Set of tools type OT5 for cutting a rat hole in casing
APPLICATION:
The set is designed to mill a rat hole in casing and sidetracking. A rig rotor or power swivel is used as a gear. The indentifying feature of the present set is ability to orientate the whipstock after hydraulic packer setting.
CONSTRUCTION:
A set consists 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 necessary, to pull the whipstock out of the hole.
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;
- The mechanical anchor provides max tightness of the whipstock to the casing wall;
- Ability of two stages setting: "Preliminary setting - orientation - final setting";
- Retrievable and Non-retrievable variants are available.