Cross-Over Spool

Cross-Over Spool

Definition(s)

Cross-Over Spool

Flanged or other connected equipment with a restricted-area sealing means, at or near the face of its lower flange. NOTE Cross-over spools are also provided with suitable means to suspend and seal around an inner string of casing or tubing. A cross-over spool has a top connection with a pressure rating above that of the lower connection. Source: API SPEC 6A, Specification for Wellhead and Christmas Tree Equipment, Twentieth Edition, October 2010 (Addendum November 2012). Global Standards
Cross-Over Flange

Cross-Over Flange

Definition(s)

Cross-Over Flange

Double- or single-studded adapter flange with a restricted-area sealing means and with a top-connection pressure rating above that of the lower connection. Source: API SPEC 6A, Specification for Wellhead and Christmas Tree Equipment, Twentieth Edition, October 2010 (Addendum November 2012). Global Standards
Cross-Over Connector

Cross-Over Connector

Definition(s)

Cross-Over Connector

Adapter with a restricted-area sealing means and with a top-connection pressure rating above that of the lower connection. Source: API SPEC 6A, Specification for Wellhead and Christmas Tree Equipment, Twentieth Edition, October 2010 (Addendum November 2012). Global Standards
Cross

Cross

Definition(s)

Cross

Pressure-containing fitting with a minimum of four openings. Source: API SPEC 6A, Specification for Wellhead and Christmas Tree Equipment, Twentieth Edition, October 2010 (Addendum November 2012). Global Standards
Corrosion-Resistant Ring Groove

Corrosion-Resistant Ring Groove

Definition(s)

Corrosion-Resistant Ring Groove

Ring groove lined with a CRA or an austenitic stainless steel to resist metal-loss corrosion. Source: API Specification 16A, Specification for Drill-through Equipment, Fourth Edition, April 2017. Global Standards Source: API SPEC 6A, Specification for Wellhead and Christmas Tree Equipment, Twentieth Edition, October 2010 (Addendum November 2012). Global Standards  

Corrosion-Resistant Ring Groove

Ring groove lined with metal resistant to metal-loss corrosion. Source: API STANDARD 16AR, Standard for Repair and Remanufacture of Drill-through Equipment, First Edition, April 2017. Global Standards Source: API SPEC 16A, Specification for Drill-through Equipment, Third Edition, June 2004 (Errata/Supplement November 2004). Global Standards
Conformance

Conformance

Definition(s)

Conformance

Satisfying all of the requirements of the referenced specification, specification section, or document. Source: API Specification 16A, Specification for Drill-through Equipment, Fourth Edition, April 2017. Global Standards  

Conformance

Satisfying all of the specified requirements of the referenced specification, specification section, or document.

Source: API STANDARD 16AR, Standard for Repair and Remanufacture of Drill-through Equipment, First Edition, April 2017. Global Standards

Conformance

Compliance with specified requirements. Source: API SPEC 6A, Specification for Wellhead and Christmas Tree Equipment, Twentieth Edition, October 2010 (Addendum November 2012). Global Standards Source: API SPEC 16C, Specification for Choke and Kill Systems, First Edition, January 1993 (Reaffirmed 2001). Global Standards  

Conformance

Compliance with specified requirements in every detail. Source: API SPEC 16A, Specification for Drill-through Equipment, Third Edition, June 2004 (Errata/Supplement November 2004). Global Standards  

Conformance (conform)

Compliance with specified requirements in every detail. Source: API SPEC 16RCD, Specification for Drill Through Equipment—Rotating Control Devices, Upstream Segment, First Edition, February 2005. Global Standards  

Conformance

Evaluation of how well something such as an activity, action, asset, project or product adheres to defined requirements. Requirements may be defined within policies, regulations, laws, management systems, specifications, rules, codes, standards, processes or procedures. Source: IOGP Report No. 510, Operating Management System Framework for controlling risk and delivering high performance in the oil and gas industry, International Association of Oil & Gas Producers, June 2014. Global Standards
Closure Bolting

Closure Bolting

Definition(s)

Closure Bolting

Bolting used to assemble or join wellbore pressure-containing parts, including end and outlet connections.
  • NOTE: Examples of closure bolting include flange bolting, bonnet bolting, end connection bolting on BOPs, ram door bolting, and hub clamp bolting.
Source: API Specification 16A, Specification for Drill-through Equipment, Fourth Edition, April 2017. Global Standards  

