The flowhead consist of cross adaptor, swivel, body, lifting sub,plug valve and so on.
The flowhead is raising type with two wings which can connect with pipings, outlet is 1502 union. As per requirements, the tools can be transported from the top, the two wing control the fluid by low torque valves. The master valve control the surface equipment open and close. The thread of swivel is Left thread in order to avoid thread loose when in rotating.
The bottom connection thread is 4 1/2IF, two stage sealing in order to keep high tensile strength and high pressure sealing.
Technical Parameters:
Main Bore diameter:78mm
Working pressure:70Mpa
Max. Lifting capacity:1800kN
Connection: Bottom:4 1/2"If
Two wing:2" FIG1502 and 3" FIG1502
Working temperature:-29～121℃
Working condition:Mud, oil, gas(H2S)
Standard operating practices
- Ensure that the flowhead is rated in excess of the maximum anticipated shut-in wellhead pressure
- The flowhead is suitable for sour service if the well is of sour nature.
- Visually inspect the main body for signs of structural damage likely to affect integrity of assembly. Check threads and sealing surface for damage.
- Function the hydraulic actuator mechanism ensuring that it traves freeely the full travel without internal pressure. With the valve in the closed position measure the protrusion of the stem and note. Check the operation of ESD panel supplying the hydraulic fluid to the actuator.
SWIVEL ASSEMBLY
The tubing swivel is located beneath the Surface Test Tree and is designed to allow test string rotation while the Surface test Tree remains stationary above it.It is necessary to rotate the string during the operation of some downhole tools.e.g.setting a retrievable packer.Mechanically unlatching from the sub sea tree,etc.
Equipment Specification
Service sour
Pressure Rating 10,000 psig
Maximum temperature rating 250deg F
Minimum temperature rating -20deg F
Top Connection 5-3/4” – 4 STUB ACME-2G-RH BOX
Bottom Connection 5-3/4” – 4 STUB ACME-2G-RH PIN
CROSS-OVER
5-3/4” – 4 STUB ACME-2G-RH BOX * 411 1 Ea
5-3/4” – 4 STUB ACME-2G-RH BOX *3-1/2 EUE PIN 1 Ea
Lifting Sub 1 Ea
Other WST equipment:
| CHOKE MANIFOLD |
| Sour service: NACE MR0175 |
| Operating -20 to 250 deg F |
| Choke manifold shall have double block gate valves and bleed, to allow choke changes/replacements without interrupting the flow and for protection of the personnel and environment. |
| Chemical injection point across the choke for hydrate inhibition/mitigation. |
| 128/64ths " adjustable choke |
| 1 active + 1 backup |
| Full set of fixed beans in 2/64” increments from 8/64” to 48/64” and 4/64” increments from 48/64” to 128/64”. |
| 2 Bleed off ports upstream and downstream of choke bodies. |
| |
| SURFACE SAFETY VALVE |
| Sour service: NACE MR0175 |
| Operating -20 to 250 deg F |
| Hydraulically fail safe gate valve, tied into ESD system. |
| |
| DATA HEADER (Required 2ea) |
| 3" Fig 1502 10K Psi |
| Sour service: NACE MR0175 |
| Operating Temp: -20 to 250 deg F |
| Minimum number of ports. Compliant with double barrier philosophy : 6 |
| |
| OIL MANIFOLD |
| 3"602 connection (Oil) and 4"602 connection (Gas): API SPEC 6A, ASME B16.34 (Valves associated with diverter manifolds) |
| Sour service: NACE MR0175 |
| Minimum 1440 psi rating |
| Temperature rating: 32 to 212 deg F |
| Outlets to burner boom. Valves to be interlocked or similarly mechanically controlled when ball valves supplied. |
| 5 way Manifold |
| GAS MANIFOLD |
| 4"602 connection (Gas): API SPEC 6A, ASME B16.34 (Valves associated with diverter manifolds) |
| Sour service: NACE MR0175 |
| Minimum 1440 psi rating |
| Temperature rating: 32 to 212 deg F |
| Outlets to burner boom. Valves to be interlocked or similarly mechanically controlled when ball valves supplied. |
| 3 way Manifold |
| HIGH PRESSURE PIPING |
| Minimum nominal size: 3" Fig 1502 connection |
| Minimum working pressure: 10K psi |
| Sour service: NACE MR0175 |
| Pipework with integral or welded hammer unions |
| Sufficient quantity / length of high pressure of 50mtr piping and 40pc 90 deg elbow to connect upstream package |
| LOW PRESSURE PIPING |
| Sufficient quantity / length of low pressure piping and elbow to connect downstream package, including vent and relieve lines |
| Sour service: NACE MR0175 |
| Pipework with integral or welded hammer unions |
| Well test pipework will be suitably restrained to anchor points corresponding to the maximum pressure to which it is tested |
About JC Wellhead
Jingcheng Petroleum Machinery Manufacturing Co.,Ltd was established in 2008, we are specialized in design and manufacturing of the oilfield wellhead equipment. We - YCJC are a registered supplier for CNPC, GWDC, CCDC in China.
YCJC also engaged in abroad marketing, through these years of efforts, our wellhead equipment is exported to many countries, such as Thailand, UAE, Iran, Brazil, Argentina, USA etc. and enjoyed good reputation from the customers.
The wellhead equipment we manufacture and supply include casing head, tubing head, casing spool, tubing spool, Gate valve, Choke valve, Check valve, X-mas tree, VR plug, Tubing hanger, casing hanger, Running tool, Wear bushing, spacer spool, flange adapter, union flange, Hammer union, Elbow, swivel joint, block cross, Block Tee, companion flange, instrument flange, weldneck flange, FC gate, FC seat, FC stem, API Clamp, API Clamp Hub
