XÍ NGHIỆP ĐỊA VẬT LÝ GIẾNG KHOAN - BẠN ĐỒNG HÀNH CỦA CÁC NHÀ DẦU KHÍ
FUL-FLO® Hydraulic Circulating Valve
The FUL-FLO® hydraulic circulating valve serves as a bypass around the packer or as a circulating valve to circulate a well after testing.When run below a closed valve, the tool serves as a bypas s around the packer and helps relieve pressure buildup below the closed valve when it is stung into a production packer.When run above a closed valve, the tool can be used as a circulating valve when the workstring is picked up.
Features and Benefits
• Permits passage of wireline tools through its full-opening bore
• Requires no pipe rotation to operate
Bypass ports close when weight is set down and reopen when weight is lifted.A hydraulic metering system provides a 2 to 3-minute delay in closing after weight is applied. This delay allows either the RTTS packer to be set or the test string to be stung into a permanent packer before the bypass ports close. The ports reopen without a time delay.During stimulation work, the latching piston adds a downward force on the circulating sleeve to help keep the valve closed.Operation of the valve is the same whether it is used as a circulating valve or as a bypass. No torque is required. Weight is applied to close the tool, and the workstring is picked up to reopen it.
FUL-FLO Hydraulic Circulating Valve
Meets NACE-0175 > 175°F (79°C) standards for H2S service
*Service temperature up to 450°F (dressed with 600 series o-rings and PEEK™ back-up seals)
**The values of tensile, burst, and collapse strength are calculated with new tool conditions, Lame’s formula for burst and collapse strength, and stress
area calculations for tensile strength.
***Pressure rating is defined as differential pressure at the tool. (Differential pressure is the difference in pressure between the casing annulus tool ID.)
These ratings are guidelines only. For more information, contact your local Halliburton representative.
PEEK is a trademark of ICI Americas, Inc. Poly-Ether-Ether-Ketone.