Closure Bolting

Bolting used to assemble or join wellbore pressure-containing parts including end and outlet connections.
  • NOTE: Examples: flange bolting, bonnet bolting, bolting on end connection on BOPs, ram door bolting, hub clamp bolting.
Source: API STANDARD 16AR, Standard for Repair and Remanufacture of Drill-through Equipment, First Edition, April 2017. Global Standards

Closure Bolting

Threaded fastener used to assemble well-bore pressure-containing parts or join end or outlet connections.
  • EXAMPLES Studs, nuts, bolts and capscrews.
Source: API SPEC 6A, Specification for Wellhead and Christmas Tree Equipment, Twentieth Edition, October 2010 (Addendum November 2012). Global Standards
Clamp Hub

Clamp Hub

Definition(s)

Clamp Hub

Protruding rim with an external angled shoulder and a sealing mechanism used to join pressure-containing equipment. Source: API SPEC 6A, Specification for Wellhead and Christmas Tree Equipment, Twentieth Edition, October 2010 (Addendum November 2012). Global Standards
Choke Trim

Choke Trim

Definition(s)

Choke Trim

Pressure-controlling choke component, including choke beans, used to control or regulate the flow of fluids. Source: API SPEC 6A, Specification for Wellhead and Christmas Tree Equipment, Twentieth Edition, October 2010 (Addendum November 2012). Global Standards
Choke Bean (Flow Bean)

Choke Bean (Flow Bean)

Definition(s)

Choke Bean (Flow Bean)

Replaceable orifice part used in positive chokes to control flow rate. Source: API SPEC 6A, Specification for Wellhead and Christmas Tree Equipment, Twentieth Edition, October 2010 (Addendum November 2012). Global Standards
Chemical Analysis

Chemical Analysis

Definition(s)

Chemical Analysis

Determination of the chemical composition of material. Source: API Specification 16A, Specification for Drill-through Equipment, Fourth Edition, April 2017. Global Standards Source: API STANDARD 16AR, Standard for Repair and Remanufacture of Drill-through Equipment, First Edition, April 2017. Global Standards Source: API SPEC 6A, Specification for Wellhead and Christmas Tree Equipment, Twentieth Edition, October 2010 (Addendum November 2012). Global Standards Source: API SPEC 16A, Specification for Drill-through Equipment, Third Edition, June 2004 (Errata/Supplement November 2004). Global Standards Source: API SPEC 16C, Specification for Choke and Kill Systems, First Edition, January 1993 (Reaffirmed 2001). Global Standards Source: API SPEC 16RCD, Specification for Drill Through Equipment—Rotating Control Devices, Upstream Segment, First Edition, February 2005. Global Standards
Check Valve

Check Valve

Definition(s)

Check Valve

Valve that permits fluid to flow freely in one direction and contains a mechanism to automatically prevent flow in the other direction. Source: API SPEC 6A, Specification for Wellhead and Christmas Tree Equipment, Twentieth Edition, October 2010 (Addendum November 2012). Global Standards  

Check Valve

A valve that allows flow through it in one direction only. 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  

Check Valve

Device designed to prevent flow in one direction. 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  

Check Valve

A valve that allows flow in one direction only. 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
Certificate Of Conformance

Certificate Of Conformance

Definition(s)

Certificate Of Conformance

Document in which the manufacturer certifies that the assembly or part is in conformance to the mentioned standard(s), specifications, and guidelines in accordance with the original product definition. Source: API Specification 16A, Specification for Drill-through Equipment, Fourth Edition, April 2017. Global Standards  

Certificate Of Conformance

Document in which the manufacturer, remanufacturer, or technical authority certifies that the assembly or part is in conformance to the mentioned standard(s), specifications, and guidelines in accordance with the original or current product definition (CPD). Source: API STANDARD 16AR, Standard for Repair and Remanufacture of Drill-through Equipment, First Edition, April 2017. Global Standards

Certificate Of Conformance

Document certifying that the repaired/remanufactured equipment and all of its component parts meet the requirements of the original product definition. Source: API SPEC 6A, Specification for Wellhead and Christmas Tree Equipment, Twentieth Edition, October 2010 (Addendum November 2012). Global Standards
Certificate Of Compliance

Certificate Of Compliance

Definition(s)

Certificate Of Compliance

Document containing the statement by the manufacturer, or repairer/remanufacturer certifying that the equipment, repair, rework or remanufacture meets the requirements of this International Standard. Source: API SPEC 6A, Specification for Wellhead and Christmas Tree Equipment, Twentieth Edition, October 2010 (Addendum November 2012). Global Standards
Casting, Noun

Casting, Noun

Definition(s)

Casting, (noun)

Object at or near finished shape obtained by solidification of a molten metal in a mold.

