Workover operations are different from pulling operations because the former have to alter the conditions of the reservoir to help improve the IP, to that end Workover operations are designed to open and / or closed arenas, perhaps increasing well diameter or depth, repair harmful areas as those areas that produce water and also includes fishing operations as opposed to pulling operations where the goal is to provide maintenance lifting equipment such as a cleaning paraffins to mechanical pumping equipment.
Rating Workover Equipment
The difference is that conventional ones have greater capacity and can work deep well workover. Trucking teams have a set of winch – CI engines mounted on a trailer. Trucking equipment are easier to move to another location.
Workover Equipment Parts
Its components are very similar to parts of a drilling team:
1. Lifting system.
2. Circulation system.
3. Rotation system.
4. Power source.
5. Well control system.
1. Lift System
Torre structure or substructure, traveling block, crown block, hook, cable, winch and accessories, lifts, wedges, key efforts, instrument control console, auxiliary winches, ramps, etc.
2. Circulation System
Tanks, fluid movement, main and auxiliary pumps, tube Vertical (stand pipe) hose, movement, or return flow line (Flow Line), Solids Control Equipment, mass settlement, degassing and gas separators.
3. Rotation System
Rotary table and accessories, pipe work (drill pipe), drill collar, heavy line (Hevi-wate), drill, kelly and accessories, swivel (swivel).
Prime movers, generators, power transmission.
Generally are internal combustion, the fuel being used Gas Oil. These motors can be coupled directly with the computer or charge coupled to generators to supply electrical power.
Change the mechanical power developed by the prime movers in electric current and are generally AC.
The power generated by the prime movers to be transmitted to the teams to provide movement. If the equipment is mechanical, this power is transmitted directly from the prime mover to the team. If the equipment is electrical, mechanical engine power is converted into electric power generators, then this electric power is transmitted to the electric motors attached to the equipment, making his move.
5. Well Control System
Preventors Valves (BOP’s), cancel or spherical, rams or pipe rams, blind rams or rams (Blind Rams), or Rams Rams Shear (Shear Rams), Unit pressure accumulator, choke manifold (kill manifold) manual or remote choke (super-choke), Line of killing (kill line) Line choke (choke line), relief valve (HCR), auxiliary valves (kelly cock, internal BOP).