Knowing Subsurface Safety Valve- API14A

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Subsurface safety valves provide the ultimate protection against uncontrolled flow from producing oil and gas wells in case of catastrophic damage to wellhead equipment. Their use offshore is legislated in many parts of the world to protect people and the environment. Safety valves have evolved from the relatively simple downhole devices of the 1940s to complex systems that are integral components in offshore well completions worldwide. Charlie Chong/ Fion Zhang https://www.slb.com/~/media/Files/resources/oilfield_review/ors02/win02/p52_64.pdf
Subsurface safety systems provide emergency, fail-safe closure to stop fluid flow from a wellbore if surface valves or the wellhead itself are damaged or inoperable. Safety valves are essential in offshore wells and in many land wells located in sensitive environments, or in wells that produce hazardous gases. They are installed to protect people, the environment, petroleum reserves and surface facilities. Successful installation, dependable operation and reliability of safety-valve systems are crucial to efficient and safe well performance. Perhaps the most regulated component of an oil or gas well, the safety-valve system must satisfy stringent technical, quality and operational requirements. Scrutiny of safety-valve design, manufacture and operation by regulatory bodies and operators requires valve manufacturers to apply a level of diligence and testing beyond that of related well-completion and flowcontrol equipment. This reflects the crucial role of safety valves. Charlie Chong/ Fion Zhang https://www.slb.com/~/media/Files/resources/oilfield_review/ors02/win02/p52_64.pdf
Page 1 and 2: Knowing Subsurface Safety Valve Equ
Page 3 and 4: Charlie Chong/ Fion Zhang Fion Zhan
Page 5 and 6: The Magical Subsurface Safety Valve
Page 7 and 8: Subsurface Safety Valve (SSSV) Down
Page 9 and 10: Well Completion Charlie Chong/ Fion
Page 11 and 12: Part 1: Knowing Subsurface Safety V
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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
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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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