Type Certification Testing

Type Certification Testing

Definition(s)

 

Type Certification Testing

Testing of a representative product by the manufacturer that qualifies the design and validates the integrity of subsequent products of the same design, materials, and manufacture.

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

Type Certification Testing

Testing by a manufacturer of a representative specimen (or prototype) of a product which qualifies the design and, therefore, validates the integrity of other products of the same design, materials and manufacture. 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  

Type Certification Testing

Testing by a manufacturer of a representative specimen (or prototype) of a product that qualifies the design and, therefore, validates the integrity of other products of the same design, materials and manufacture. Source: API SPEC 16D, Specification for Control Systems for Drilling Well Control Equipment and Control Systems for Diverter Equipment, Upstream Segment, Second Edition, July 2004. 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
Thrust Collar

Thrust Collar

Definition(s)

 

Thrust Collar

Structural member for transmitting the vertical force from buoyancy modules to the riser to help restrain the buoyancy modules from moving along the riser joint.

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

Thrust Collar

A device for transmitting the buoyant force of a buoyancy module to the riser joint. 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
Threaded Union Coupling

Threaded Union Coupling

Definition(s)

Threaded Union Coupling

Coupling having mating threaded members on the pin and box to form engagement.
  • NOTE: 1 Threads on one side of the coupling are free to rotate relative to the riser pipe such that the joint does not have to rotate to make up the coupling.
  • NOTE: 2 The threads do not form a seal.
Source: API Specification 16Q, Design, Selection, Operation, and Maintenance of Marine Drilling Riser Systems, Second Edition, April 2017. Global Standards

Threaded Union Coupling

A coupling having mating threaded members on the pin and box to form engagement. Threads on one side of the coupling are free to rotate relative to the riser pipe so that the joint does not have to rotate to make up the coupling. The threads do not form the seal. 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  

Threaded-Union Coupling

Coupling having mating threaded members on the pin and box to form the engagement.
  • NOTE: The threads on one side of the coupling are free to rotate relative to the riser pipe, so it is not necessary that that the joint rotate to make up the coupling. The threads do not form the seal.
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
Terminal Fitting

Terminal Fitting

Definition(s)

Terminal Fitting

Connection, commonly referred to as a gooseneck, between a rigid choke, kill, or auxiliary line on a telescopic joint and its mating drape hose, affecting a nominal 180° turn in flow direction.

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

Terminal Fitting

The connection between a rigid choke, kill, or auxiliary line on a telescopic joint and its drape hose, effecting a nominal 180" turn in flow direction. 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  

Terminal Fitting

Connection between a rigid choke, kill or auxiliary line on a telescopic joint and its drape hose, effecting a nominal 180° turn in flow direction. 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
Telescopic Joint Packer

Telescopic Joint Packer

Definition(s)

Telescopic Joint Packer

Means of sealing the annular space between the inner and outer barrels of a telescopic joint.

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

Telescopic Joint Packer

The means of sealing the annular space between the inner and outer barrels of the telescopic joint. 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
Telescopic Joint (TJ)

Telescopic Joint (TJ)

Definition(s)

Telescopic Joint (Slip Joint)

Riser joint having a stroking inner barrel (pipe) inside an outer barrel (pipe) with a sealing means between them to retain bore pressure.

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

Telescopic Joint (Slip Joint)

A riser joint having an inner barrel and an outer barrel with sealing means between. 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: 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  

Telescopic 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
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
Running Tool

Running Tool

Definition(s)

Running Tool

Manual or hydraulic device that interfaces between the drill string elevator and the riser joint that permits the deployment and retrieval of the riser string and BOP stack.

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

Running Tool

See Handling Tool. 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  

Running Tool

Specialized tool used to run equipment in a well.
  • EXAMPLE: Wireline running tool or various types of tubing-type running tools.
Source: API RP 17G, Recommended Practice for Completion/Workover Risers, Second Edition, July 2006 (Reaffirmed April 2011). Global Standards  

Running Tool

Tool used to run, retrieve, position or connect wellhead equipment remotely from the drill floor.  Source: API SPEC 6A, Specification for Wellhead and Christmas Tree Equipment, Twentieth Edition, October 2010 (Addendum November 2012). Global Standards  

Running Tool

Tool used to run, retrieve, position or connect subsea equipment remotely from the surface. EXAMPLES Tree running tools, tree cap running tools, flowline connector running tools, etc.5 Source: API SPEC 17D, Design and Operation of Subsea Production Systems—Subsea Wellhead and Tree Equipment, Upstream Segment, Second Edition May 2011 (Errata September 2011). Global Standards  

Running Tool

Tool used to install, operate, retrieve, position or connect subsea equipment remotely from the surface. NOTE An example is the subsea control-module running tool. Source: API SPEC 17F, Specification for Subsea Production Control Systems, Second Edition, December 2006 (Reaffirmed April 2011). Global Standards  

Running Tool

device that joins to the upper end of a riser joint to permit lifting and lowering of the joint and the assembled riser string in the derrick by the elevators. 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
RKB

RKB

Definition(s)

