Casing exit systems are used to sidetrack a wellbore for many reasons, including re-entry of an existing wellbore, drilling a bottomhole assembly that has become stuck and is too costly to fish out, severe formation or drilling problems, the need to change the direction of a wellbore, or the need to drill multiple exits from a single wellbore.

 

Big Rig one-mill casing exit system is retrievable and has two retrieval tool options to accommodate severe hole conditions. A complete system includes a whipstock combination, an orientation device, an anchoring device, and a milling tool. This system provides a quicker kickoff with a higher build rate in short-radius drilling applications. Decreased length of the whipstock and a milling assembly consisting of only one multi-section mill form a significantly shorter window exit bottomhole assembly (BHA). The reduced-length BHA is capable of passing through higher doglegs in the wellbore. Our whipstock system provides an effective means to exit casing and provide a window to run drilling BHA, liners, and completion equipment through.

 

Big Rig field-proven Inflatable Bottom Trip Packer is used to anchor a whipstock in the wellbore. It also comes with a lock and orientation sleeve on top to use with the Lock and Orientation Plug for deployment and orientation purpose. The packer is mechanically set at a desired location in a cased hole for sidetrack operations and the anchoring slips of the packer are also mechanically-activated. It doesn’t need preliminary trips to set a restriction plug. Orientation can be performed with measurement while drilling, universal bottomhole orientation, or gyro sensors into packer. The inflatable seal rings above the slips prevent debris and also stabilize the packer.