وصف
Cementing Circulating Head 7" BTC Pin x 2" Fig 1502 Union
The Circulating head is an important connector between the casing and the wellhead device, used for connecting between the casing layers, between the casing and the blowout preventer, and for supporting and connecting with the oil (gas) wellhead after completion.
Circulating swage's bottom end is connected to the surface casing through threads, and circulating swedge's upper end is connected to the wellhead device or blowout preventer through flanges or clamps. Support the weight of each layer of casing through a hanger, withstand the weight of the blowout preventer, form a pressure seal between the inner and outer casings, provide an outlet for releasing pressure between the casing columns, and perform special operations in drilling and production processes.
