Spider

Spider

Definition(s)

Spider

Device having retractable jaws or dogs used to support the riser on the uppermost connector support shoulder during running of the riser. NOTE The handling spider sits either on the rotary bushing or in the rotary table. It provides a hang-off point for the integral C/WO riser. Some spiders will lock to the rotary via the kelly drive pinholes in the master bushing. With the pins engaged, the spider can resist torque. For non-integral risers, tubing slips and false rotaries are used in lieu of the spider. Source: API RP 17G, Recommended Practice for Completion/Workover Risers, Second Edition, July 2006 (Reaffirmed April 2011). Global Standards  

Spider

A device for the purpose of suspending tubular goods of any type from the drilling structure, not capable of being used as elevators, that have some element on the internal diameter to grip the outer diameter surface of the pipe body of various tubular goods, that are operated manually or by spring(s) and/or pneumatic or hydraulic power or other assist device or method.

Source:API SPECIFICATION 7K, Drilling and Well Servicing Equipment, Sixth Edition, December 2015. Global Standards
Specified Minimum Yield Strength

Specified Minimum Yield Strength

Definition(s)

Specified Minimum Yield Strength

Minimum yield strength at room temperature prescribed by the specification or standard under which the material is purchased. Source: API Technical Report 17TR7, Verification and Validation of Subsea Connectors, First Edition, April 2017. Global Standards Source: API Standard 2RD, Dynamic Risers for Floating Production Systems, Second Edition, September 2013. Global Standards Source: API RP 17G, Recommended Practice for Completion/Workover Risers, Second Edition, July 2006 (Reaffirmed April 2011). Global Standards  

Specified Minimum Yield Strength (SMYS)

The minimum yield strength prescribed by the specification or standard under which the material is purchased. Source: Offshore Standard DNV-OS-C101, Design of Offshore Steel Structures, General (LRFD Method, Det Norske Veritas, April 2011. Global Standards
S-N Curve

S-N Curve

Definition(s)

S-N Curve

Quantitative relationship between the fatigue stress, S, and the number of cycles, N, corresponding to a specific probability of failure for a detail, derived from test data.

Source: API Technical Report 17TR7, Verification and Validation of Subsea Connectors, First Edition, April 2017. Global Standards

S-N Curve

A plot of stress range (S) against the number of cycles (N) to failure obtained by cycling specimens to failure. Source: API Standard 2RD, Dynamic Risers for Floating Production Systems, Second Edition, September 2013. Global Standards

S-N Curve

Graphical presentation of the dependence of fatigue life, N, on fatigue strength, S. NOTE It is also known as the Wöhler curve. Source: API RP 17G, Recommended Practice for Completion/Workover Risers, Second Edition, July 2006 (Reaffirmed April 2011). Global Standards
Slick Joint

Slick Joint

Definition(s)

Slick Joint

Riser joint of standard length without attached buoyancy.

Source: API Specification 16Q, Design, Selection, Operation, and Maintenance of Marine Drilling Riser Systems, Second Edition, April 2017. Global Standards

Slick Joint

Special riser joint designed to prevent damage to the riser and control umbilical where they pass through the rotary table. NOTE Usually included in C/WO risers and is sometimes named “cased wear joint”. Source: API RP 17G, Recommended Practice for Completion/Workover Risers, Second Edition, July 2006 (Reaffirmed April 2011). Global Standards
Shearing Valve

Shearing Valve

Definition(s)

Shearing Valve

Gate valve or ball valve designed to shear wireline or coiled tubing and that can seal the bore. Source: API RP 17G, Recommended Practice for Completion/Workover Risers, Second Edition, July 2006 (Reaffirmed April 2011). Global Standards
Service Life

Service Life

Definition(s)

Service Life

Duration of time in which the equipment performs under the specified design conditions, i.e. time in active connected riser operations, excluding storage periods.
  • NOTE: The service life is normally a small fraction of the design life.
Source: API Technical Report 17TR7, Verification and Validation of Subsea Connectors, First Edition, April 2017. Global Standards

Service Life

Duration of time in which the equipment performs under the specified design conditions, i.e. time in active operation excluding storage periods.
  • NOTE: The service life is normally a small fraction of the design life.
Source: API Standard 2RD, Dynamic Risers for Floating Production Systems, Second Edition, September 2013. Global Standards Source: API RP 17G, Recommended Practice for Completion/Workover Risers, Second Edition, July 2006 (Reaffirmed April 2011). Global Standards  

Service Life

Specified time during which the umbilical system shall be capable of meeting the functional requirements. Source: API SPEC 17E, Specification for Subsea Umbilicals, Upstream Segment, Fourth Edition, October 2010. Global Standards  