Source: API Specification 16A, Specification for Drill-through Equipment, Fourth Edition, April 2017. Global Standards

Source: API STANDARD 16AR, Standard for Repair and Remanufacture of Drill-through Equipment, First Edition, April 2017. Global Standards

Casting, Noun

Object at or near finished shape obtained by solidification of a fluid substance in a mould.
  • NOTE: HIP components are not considered to be a casting.
Source: API SPEC 6A, Specification for Wellhead and Christmas Tree Equipment, Twentieth Edition, October 2010 (Addendum November 2012). Global Standards  

Casting, Noun

Object at or near finished shape obtained by solidification of a substance in a mould. Source: API SPEC 16A, Specification for Drill-through Equipment, Third Edition, June 2004 (Errata/Supplement November 2004). Global Standards
Casing-Head Spool

Casing-Head Spool

Definition(s)

Casing-Head Spool

Equipment attached to another casing head, which serves to suspend and seal a secondary casing string. Source: API SPEC 6A, Specification for Wellhead and Christmas Tree Equipment, Twentieth Edition, October 2010 (Addendum November 2012). Global Standards
Casing-Head Housing

Casing-Head Housing

Definition(s)

Casing-Head Housing

Equipment attached to the uppermost end of the surface casing, which serves to suspend and seal a casing string. Source: API SPEC 6A, Specification for Wellhead and Christmas Tree Equipment, Twentieth Edition, October 2010 (Addendum November 2012). Global Standards
Casing Hanger Mandrel

Casing Hanger Mandrel

Definition(s)

Casing Hanger Mandrel

Mechanism used to support a casing string in a casing head by means of a male or female thread attached to the casing. Source: API SPEC 6A, Specification for Wellhead and Christmas Tree Equipment, Twentieth Edition, October 2010 (Addendum November 2012). Global Standards
Bullplug

Bullplug

Definition(s)

Bullplug

Pressure-containing closure for a female-threaded end or outlet connection, which may have an internal counterbore and/or test port. Source: API SPEC 6A, Specification for Wellhead and Christmas Tree Equipment, Twentieth Edition, October 2010 (Addendum November 2012). Global Standards
Bottom Casing Pack-Off

Bottom Casing Pack-Off

Definition(s)

Bottom Casing Pack-Off

Mechanism that seals off annular pressure between the outside diameter of a suspended tubular member or hanger and the inside diameter of the spool or tubing-head adapter placed over the suspended tubular or hanger. Source: API SPEC 6A, Specification for Wellhead and Christmas Tree Equipment, Twentieth Edition, October 2010 (Addendum November 2012). Global Standards
Bonnet

Bonnet

Definition(s)

Bonnet

Pressure-containing closure for a body, other than an end or outlet connection. Source: API SPEC 6A, Specification for Wellhead and Christmas Tree Equipment, Twentieth Edition, October 2010 (Addendum November 2012). Global Standards  

Bonnet

A pressure containing closure for a body, other than an API end or outlet connection. Source: API SPEC 16C, Specification for Choke and Kill Systems, First Edition, January 1993 (Reaffirmed 2001). Global Standards
Body

Body

Definition(s)

Body

Portion of equipment between end connections, with or without internal parts, that contains wellbore pressure. Source: API Specification 16A, Specification for Drill-through Equipment, Fourth Edition, April 2017. Global Standards  

Body

Any portion of equipment between end connections, with or without internal parts, that contains wellbore pressure.