RKB

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

RKB

Bushing that rotationally connects the rotary table to the drill string kelly bar, the top of which is commonly used as vertical reference for the drill floor. Source: API Specification 16Q, Design, Selection, Operation, and Maintenance of Marine Drilling Riser Systems, Second Edition, April 2017. Global Standards

RKB (Rotary Kelly Bushing)

Commonly used vertical reference h m the drillfloor. 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  

 

RKB

bushing that sits on top of the rotary table.
  • NOTE: It transmits torque from the rotary table to the kelly and is commonly used as a reference for vertical measurements from the drill-floor.
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
Riser Tensioner Ring

Riser Tensioner Ring

Definition(s)

Riser Tensioner Ring

The structural interface of the telescopic joint outer barrel and the riser tensioners. 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  

Riser Tensioner Ring

Structural interface of the telescopic joint outer barrel and the riser tensioners. 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  
Riser Tensioner

Riser Tensioner

Definition(s)

Riser Tensioner

Means for providing and maintaining top tension on the deployed riser string to prevent buckling. 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
Riser Support Shoulder

Riser Support Shoulder

Definition(s)

Riser Support Shoulder

See Landing Shoulder. 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  

Riser Support Shoulder

Shoulder or projection on the external surface of a riser coupling or other riser component for supporting the riser and BOP stack during deployment and retrieval.  
Riser String

Riser String

Definition(s)

Riser String

A deployed assembly of riser joints. 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  

Riser String

Deployed assembly of riser joints. Source: API Specification 16Q, Design, Selection, Operation, and Maintenance of Marine Drilling Riser Systems, Second Edition, April 2017. 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
Riser Spider

Riser Spider

Definition(s)

Riser Spider

Device having retractable load-bearing members used to support the riser string on the uppermost riser coupling load shoulder during deployment and retrieval of the riser.

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

Riser Spider

A device having retractable jaws or dogs used to support the riser string on the uppermost coupling support shoulder during deployment and retrieval of the riser. 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  

Riser Spider

Equipment used to support the marine riser while it is being run or retrieved. Source: API RP 64, Recommended Practice for Diverter Systems Equipment and Operations, Second Edition, November 2001 (March 1, 2007). Global Standards  
Riser Recoil System

Riser Recoil System

Definition(s)

Riser Recoil System

Means of controlling the upward acceleration of the riser when a disconnect is made at the riser connector.

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

Riser Recoil System

A means of limiting the upward acceleration of the riser when a disconnect is made at the riser connector. 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
Riser Main Tube

Riser Main Tube

Definition(s)

Riser Main Tube (Riser Pipe)

The seamless or electric welded pipe which forms the principal conduit of the riser joint. The riser main tube is the conduit for guiding the drill string and containing the return fluid flow from the well. 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  

Riser Main Tube

The basic pipe from which riser joints are fabricated. Source: API SPEC 16R, Specification for Marine Drilling Riser Couplings, Exploration and Production Department, First Edition, January 1997. Global Standards  

Riser Main Tube

Seamless or electric-welded pipe that forms the principal conduit of the riser joint. NOTE The riser main tube is the conduit for guiding the drillstring and containing the return fluid flow from the well. 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  
Riser Hangoff System

Riser Hangoff System

Definition(s)

Riser Hangoff System

Means of supporting a disconnected riser from a drilling vessel during a storm without inducing excessive stresses in the riser.

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

Riser Hangoff System

A means for supporting a disconnected deepwater riser from the drilling vessel during a storm without inducing excessive stresses in the riser. 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  

Riser Hang-Off System

Means for supporting a disconnected deep-water riser from the drilling vessel during a storm without inducing excessive stresses in the riser. 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
Riser Disconnect

Riser Disconnect

Definition(s)

Riser Disconnect

Operation of unlatching the riser connector to separate the riser and LMRP from the lower stack.

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

Riser Disconnect

The operation of unlatching of the riser connector to separate the riser and LMRP from the BOP stack. 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  

Riser Disconnect

Operation of unlatching a riser connector. EXAMPLE Disconnecting the emergency disconnect package from the lower riser package and/or disconnecting the riser from the subsea test tree. Source: API RP 17G, Recommended Practice for Completion/Workover Risers, Second Edition, July 2006 (Reaffirmed April 2011). Global Standards
Riser Connector

Riser Connector

Definition(s)

Riser Connector (LMRP Connector)

See hydraulic connector.

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

Riser Connector (LMRP Connector)

A hydraulically operated connector that joins the LMRP to the top of the BOP stack. 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
Riser Annulus

Riser Annulus

Definition(s)

Riser Annulus

Space between the riser string inner diameter and the outer diameter of the pipe (drill pipe, casing, tubing) suspended inside the riser string

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

Riser Annulus

The space around a pipe (drillpipe, casing or tubing) suspended in a riser; its outer boundary is the internal surface of the riser pipe. 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  

Riser Annulus

Space around a pipe (drillpipe, casing or tubing) suspended in a riser. NOTE Its outer boundary is the internal surface of the riser pipe. 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