Service Life

Period of time during which the flexible pipe fulfils all performance requirements. Source: API SPEC 17J, Specification for Unbonded Flexible Pipe, Third Edition, July 2008. Global Standards
Secure Status

Secure Status

Definition(s)

Secure Status

Establishment of two independent barriers between the reservoir and the environment. Source: API RP 17G, Recommended Practice for Completion/Workover Risers, Second Edition, July 2006 (Reaffirmed April 2011). Global Standards
Secondary Load

Secondary Load

Definition(s)

Secondary Load

Load induced by structural deformation (or the prevention thereof) in the riser which is necessary to satisfy the laws of compatibility of strain and deformation. NOTE The internal forces induced by a secondary load diminish when yielding occurs. Secondary loads do not have to be taken into account where they do not affect the resistance of the member/component to resist other loads. Preload of bolts in flanges is an example. During make-up of a flange, the torque/tension applied by the tool on the bolts is primary, but after make-up, the residual bolt preload is secondary. EXAMPLE An example of a secondary load is the bending caused in the C/WO riser during operation within the drilling riser due to flex joint/ball joint angles. Bending moments that exceed yield, in this case, do not generally cause excessive yielding and failure. Other examples are differential temperature in restrained sections and residual stresses after welding. Source: API RP 17G, Recommended Practice for Completion/Workover Risers, Second Edition, July 2006 (Reaffirmed April 2011). Global Standards
Seismic Extracted Data Grid

Seismic Extracted Data Grid

Definition(s)

Seismic extracted data grid

Seismic extracted data grid means a series of vertical cross-sections extracted from a 3 dimensional seismic data volume that form a grid of which:
  1. one direction is along the direction of seismic data acquisition; and
  2. the other direction is at right angles to the direction of seismic data acquisition; and
  3. the vertical cross-sections are spaced 5 kilometres apart in both directions.
Source: Offshore Petroleum and Greenhouse Gas Storage (Resource Management and Administration) Regulations 2011 (Select Legislative Instrument 2011 No. 54 as amended), Australia, prepared on 1 January 2012. Regulations  
SMART

SMART

Definition(s)

SMART

Specific, Measurable, Achievable, Realistic, Targeted. Source: NOPSEMA Guidance Note: Safety Management Systems, N04300-GN1052, Australia, Revision 0, December 2012. Regulatory Guidance  
Safety Management System

Safety Management System

Definition(s)

Safety Management System

"Safety Management system" means a structured and documented system enabling company personnel to implement effectively the company safety and environmental protection policy, as defined in paragraph 1.1 of International Safety Management Code. Source: IMO Resolution MEPC.213(63), 2012 Guidelines for the development of a Ship Energy Efficiency Management Plan (SEEMP), 2 March 2012, International Maritime Organization, Regulatory Guidance  

Safety Management System

Safety Management System means a structured and documented system enabling Company personnel to implement effectively the Company safety and environmental protection policy. Source: IMO Resolution MSC.104(73), amendments to the International Management Code for the Safe Operation of Ships and for Pollution Prevention (International Safety Management (ISM) Code), 5 December 2000, International Maritime Organization. Legislation

Safety Management System

A Safety Management System comprises all policies, objectives, roles, responsibilities accountabilities, codes, standards, communications, processes, procedures, tools, data and documents for managing safe operation of the facility. In the context of the OPGGS(S) Regulations, the SMS comprises all these aspects with a strong focus on the prevention, reduction or mitigation of MAEs. The SMS is not just documentation but is the actual implementation of processes, systems, procedures and practices on the facility. Source: NOPSEMA Guidance Note: Safety Management Systems, N04300-GN1052, Australia, Revision 0, December 2012. Regulatory Guidance  

Safety Management System

Safety management system, for a facility, means a system for managing occupational health and safety at the facility. Source:  Offshore Petroleum and Greenhouse Gas Storage (Safety) Regulations 2009 (Select Legislative Instrument 2009 No. 382 as amended), Australia, prepared on 1 January 2012. Regulations  

Safety Management System

Safety management system means a system— (a) to assure the safe operation of an installation through the effective management of hazards, including major accident hazards; and (b) that addresses the matters set out in Schedule 1. Source: Health and Safety in Employment (Petroleum Exploration and Extraction) Regulations 2013, SR 2013/208, New Zealand, as of May 2013. Regulations
SEG

SEG

Definition(s)

