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  2. Workover - Wikipedia

    en.wikipedia.org/wiki/Workover

    A workover rig. The term workover is used to refer to any kind of oil well intervention involving invasive techniques, such as wireline, coiled tubing or snubbing.More specifically, a workover refers to the expensive process of pulling and replacing completion or production hardware in order to extend the life of the well.

  3. Unit Rig - Wikipedia

    en.wikipedia.org/wiki/Unit_Rig

    Unit Rig launched industry's first AC drive 150T (MT3300AC) truck with GE Invertex drive followed by 240T AC (MT4400AC) truck. Both trucks wrote new chapters in TCO - Total Cost of Ownership which is an indicator of life time expenses made by a client on parts, fuel and Capex. Unit Rig' truck design philosophy probably prompted later day's ...

  4. Oil well - Wikipedia

    en.wikipedia.org/wiki/Oil_well

    Such remedial work can be performed using workover rigs – also known as pulling units, completion rigs or "service rigs" – to pull and replace tubing, or by the use of well intervention techniques utilizing coiled tubing. Depending on the type of lift system and wellhead a rod rig or flushby can be used to change a pump without pulling the ...

  5. Snubbing - Wikipedia

    en.wikipedia.org/wiki/Snubbing

    225k Snubbing Unit 340k units are designed to perform live and dead well interventions on both land & offshore. Snubbing is a type of heavy well intervention performed on oil and gas wells. It involves running the BHA on a pipe string using a hydraulic workover rig.

  6. Tractor unit - Wikipedia

    en.wikipedia.org/wiki/Tractor_unit

    Peterbilt 386 sleeper-cab–style commercial 6×4 tractor unit. A tractor unit, also known as a truck unit, lorry unit, power unit, prime mover, ten-wheeler, semi-tractor, semi-truck, semi-lorry, tractor cab, truck cab, lorry cab, big rig tractor, big rig truck or big rig lorry or simply a tractor, truck, lorry, semi, big rig or rig, is a characteristically heavy-duty towing engine that ...

  7. Service Rigs - Wikipedia

    en.wikipedia.org/wiki/Service_Rigs

    The rigs usually travel in a convoy, because all of the component rigs are needed for proper oil well servicing. The crew use the equipment on the rigs to provide a variety of services, including completions, work-overs, abandonment's, well maintenance, high-pressure and critical sour-well work and re-entry preparation.

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