[12] Patent
[11] Patent No.:GC0013764  
[45] Date of Publishing the Grant of the Patent: 9/Sep /2025                102/2025  		 Number of the Decision to Grant the Patent:2025/203290
Date of the Decision to Grant the Patent:04/Aug/2025

[21] Application No.:GC 2019-38233

[22] Filing Date:3/9/2019

[30] Priority:

[33] State [32] Priority date [31] Priority No.
US
11/10/2018
 62/744,396

[72] Inventors:1- Jie YangŲŒ2- Lilong Li

[73] Owner: Halliburton Energy Services, Inc., 3000 N. Sam Houston Parkway E., Texas, Houston, USA

[74] Agent: SMAS Intellectual Property WLL

  

 

   

[51]IPC:
Int. Cl.: E21B 49/00; G01R 33/38; G01V 3/32 (2006.01)

[56] Cited Documents:

-US 20170082772 A1 (XIAO; LIZHI) 23 March 2017
-US 20040124837 A1 (Prammer, Manfred G.) 01 July 2004
-US 20020163335 A1 (Prammer, Manfred G.) 07 November 2002
-US 6825659 B2 (Prammer; Manfred G.) 30 November 2004
-US 6583621 B2 (Prammer; Manfred G.) 24 June 2003
-US 6362619 B1 (Prammer; Manfred G.) 26 March 2002  
Examiner: Eng. Fahad M. AlBaker

[54] RINGING REDUCTION IN A NUCLEAR MAGNETIC RESONANCE LOGGING TOOL
[57] Abstract: A nuclear magnetic resonance (NMR) logging tool configured to be positioned in a borehole created in a subsurface formation. The NMR logging tool includes a magnet to induce a magnetic field in the subsurface formation, a transmission line, and a first shield positioned between the magnet and the transmission line. The NMR logging tool includes a transmitter and an antenna coupled to the transmitter by the transmission line. The antenna is to transmit a radio frequency (RF) magnetic field into the subsurface formation in response to the transmitter supplying power by the transmission line.
No. of claims: 19     No. of figures: 8


 

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