English
A seal assembly for use in a wellbore tool, it acts as a flow restrictor protecting a lower end of the seal assembly from high pressure and/or high volume flow.
Brand:
JST SealsItem NO.:
ESYPayment:
T/TProduct Origin:
ChinaShipping Port:
GuangzhouOrder(MOQ):
50
Seal stack for well tools sliding sleeve
In many well completion operations, it frequently occurs that it is desirable, either during the completion, production, or workover stages of the life of the well, to have fluid communication between the annular area between the interior of the casing and the exterior of the production tubing or workstring with the interior of such production tubing.
A seal assembly for use in a wellbore tool, it acts as a flow restrictor protecting a lower end of the seal assembly from high pressure and/or high volume flow.
In such well tools, a series of upper and lower primary seals are placed in the housing for dynamic sealing engagement relative to the exterior of a sleeve which passes across the seals during opening and closing of the port element. As with the seal stack, such primary sealing means also represent an area of possible loss of sealing integrity.
Application：
1. FLS and FLS-R Gate Valves
2. Well tools like sliding sleeves that can be used for infinitely adjustable switches
2. Bi-directional pressure bearing piston or rod seal
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Features:
1. High temperature and high pressure resistance 2. Bidirectional alternating pressure bearing 3. Reciprocating seal 4. High reliability - verification of over 2400 reciprocating tests 5. JST patented seal design |
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Technical Parameter |
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Temperature range |
Pressure |
Medium |
Material |
Compliant with standard |
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4℃~177℃ |
≤15000psi |
water, oil, natural gas, fracturing fluid, H2S |
PC005/PC002/PC007/PEEK/HNBR/FKM |
API 19LH V1 standard |
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Existing Standard Grooves:
G=4.76 L=45.5
G=6.35 L=38(50.8)
G=7.94 L=42.6
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Categories
V-Packings are used in various Oilfield Downhole equipment such as various Valves etc. V-Packings are extremely suitable for usage in medium to heavy duty applications. Vee Packings accept low and high pressure while operating in the most extreme conditions and also if there exists any misalignment between the sealing gaps.
The V Stack seal assembly is comprising a top adapter or anti-extrusion ring (1), Vee Rings (2) and a bottom adapter (3). In the assembly the energizing axial force is transferred between the individual packing rings so that each ring is pressed into positive contact with the mating hardware surface. Special material grades are available for a large variety of working conditions. The chevron seal stack material could be PEEK, modified PTFE and spring.
JST's Packer elements are flexible elastomeric components that are used to seal between the outside diameter of the production tubing and the casing, liner or wellbore.
The bonded seal is used in work-over and sand control operations. With the bonding of elastomer to a steel core, this serve to prevent excessive rubber compression under loading.
Wellhead secondary pack off seal is used to seal the hanger to the wellhead.
SPGO is a low friction piston seal consisting of PTFE+Bronze seal ring and rubber o-ring used for two-way piston seal of Hydraulic cylinder, to seal in fluid, thus preventing the flow of fluid across the piston, allowing pressure to build up on one side of the piston.
O ring is a type of seals with solid rubber material or PTFE and an O-shaped cross section.
Dovetail groove is used to put the O-ring or elastomer dovetail seal during installation. This groove is not common because it is more expensive to machine, but this dovetail groove can avoid seal extrusion out.
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