SEG

Similar Exposure Group. A work group comprised of individuals who carry out similar tasks and are therefore expected to have similar exposure profiles. Source: NOPSEMA Guidance Note: Noise Management—Principles of Assessment and Control, N-09000-GN0401, Australia, Revision 3, December 2011. Regulatory Guidance  
SDV

SDV

Definition(s)

SDV

Shut-Down Valves. Source: NOPSEMA Guidance Note: Control Measures and Performance Standards, N-04300 GN0271, Australia, Revision 3, December 2011. Regulatory Guidance  
SA

SA

Definition(s)

SA

Static application. Source: API RP 17B, Recommended Practice for Flexible Pipe, Fourth Edition, July 2008. Global Standards  

SA

Solution-annealed. Source: API SPEC 5CRA, Specification for Corrosion Resistant Alloy Seamless Tubes for Use as Casing, Tubing and Coupling Stock, Upstream Segment, First Edition, February 2010 (Errata August 2011). Global Standards  
Subsea Buoy

Subsea Buoy

Definition(s)

Subsea Buoy

Concentrated buoyancy system. NOTE This system generally consists of steel or syntactic foam tanks, as used in S-type riser configurations (4.4.5). See also buoyancy module (3.1.5). Source: API RP 17B, Recommended Practice for Flexible Pipe, Fourth Edition, July 2008. Global Standards
Steep-S

Steep-S

Definition(s)

Steep-S

Lazy-S with a touchdown point fixed to the seabed. NOTE See Figure 4. Source: API RP 17B, Recommended Practice for Flexible Pipe, Fourth Edition, July 2008. Global Standards
Steep Wave

Steep Wave

Definition(s)

Steep Wave

Lazy wave with a touchdown point fixed to the seabed. NOTE See Figure 4. Source: API RP 17B, Recommended Practice for Flexible Pipe, Fourth Edition, July 2008. Global Standards
Sway

Sway

Definition(s)

Sway

Vessel motion along the port/starboard axis. Source: API RP 16Q, Recommended Practice for Design, Selection, Operation and Maintenance of Marine Drilling Riser Systems, First Edition, November 1993 (Reaffirmed August 2001). Global Standards Source: API RP 17G, Recommended Practice for Completion/Workover Risers, Second Edition, July 2006 (Reaffirmed April 2011). Global Standards Source: ISO 13624-1:2009, Petroleum and natural gas industries – Drilling and production equipment – Part 1:Design and operation of marine drilling riser equipment. Global Standards
Support Brackets

Support Brackets

Definition(s)

Support Brackets (clamps)

Structural members positioned at sufficient intervals along the riser main tube to support the choke, kill, and auxiliary lines and prevent line buckling.

Source: API Specification 16Q, Design, Selection, Operation, and Maintenance of Marine Drilling Riser Systems, Second Edition, April 2017. Global Standards

Support Brackets

Brackets positioned at intervals along a riser joint that provide intermediate radial and lateral support from the riser main tube to the choke, kill and auxiliary lines. Source: API RP 16Q, Recommended Practice for Design, Selection, Operation and Maintenance of Marine Drilling Riser Systems, First Edition, November 1993 (Reaffirmed August 2001). Global Standards  

Support Bracket

Bracket positioned at intervals along a riser joint that provides intermediate radial and lateral support from the riser main tube to the choke, kill and auxiliary lines. Source: ISO 13624-1:2009, Petroleum and natural gas industries – Drilling and production equipment – Part 1:Design and operation of marine drilling riser equipment. Global Standards
Subsea Fillup Valve

Subsea Fillup Valve

Definition(s)

Subsea Fillup Valve

A special riser joint having a valve means to allow the riser annulus to be opened to the sea. To prevent riser pipe collapse, the valve may be opened by an automatic actuator controlled by a differential-pressure sensor. Source: API RP 16Q, Recommended Practice for Design, Selection, Operation and Maintenance of Marine Drilling Riser Systems, First Edition, November 1993 (Reaffirmed August 2001). Global Standards  

Subsea Fill-Up Valve

Special riser joint having a valve means to allow the riser annulus to be opened to the sea. NOTE To prevent riser pipe collapse, the valve can be opened by an automatic actuator controlled by a differential pressure sensor. Source: ISO 13624-1:2009, Petroleum and natural gas industries – Drilling and production equipment – Part 1:Design and operation of marine drilling riser equipment. Global Standards  
Submerged Weight

Submerged Weight

Definition(s)

