Shock-wave generation for wireline

A shock-wave generation sub comprising:

• an uphole end and a downhole end, the downhole end of the shock-wave generation sub attachable to an uphole end of a perforation gun subassembly of a wireline perforation assembly, wherein the wireline perforation assembly is configured to be disposed in a wellbore and the perforation gun subassembly comprises one or more shaped explosive perforation charges configured to, when detonated, form a perforation in a wall of the wellbore;
• a housing defining an interior volume;
• and
• a length of detonation cord within the interior volume, wherein the housing at least partially isolates the length of detonation cord from the perforation gun subassembly and wherein the shock-wave generation sub is configured such that a detonation of the detonating cord within the interior volume generates shock waves and does not cause detonation of any of the one or more shaped explosive perforation charges of the perforation gun subassembly.

A method comprising:

• detonating one or more shaped explosive perforation charges of a wireline perforation assembly positioned within a wellbore via a wireline conveyance, thereby forming a perforation in a wall of the wellbore, the wireline perforation assembly comprising a first shock-wave generation subassembly and a second shock-wave generation subassembly, each of the first shock-wave generation subassembly and the second shock-wave generation subassembly comprising a housing at least partially isolating a length of detonation cord within its respective interior volume;
• detonating, as a first instance of detonation and in response to a first indication that the wireline perforation assembly is in a stuck position in the wellbore, a length of detonation cord within an interior volume of the first shock-wave generation subassembly, thereby generating shock waves without detonating any shaped explosive perforation charges of the wireline perforation assembly;
• detonating, as a second instance of detonation of detonation cord and in response to a second indication that the wireline perforation assembly is in the stuck position in the wellbore, a length of detonation cord within an interior volume of the second shock-wave generation subassembly, thereby generating further shock waves without detonating any shaped explosive perforation charges of the wireline perforation assembly.