... echoes are traveling more in the mud, the signal-to-noise ratio tend to improve with mud attenuation, although the absolute signal levels decrease with mud attenuation and may eventually reach the electronic noise level. When the TIE picking is possible, then the following outputs can be estimated...

..., exhibiting low attenuation, and provided robust results within a bond index ranging from free pipe to about 90% bonding. However, for lighter casing and heavier cement, the results were valid only up to 50% bond index. To overcome this limitation, the apparent attenuation of the waveforms through the casing...

... the acoustic energy propagating through the casing, the cement and the formation. The amplitude and the attenuation of the returned wave can be correlated with Bond Index (BI), due to the difference in acoustic impedance between casing and cement. Over years, different wireline technologies have been...

... Abstract Typical industry standard for evaluation of cement integrity at downhole conditions is through the use of acoustic measurements. These systems generate compressional acoustic waves which travel through wellbore fluid to impact the casing. Attenuation of these waves is used to derive...

... studies at the end of the paper. casing and cementing upstream oil & gas casing design cement evaluation thickness new transducer new generation operation cement and bond evaluation flexural attenuation liner objective rig time thierry evaluation transducer attenuation...

... attenuation Asrilhant , B. ; and Beyda , T. T. 2015 . Understanding Complexity and Uncertainty in E&P Mega Projects: The Need for a New Managerial Approach . Presented at the Offshore Technology Conference , Rio de Janeiro , 27-29, October . OTC-26140-MS . http://dx.doi.org...

... and are discussed in the paper. buildup production control phase fraction attenuation reservoir surveillance wall thickness offshore technology conference venturi resolution dp measurement diffuser fouling pressure measurement detection sensor flow metering erosion sensitivity fraction...

... ground motion input offshore technology conference upstream oil & gas prediction excitation analytical prediction reservoir characterization earthquake step wave centrifuge measurement ground motion radiation attenuation American Petroleum Institute (2011) , Geotechnical...

...-charged sediment: gas saturation (concentration) and excess pore pressure as well as their uncertainty. This data processing involves two steps: estimate the amount of seismic attenuation that a gas-bearing layer creates, and fit a wave attenuation model to the observed attenuation. We accomplish...

... 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...

... Abstract Seismic waves propagating in the earth are affected by attenuation. Attenuation is the progressive loss of energy with each cycle of the wave. The resulting seismic data has a frequency and time dependent loss of amplitude and a phase rotation of the wavelet. Traditionally attenuation...

..., if not impossible to remove completely in data processing. The current use of air-gun sub-arrays are mainly designed to attenuate bubble oscillation and are ineffective in reducing source-generated interference resulting from geological complexities located above the exploration objectives. Although end-fire...

... solution triangle evaluation attenuation composition concentration exhibition wlr energy level rate measurement reservoir surveillance upstream oil & gas fraction attenuation coefficient phasewatcher triangle OTC 19152 Evaluation of PhaseWatcher Multiphase Flow Meter (MPFM...

... communication across the completion and are sensitive to changes occurring in sand screens, gravel sand, perforations, and possibly reservoir. The part of the completion that has different impairment from its neighbors will carry tube waves with modified signatures (velocity, attenuation). We illustrate...

... Abstract For seismic reservoir monitoring, interference noise from other seismic operations can cause either delays in data acquisition due to timesharing, or additional efforts to attenuate the seismic interference (SI) during processing. Here we present a method which takes advantage...

... seismic data. johnston offshore technology conference acquisition flank reservoir characterization spatial upstream oil & gas requirement bouska attenuation caspian sea decimation testing ob survey ocean-bottom seismic survey acquisition design mud volcano crest receiver...

... eld conductivity csem data transmitter attenuation otc 17168 exploration electric eld upstream oil & gas resistivity frequency mt data reservoir characterization sea oor hoversten magnetic eld inversion geophysics offshore technology conference hydrocarbon exploration...

... area. seismic data reservoir property otc 16397 porosity information high resolution seismic study impedance poisson reservoir characterization processing sequence upstream oil & gas water saturation lankahuasa-1 well attenuation resolution westerngeco inversion...

... of problems, no single tool can attenuate all the multiples, but rather a sequence of tools: Surface Related Multiple Elimination (SRME), High Resolution Radon (HR Radon), and Diffracted Multiple Attenuation (DIMAT). This sequence can be easily extended to data with medium water depth. Introduction...

... Abstract Fibreoptic sensors are being increasingly used in wells with dry wellheads. However, for subsea wells some challenges remain to be overcome. These are e.g.: Low allowed attenuation Connector designs (e.g. tubing hanger connector for horizontal trees does not exist...