Submerged Weight

In-air weight minus buoyancy due to water displacement.
  • NOTE: 1 The submerged weight of a riser string depends on the mode of operation, i.e. connected or suspended. For a connected riser and a suspended riser, internal and external pressures act on internal and external surfaces of the pipe and buoyancy.
  • NOTE: 2 For a suspended riser, pressure end loads occur at the exposed areas at the bottom of the riser string
Source: API Specification 16Q, Design, Selection, Operation, and Maintenance of Marine Drilling Riser Systems, Second Edition, April 2017. Global Standards

Submerged Weight

See Apparent Weight. Source: API RP 16Q, Recommended Practice for Design, Selection, Operation and Maintenance of Marine Drilling Riser Systems, First Edition, November 1993 (Reaffirmed August 2001). Global Standards  

Submerged Weight

Submerged weight including content minus buoyancy. Source: API RP 17G, Recommended Practice for Completion/Workover Risers, Second Edition, July 2006 (Reaffirmed April 2011). Global Standards  

Submerged Weight

Weight minus buoyancy. NOTE Apparent weight is commonly referred to as weight in water, wet weight, submerged weight, or effective weight. Source: ISO 13624-1:2009, Petroleum and natural gas industries – Drilling and production equipment – Part 1:Design and operation of marine drilling riser equipment. Global Standards
Strumming

Strumming

Definition(s)

Strumming

See Vortex Induced Vibration. Source: API Specification 16Q, Design, Selection, Operation, and Maintenance of Marine Drilling Riser Systems, Second Edition, April 2017. Global Standards Source: API RP 16Q, Recommended Practice for Design, Selection, Operation and Maintenance of Marine Drilling Riser Systems, First Edition, November 1993 (Reaffirmed August 2001). Global Standards
Strakes

Strakes

Definition(s)

Strakes

Helically wound appendages attached to the outside of the riser to suppress vortex induced vibrations. Source: API Specification 16Q, Design, Selection, Operation, and Maintenance of Marine Drilling Riser Systems, Second Edition, April 2017. Global Standards Source: API RP 16Q, Recommended Practice for Design, Selection, Operation and Maintenance of Marine Drilling Riser Systems, First Edition, November 1993 (Reaffirmed August 2001). Global Standards Source: ISO 13624-1:2009, Petroleum and natural gas industries – Drilling and production equipment – Part 1:Design and operation of marine drilling riser equipment. Global Standards
Storm Disconnect

Storm Disconnect

Definition(s)

Storm Disconnect

Riser disconnect to avoid excessive loading from vessel motions amplified by inclement weather conditions.

Source: API Specification 16Q, Design, Selection, Operation, and Maintenance of Marine Drilling Riser Systems, Second Edition, April 2017. Global Standards

Storm Disconnect

A riser disconnect to avoid excessive loading from vessel motions amplified by inclement weather conditions. Source: API RP 16Q, Recommended Practice for Design, Selection, Operation and Maintenance of Marine Drilling Riser Systems, First Edition, November 1993 (Reaffirmed August 2001). Global Standards Source: ISO 13624-1:2009, Petroleum and natural gas industries – Drilling and production equipment – Part 1:Design and operation of marine drilling riser equipment. Global Standards
Standard Riser Joint

Standard Riser Joint

Definition(s)

Standard Riser Joint

A joint of typical length for a particular drilling vessel's riser storage racks, the derrick V-door size, riser handling equipment capacity or a particular riser purchase. Source: API RP 16Q, Recommended Practice for Design, Selection, Operation and Maintenance of Marine Drilling Riser Systems, First Edition, November 1993 (Reaffirmed August 2001). Global Standards Source: ISO 13624-1:2009, Petroleum and natural gas industries – Drilling and production equipment – Part 1:Design and operation of marine drilling riser equipment. Global Standards
Stab

Stab

Definition(s)

Stab

Mating pin and box assembly that provides a pressure tight connection but requires an external force to keep the assembly together.

Source: API Specification 16Q, Design, Selection, Operation, and Maintenance of Marine Drilling Riser Systems, Second Edition, April 2017. Global Standards

Stab

A mating box and pin assembly that provides pressure-tight engagement of two pipe joints. An external mechanism is usually used to keep the box and pin engaged. For example, riser joint choke and kill stabs are retained in the stab mode by the makeup of the riser coupling. Source: API RP 16Q, Recommended Practice for Design, Selection, Operation and Maintenance of Marine Drilling Riser Systems, First Edition, November 1993 (Reaffirmed August 2001). Global Standards  

Stab

Mating box and pin assembly that provides pressure-tight engagement of two pipe joints. NOTE An external mechanism is normally used to keep the box and pin engaged. For example, riser joint annulus stabs can be retained in the stab mode by the make-up of the riser coupling. Source: API RP 17G, Recommended Practice for Completion/Workover Risers, Second Edition, July 2006 (Reaffirmed April 2011). Global Standards  

