US 12,215,562 B2
Seal element with profiled surface for a downhole tool in a wellbore
Shobeir Pirayeh Gar, Carrollton, TX (US); Xiaoguang Allan Zhong, Singapore (SG); and Michael Linley Fripp, Singapore (SG)
Assigned to Halliburton Energy Services, Inc., Houston, TX (US)
Filed by Halliburton Energy Services, Inc., Houston, TX (US)
Filed on Oct. 25, 2023, as Appl. No. 18/494,047.
Claims priority of provisional application 63/502,692, filed on May 17, 2023.
Prior Publication US 2024/0384620 A1, Nov. 21, 2024
Int. Cl. E21B 33/12 (2006.01)
CPC E21B 33/1208 (2013.01) [E21B 33/1216 (2013.01)] 20 Claims
OG exemplary drawing
 
12. A method for forming a seal element in a sleeve for operation in a wellbore, the method comprising:
molding rubber into a seal gland of the sleeve, wherein the rubber is to extend beyond a side of the sleeve where the seal gland is located; and
machining a surface of the rubber to profile the seal element with a profiled surface having an asymmetric shape that comprises a back angle that is an acute angle defined by the profiled surface that extends in a straight line to reach a bottom surface of the gland to form a void within the gland, wherein a volume of the void divided by a volume of the gland defines a void index between 0.25 and 0.45, the void index having a variance of +/−10%.