TUBULAR GOODS STANDARDS SUB-COMMITTEE CASING WEAR WORK GROUP Summer Meeting Westminster, Colorado June 24, 2009.

TUBULAR GOODS STANDARDS SUB-COMMITTEECASING WEAR WORK GROUP

Summer Meeting

Westminster, Colorado

June 24, 2009

API 9 5/8” 53.5 ppf T-95 Casing Specimen

Proposed Tool Joint Spec

4.00” Long 4137M Steel Tool Joint

4.00” Long 4137M Steel Tool Joint with 3.75” Long 3/32” Thick Hardband

Historical Prospective

• Blasting Sand– Sieve Analysis

• Unknown

– Off Market• Silicosis Liability

– 1985

• Water Filtration Media– Sieve Analysis

• Unknown

– Off Market• Silicosis Liability

– 1998

#5 Unimin Granusil - Cleburne, TX

0.00

10.00

20.00

30.00

40.00

50.00

30 40 50 70 100 140 200 270 Pan

USA Sieve Analysis

Per

cen

t

T-Tex -- No Longer Available

Current Sand Abrasive

#1 Dry Unground Silica - Mill Creek, OK

0.00

10.00

20.00

30.00

40.00

50.00

30 40 50 70 100 140 200 270 Pan

USA Sieve Analysis

Per

cen

t

Hematite

• Needs more study– Sieve analysis– Hardness– Equivalent wear

• 7% sand = ??% Hematite

Specimen Surface Finish

Two Specimen Test Protocol“Field Ready – As Supplied”

Possible API Funding

• Study of wear of 9 5/8” T-95 by 4137M tool joint steel– Consistency– Reproducibility