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  2. Completion (oil and gas wells) - Wikipedia

    en.wikipedia.org/wiki/Completion_(oil_and_gas_wells)

    Well completion is the process of making a well ready for production (or injection) after drilling operations. This principally involves preparing the bottom of the hole to the required specifications, running in the production tubing and its associated down hole tools as well as perforating and stimulating as required.

  3. Oil well - Wikipedia

    en.wikipedia.org/wiki/Oil_well

    After drilling and casing the well, it must be 'completed'. Completion is the process in which the well is prepared to produce oil or gas. In a cased-hole completion, small perforations are made in the portion of the casing across the production zone, to provide a path for the oil to flow from the surrounding rock into the production tubing. In ...

  4. Subsurface engineer - Wikipedia

    en.wikipedia.org/wiki/Subsurface_engineer

    Another factor in the selection of specific completion equipment is the production rates of the well. The typical job duties of a Subsurface engineer include managing the interface between the reservoir and the well, including perforations, sand control, artificial lift, downhole flow control, and downhole monitoring equipment.

  5. Workover - Wikipedia

    en.wikipedia.org/wiki/Workover

    Workover rig doing a snub job. In other circumstances, the reason for a workover may not be that the completion itself is in a bad condition, but that changing reservoir conditions make the former completion unsuitable. For example, a high productivity well may have been completed with 5½" tubing to allow high flow rates because a narrower ...

  6. Deepwater drilling - Wikipedia

    en.wikipedia.org/wiki/Deepwater_drilling

    Drilling in deep waters can be performed by two main types of mobile deepwater drilling rigs: semi-submersible drilling rigs and drillships.Drilling can also be performed from a fixed-position installation such as a fixed platform, or a floating platform, such as a spar platform, a tension-leg platform, or a semi-submersible production platform.

  7. 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.

  8. Well stimulation - Wikipedia

    en.wikipedia.org/wiki/Well_stimulation

    After initial completion, it is common to use minimal amounts of formic acid to clean up any mud and skin damage. In this situation, the process is loosely referred to as "well stimulation." Oftentimes, groups that oppose oil and gas production refer to the process as "acidization," which is actually the use of acids in high volume and high ...

  9. Offshore drilling - Wikipedia

    en.wikipedia.org/wiki/Offshore_drilling

    Holstein, an oil drilling platform at Green Canyon in the Gulf of Mexico, approximately 100 miles from land.. Offshore drilling is a mechanical process where a wellbore is drilled below the seabed.

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