Source: API STANDARD 16AR, Standard for Repair and Remanufacture of Drill-through Equipment, First Edition, April 2017. Global Standards

Body

Any portion of wellhead and christmas tree equipment between end connections, with or without internal parts, which contains well-bore pressure. Source: API SPEC 6A, Specification for Wellhead and Christmas Tree Equipment, Twentieth Edition, October 2010 (Addendum November 2012). Global Standards  

Body

Any portion of equipment between end connections, with or without internal parts, which contains wellbore pressure. Source: API SPEC 16A, Specification for Drill-through Equipment, Third Edition, June 2004 (Errata/Supplement November 2004). Global Standards  

Body

Any portion of API equipment between end connections, with or without internal parts, which contains well bore pressure. Source: API SPEC 16C, Specification for Choke and Kill Systems, First Edition, January 1993 (Reaffirmed 2001). Global Standards  

Body

Any portion of equipment between end connections, with or without internal parts, which contains wellbore pressure. Source: API SPEC 16RCD, Specification for Drill Through Equipment—Rotating Control Devices, Upstream Segment, First Edition, February 2005. Global Standards
Blind Flange

Blind Flange

Definition(s)

Blind Flange

Flange with no centre bore, used to close off completely a flanged end or outlet connection. Source: API SPEC 6A, Specification for Wellhead and Christmas Tree Equipment, Twentieth Edition, October 2010 (Addendum November 2012). Global Standards
Back-Pressure Valve (BPV)

Back-Pressure Valve (BPV)

Definition(s)

Back-Pressure Valve

Unidirectional or bidirectional check valve that is installed through the christmas tree, into the tubing hanger, and prevents well fluids from flowing out of the well. Source: API SPEC 6A, Specification for Wellhead and Christmas Tree Equipment, Twentieth Edition, October 2010 (Addendum November 2012). Global Standards  

Back-Pressure Valve

A flow control valve to provide backflow control when running or pulling a string. Source: API SPEC 6A, Specification for Wellhead and Christmas Tree Equipment, Twentieth Edition, October 2010 (Addendum November 2012). Global Standards
As-Shipped Condition

As-Shipped Condition

Definition(s)

As-Shipped Condition

Condition of the product or equipment when it is ready for shipment. Source: API SPEC 6A, Specification for Wellhead and Christmas Tree Equipment, Twentieth Edition, October 2010 (Addendum November 2012). Global Standards Source: API SPEC 16C, Specification for Choke and Kill Systems, First Edition, January 1993 (Reaffirmed 2001). Global Standards
Annular Pack-Off

Annular Pack-Off

Definition(s)

Annular Pack-Off

Mechanism that seals off annular pressure between the outside diameter of a suspended tubular member or hanger and the inside diameter of the head or spool through which the tubular member passes or hanger is suspended. Source: API SPEC 6A, Specification for Wellhead and Christmas Tree Equipment, Twentieth Edition, October 2010 (Addendum November 2012). Global Standards  
Adapter

Adapter

Definition(s)

Adapter

Pressure-containing piece of equipment having end connections of different nominal sizes and/or pressure ratings, used to connect other pieces of equipment of different nominal sizes and/or pressure ratings. Source: API STANDARD 16AR, Standard for Repair and Remanufacture of Drill-through Equipment, First Edition, April 2017. Global Standards Source: API Specification 16A, Specification for Drill-through Equipment, Fourth Edition, April 2017. Global Standards Source: API SPEC 6A, Specification for Wellhead and Christmas Tree Equipment, Twentieth Edition, October 2010 (Addendum November 2012). Global Standards  

Adapter

Pressure-containing piece of equipment having end connections of different nominal size designation and/or pressure rating. Source: API SPEC 16A, Specification for Drill-through Equipment, Third Edition, June 2004 (Errata/Supplement November 2004). Global Standards
Accessible Wetted Surface

Accessible Wetted Surface

Definition(s)

Accessible Wetted Surface

Wetted surface for purposes of non-destructive examination that can be viewed by direct line of sight. NOTE This excludes test ports, control line ports, lockdown screw holes and other penetrations of these types. Source: API SPEC 6A, Specification for Wellhead and Christmas Tree Equipment, Twentieth Edition, October 2010 (Addendum November 2012). Global Standards  

Accessible Wetted Service

Specified limits of acceptability applied to process, service, or product characteristics . Source: API SPEC 16C, Specification for Choke and Kill Systems, First Edition, January 1993 (Reaffirmed 2001). Global Standards
WPQ

WPQ

Definition(s)

WPQ

Welder performance qualification. Source: API SPEC 5DP, Specification for Drill Pipe, First Edition, August 2009. Global Standards Source: API SPEC 6A, Specification for Wellhead and Christmas Tree Equipment, Twentieth Edition, October 2010 (Addendum November 2012). Global Standards
RSC

RSC

Definition(s)

RSC

Rotary shouldered connection. Source: API SPEC 5DP, Specification for Drill Pipe, First Edition, August 2009. Global Standards