Stab

Mating box and pin assembly that provides a pressure-tight engagement of two pipe joints. NOTE An external mechanism is usually used to keep the box and pin engaged.
  • EXAMPLE Riser joint choke and kill stabs are retained in the stab mode by the make-up of the riser coupling.
Source: ISO 13624-1:2009, Petroleum and natural gas industries – Drilling and production equipment – Part 1:Design and operation of marine drilling riser equipment. Global Standards
Slip Joint

Slip Joint

Definition(s)

Slip Joint

A tool having a sealed telescoping joint designed to accommodate tubing expansion and contraction.

Source:API SPECIFICATION 19TT, Specification for Downhole Well Test Tools and Related Equipment, First Edition, October 2016. Global Standards

Slip Joint

See Telescopic Joint. Source: API Specification 16Q, Design, Selection, Operation, and Maintenance of Marine Drilling Riser Systems, Second Edition, April 2017. Global Standards Source: API RP 16Q, Recommended Practice for Design, Selection, Operation and Maintenance of Marine Drilling Riser Systems, First Edition, November 1993 (Reaffirmed August 2001). Global Standards  

Slip Joint

Riser joint having an inner barrel and an outer barrel with a means of sealing between them. NOTE The inner and outer barrels of the telescopic joint move relative to each other to compensate for the required change in the length of the riser string as the vessel experiences surge, sway, and heave. Source: ISO 13624-1:2009, Petroleum and natural gas industries – Drilling and production equipment – Part 1:Design and operation of marine drilling riser equipment. Global Standards
SAF

SAF

Definition(s)

SAF

Stress amplification factor. Source: API Specification 16Q, Design, Selection, Operation, and Maintenance of Marine Drilling Riser Systems, Second Edition, April 2017. Global Standards Source: API Technical Report 17TR7, Verification and Validation of Subsea Connectors, First Edition, April 2017. Global Standards  

SAF

Equal to the local peak alternating stress in a component (including welds) divided by the nominal alternating stress in the pipe wall at the location of the component. Source: API Specification 16Q, Design, Selection, Operation, and Maintenance of Marine Drilling Riser Systems, Second Edition, April 2017. Global Standards  

SAF

Equal to the local peak alternating stress in a component (including welds) divided by the nominal alternating stress in a defined reference section somewhere in the system (e.g. through wall section of the wellhead above or below the locking profile).
  • NOTE: This factor is used to account for the increase in the stresses caused by geometric stress amplifiers which occur in connector components.
Source: API Technical Report 17TR7, Verification and Validation of Subsea Connectors, First Edition, April 2017. Global Standards

SAF

See Stress Amplification Factor. Source: API RP 16Q, Recommended Practice for Design, Selection, Operation and Maintenance of Marine Drilling Riser Systems, First Edition, November 1993 (Reaffirmed August 2001). Global Standards Source: ISO 13624-1:2009, Petroleum and natural gas industries – Drilling and production equipment – Part 1:Design and operation of marine drilling riser equipment. Global Standards  

SAF

Value equal to the local peak alternating stress in a component (including welds) divided by the nominal alternating stress in the pipe wall at the location of the component.
  • NOTE: This factor is used to account for the increase in the stresses caused by geometric stress amplifiers that occur in riser components.
Source: ISO 13624-1:2009, Petroleum and natural gas industries – Drilling and production equipment – Part 1:Design and operation of marine drilling riser equipment. Global Standards
Station Bill

Station Bill

Definition(s)

Station Bill

A posted list, which sets forth the special duties and duty stations of each member of the personnel of a manned platform for emergencies, including a fire. Source: API RP 14G, Recommended Practice for Fire Prevention and Control on Fixed Open-type Offshore Production Platforms: Upstream Segment, Fourth Edition, April 2007. Global Standards
SI

SI

Definition(s)

SI

International System of Units. Source: API STD 521, Pressure-relieving and Depressuring Systems, Sixth Edition, January 2014. Global Standards

SI

International System. Source: API RP 14G, Recommended Practice for Fire Prevention and Control on Fixed Open-type Offshore Production Platforms: Upstream Segment, Fourth Edition, April 2007. Global Standards  

SI

Système International d'Unités. Source: NORSOK D-001, Drilling facilities, Rev. 3, December 2012. Global Standards  

SI

Site investigation. Source: ABS Guidance Notes on Geotechnical Performance of Spudcan Foundations, January 2017. Global Standards