The utility model relates to an oil tube anchor, including the center tube, cup jointed the piston dabber outside the center tube, offer the corresponding pressure hole of sending at center tube and piston spindle, the canning has piston cylinder and slip sleeve outside the piston dabber, is provided with the telescopic slips in slip sleeve. Piston spindle in slips both sides is provided with upper and lower cone, sits the offset nail fixing and has the piston through starting between piston cylinder and piston dabber, and the piston touches with last cone top, has offered the lockhole in cone down with piston dabber corresponding position department, be provided with the locking piece in the lockhole and be used for promoting the spring of locking piece, the piston dabber under near cone department offer the recess that is used for bearing the weight of the locking piece. This application can be solved water conservancy anchor anchoring power and influenced by its present position oil jacket pressure differential, but leads to storing up the tubular column contractile force deblocking recovery type packer scheduling problem of changing products livingly, and this application is when using, and it can the unblock to lift not, effective anchoring of tubular column during the assurance reservoir reformation.