Fatigue life improvement of drill collars through control of bore eccentricity

Engineering Failure Analysis

Volumn 6, Issue 5, 1999, Pages 301-319

  Knight, M J ^a   Brennan, F P ^a  

^a UNIVERSITY COLLEGE LONDON   (United Kingdom)

Author keywords

Bore eccentricity; Drill collar; Fatigue life; Stress analysis; Threaded connection

Indexed keywords

FAILURE ANALYSIS; FATIGUE TESTING; FINITE ELEMENT METHOD; MATHEMATICAL MODELS; STRAIN; STRESS ANALYSIS; STRESS CONCENTRATION;

BORE ECCENTRICITY; DRILL COLLARS;

DRILL PIPE;

DRILL PIPE; ECCENTRICITY; FATIGUE LIFE ANALYSIS; PIPE CONNECTOR; STRESS;

EID: 0032750579     PISSN: 13506307     EISSN: None     Source Type: Journal    
DOI: 10.1016/S1350-6307(98)00053-3     Document Type: Article

References (18)

1. Macdonald KA. Failure analysis of drillstring and bottom hole assembly components. Engineering Failure Analysis, 1994;1(2):91-117.
2. Hill TH, Seshadri PV, Durham KS. A unified approach to drillstem-failure prevention. SPE Drilling Engineering, 1992.
3. Lubinski A. Maximum permissible dog-legs in rotary boreholes. Journal of Petroleum Technology, 1961.
4. Hansford JE, Lubinski A. Cumulative fatigue damage of drill pipe in dog-legs. Journal of Petroleum Technology, 1966.
5. API Recommended Practise 7G (RP 7G). Recommended practise for drillstem design and operating limits, 15th ed. 1995.
6. Baryshnikov A, Schenato A, Ligrone A, Ferrara P. Optimisation of rotary-shouldered connection reliability and failure analysis. IADCSPE 27535, 1994.
7. API Specification 7 (Spec 7). Specification for rotary drilling equipment. 38th ed. 1994.
8. Topp DA. Fatigue of large diameter threaded connections, In: Dover WD, Haagensenm P, Dharamavasan S, Glinka G, editors. Cradley Heath: EMAS, 1988.
9. Tafreshi A, Dover WD. Stress analysis of drillstring threaded connections using the finite element method. Int J Fatigue 1993;15(5):429-38.
10. Hibbit, Karlson and Sorenson, Inc. ABAQUS user guide manual, v.5.6. 1996.
11. Structural Dynamics Research Corporation. I-DEAS user guide, Master Series v.1.3. 1994.
12. Young WC. Roarks formula for stress and strain. 6th ed. McGraw-Hill, 1989.
13. Shell Expro, Drillstring failure database, 1997.
14. Brennan FP. The use of approximate strain-life fatigue crack initiation predictions. Int J Fatigue 1994;16:351-6.
15. Boardman BE. Crack initiation fatigue-data, analysis, trends and estimations. Proceedings of SAE Fatigue Conference 1982;P-109:59-73.
16. Dowling NE, Brose WR, Wilson WK. Notched member fatigue life predictions by local strain approach. Fatigue under complex loading, SAE, 1977:55-84.
17. Metals handbook, properties and selection: iron, steels, and high performance alloys, vol. 1. 10th ed. ASM International, 1990.
18. Seeger T, Boller CHR. Materials data for cyclic loading, part B: low alloy steels. Elsevier, 1987.