Knowing Subsurface Safety Valve- API14A

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PART: • Knowing Subsurface Safety Valves • API 14A • Form 175-454400 Charlie Chong/ Fion Zhang
Part 1: Knowing Subsurface Safety Valve (SSSV) A subsurface safety valve is essentially a shutdown valve installed at the upper wellbore for emergency shutdown to protect the production tubing and wellhead in case of overpressure. Purpose of a subsurface safety valve (SSSV) is to avoid the ultimate disaster which can result in release of reservoir fluids to the surroundings. This makes SSSV a very important component of a well completion. To protect the surface facilities in case of emergency, the wellbore is isolated from surface facilities using a subsurface safety valve (SSSV). Hence such a safety valve needs to be fail safe in order to isolate well bore in any kind of system failure or damage to surface production, control and safety facilities. Charlie Chong/ Fion Zhang http://www.enggcyclopedia.com/2012/02/subsurface-safety-valve-sssv/
Page 1 and 2: Knowing Subsurface Safety Valve Equ
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Page 5 and 6: The Magical Subsurface Safety Valve
Page 7 and 8: Subsurface Safety Valve (SSSV) Down
Page 9: Well Completion Charlie Chong/ Fion
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Page 15 and 16: Subsurface safety systems provide e
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Page 19 and 20: This analysis should consider these
Page 21 and 22: The need for a new and more reliabl
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Page 25 and 26: The International Organization for
Page 27 and 28: Early subsurface safety valves were
Page 29 and 30: Typical subsurfacecontrolled safety
Page 32: A new type of valve became necessar
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Page 43: The flapper-valve design, pioneered
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After actuation - After an incident
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Flapper-type safety valves today in
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One such design is shown in the Fig
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Halliburton Subsurface Safety Valve
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Conveyance systems - There are two
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■ Slickline-conveyed, slickline-r
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Slick Line retrievable Surface Cont
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Charlie Chong/ Fion Zhang https://w
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Slickline- Retrievable SCSSV https:
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Surface Controlled SSV- Flapper Typ
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Weatherford Slickline Retrievable S
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A ScaleGard treatment imparts the s
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The safety-valve control fluid must
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Heavy-wall Flow Couplings Turbulent
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Bruce field Charlie Chong/ Fion Zha
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Optimizing Flow Safely A systems ap
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TRM-4PE safety-valve assembly used
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For higher gas flow-rate conditions
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Gas Slam Testing * The specified AP
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Valve-System Considerations Since t
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Advances in materials science and c
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These more extreme applications req
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Similarly, designing valves for HPH
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Setting Valves at Great Depth The d
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Rod-piston SCSSV. In this valve des
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Higher well pressures and temperatu
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Nansen field, Gulf of Mexico. The N
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TRC-DH safety-valve assembly used i
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Nansen field wellbore diagram. The
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Work on these subsea wells requires
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The need for compact equipment and
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Charlie Chong/ Fion Zhang https://w
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Special Notes API publications nece
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API Specification 14A / ISO 10432 C
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API Specification 14A / ISO 10432 I
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INTERNATIONAL STANDARD API Specific
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API Specification 14A / ISO 10432 A
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INSPECTION & TESTING REQUIREMENTS S
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Charlie Chong/ Fion Zhang
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Knowing Subsurface Safety Valve- API14A

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