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Keywords: noise
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Proceedings Papers

Paper presented at the International Petroleum Technology Conference, February 12, 2024
Paper Number: IPTC-23665-EA
... diverse datasets, operating independently of well data. It effectively addresses noise reduction, distinguishing geological features from disturbances and by improving the signal-to-noise ratio, and implements enhancements to the frequency spectrum through a nonlinear approach. The research endeavors...
Proceedings Papers

Paper presented at the International Petroleum Technology Conference, February 12, 2024
Paper Number: IPTC-23888-MS
...) or domain-shifted data distributions. The FL setup is implemented using the well-established Flower framework. The experiment involves injecting noise into 3D seismic data and subsequently employing various ML algorithms to eliminate this noise. All experiments were conducted using both IID and Non-IID...
Proceedings Papers

Paper presented at the International Petroleum Technology Conference, February 12, 2024
Paper Number: IPTC-23336-MS
... approach was taken in spectral noise logging technology. The challenge however remains for slow building leaks for which higher sensitivity sensors are required. Recently, an innovative Tri-Axial Geophones (TAG) based logging technology was introduced and mobilized across several fields to detect sources(s...
Proceedings Papers

Paper presented at the International Petroleum Technology Conference, February 12, 2024
Paper Number: IPTC-23519-MS
... bottom depths. In both laterals, inflow zones detected by acoustic sensor during flowing condition had uniform signature. The absence of localized noise events confirms matrix flow without fracture flow contribution. The new methodologies and upgraded hardware proved that it can be used as the new...
Proceedings Papers

Paper presented at the International Petroleum Technology Conference, February 12, 2024
Paper Number: IPTC-23666-EA
... diffusion probabilistic models. First, we generated several thousands of geologic realizations covering a wide range of spatial subsurface uncertainties. Secondly, we added various amounts of gaussian noise to these realizations and trained a U-Net to predict the added noise based on the corresponding...
Proceedings Papers

Paper presented at the International Petroleum Technology Conference, March 1–3, 2023
Paper Number: IPTC-22948-EA
.... The legacy data processing was limited to the application of dip-filter-based noise attenuation, pre-stack time imaging and post-stack survey merging, which leads to unresolved geophysical challenges associated with each process. In this study, a cascaded application of surface-wave and coherent noise...
Proceedings Papers

Paper presented at the International Petroleum Technology Conference, March 1–3, 2023
Paper Number: IPTC-23102-EA
... Abstract Distributed Acoustic Sensing (DAS) and Distributed Temperature Sensing (DTS) measurements are technologies which are adding some benefits in the aim to replace or complete traditional logging measurements like noise logging tools (NLT) or production logging tools (PLT). The aim of well...
Proceedings Papers

Paper presented at the International Petroleum Technology Conference, March 23–April 1, 2021
Paper Number: IPTC-21251-MS
... layered subsurface geological features with steeply dipping beds are better defined, with artifacts from the conflicting dips removed. reservoir characterization enhancement method geophysics noise seismic resolution structural geology resolution enhancement implementation bandwidth ensdr...
Proceedings Papers

Paper presented at the International Petroleum Technology Conference, January 13–15, 2020
Paper Number: IPTC-19618-ABSTRACT
... geometry of the seismic data caused the aliasing of the surface wave. The application of harsh de-noising techniques in the vintage processing further deteriorated the fault definition. Thus, to tackle the aliasing problem, 5D trace densification and regularization was applied to increase the input data...
Proceedings Papers

Paper presented at the International Petroleum Technology Conference, January 13–15, 2020
Paper Number: IPTC-19948-Abstract
... signal green function international petroleum technology conference Upstream Oil & Gas low frequency seismic exploration amplitude noise exploration Holzner R. , Eschle P. , Zurcher H. , Lambert M. , Graf R. , Dangel S. , Meier P.F . 2005...
Proceedings Papers

