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Set of tools type OT8 for cutting a rat hole in casing

APPLICATION:

 

The set is designed to mill a rat hole in casing and side tracking. A rig rotor or power swiwel is used as a gear. The whipstock is Non-retrievable. Ability to remove concave from the packer part is provided.

 

CONSTRUCTION:

 

A set consits of:

1.Whipstock with hydraulic packer is designed for deviation the cutting tools from axis of the main well bore during cutting a rat hole in casing. The whipstock construction allows when it's necessary to pull the whipstock out of hole. Due to double slips the packer is fixed as up and down.

2. Starting mill is designed to cut a rat hole in casing and side tracking.

3. Watermelon mill is designed to widen walls in cut rat hole.

4. Flexible sub is designed to connect a watermelon mill with assembly.

5. Retrieving hook is designed to pull the whipstock out of hole.

 

 

Features of the set:

- Setting on hydraulic packer, set with two mills;

- Orientation with GYRO or MWD;

-Hydraulic anchor construction provides fixation of whipstock as up and down. Non-retrievable, with ability to retrieve a whipstock concave.