Glossary
Browse the IADC Lexicon alphabetically or by category. Get comprehensive definitions of drilling industry terms.
Moonpool Guidance System
Definition(s)
Moonpool Guidance System
Structure installed to prevent contact between the BOP stack and the structure of a floating MODU during the deployment and retrieval of the BOP stack. Source: API SPEC 7K, Drilling and Well Servicing Equipment Upstream Segment, Fifth Edition, June 2010 (August 2010). Global Standards Source:API SPECIFICATION 7K, Drilling and Well Servicing Equipment, Sixth Edition, December 2015. Global StandardsMinimum Bend Radius (MBR)
Definition(s)
Minimum Bend Radius (MBR)
The minimum hose bending radius dimension measured from the centerline of the hose specified in Table 9. NOTE: See Figure 11. Source: API SPEC 7K, Drilling and Well Servicing Equipment Upstream Segment, Fifth Edition, June 2010 (August 2010). Global StandardsMinimum Bend Radius
Minimum radius to which the synthetic fiber rope construction can be bent to without damage to any part of the rope construction (including the jacket and filter). Source: API RP 2SM, Design, Manufacture, Installation, and Maintenance of Synthetic Fiber Ropes for Offshore Mooring, First Edition, July 2014. Global StandardsMaximum Working Temperature
Definition(s)
Maximum Working Temperature
The upper limit of the temperature range specified in 9.6.3. Source: API SPEC 7K, Drilling and Well Servicing Equipment Upstream Segment, Fifth Edition, June 2010 (August 2010). Global StandardsMaximum Working Temperature
The upper limit of the temperature range specified in 9.7.3.
Source:API SPECIFICATION 7K, Drilling and Well Servicing Equipment, Sixth Edition, December 2015. Global StandardsMaximum Allowable Stress
Definition(s)
Maximum Allowable Stress
Specified minimum yield strength divided by the design safety factor. Source: API SPEC 7K, Drilling and Well Servicing Equipment Upstream Segment, Fifth Edition, June 2010 (August 2010). Global Standards Source:API SPECIFICATION 7K, Drilling and Well Servicing Equipment, Sixth Edition, December 2015. Global StandardsMaximum Allowable Stress
The specified minimum yield strength divided by the design safety factor. Source: API SPEC 8C, Drilling and Production Hoisting Equipment (PSL 1 and PSL 2), Fifth Edition, April 2012. Global StandardsLoose Gear
Definition(s)
Loose Gear
Off-the-shelf equipment including, but not limited to, shackles, chain, hooks, connecting links, turnbuckles, binders, sheave blocks, and swivels used in an assembly to suspend, secure, or lift a load. Source: API SPEC 7K, Drilling and Well Servicing Equipment Upstream Segment, Fifth Edition, June 2010 (August 2010). Global Standards Source:API SPECIFICATION 7K, Drilling and Well Servicing Equipment, Sixth Edition, December 2015. Global StandardsIdentical Design Concept
Definition(s)
Identical Design Concept
Property of a family of units whereby all units of the family have similar geometry in the primary load-carrying areas. Source: API SPEC 7K, Drilling and Well Servicing Equipment Upstream Segment, Fifth Edition, June 2010 (August 2010). Global Standards Source:API SPECIFICATION 7K, Drilling and Well Servicing Equipment, Sixth Edition, December 2015. Global Standards Source: API SPEC 8C, Drilling and Production Hoisting Equipment (PSL 1 and PSL 2), Fifth Edition, April 2012. Global StandardsHose Design Family
Definition(s)
Hose Design Family
Hose assemblies of different internal diameters and working pressures with the same number of reinforcing plies and utilizing the same method of hose coupling attachment and designed to the same design methodology and maximum allowable stress criteria. Source: API SPEC 7K, Drilling and Well Servicing Equipment Upstream Segment, Fifth Edition, June 2010 (August 2010). Global Standards Source:API SPECIFICATION 7K, Drilling and Well Servicing Equipment, Sixth Edition, December 2015. Global StandardsHose End Connector
Definition(s)
Hose End Connector
