US 12,326,070 B2
Apparatus and related methods for the cement breakup during abandonment operations
Craig Smith, Houston, TX (US); Stanley McCombie, Houston, TX (US); and Shaun Geerts, Joshua, TX (US)
Assigned to Owen Oil Tools LP, Houston, TX (US)
Appl. No. 18/282,771
Filed by Owen Oil Tools LP, Houston, TX (US)
PCT Filed Mar. 17, 2022, PCT No. PCT/US2022/020784
§ 371(c)(1), (2) Date Sep. 18, 2023,
PCT Pub. No. WO2022/197946, PCT Pub. Date Sep. 22, 2022.
Claims priority of provisional application 63/163,461, filed on Mar. 19, 2021.
Prior Publication US 2024/0167367 A1, May 23, 2024
Int. Cl. E21B 43/117 (2006.01); E21B 29/10 (2006.01)
CPC E21B 43/117 (2013.01) [E21B 29/10 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method of remediation in a subterranean formation having a borehole in which a first wellbore tubular is disposed at least partially within a second wellbore tubular, and wherein a cement body connects the first wellbore tubular to the second wellbore tubular, comprising:
positioning a well tool in a bore of the first wellbore tubular, the well tool having at least one shaped charge and at least one propellant body disposed inside a carrier;
detonating the shaped charge to generate a jet that forms an opening in the carrier, the first wellbore tubular, and a tunnel at least partially in the cement body, but does not form an opening in the second wellbore tubular;
igniting the propellant body to generate a gas at a volume and pressure selected to disintegrate the cement body; and
washing out the disintegrated cement body.