Patent ID: 9670734
Date: 2017-06-06
CPC Classifications: E21B

Claim:
1. A method of removing a section of a wellbore, comprising: conveying a casing cutting tool into the wellbore on a conveyance, the wellbore being lined with at least one casing string having a lower casing collar and an upper casing collar being separated by a predetermined axial distance along the wellbore and secured in the wellbore by cement, and the casing cutting tool including a jetting tool having one or more jetting nozzles arranged thereon; stroking the casing cutting tool with the conveyance over the predetermined axial length while ejecting a fluid from the one or more jetting nozzles arranged thereon, dislodging one or more slats from the wellbore and thereby exposing formation rock along at least a portion of the predetermined axial length.