A fitting located at the end of a hose assembly featuring line pipe threads as specified in API 5B, or for example a flange or hub as specified in API 6A, or hammer lug union, that is butt-welded to or is manufactured as an integral part of the hose coupling material that allows a hose assembly to be connected to a piping system. NOTE: See Figure 11. Source: API SPEC 7K, Drilling and Well Servicing Equipment Upstream Segment, Fifth Edition, June 2010 (August 2010). Global StandardsHose Coupling
Definition(s)
Hose Coupling
Fitting attached to the ends of the hose body. Source: API SPEC 7K, Drilling and Well Servicing Equipment Upstream Segment, Fifth Edition, June 2010 (August 2010). Global Standards Source:API SPECIFICATION 7K, Drilling and Well Servicing Equipment, Sixth Edition, December 2015. Global StandardsHose Body
Definition(s)
Hose Body
Plain end hose with no hose couplings or end connectors attached. Source: API SPEC 7K, Drilling and Well Servicing Equipment Upstream Segment, Fifth Edition, June 2010 (August 2010). Global Standards Source:API SPECIFICATION 7K, Drilling and Well Servicing Equipment, Sixth Edition, December 2015. Global StandardsHose Assembly
Definition(s)
Hose Assembly
Consists of hose body and hose coupling. NOTE: See Figure 11. Source: API SPEC 7K, Drilling and Well Servicing Equipment Upstream Segment, Fifth Edition, June 2010 (August 2010). Global Standards Source:API SPECIFICATION 7K, Drilling and Well Servicing Equipment, Sixth Edition, December 2015. Global StandardsHigh-Pressure Mud Hose
Definition(s)
High-Pressure Mud Hose
A rotary hose, vibrator hose, or jumper hose. Source: API SPEC 7K, Drilling and Well Servicing Equipment Upstream Segment, Fifth Edition, June 2010 (August 2010). Global Standards Source:API SPECIFICATION 7K, Drilling and Well Servicing Equipment, Sixth Edition, December 2015. Global StandardsHigh-Pressure Cement Hose
Definition(s)
High-Pressure Cement Hose
A hose used strictly for the conveyance of cement slurries at high pressure. Source: API SPEC 7K, Drilling and Well Servicing Equipment Upstream Segment, Fifth Edition, June 2010 (August 2010). Global Standards Source:API SPECIFICATION 7K, Drilling and Well Servicing Equipment, Sixth Edition, December 2015. Global StandardsHigh Pressure (HP)
Definition(s)
High Pressure
Working pressure values ranging from 10.3 MPa to 103.4 MPa (1500 psi to 15,000 psi). NOTE: See Table 9. Source: API SPEC 7K, Drilling and Well Servicing Equipment Upstream Segment, Fifth Edition, June 2010 (August 2010). Global Standards Source:API SPECIFICATION 7K, Drilling and Well Servicing Equipment, Sixth Edition, December 2015. Global StandardsHazardous Area or Zone
Definition(s)
Hazardous Area or Zone
A location where fire or explosion hazards may exist due to flammable gases or vapors, flammable liquids, combustible dust, or ignitable fibers or flyings. Source: API SPEC 7K, Drilling and Well Servicing Equipment Upstream Segment, Fifth Edition, June 2010 (August 2010). Global Standards Source:API SPECIFICATION 7K, Drilling and Well Servicing Equipment, Sixth Edition, December 2015. Global StandardsEnd Connector
Definition(s)
End Connector
A fitting located at the end of a hose assembly featuring line pipe threads that allows a hose assembly to be connected to a piping system. EXAMPLE: A flange or hub, as specified in API 6A, or a hammer lug union that is butt-welded to, or is manufactured as an integral part of the hose coupling material. NOTE 1: See API 5B for line pipe thread specifications. NOTE 2: See Figure 11. Source: API SPEC 7K, Drilling and Well Servicing Equipment Upstream Segment, Fifth Edition, June 2010 (August 2010). Global Standards Source:API SPECIFICATION 7K, Drilling and Well Servicing Equipment, Sixth Edition, December 2015. Global StandardsDynamic Load
Definition(s)
Dynamic Load
