may be ambiguous or even useless. Using a series of simulations combining real bathymetric digital...
Proceedings Papers

Paper presented at the Offshore Technology Conference, April 30–May 3, 2018
Paper Number: OTC-28834-MS
... are developing larger offshore wind turbines and legislators are instituting more limitations, for example on the emissions of underwater noise. These developments create additional challenges for upscaling the installation capacity and performance of vessels and pile driving equipment and the development...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 1–4, 2017
Paper Number: OTC-27723-MS
... should be judged based on the acceptable range of variations for inferred parameters as well as related confidence levels. These would lead to an acceptable noise level in the recorded data. Having access to the aforementioned quality control criteria can be very useful for example when the tool...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 2–5, 2016
Paper Number: OTC-27308-MS
... of opportunity. This eliminated the need for compressors, air-hoses, etc. A new streamer design and towing was also developed. During refraction surveying hydrophone streamers are frequently towed very near the seafloor. This introduces substantial noise into the data and can only be done safely on smooth, sandy...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 2–5, 2016
Paper Number: OTC-26938-MS
..., an overview of fiber optic sensing applications will be discussed and their use in Lower Tertiary reservoirs will be evaluated. acoustic behavior wellbore application das acoustic noise color map noise artificial intelligence upstream oil & gas production logging dts in-situ production...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 2–5, 2016
Paper Number: OTC-27026-MS
... and the environment can be significant. The pipeline operator's public image can be damaged with non- negligible economic or political consequences. PipeLIDS has been developed to minimize the consequences of leaks from onshore pipelines. It uses acoustic technology for detection of noise generated by impacts...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 4–7, 2015
Paper Number: OTC-25684-MS
... noise frequency displacement motion measurement fatigue damage upstream oil & gas measurement device response measurement wellhead system calibration fatigue life bop transfer function assessment wellhead fatigue Ward , P. and Rimmer , A. - Evaluation of Wellhead...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 5–8, 2014
Paper Number: OTC-25180-MS
... Abstract Noise attenuation is one of the most important steps in seismic data processing and it directly affects the final imaging quality of seismic data. Traditional de-noising methods can easily eliminate simple noise, such as spike noise or linear noise, but they can't efficiently handle...
Proceedings Papers

Paper presented at the Offshore Technology Conference, April 30–May 3, 2012
Paper Number: OTC-23700-MS
... field ty sand water sweep impedance change noise lithology prediction inversion constraint OTC 23700 New Opportunities from 4D Seismic and Lithology Prediction at Ringhorne Field, Norwegian North Sea David H. Johnston, ExxonMobil Production Co. Upendra Tiwari, ExxonMobil Exploration Co...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 3–6, 2010
Paper Number: OTC-20429-MS
... between the sound generated by multiphase flow noise and increased sand production is distinguishable with regard to frequency content. To assess the prototype system, several candidate wells with sand production issues were selected from the Deepwater Gunashli (DWG) field in Azerbaijan. These wells had...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 5–8, 2008
Paper Number: OTC-19213-MS
... real time system perforation open screen scenario upstream oil & gas log analysis noise gravel sand impairment well logging sensor experiment real-time completion reservoir surveillance production logging gravel pack bakulin production monitoring completion OTC 19213 Real-Time...
Proceedings Papers

Paper presented at the Offshore Technology Conference, April 30–May 3, 2007
Paper Number: OTC-18951-MS
... thickness below 1/8th of a wavelength one cannot separate differences in reflection coefficient magnitude from changes in layer thickness (even in the absence of noise), and thus 1/8th of a wavelength is generally considered the limit of seismic resolution. However, for even impulse pairs, response...
Proceedings Papers

Paper presented at the Offshore Technology Conference, April 30–May 3, 2007
Paper Number: OTC-18933-MS
... to improve depth of penetration. The test also addressed methods to maximize the capture of weak, low-frequency reflection signals. Data examples show that this new OBC technology provides significantly better deep (> 10,000m) data than conventional streamer. At very low frequencies the ambient noise...
Proceedings Papers

Paper presented at the Offshore Technology Conference, April 30–May 3, 2007
Paper Number: OTC-18895-MS
... experiences, review the work undertaken by the JIP and provide initial guidelines to address the issue. Introduction In the last 5 years, a number of offshore installations that utilise flexible risers for single phase gas service have experienced high levels of piping noise and vibration. This has...

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