Patent ID: 6019173
Filing Date: 2000-02-01
Classification: E21B

Abstract:
A tubing exit whipstock for directing movement of well tools from a first wellbore to a second wellbore extending therefrom, the whipstock comprising:a generally cylindrical deflector body with a first passageway extending therein, the deflector body having a first end with a first tapered surface formed thereon to deflect the well tools into the second wellbore, and the deflector body having a second end with a first mechanical connector for attaching the deflector body to an orienting and locking device to releasably install the tubing exit whipstock at a selected downhole location in the first wellbore;a second longitudinal passageway extending from the first end of the deflector body at least partially therethrough;a generally cylindrical hollow core disposed within the second longitudinal passageway of the deflector body, the first longitudinal passageway extending through the hollow core, and a first fishing neck profile being formed within the first longitudinal passageway in the hollow core, the first fishing neck profile providing means for releasably coupling the hollow core with a first retrieval tool for removing the tubing exit whipstock from the selected downhole location in the first wellbore;a second mechanical connector for releasably coupling the hollow core within the second longitudinal passageway of the deflector body;a second fishing neck profile formed within the second longitudinal passageway of the deflector body;the second mechanical connector providing means for releasing the hollow core from the second longitudinal passageway when a predetermined amount of force is applied by the first retrieval tool to the first fishing neck profile formed within the first longitudinal passageway; andthe second fishing neck profile providing means for a second retrieval tool to engage the deflector body to remove the tubing exit whipstock from the selected downhole location.