Informative Value and Interpretation Reliability of Wide Frequency Range Acoustic Noise Technique in Operating Horizontal Wells

2021 ◽  
Author(s):  
Rashid Kamilevich Yarullin ◽  
Rim Abdullovich Valiullin ◽  
Airat Rashidovich Yarullin ◽  
Dmitry Nikolaevich Mihailov ◽  
Valery Vasilyevich Shako ◽  
...  

Abstract This paper is devoted to the problem of informative value and interpretation reliability of wide frequency range acoustic noise technique in operating horizontal wells considering results of laboratory experiments conducted with wellbore mockups. The set of factors affecting the spectrum of acoustic noise recorded in wellbore were experimentally investigated and the necessity for calibrating of noise logging tools to provide results of acoustic measurements in the unified scale is also discussed.

1976 ◽  
Vol 19 (10) ◽  
pp. 1525-1526
Author(s):  
A. M. Fedorov ◽  
V. V. Krestovskii ◽  
V. S. Kiselev ◽  
S. A. Razumovskii ◽  
V. A. Shcheglov

2018 ◽  
Vol 60 (11) ◽  
pp. 1893-1900 ◽  
Author(s):  
V. A. Zhuravlev ◽  
V. I. Suslyaev ◽  
A. V. Zhuravlev ◽  
E. Yu. Korovin

2021 ◽  
Author(s):  
Vladimir Sergeevich Milyutin ◽  
Eugeniy Vasilevich Rogozhnikov ◽  
Kirill Petrovskiy ◽  
Dmitriy Pokamestov ◽  
Edgar Dmitriyev ◽  
...  

Abstract Frequency synchronization is a necessary operation for all wireless communication systems. Due to the wide frequency range defined for 5G NR systems, this procedure becomes critical. To ensure high transmission rates and the use of high-order modulation, up to 256 QAM for 5G communication systems, it is necessary to ensure high frequency synchronization accuracy. In this article, we have reviewed various approaches to implementing frequency synchronization and proposed, in our opinion, the most effective method for correcting the frequency shift of the signal.


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