Wellhead _ Enggcyclopedia
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Enggcyclopedia > Blog > Process Design > Crude Oil Extraction > Wellhead Wellhead What is wellhead? Wellhead consists of components of an oil well which are located above the surface. Wellhead acts as an interface between the casing strings in oil wellbore and surface facilities. Well head provides suspending point for the casing strings running through the wellbore and also acts to contain the pressure inside the casing strings . Wellhead Functions 1. Wellheads are also responsible for containing the pressure within each of the casing strings . During oil well drilling, casing is installed and cemented to the wellbore for containing the pressure and wellbore wall in place. Casing also serves to avoid mixing of fluids from different formations through which the wellbore runs. 2. A wellhead provides means for suspension of casing strings running down the wellbore. 3. A Blow Out Preventer (BOP) acts to cope up with erratic fluctuations of pressure and flow from reservoir. Wellhead serves as attachment point for the Blowout Preventers. 4. Wellhead provides means for attaching a christmas tree for production operations. Christmas tree is equipped with set of isolation and choke valves and serves for pressure control. 5. Tubings are passed through the casing from surface to the oil reservoir to facilitate the transfer of fluids to the surface. The tubings responsible for oil production are called production tubings. A wellhead also provides a point for suspension of tubings. 6. Wellhead can be used for pressure monitoring for casings and annuli between different casing and tubing strings. E-Learning for Drill Crew CATI/II drilling inspection training as API recommends Book now Go Viral with UP
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Enggcyclopedia > Blog > Process Design > Crude Oil Extraction > Wellhead
Wellhead
What is wellhead?
Wellhead consists of components of an oil well which are located above the surface. Wellhead acts as aninterface between the casing strings in oil wellbore and surface facilities. Well head provides suspending pointfor the casing strings running through the wellbore and also acts to contain the pressure inside the casingstrings.
Wellhead Functions
1. Wellheads are also responsible for containing the pressure within each of the casing strings. During oilwell drilling, casing is installed and cemented to the wellbore for containing the pressure and wellborewall in place. Casing also serves to avoid mixing of fluids from different formations through which thewellbore runs.
2. A wellhead provides means for suspension of casing strings running down the wellbore.3. A Blow Out Preventer (BOP) acts to cope up with erratic fluctuations of pressure and flow from
reservoir. Wellhead serves as attachment point for the Blowout Preventers.4. Wellhead provides means for attaching a christmas tree for production operations. Christmas tree is
equipped with set of isolation and choke valves and serves for pressure control.5. Tubings are passed through the casing from surface to the oil reservoir to facilitate the transfer of fluids
to the surface. The tubings responsible for oil production are called production tubings. A wellhead alsoprovides a point for suspension of tubings.
6. Wellhead can be used for pressure monitoring for casings and annuli between different casing and tubingstrings.
E-Learning for Drill CrewCATI/II drilling inspection training as API recommends Book now
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7. Sometimes multiple casings are used in the same wellbore. These casings contain different well fluids. Awellhead serves to keep these casings separated from each other to avoid mixing of fluids.
8. Wellheads also provide access for pumping from annuli between the different casing/tubing strings.9. Wellhead provides reliable access to well with possibility to attach a well pump.
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