transcript
- Slide 1
- ADAPTED PRESENTATION Date: 24 November, 2009 (Week 48)
Location: PCSB Kerteh HQ Iain Rei Technical Director
- Slide 2
- Parties Operator (OC): Petronas Carigali Sdn. Bhd. Service
Provider (SP): Geowell Sdn. Bhd. Wire Supplier (WS): Wilco OFS Pte.
Ltd. Location: Dulang, PMO Scope of Work SP to provide sand-bailing
services WS to provide super-duplex stainless steel Zeron 100
HS
- Slide 3
- Timeline First contact: Week 40 (Susp. wire thinning) KSB
Visit: Week 41 (Wire inspection) Second Contact: Week 42 (Susp.
Inconsistent OD) KSB Visit: Week 43 (Wire inspection) Wire
replacement: Week 43 (Inconclusive) Official reply: Week 45 (Mfg.
Tolerance) Third Contact: Week 47 (Susp. lower MBL; surface
quality; plastic behavior) KSB Visit: Week 48 (now)
- Slide 4
- First used in Dulang: 2003 SP: Dimension Bid Sdn. Bhd. Current
countries: 6 Malaysia, Indonesia, Vietnam, Thailand, Myanmar,
Turkmenistan Current mean per annum usage: 60 reels Largest
end-user: Petronas Carigali Largest single-user: Chevron Thailand
Keywords: high breaking load, quality, consistency, support,
service, stockist, fast
- Slide 5
- Slide 6
- First issue: Wire thinning Restatement: wire is surface
thinning inexplicably causing disruption in service Premise: Wire
was said to be unused and new from reel Wire was of poor surface
quality Conclusion: Wire was found to be used Wire was found to be
significantly stressed mechanically Link to report from
UKreport
- Slide 7
- Slide 8
- Second issue: Inconsistent OD Restatement: wire OD is
inconsistently thick or thin, resulting in uncertainty in quality
that could lead to NPT Premise: Wire is said to be new Wire OD was
changing rapidly during spooling Operator/helper detected
accurately using hands on moving wire from supply to usage reel
Conclusion: Wire is new Wire OD seemed to be changing if detected
by hand Wire was replaced Subsequent findings from Principal show
that OD was fluctuating within normal manufacturing limits of
0.001findings
- Slide 9
- Our findings On 23 Nov., 2009 we performed a series of
measurements on a reel that is supposedly problematic with an
undulating OD. Using an electronic caliper provided by Geowell, we
conducted a series of measurements of the OD of the wire The result
is an OD measurement of 0.1080.00045 or a breaking load of
2,500lb25.21lb Error is within manufacturing error of 0.001
- Slide 10
- Third issue: Plastic behavior of Zeron100 wire Restatement:
wire elongates without recovering original length on tension;
indication of poor quality Premise: Break load testing methods are
normal and common; equipment used to test is approved Wire
elongates plastically without returning to original length under
load Conclusion: Tested wire had already broken at rope socket but
was undiscovered Subsequent elongation was due to wire being pulled
out of rope socket Cup-cone break-ends of wire indicates wire is of
good quality
- Slide 11
- What is elasticity and plasticity? Elasticity: when a material
behaves elastically like rubber On tension an elastic material will
elongate proportionately with tension On release of tension, an
elastic material will retain its original length Plasticity: when a
material does not behave elastically On tension beyond the elastic
limit, a material will begin to act plastically The subsequent
increase in tension will not result in proportional elongation of
length On release of tension, the material will not return to its
original length Plastic return of length x (plastic
elongation)
- Slide 12
- Slide 13
- Findings Most findings conclusively attest to the quality of
Zeron100 Thinning on recent sand bailing activity is not yet
examined and as yet outside of our scope of control Thinning is
akin to mechanical erosion whereas stress- corrosion-cracking is a
form of chemical erosion (or commonly called corrosion) Problems
that have occurred to not seem to be due to the quality of the
material or drawn wire
- Slide 14
- Recommendations Shorter runs-between-cut/test cycles Closer
surface inspection for scratches and large reductions in OD of wire
between run-cycles Wilco have been recommended to: Check for well
schematic Check for nipple or SSD profiles, kick-offs, deviation
angles, etc. that may lead to high forces of friction Request more
supporting information from OC and SP Provide continued support to
OC and SP
- Slide 15
- Example: Chevron wire thinning WI/125xx; max pull: 1,350lb; on
reel: 21,115'; 271 runs Mobilized in November 2007 25,000ft
ZERON100, 0.125 WI/125xx; max pull: 1,500lb; on reel: 18,545'; 258
runs Mobilized in March 2009 20,000ft ZERON100, 0.125
- Slide 16
- Example: Chevron wire thinning Chevron runs in the northern and
southern offshore fields 20,000+ runs per year Typical measured
depth of wells: 14,000-16,000ft Typical ordered slickline:
ZERON100, 0.125 Typical ordered length: 20,000ft Typical service
company junk length: Remaining on drum 1.5 x Well MD Shows great
belief in their program and our wire
- Slide 17
- Surface information Surface information History Work history
Technical information Technical information Material data sheets
Material data sheets Test certificates (private access) FirstLook
Calculator FirstLook Contact point http://www.wilcowirelines.com
http://www.wilcowirelines.com
- Slide 18
- Wilco Oilfield Services Pte. Ltd. (estd. 1982) No. 9, Kaki
Bukit Road 3, East Point Terrace, Singapore 417829 Tel:
+65(6)482-3666; Fax: +65(6)482-4782 Visit us at:
www.wilcowirelines.comwww.wilcowirelines.com Email us:
wilco@wilcowirelines.comwilco@wilcowirelines.com For a full
technical presentation, please contact us. Focus group: well &
production engineers