Description
Full Opening Safety Valve FOSV for Oilfield Well Control
Full-Bore Drill Pipe Safety Valve Manufacturer and Supplier | SGPE Oil Machinery
SGPE Full Opening Safety Valve, also known as FOSV, is a full-bore drill string safety valve designed for oilfield drilling, tripping, workover, completion, and emergency well control operations.
Oilfield crews install the FOSV on drill pipe or tubing string to control flow from the well during critical drilling conditions. When a kick, overflow, abnormal pressure, backflow, or return flow appears, the crew can close the valve quickly with the matching operating wrench.
SGPE FOSV uses a ball-type full-opening structure. In the open position, the valve keeps a clear bore through the drill string. This design allows drilling fluid, core barrels, survey tools, logging tools, and other downhole oilfield tools to pass through smoothly.
With fast manual operation, strong body construction, reliable sealing, and easy rig floor handling, SGPE Full Opening Safety Valve helps improve drill string pressure control and reduce well control risk in petroleum drilling environments.
SGPE supplies standard FOSV models, custom oilfield connections, matching operating wrenches, and fast quotation support for drilling contractors, oilfield service companies, petroleum equipment distributors, and well control equipment buyers.
Product Overview
A Full Opening Safety Valve FOSV plays an important role in drill string pressure control. During oil well drilling, tripping, workover, completion, or emergency well control work, the rig crew can install the valve on the top of the drill pipe or tubing string and close it quickly when well conditions change.
The full-bore ball valve design keeps the internal passage open during normal operation. This structure reduces flow restriction, supports smooth downhole tool passage, and gives the crew a reliable shut-off solution when pressure control becomes urgent.
SGPE supplies FOSV products for oil drilling contractors, oilfield service companies, drilling tool suppliers, petroleum equipment importers, and well control equipment distributors. The valve fits oilfield applications that require clear bore access, fast shut-off, stable sealing, and dependable pressure control.
The standard test pressure reaches 10,000 psi. For high-pressure oil wells or special petroleum drilling projects, SGPE provides higher pressure options upon request according to project requirements.
Important Note: Test pressure and working pressure are different values. Please confirm the required working pressure, connection type, well condition, and safety requirement before order confirmation.
Key Features of SGPE Full Opening Safety Valve
Full-Bore Opening for Smooth Tool Passage
The full opening design creates a clear bore through the valve. Drilling fluid, core barrels, survey instruments, logging tools, and other downhole tools can move through the drill string with minimal restriction.
This feature makes SGPE FOSV suitable for oilfield operations that require both smooth tool passage and emergency shut-off capability.
Fast Ball-Type Shut-Off
The ball valve mechanism supports quick manual operation. When well conditions become unstable, the crew can rotate the ball with the operating wrench and close the flow path.
This direct operation helps the rig floor team respond faster during well control events.
Strong Dual-Body Structure
SGPE FOSV uses a dual-body structure for strength, maintenance convenience, and stable field performance. The valve body handles rig floor operation, high-pressure service, and harsh oilfield conditions.
Compact Design for Rig Floor Handling
The compact structure makes the valve easier to move, install, and operate on the rig floor. This design helps crews save time during emergency shut-off work and daily drilling safety management.
Reliable Sealing Performance
SGPE designs the valve for high-pressure oilfield service. The body structure and sealing design help maintain stable shut-off performance during drilling, tripping, workover, completion, and well control operations.
Multiple Oilfield Connection Options
SGPE offers common oilfield connections, including NC26, NC31, NC38, NC46, NC50, 2 7/8 EUE, 3 1/2 NU, 3 1/2 EUE, and XT39.
These connection options help customers match different drill pipe sizes, tubing strings, and drilling tool specifications. SGPE also supports custom connections for special oilfield projects.
Oilfield Applications
SGPE Full Opening Safety Valve serves a wide range of petroleum industry operations, including oil well drilling, drill string pressure control, tripping, rig floor emergency shut-off, workover, completion, high-pressure drilling, drilling fluid backflow control, downhole tool running, and daily drilling safety management.
During oilfield operations, this full-bore drill pipe safety valve helps control flow through drill pipe and tubing strings. It gives the rig floor team a practical tool for emergency drill string shut-off when pressure conditions change.
When crews pull the drill string from an oil well, return flow may appear through the drill string. In this situation, the FOSV helps the crew stop flow quickly and improve well control response.
How the Full Opening Safety Valve Works
When the valve stays open, the bore of the ball aligns with the valve body and creates a full opening through the drill string. Drilling fluid and oilfield tools can pass through the valve smoothly.