Load applied to the equipment due to acceleration effects. Source: API SPEC 7K, Drilling and Well Servicing Equipment Upstream Segment, Fifth Edition, June 2010 (August 2010). Global Standards Source:API SPECIFICATION 7K, Drilling and Well Servicing Equipment, Sixth Edition, December 2015. Global Standards Source: API SPEC 8C, Drilling and Production Hoisting Equipment (PSL 1 and PSL 2), Fifth Edition, April 2012. Global StandardsDrilling Liquids
Definition(s)
Drilling Liquids
Liquid solutions (referred to as mud) conveyed at high pressure through the high-pressure mud piping system, mud standpipe, rotary hose, rotary swivel stem, drill string, and drill bit to accommodate the drilling process. NOTE: For the purpose of this specification, drilling liquids do not include fluids containing pressurized air or gasses of any kind. Source: API SPEC 7K, Drilling and Well Servicing Equipment Upstream Segment, Fifth Edition, June 2010 (August 2010). Global Standards Source:API SPECIFICATION 7K, Drilling and Well Servicing Equipment, Sixth Edition, December 2015. Global StandardsDesign Verification Test
Definition(s)
Design Verification Test
Test undertaken to validate the integrity of the design calculations used. Source: API SPEC 7K, Drilling and Well Servicing Equipment Upstream Segment, Fifth Edition, June 2010 (August 2010). Global Standards Source:API SPECIFICATION 7K, Drilling and Well Servicing Equipment, Sixth Edition, December 2015. Global Standards Source: API SPEC 8C, Drilling and Production Hoisting Equipment (PSL 1 and PSL 2), Fifth Edition, April 2012. Global StandardsDesign Safety Factor (DSF)
Definition(s)
Design Safety Factor (DSF)
Factor to account for a certain safety margin between the maximum allowable stress and the minimum specified yield strength of the material. Source: API SPEC 7K, Drilling and Well Servicing Equipment Upstream Segment, Fifth Edition, June 2010 (August 2010). Global StandardsDesign Safety Factor
Factor to account for a certain safety margin between the maximum allowable stress and the specified minimum yield strength of a material. Source: API SPEC 8C, Drilling and Production Hoisting Equipment (PSL 1 and PSL 2), Fifth Edition, April 2012. Global StandardsBOP Handling Systems And Equipment
Definition(s)
BOP Handling Systems And Equipment
Equipment designed for the purpose of storing, lifting, lowering, and transporting BOP stacks used on drilling and/or production facilities or rigs. Source: API SPEC 7K, Drilling and Well Servicing Equipment Upstream Segment, Fifth Edition, June 2010 (August 2010). Global Standards Source:API SPECIFICATION 7K, Drilling and Well Servicing Equipment, Sixth Edition, December 2015. Global StandardsRH
Definition(s)
RH
Right hand. Source: API SPEC 7-1, Specification for Rotary Drill Stem Elements, First Edition, March 2006 (Addendum April 2011). Global StandardsREG
Definition(s)
REG
API regular style of thread design. Source: API SPEC 7-1, Specification for Rotary Drill Stem Elements, First Edition, March 2006 (Addendum April 2011). Global StandardsNC
Definition(s)
NC
API number style of thread design. Source: API SPEC 7-1, Specification for Rotary Drill Stem Elements, First Edition, March 2006 (Addendum April 2011). Global StandardsNc
Bearing capacity factor at shallow spudcan penetration prior to any backflow.
Source: ABS Guidance Notes on Geotechnical Performance of Spudcan Foundations, January 2017. Global Standards
LH
Definition(s)
LH
Left hand. Source: API SPEC 7-1, Specification for Rotary Drill Stem Elements, First Edition, March 2006 (Addendum April 2011). Global StandardsFH
Definition(s)
Fh
Horizontal impact force.
Source: API Standard 2CCU, Offshore Cargo Carrying Units, First Edition, August 2017. Global StandardsFH
API full-hole style of thread design. Source: API SPEC 7-1, Specification for Rotary Drill Stem Elements, First Edition, March 2006 (Addendum April 2011). Global StandardsFH
Leg horizontal reaction associated with FV.
Source: ABS Guidance Notes on Geotechnical Performance of Spudcan Foundations, January 2017. Global Standards