Coupling adapters provide a means to suspend the tubing in conjunction with a special coupling. They provide a lower connection for the tubing head and an upper connection for the tree and are used with a tubing coupling, which suspends the tubing and accepts a back-pressure valve. It is used for high-pressure completions where the operator wants to manipulate tubing through a wraparound packoff or stripper and needs a back-pressure valve and/or a hydraulic supply inlet for downhole control lines. An ACME thread is machined into the adapter’s bottom inside diameter to be utilized in conjunction with the coupling to hang the tubing. Then it can be screwed onto the coupling. When a tree is trimmed for critical service, a coupling adapter with a coupling nut is available to prevent possible galling of threads between the adapter and coupling on makeup.
Tubing Suspension Adapter B-2-S
Tubing Coupling Adapter BO-2
Tubing Coupling Adapter BO-10
BO-2 Coupling
F e a t u r e s a n d B e n e f i t s
◆ Used with the BO-2 tubing coupling
◆ Adapter makes up to the tree.
◆ Entire assembly is installed by rotating it onto the coupling.
◆ Studded top connection only
BO-10 Coupling
F e a t u r e s a n d B e n e f i t s
◆ Used in conjunction with the BO-10 coupling
◆ Installs without rotation of the tree
◆ Studded top connection only
W H E N O R D E R I N G
t u b i n g h e a d a d a p t e r s , s p e c i f y t h e f o l l o w i n g :A. FMC Energy Systems Model B. Bottom Connection 1. Flanged, studded or clamp hub 2. Size 3. Working pressure C. Top Connection 1. Flanged, studded, male thread or female thread D. Single or Dual Completion E. Tubing Size(s) F. Tubing Thread(s) G. With/Without SCSSV Control Line Port(s) H. Service: Regular or H2S I. Material Class
Available to meet all appropriate API-6A requirements.
T
ubing Head
FMC Surface Wellhead TC-Series tubing hangers are available for any type of single- or multiple- string tubing completion, including those requiring packers, subsurface safety valves, gas-lift valves and electric submersible pumps. All FMC Surface Wellhead hangers can be run through the blowout preventers, allowing the well to be secured before the preventers are removed.
Most TC-Series tubing hangers accept a back-pressure valve, which seals the tubing bore. These BPV profiles may be of FMC Surface Wellhead design or they may be of another manufac- turer’s design, depending upon the customer’s requirements. Some hangers are ported for hydraulic control lines, downhole safety valves or other equipment as required by the customer.
S i n g l e - S t r i n g Tu b i n g H a n g e r s
Most TC-Series single-string hangers do not require aligning pins and are compatible with any TC- Series tubing head. Generally speaking, alignment pins will not be required unless there is a need to orient a hanger a particular way. An example of this might be when an additional line is being run with the tubing string and needs to be ported through a particular position in the tubing spool.
Description:Tubing hangers are installed in the top bowl of a tubing head. Tubing hangers both suspend tubing and provide a primary annulus seal between the tubing and production casing. Hangers are run through the blowout preventers and are landed in the top bowl of the tubing head. Tubing hangers are available for any type of tubing completion. Tubing hangers also act as a means to access and manipulate additional smaller tubing lines that are utilized downhole and extended to the surface on the outside of the tubing string or strings. Packoffs allow tubing string manipulation for setting packers or displacing fluid while sealing the annulus between the tubing and the production casing.
C O M P L E T I O N P R O D U C T S
T u b i n g H a n g e r s
TC-1A
The TC-1A is a threaded tubing hanger with an integral compression-type annulus seal that is actuated by string weight and or by lockdown screws. This hanger is also known as a threaded mandrel-type hanger and is considered one of the most basic and least expensive hangers in FMC Surface Wellhead’s TC product line.
TC-1W
The TC-1W is a split, wraparound packoff that allows tubing-string manipulation to displace fluid while maintaining complete control of annular pressure. Like all TC-Series packoffs, tubing string weight must be suspended from a tubing suspension adapter or coupling adapter. The TC-1W has a compression-type seal which is actuated by lockdown screws.
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F e a t u r e s a n d B e n e f i t s
◆ Used where downhole control lines or tubing manipulation are not required.
◆ Fits all TC-Series tubing heads.
◆ Interference-type annulus seals instead of compression-type seals for 5,000 psi working pressures or below.
◆ Back-pressure-valve preparation for “ISA” (unless otherwise specified).
TC-1A-EN TC-1A-ENS TC-1A-EMS
W/XEMS
TC-1A-EN
Threaded hanger with an extended neck with interference-type seals that provide a secondary annulus seal to isolate flange and ring gasket from well pressure and fluids.
◆ Accepts control lines and injection tubing.
◆ Either interference-type seal rings or compression-type packoff (actuated by lockdown screws).
◆ Accepts FMC back-pressure valve and tree test plug.
TC-1A-ENS
The TC-1A-ENS is a threaded mandrel-type tubing hanger with an extended neck. This hanger utilizes “S”-type seals on its neck that are used to seal inside the tubing head adapter that will be installed directly above the hanger upon completion of the well. Additionally, this hanger is provided with compression-type seals on the body that generally incorporate wire mesh-type non-extrusion devices above and below the seal. Lockdown screws are used.
F e a t u r e s a n d B e n e f i t s
◆ Extended-seal neck with interference-type seals isolates the tubing head/adapter connection from well pressure and provides for control-line porting if required.
◆ FMC Surface Wellhead “ISA” back-pressure valve preparation is standard.
◆ Interference-type annulus seals instead of compression-type for 5,000 psi working pressure or below.
◆ Has porting for SCSSV control lines, chemical injection, etc.