When return flow or pressure change occurs, the crew installs the FOSV on the top joint of drill pipe or tubing string. Then the crew uses the operating wrench to rotate the ball and close the flow path.
Because the operation is simple and direct, the FOSV works as a practical rig floor safety valve for emergency drill string flow control in petroleum drilling operations.
Technical Specifications
Full Opening Safety Valve Specification Table
| Model | O.D. mm | I.D. mm | Connection | Length mm |
|---|---|---|---|---|
| XS105-T44 | Φ105 | Φ44 | NC26 | 732 |
| XS110-T51 | Φ110 | Φ51 | NC31 | 726 |
| XS124-T62 | Φ124 | Φ62 | 2 7/8 EUE | 578 |
| XS127-T62 | Φ127 | Φ62 | 2 7/8 EUE | 578 |
| XS133-T57 | Φ133 | Φ57 | XT39 | 773 |
| XS133-T57 | Φ133 | Φ57 | XT39 | 1173 |
| XS134-T62 | Φ134 | Φ62 | NC38 | 800 |
| XS134-T62 | Φ134 | Φ60 | NC38 | 800 |
| XS146-T50.8 | Φ146 | Φ50.8 | NC31 | 832 |
| XS152-T76 | Φ152 | Φ76 | 3 1/2 NU | 640 |
| XS152-T76 | Φ152 | Φ76 | 3 1/2 EUE | 617 |
| XS178-T76 | Φ178 | Φ76 | 3 1/2 EUE | 675 |
| XS178-T76.2 | Φ178 | Φ76.2 | NC46 | 885 |
| XS190-T82.6 | Φ190 | Φ82.6 | NC50 | 895 |
Custom sizes, connections, lengths, and pressure ratings are available upon request.
Note: Final model selection should depend on drill pipe size, tubing size, connection type, bore requirement, working pressure, tool passage requirement, and oil well condition.
Quality Control and Inspection
SGPE focuses on practical oilfield performance, accurate machining, and stable sealing quality.
Before delivery, SGPE can arrange inspection according to each order requirement. The inspection process may cover dimensions, thread connections, pressure-related items, sealing performance, appearance, quantity, and packing details.
For special oilfield projects, customers can also confirm inspection documents, product photos, packing details, third-party inspection requirements, and other order-related details before delivery.
Through careful quality control and clear technical communication, SGPE helps oilfield buyers receive reliable Full Opening Safety Valve products that match project requirements and field operation conditions.
Why Choose SGPE FOSV?
SGPE Oil Machinery supplies oilfield drilling tools, drill string safety valves, and well control products for petroleum industry buyers.
When customers choose a Full Opening Safety Valve, SGPE helps them confirm a suitable model according to connection type, outside diameter, inner bore size, working pressure, tool passage requirement, and oil well condition. This support helps reduce model selection mistakes and procurement risk before order confirmation.
For different oilfield projects, SGPE supports custom sizes, special connections, different pressure requirements, bulk orders, and matching operating wrenches.
With practical technical communication and reliable supply capability, SGPE serves oil drilling contractors, oilfield service companies, petroleum equipment suppliers, drilling tool distributors, and oilfield project buyers.
Ordering Information
To order a Full Opening Safety Valve FOSV, please provide SGPE with your required connection type, valve outside diameter, inner bore size, working pressure, test pressure requirement, and order quantity.
You can also share the oil well condition, application type, special tool passage requirement, packing request, or inspection requirement. With these details, SGPE can recommend a suitable FOSV model and provide a clear quotation for your petroleum drilling project.
Related Oilfield Safety Valve Products
In addition to Full Opening Safety Valve FOSV, SGPE supplies a range of related oilfield drilling and well control products. These products include drill pipe safety valves, drill string safety valves, tubing safety valves, oilfield shut-off valves, high-pressure oilfield valves, rig floor safety valves, well control safety valves, and matching operating wrenches.
Together, these oilfield safety valve products help crews improve pressure control, enhance drilling safety, and respond faster during petroleum drilling, tripping, workover, completion, and emergency well control operations.
Request a Quote for Full Opening Safety Valve
Need a reliable Full Opening Safety Valve manufacturer, FOSV supplier, drill pipe safety valve supplier, drill string safety valve manufacturer, or oilfield well control valve supplier?
E-Mail:
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FAQ About Full Opening Safety Valve FOSV
1. What is a Full Opening Safety Valve FOSV in oilfield drilling?
A Full Opening Safety Valve, also called FOSV, is a drill string safety valve for oilfield well control. Crews install it on drill pipe or tubing string to stop flow during drilling, tripping, workover, completion, or emergency pressure control operations.