Paper presented at the International Petroleum Technology Conference, March 26–28, 2019
Paper Number: IPTC-19228-MS
... quality. Besides, some seismic data are processed more than 10 years ago, the signal to noise ratio (SNR) is relative low due to the random noise and coherent noise like acquisition footprint anomalies. The acquisition footprint artifacts caused by acquisition and processing seriously suppress the true...
Proceedings Papers

Paper presented at the International Petroleum Technology Conference, March 26–28, 2019
Paper Number: IPTC-19285-MS
... Least-squares migration (LSM) has become an increasingly important imaging tool in the seismic industry. It can successfully address imaging issues related to insufficient illumination and mitigate both migration artifacts and noise. More recently, a number of case studies from around...
Proceedings Papers

Paper presented at the International Petroleum Technology Conference, March 26–28, 2019
Paper Number: IPTC-19569-MS
... Abstract Noise is the unwanted energy in a seismic trace opposed to the signals corresponding to reflected energy from the subsurface features. Since it can overlap with the main signals’ energy and conceal the geological information, noise attenuation is one of the most important steps...
Proceedings Papers

Paper presented at the International Petroleum Technology Conference, November 14–16, 2016
Paper Number: IPTC-18923-MS
...-body vibration ISO 374X series – Acoustics – Determination of sound power levels ISO 9613 – Acoustics – Attenuation of sound during propagation outdoors ISO 9614 – Acoustics – Determination of sound power levels of noise sources using sound intensity NFPA 72 - National Fire...
Proceedings Papers

Paper presented at the International Petroleum Technology Conference, November 14–16, 2016
Paper Number: IPTC-18933-MS
... hours, the S/N ratio of a raw shot gather from ACROSS is found to be comparable with a Vibroseis gather. Although low frequency and high amplitude noise is not negligible at near offset, the quality and repeatability of far offset data are excellent as the time shift calculated by cross correlation...
Proceedings Papers

Paper presented at the International Petroleum Technology Conference, December 6–9, 2015
Paper Number: IPTC-18453-MS
... of the 4D seismic compared to the previous processing between 2008 and 2011 ( Campbell et al., 2011 ): The 4D background noise is reduced, giving us a better stand-out of the 4D signal. Importantly, legacy data acquired before the advent of dedicated 4D acquisitions can also be significantly improved...
Proceedings Papers

Paper presented at the International Petroleum Technology Conference, December 6–9, 2015
Paper Number: IPTC-18331-MS
... and provide a comprehensive dataset for flow modelling in water wet reservoirs. flow in porous media density ratio experimental condition enhanced recovery Fluid Dynamics contact angle noise saturation distribution Upstream Oil & Gas co 2 saturation map capillary pressure wettability...
Proceedings Papers

Paper presented at the International Petroleum Technology Conference, December 6–9, 2015
Paper Number: IPTC-18518-MS
..., seismic data is often sparsely and irregularly sampled, leading to several challenges in processing of OBC seismic data offshore Abu Dhabi. Conventional linear noise attenuations are not effective with Scholte waves as they are usually aliased with typical source and receiver sampling intervals in 3D OBC...
Proceedings Papers

Paper presented at the International Petroleum Technology Conference, December 10–12, 2014
Paper Number: IPTC-18064-MS
... and Dowle, 2010) this no longer has to be the case and the recorded ghosts can be addressed in acqusition based solutions to give frequency rich broadband datasets that can almost reduce the wavelet to a near spike. As a by-product streamers can be towed deeper to reduce the effects of noise from sea state...
Proceedings Papers

Paper presented at the International Petroleum Technology Conference, December 10–12, 2014
Paper Number: IPTC-18065-MS
... Introduction Seismic data acquisition using ocean-bottom cable (OBC) methods, whilst capturing valuable azimuthal information, often presents challenges in the signal processing sequence for successful removal of unwanted noise and multiples-related energy. Herein, we present the results...

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