The Full Opening Safety Valve (FOSv) is a ball-type safety valve used to stop the flow of fluid through the drill string as it is being pumped out of the well. The FOSv is a two-body, full opening safety valve that does not interfere with the operation of tools such as core barrels or measuring instruments. It is designed to be inserted into the top joint of the drill pipe or tubing string on the rig floor and close quickly in the event of a well kick.
The ball-type design makes the valve compact, easy to operate, and strong. The standard test pressure is 10,000 psi, and higher pressure ratings are also available.
Features:
1. Provide a variety of sizes and connection thread forms, compatible with a variety of buckle types.
2. The product uses a new technology and special process of dual-phase tungsten-titanium materials. It can maintain normal use under more than 10,000 pressure switch cycles in drilling conditions, and the product service life can reach 5,000 hours or more.
3. Ultra-low torque switch, opening torque ≤350N·m at a pressure of 35MPa; opening torque ≤1000N·m at a pressure of 60MPa.
After the finished valve ball and valve seat are placed in vacuum special equipment, a layer of low-torque material is compositely infiltrated to enhance the surface finish, enhance the self-lubrication and corrosion resistance of the surface (according to NACE MR0175, it can resist H2S corrosion above EE level), which can reduce the IBOP rotation torque by multiples, improve the wear resistance and corrosion resistance of the valve ball and valve seat surface, and greatly improve the product life.
4. It can meet different operating pressure requirements of 10000Psi and 15000Psi, and our company has the product capacity of 20000Psi.
5. As consumable parts, each valve is provided with an operating wrench and a thread protector, and a maintenance kit
Product parameters
Model | 2 3/8UPTBG | 2 7/8UPTBG | 3 1/2UPTBG | 4 1/2UPTBG |
Working Pressure | 70MPa | 70MPa | 70MPa | 70MPa |
O.D. | 121 mm | 130mm | 180 mm | 216 mm |
I.D. | 50.8 mm | 62 mm | 76.2 mm | 101.6 mm |
Length | 450 mm | 475mm | 550 mm | 750 mm |
Weight | 20 KG | 25KG | 75KG | 105KG |
No-load switching torque | <40N.m | <40N.m | <40N.m | <60N.m |
Switch torque @35MPa differential pressure | <450N.m | <500N.m | <600N.m | <900N.m |
Close torque at 35MPa full open status | <100N.m | <120N.m | <140N.m | <160N.m |
Number of switches | >5000次 | >5000次 | >5000次 | >5000次 |