DN: 50, 65, 80 | PN: 14.0, 21.0, 35.0, 70.0 MPa

Application:    

Fountain wellhead equipment AF (AFK, ANK) is designed to control the flow of the working medium in the tubing string and annular space. It is used for tying in with the casing string, suspending the tubing (NKT), sealing fountain (gas-lift) wells, performing technological operations, and shutting off the flow of the working medium.

Injection wellhead equipment ANK and ANKE is intended to control the flow of the working medium in the injection line and annular space, to seal injection wells, and to isolate the space between them.

Suspension of NKT pipes in fountain equipment AF is carried out using a threaded tubing hanger, which allows pressure testing of the NKT string and prevents the release of petroleum products from the well.

In AFK (ANK, AFKE, ANKE) fountain equipment, suspension of NKT pipes is performed in a spool-type or flange-type tubing hanger installed on the Christmas tree.

A distinctive feature of AFKE and ANKE fountain equipment is the presence of a cable entry for connecting an electric submersible pump, which intensifies well operation, or for running a heating cable down the well.

Main Technical Parameters:

• Nominal bore of central passage, mm (in): 50 (2 1/16"), 65 (2 9/16"), 80 (3 1/16"), 100 (4 1/16")

• Nominal bore of side outlets, mm (in): 50 (2 1/16"), 65 (2 9/16"), 80 (3 1/16"), 100 (4 1/16")

• Nominal bore of tubing head, mm (in): 50 (2 1/16"), 65 (2 9/16")

• Working pressure, MPa (psi): 14 (2000), 21 (3000), 35 (5000), 70 (10000), 105 (15000)

• Well medium: Oil, gas, gas condensate with mechanical impurities up to 25 mg/l and formation water content up to 95% by volume

• Corrosion resistance options: Non-corrosive, corrosion-resistant grades K1, K2, K3 as per GOST 13846-89 or AA, BB, CC, DD-NL, ENL, FF-NL, NL as per API Spec 6A

• Technical requirements level for manufacturing (GOST) / Safety level (API): UT1, UT2, UT3, UT4 / PSL1, PSL2, PSL3, PSL3G, PSL4

• Technical requirements level for performance (GOST / API): UTR1, UTR2 / PR1, PR2

• Temperature classes (according to API): K, L, P, R, S, T, U.