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2. 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. It is ...

3. Casing (borehole) - Wikipedia

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

   Casing Diameters of a Borehole Casing Diagram premium gas tight connections on a casing string. Casing is a large diameter pipe that is assembled and inserted into a recently drilled section of a borehole. Similar to the bones of a spine protecting the spinal cord, casing is set inside the drilled borehole to protect and support the wellstream.

4. Completion (oil and gas wells) - Wikipedia

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

   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 . These lag bolts apply a downward pressure on the tubing hanger to compress the sealing gaskets and to prevent the tubing from being hydrostatically or ...

5. Wellhead - Wikipedia

   en.wikipedia.org/wiki/Wellhead

   The primary purpose of a wellhead is to provide the suspension point and pressure seals for the casing strings that run from the bottom of the hole sections to the surface pressure control equipment. [1] While drilling the oil well, surface pressure control is provided by a blowout preventer (BOP).

6. Production packer - Wikipedia

   en.wikipedia.org/wiki/Production_packer

   A production packer [1] is a standard component of the completion hardware of oil or gas wells used to provide a seal between the outside of the production tubing and the inside of the casing, liner, or wellbore wall. Based on their primary use, packers can be divided into two main categories: production packers and service packers.

7. 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.

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   mail.aol.com

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9. Cementing equipment - Wikipedia

   en.wikipedia.org/wiki/Cementing_equipment

   A float collar is installed near the bottom of the casing string. Cement plugs land on it during the primary cementing operation, thus retaining inside the casing a small portion of the cement slurry that may have become contaminated as the top plug scrapes the inside of the casing. It is similar to a float shoe; often both are used for redundancy.