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Keywords: stress relief feature
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Proceedings Papers

Paper presented at the IADC/SPE International Drilling Conference and Exhibition, March 3–5, 2020
Paper Number: SPE-199602-MS
... tested over a broad range of IDs. Finite Element Analysis (FEA) was used to quantify the difference in fatigue life between connections with stress relief features versus without stress relief features. Additionally, calculations were performed to understand the reduction in the capacity of the...
Proceedings Papers

Paper presented at the SPE/IADC Drilling Conference and Exhibition, March 14–16, 2017
Paper Number: SPE-184680-MS
... different thread roots of these connections. Connections with and without stress relief features were analyzed. A methodology was developed to integrate the effects of stress concentration caused by a pit into the stresses obtained from FEA analysis. It was found that the stresses in many thread roots...
Proceedings Papers

Paper presented at the IADC/SPE Drilling Conference and Exhibition, February 2–4, 2010
Paper Number: SPE-128931-MS
... Table 1 CFI fatigue performance values for different NC46 stress relief feature geometries. Figure A2 6-5/8 REG 8" × 2-13/16" rotary shouldered connection critical stress areas: Seal area, 3/4" from shoulder in pin, 3/8" from shoulder in box. Figure 12 Contact stresses at...
Proceedings Papers

Paper presented at the IADC/SPE Drilling Conference, March 4–6, 2008
Paper Number: SPE-112105-MS
... performance. Using finite element analysis simulation, specific connections are modeled under cyclic loading conditions to produce CFI values. By accounting for variables that impact fatigue, such as connection features, material properties, stress relief features, applied make-up torque, and loading...
Proceedings Papers

Paper presented at the IADC/SPE Drilling Conference, February 21–23, 2006
Paper Number: SPE-98992-MS
... Abstract The benefit of stress relief features (SRF's) on heavy weight drill pipe (HWDP) has often been questioned. Much more may be at stake than the cost of adding stress relief features and the impact cutting stress relief grooves has on connection refacing and recuts. The fatigue benefits...
Proceedings Papers

Paper presented at the IADC/SPE Drilling Conference, March 3–6, 1998
Paper Number: SPE-39325-MS
... string management stress relief feature operator manufacturer drill pipe selection rental company specification drill string ew Society of Petroleum Engineers lADC/SPE 39325 Drill String Management to Reduce Drilling Risks M.A. Summers,* PetrEX Intl. Inc., and S.R. Crabtree, Technical and...
Proceedings Papers

Paper presented at the SPE/IADC Drilling Conference, March 15–18, 1987
Paper Number: SPE-16072-MS
... stress relief feature drill collar failure runout area bottom hole assembly tool joint taper information drill collar connection anadarko basin drill string failure upstream oil & gas drillstring design strength ratio SPE/IADC SPE/IADC 16072 A Contractor's History of Drillstring...

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