The Flowhead is the surface test tree as the primary device for controlling the well and allowing the introduction of wireline. The flow head is designed and manufactured according to API specification, including four valves-Master,Swab,Kill and flowline(Hydraulic actuator).
The standard valve configuration of the flowhead is four valves arranged in a cross shape. The bottom valve is a manual valve and is commonly known as the Master Valve and is the valve normally used to isolate the well bore from the surface process facilities. The top valve, which is also a manual valve, is known as the Swab valve and is used to allow the introduction of wireline tool strings into the well-bore. The two side valves are called the Flow-wing valve and the Kill-wing valve. The Flow-wing valve is normally a hydraulically actuated fail-safe close valve, which is activated by means of a control panel, or in an emergency situation, remotely by the ESD system. The kill-wing valve is normally a manual valve and is used to allow the introduction of kill fluids to the well. It is also used during pressure testing to allow the cement unit to pressure up the surface test equipment, across the flowhead.
Structure of Flowhead
| Item | Qty | Description |
| 1 | 1 | Lifting Sub, TOP: 5 3/4-4StubACME-2G Box Bottom: 5 3/4-4Stub ACME-2G Pin |
| 2 | 1 | Swab Valve, 3 1/16-15 M Gate Valve |
| 3 | 2 | Saver Sub, TOP:5 3/4-4Stub ACME-2G Box Bottom:5 3/4-4Stub ACME-2G pin |
| 4 | 1 | Kill wing valve, 3 1/16-15M Gate valve |
| 5 | 1 | Flow wing valve, 3 1/16-15M Hydraulic Gate valve Hydraulic failsafe |
| 6 | 1 | Check valve, 3 1/16-15M 3Fig 1502 Thread |
| 7 | 1 | Flange crossover 3 1/16-15M 3Fig 1502 Thread |
| 8 | 1 | Master valve, 3 1/16-15M gate valve |
| 9 | 1 | Swivel assembly, TOP:5 3/4-4Stub ACME-2G Box Bottom:5 3/4-4Stud ACME-2G pin |
| 10 | 1 | Crossover sub, TOP:5 3/4-4Stub ACME-2G Box Bottom: 4 1/2 IF pin |
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
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