ISO 11961:2018 石油および天然ガス産業—鋼管 | ページ 6

3.1.1

bevel diameter

outer diameter of the sealing shoulder of a rotary shouldered connection

3.1.2

defect

imperfection of sufficient magnitude to warrant rejection of the product based on criteria defined in this document

[SOURCE:ISO 11960:2014, definition 4.1.12]

3.1.3

drill-pipe

drill-pipe body with weld-on tool joints

3.1.4

drill-pipe body

seamless pipe with upset ends

Note 1 to entry: See Figure B.1.

3.1.5

drill-pipe-body manufacturer

firm, company or corporation that operates facilities for making drill-pipe bodies and is responsible for compliance with the requirements of this document applicable to the drill-pipe body

Note 1 to entry: See 7.21.

3.1.6

drill-pipe manufacturer

firm, company or corporation responsible for compliance with all the applicable requirements of this document

Note 1 to entry: See 6.16.

3.1.7

drill-pipe torsion-strength ratio

torsion strength of the tool-joint connection divided by the drill-pipe-body torsion strength

3.1.8

drill-pipe weld neck

machined part of the drill-pipe comprising the tool-joint weld neck, the weld and the drill-pipe-body upset

Note 1 to entry: See Figure B.1.

3.1.9

elephant hide

wrinkled outside diameter surfaces of the drill-pipe body caused by the upsetting process

3.1.10

enhanced H₂S resistance

classification of drill pipe that includes Sulfide Stress Cracking testing as part of its qualification and quality control

3.1.11

essential variable

variable parameter in which a change affects the mechanical properties of the weld joint

3.1.12

gouge

elongated groove or cavity caused by mechanical removal of metal

3.1.13

hard banding

application of material onto tool joints to reduce external wear of the tool joint

Note 1 to entry: This is also known as hard facing.

3.1.14

hardness number

result from a single hardness impression

3.1.15

heat

heat of steel

metal produced by a single cycle of a batch-melting process

3.1.16

heat analysis

chemical analysis representative of a heat as reported by the metal producer

[SOURCE:ISO 11960:2014, definition 4.1.18]

3.1.17

imperfection

discontinuity in the product wall or on the product surface that can be detected by an NDE method included in this document

[SOURCE:ISO 11960:2014, definition 4.1.19, modified]

3.1.18

indication

evidence of a discontinuity that requires interpretation to determine its significance

3.1.19

inspection

process of measuring, examining, testing, gauging or otherwise comparing the product with the applicable requirements

3.1.20

label 1

dimensionless designation for the drill-pipe-body size that may be used when ordering

3.1.21

label 2

dimensionless designation for the drill-pipe-body mass per unit length that may be used when ordering

3.1.22

linear imperfection

imperfection that includes, but is not limited to, seams, laps, cracks, plug scores, cuts, gouges and elephant hide

Note 1 to entry: See API 5T1.

[SOURCE:ISO 11960:2004, definition 4.1.28, modified]

3.1.23

lot

definite quantity of product manufactured under conditions that are considered uniform for the attribute being inspected

3.1.24

lot size

number of units in a lot

3.1.25

manufacturer

maker of drill-pipe, drill-pipe body or tool joints

Note 1 to entry: The manufacturer can be the maker of one or more of the specified components, depending on context.

3.1.26

mean hardness number

result of averaging the hardness numbers for the single specimen or location being evaluated

3.1.27

non-essential variable

variable parameter in which a change may be made in the WPS without re-qualification

3.1.28

non-linear imperfection

imperfection that includes, but is not limited to, pits

Note 1 to entry: See API Std 5T1.

3.1.29

pipe body

seamless pipe excluding upset and upset-affected areas

Note 1 to entry: See Figure B.1.

3.1.30

procedure qualification record

PQR

written documentation stating an assessment that a specific WPS produces welds in accordance with the requirements of this document.

3.1.31

product

drill-pipe, drill-pipe body or tool joint

3.1.32

purchaser

party responsible for both the definition of requirements for a product order and for payment for that order

[SOURCE:ISO 11960:2014, definition 4.1.39]

3.1.33

quench crack

crack in steel resulting from stresses produced during the transformation from austenite to martensite

Note 1 to entry: This transformation is accompanied by an increase in volume.

[SOURCE:ISO 11960:2014, definition 4.1.40]

3.1.34

rotary shouldered connection

connection used on drill string elements which has tapered threads and sealing shoulders

3.1.35

rotary friction welding

solid state welding under compressive-force contact of work-pieces rotating relative to one another along a common axis to increase temperature and plastically displace material from the faying surfaces

Note 1 to entry: Either direct drive or inertia friction welding is acceptable.

3.1.36

sample

one or more units of product selected from a lot to represent that lot

3.1.37

seamless pipe

wrought steel tubular product made without a weld seam

Note 1 to entry: It is manufactured by hot working and, if necessary, by subsequently cold-working or heat-treating, or a combination of these operations, to produce the desired shape, dimensions and properties.

[SOURCE:ISO 11960:2014, definition 4.1.41, modified]

3.1.38

tool joint

forged or rolled steel component for drill-pipe designed to be welded to the drill-pipe body and having a rotary shouldered connection

3.1.39

tool-joint box

threaded connection on tool joints that has internal threads

3.1.40

tool-joint manufacturer

firm, company or corporation that operates facilities for making tool joints and is responsible for compliance with the requirements of this document applicable to the tool joint

Note 1 to entry: See 8.14.

3.1.41

tool-joint pin

threaded connection on tool joints that has external threads

3.1.42

upset ovality

difference between the largest and smallest diameter in a plane perpendicular to the axis of the upset

3.1.43

weld zone

zone comprising the weld line and the heat-affected areas on either side of the weld line caused by the friction welding and subsequent heat-treatment processes

3.1.44

welding machine and welding operator performance qualification

WPQ

written procedure used to demonstrate that a welding machine and welding operator combination has the capability to use the WPS to produce a weld meeting the requirements of this document

Note 1 to entry: It includes records from the qualification tests.

3.1.45

welding procedure specification

WPS

written procedure that provides instructions to the welding operator for making production welds in accordance with the requirements of this document

Note 1 to entry: It includes all essential variables and non-essential variables for friction welding of tool joints to drill-pipe body. A WPS applies to all those welds, of which each element has the same specified dimensions and chemistry, that are grouped according to a documented procedure that ensures a predictable response to weld-zone treatment for a particular grade.