The Pros And Cons Of Fishing

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In oilfield terms, fishing means: “Eleminating or removing downhole problems that inhibit further progress” Downhole problems can be described as lost of equipment, junk, parted drill strings etc. The lost equipment itself is normally called “a fish” and the events leading up to having a fish in the hole is usually accidental, unwanted and unexpected. There are, however, exceptions where fishing operations may be part of a drilling program (planned sidetracks). Fishing of oilfied equipment in wells can be compared to fly fishing for salmon, If you don’t know what is going on beloh the surface, you are not going to catch anything. Fishing is one of the last “art forms” where creativity, 3D visualization and innovative thinking are important factors for success. Although fishing is slowly turning into engineering and procedures, fishing operations will remain unpredictable and full of surprises. Oil and gas wells are getting increasingly both sophisticated and complicated.…show more content…
Bit weight, if you use the string weight to push the bit or a mill this is deducted from the total measured weight. Torque & Drag Torque as measured on the surface by the drillers Torque Indicator is really the sum of all forcers acting on the rotational movement of the string. When the torque measurement is read on the surface, it includes a number of factors : The frictional torque acting on the relationship between the drill string roughness and wellbore wall “smoothness”. The effect of inclination of the wellbore. If you have a timber log hanging from a rope, it is relatively easy to rotate, even if it’s weight is several thousands pounds. Now if the same log is lying flat on the

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