За выстрел

1.The releasing overshot is the special external fishing tool used for fishing drilcollar ,drill pipe ,oil tube and other fishes in drilling and work over operation . 2.Releasing and Reversing Overshot ,a new type of fishing tool ,has many advantages owned by various overshot ,box tap and the like .Its distinguishing features are as follows :to unscrew and recover the stuck fish ;to release the fish down hole if necessary ;to circulate the washing fluid. 3. Short catch overshot This short catch overshot is specifically designed to engage the exposed potion of a fish (such as upset collar ,drill joint )too short to be engaged with conventional catch overshot .4.The sucker rod overshot is a fishing tool designed to catch the sucker rod broken in oil tube or casing .The sucker rod overshot can catch different sizes of sucker rod when equipped with different sizes of sucker rod when equipped with different sizes of slip or guide . 5.The releasing sucker rod overshot is a special tool used to catch sucker rods broken in tubings or casings.In case the fish is stuck seriously and can not be lifted out, the tool can be unscrewed safely from the fish .The tools are available in A type (with basket grapple)and B type (with spiral grapple). 6.The deforme catch overshot is an unreleased tool for fishing from outside of pipe string. 7.The slip overshot is an unreleased tool designed to externally engage a fish .It not only can engage every kinds of oil tube ,drill pipe ,weight rod ,long plumb but also can reverse the stuck pipe string by giving torque to the stuck pipe string .