US 11,988,050 B2
Centralizer with opposing hollow spring structure
Lizheng Zhang, Houston, TX (US); and Wei Zhang, Houston, TX (US)
Assigned to Halliburton Energy Services, Inc., Houston, TX (US)
Filed by Halliburton Energy Services, Inc., Houston, TX (US)
Filed on Jul. 28, 2022, as Appl. No. 17/815,631.
Claims priority of provisional application 63/365,685, filed on Jun. 1, 2022.
Prior Publication US 2023/0392450 A1, Dec. 7, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. E21B 17/10 (2006.01); E21B 23/00 (2006.01)
CPC E21B 17/1042 (2013.01) [E21B 17/1028 (2013.01); E21B 17/1078 (2013.01); E21B 17/10 (2013.01); E21B 23/00 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A centralizer assembly for use in a wellbore, the centralizer assembly comprising:
an elongated, primary tubular member extending along a centralizer axis, the primary tubular member having a first end and a second end and a tubular wall extending between the first and second ends, the tubular wall having an inner surface and an outer surface; and
two or more elongated centralizer strip assemblies extending along at least a portion of the primary tubular member, wherein an outer portion of each centralizer strip assembly is adjacent the outer surface of the tubular wall and an inner portion of each centralizer strip assembly is adjacent the inner surface of the tubular wall so that the inner portion and outer portion of each centralizer strip assembly oppose one another on opposite sides of the tubular wall,
wherein each strip assembly is hollow in cross-section.