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2. Tubing hanger - Wikipedia

   en.wikipedia.org/wiki/Tubing_hanger

   A tubing hanger is a component used in the completion of oil and gas production wells. It is set in the tree or the wellhead and suspends the production tubing and/or casing . Sometimes it provides porting to allow the communication of hydraulic , electric and other downhole functions, as well as chemical injection.

3. Wellhead - Wikipedia

   en.wikipedia.org/wiki/Wellhead

   A wellhead is the component at the surface of an oil or gas well that provides the structural and pressure-containing ... tubing heads; tubing hangers; tubing head ...

4. Casing hanger - Wikipedia

   en.wikipedia.org/wiki/Casing_hanger

   Casing hangers must be designed to take the full weight of the casing, and provide a seal between the casing hanger and the spool. Casing Hangers may also be suspended within the wellhead by means of radial distortion of the wellhead bore e.g. the "Pos-Grip" method. This is installed to support the individual casing strings in the well.

5. Completion (oil and gas wells) - Wikipedia

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

   This component sits in the upper portion of the wellhead, within the tubing head flange and serves as the main support for the production tubing. The tubing hanger may be manufactured with rubber or polymer sealing rings to isolate the tubing from the annulus. The tubing hanger is secured within the tubing head flange with lag bolts.

6. Casing (borehole) - Wikipedia

   en.wikipedia.org/wiki/Casing_(borehole)

   Casing strings are supported by casing hangers that are set in the wellhead, which later will be topped with the Christmas tree. The lower members of the wellhead usually are installed on top of the first casing string after it has been cemented in place.

7. Glossary of oilfield jargon - Wikipedia

   en.wikipedia.org/wiki/Glossary_of_oilfield_jargon

   The instrument hanger is a downhole tool on which downhole gauges or instruments that are to be temporarily left in the wellbore are attached. The tubing hanger attaches to the topmost tubing joint in the wellhead to support the tubing string. Hitch: Rig employees refer to their work period as a 'hitch.'

8. Production tubing - Wikipedia

   en.wikipedia.org/wiki/Production_tubing

   Production tubing protects wellbore casing from wear, tear, corrosion, and deposition of by-products, such as sand / silt, paraffins, and asphaltenes. Along with other components that constitute the production string, it provides a continuous bore from the production zone to the wellhead through which oil and gas can be produced. It is usually ...

9. Workover - Wikipedia

   en.wikipedia.org/wiki/Workover

   The workover begins by killing the well then removing the wellhead and possibly the flow line, then installing a B.O.P. commonly known as a blowout preventer, then lifting the tubing hanger from the casing head, thus beginning to pull the completion out of the well.