DEVICE FOR EQUIPMENT RETRIEVAL FROM SIDE WELLBORE OF MULTIHOLE WELL Russian patent published in 2012 - IPC E21B31/14 

FIELD: gas and oil production.

SUBSTANCE: invention can be applied in retrieval of equipment or pipe string elements from side wellbores of multihole well. Device for retrieval of equipment from side wellbores of multihole well includes case with side port made at one side of the case above arrester with passage duct, and collet with grip lugs, mounted in the case below arrester and capable of limited axial movement up to the arrester. Arrester is fixated to the case walls. Case is equipped with ball support, and connecting thread is made in adapter connected rigidly to bushing with spherical inner surface where ball support is installed with possible limited radial leaning.

EFFECT: reliable simple construction of device allows for application in side wellbores of multihole wells without additional equipment, thus reducing manufacturing and operation costs.

2 dwg