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Dill Stem Inspection Methode

This document outlines the inspection requirements and equipment for drillstring inspection according to category 4 of the TH Hill DS-1 standard. It includes requirements for visual tube inspection, outer diameter gauge inspection, ultrasonic wall thickness inspection, electromagnetic inspection, magnetic particle inspection of slips and upsets, ultrasonic inspection of slips and upsets, visual connection inspection, and dimensional inspection from points 1 through 3 requiring calipers, rules, and gauges. Standards and equipment such as reference standards, lights, ultrasonic instruments, and gauges must conform to specific chapters and editions outlined in the DS-1 standard.

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87 views2 pages

Dill Stem Inspection Methode

This document outlines the inspection requirements and equipment for drillstring inspection according to category 4 of the TH Hill DS-1 standard. It includes requirements for visual tube inspection, outer diameter gauge inspection, ultrasonic wall thickness inspection, electromagnetic inspection, magnetic particle inspection of slips and upsets, ultrasonic inspection of slips and upsets, visual connection inspection, and dimensional inspection from points 1 through 3 requiring calipers, rules, and gauges. Standards and equipment such as reference standards, lights, ultrasonic instruments, and gauges must conform to specific chapters and editions outlined in the DS-1 standard.

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nano
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DRILLSTRING INSPECTION

AS PER TH HILL DS-1 CATEGORY 4

a) VISUAL TUBE
- Paint Marker
- Pit Depth Gauge
- Ultrasonic Thickness Gauge
- Field Reference Standard
- Enough light to illuminate the entire assessable internal surface of the pipe

b) OD GAUGE TUBE INSPECTION


- Direct reading or “Go No Go” type Gauge

c) UT WALL THICKNESS INSPECTION


- Ultrasonic instrument – Pulse echo with digital display
- Field reference standard

d) ELECTROMAGNETIC 1 INSPECTION
- EMI unit equipped with a DC coil and designed to allow active longitudinal field inspection of
tube surface from the upset to up set. The unit shall generate a permanent record of the pipe
inspection and standardization.
- Field reference standard conforming to DS-1, Chapter 3, 3.3.7.2.b, Fourth Edition.

e) MPI SLIP/UPSET INSPECTION


- AC Yoke or AC Coil and if using the Wet Florescent Method
- DC Coil
- Black light intensity meter
- Black light source with minimum rating of 100 watts
- ASTM Centrifuge tube and stand

f) ULTRASONIC (UT) SLIP/UPSET INSPECTION (ADDITIONAL)


- Ultrasonic instruments for both scanning and prove-up shall be the pulse echo type with A-
Scan presentation and gain control increments no greater than 2 db. The unit shall have both
audible and visible alarm.
- Field reference standard conforming to DS-1, Chapter 3, 3.10.2.c.d, Fourth Edition.

g) VISUAL CONNECTION INSPECTION (API AND SIMILAR NON-PROPRIETARY


CONNECTIONS)
- 12 inch metal rule graduated in 1/64th increments
- A metal straight edge
- Hardened and ground profile gauge
- OD Calipers
- Lead gauge and Lead setting standard
h) DIMENSIONAL 1 THROUGH 3 INSPECTION
- Same requirements as point No.7 “Visual Connection Inspection”
- ID Calipers

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