When the valve stays open, the full-bore passage allows drilling fluid and downhole tools to move through the drill string smoothly. When well conditions change, the crew can close the valve quickly with the operating wrench.
2. What does FOSV stand for in oilfield well control?
FOSV stands for Full Opening Safety Valve. In petroleum drilling, this term usually refers to a full-bore ball-type drill pipe safety valve for drill string shut-off and emergency flow control.
Oilfield crews often keep the FOSV and operating wrench on the rig floor, so they can react faster when pressure changes or return flow appears.
3. Why do drilling crews need a Full Opening Safety Valve?
Drilling crews need a Full Opening Safety Valve because it gives them a fast way to control drill string flow. During oil well drilling or tripping, formation pressure may push fluid back through the drill pipe or tubing string.
In this situation, the crew can install the FOSV on the top joint and close the flow path. This helps reduce well control risk, improve rig floor safety, and support safer petroleum drilling operations.
4. When should the rig crew use a drill pipe safety valve?
The rig crew should use a drill pipe safety valve when the well shows signs of kick, overflow, abnormal pressure, drill string backflow, or return flow. Crews also keep it ready during tripping, because flow may occur when they pull the drill string from the well.
A ready-to-use FOSV helps the crew respond quickly during oilfield emergency shut-off operations.
5. Why is the full-bore design important for FOSV?
The full-bore design keeps the internal passage clear when the valve stays open. Because of this structure, drilling fluid, core barrels, survey instruments, logging tools, and other oilfield downhole tools can pass through with less restriction.
This design helps buyers who need both smooth tool passage and reliable emergency shut-off in one drill string safety valve.
6. How does a ball-type Full Opening Safety Valve work?
A ball-type FOSV uses a rotating ball to control the flow path. When the bore of the ball aligns with the valve body, fluid and tools can pass through the valve. When the crew rotates the ball with the operating wrench, the ball closes the passage and stops flow through the drill string.
This simple structure helps the rig crew operate the valve quickly during well control events.
7. What is the standard test pressure of SGPE FOSV?
SGPE Full Opening Safety Valve has a standard test pressure of 10,000 psi. This test pressure suits many oilfield drilling, tripping, workover, completion, and emergency well control applications.
For high-pressure oil wells or special petroleum drilling projects, SGPE provides higher pressure options upon request. Before ordering, buyers should provide the required working pressure, well condition, connection type, and safety requirements.
8. Is test pressure the same as working pressure?
No. Test pressure and working pressure are not the same. Test pressure refers to the pressure used during inspection or testing. Working pressure refers to the pressure condition that the valve needs to handle during field operation.
To avoid model selection mistakes, buyers should confirm the required working pressure before ordering a Full Opening Safety Valve.
9. What oilfield connections does SGPE provide for FOSV?
SGPE provides common oilfield thread connections for Full Opening Safety Valve products, including NC26, NC31, NC38, NC46, NC50, 2 7/8 EUE, 3 1/2 NU, 3 1/2 EUE, and XT39.
These connection options help customers match different drill pipe sizes, tubing strings, drilling tools, and oilfield well control requirements. SGPE also supports customized connections for special projects.
10. How do I choose the right Full Opening Safety Valve model?
To choose the right FOSV model, buyers should check connection type, outside diameter, inside diameter, working pressure, test pressure requirement, tool passage needs, and oil well condition.
SGPE can help customers select a suitable full-bore drill pipe safety valve according to drill string size, tubing connection, bore requirement, pressure control needs, and oilfield application.
11. Can SGPE customize Full Opening Safety Valve products?
Yes. SGPE supports customized Full Opening Safety Valve products for different petroleum drilling projects. Customers can provide the required O.D., I.D., connection type, length, pressure requirement, quantity, and application details.
Custom FOSV options help drilling contractors, oilfield service companies, petroleum equipment suppliers, and drilling tool distributors meet special oilfield project requirements.
12. What information should I provide to get a quotation?
To get a fast and accurate quotation, please send SGPE the required connection type, outside diameter, inside diameter, working pressure, test pressure requirement, order quantity, and oilfield operation details.
You can also share the drill pipe size, tubing string size, well condition, tool passage requirement, inspection request, packing requirement, and delivery plan. With these details, SGPE can recommend a suitable FOSV model and prepare a clear offer.
Contact SGPE Oil Machinery
Need a reliable Full Opening Safety Valve manufacturer, FOSV supplier, drill pipe safety valve supplier, drill string safety valve supplier, or oilfield well control valve supplier?
SGPE Oil Machinery provides oilfield drilling tools, drill string safety valves, high-pressure oilfield valves, and well control products for petroleum drilling operations.
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