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Keywords: diameter
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Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, November 5–7, 2018
Paper Number: OTC-29167-MS
... variation of sea-ice concentration by ice type (and hence thickness) at the site, and distributions for floe diameter and floe velocity. During preliminary analyses, it was demonstrated that extreme sea-ice loads will be governed by the two thickest ice types, namely thick first-year ice with thicknesses...
Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, November 5–7, 2018
Paper Number: OTC-29158-MS
... achievable. iceberg impact sip iceberg cylinder concept newfoundland and labrador iceberg contact rate upstream oil & gas design load protection structure arctic technology conference technology conference iceberg protection structure eastern canada diameter layout iceberg impact...
Proceedings Papers

Paper presented at the Arctic Technology Conference, October 24–26, 2016
Paper Number: OTC-27324-MS
... ice). Previous work has focused on ice drilling and coring, and individual holes have required more than one drilling season. Our objective is to drill and complete a hole in approximately two weeks. Firn will be drilled using a conventional auger system at 177.8 mm diameter until impermeable ice is...
Proceedings Papers

Paper presented at the Arctic Technology Conference, October 24–26, 2016
Paper Number: OTC-27417-MS
... pipeline may need to release hydrocarbons to the environment. Further, since the industrial full-scale pipeline is large in diameter, fluid thermodynamics cannot be captured accurately in a small-scale, laboratory environment. Thus, a numerical simulation can provide a better understanding of pipeline...
Proceedings Papers

Paper presented at the Arctic Technology Conference, October 24–26, 2016
Paper Number: OTC-27458-MS
... iceberg diameter was less than approximately half the structure diameter. Upon finding considerable effects of iceberg model shape on wave induced motions, Lever et al. (1990a) extended their impact velocity probability statistics to include randomly varying iceberg shape. Lever et al. (1990b) conducted...
Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, March 23–25, 2015
Paper Number: OTC-25534-MS
... expand the work to examine the role of structure diameter on ice loading and pile-up height. Results are further compared to ISO 19906, with the objective of presenting concrete guidance for the current revision of that standard. Ice forces on upward-breaking cones as a function of structure slope...
Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, March 23–25, 2015
Paper Number: OTC-25588-MS
... tubing pressure, Do is pipe outside diameter, t is pipe thickness, and is Poisson s ratio. In the situation when this axial force behaves as the buckling (compressive force) force, the production tubing will see buckling stresses. Buckling will occur when the buckling force Pe exceeds the threshold...
Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, March 23–25, 2015
Paper Number: OTC-25536-MS
... modelling, taking into account the above water hull shape and non-linear effects in the wave. For droplet break-up empirical spray nozzle modelling appeared useful to derive mean droplet diameters and size distribution. The results from the calculation model seem realistic when comparing to the scarce...
Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, February 10–12, 2014
Paper Number: OTC-24548-MS
.... variation thickness concentration maximum load annual load reserves evaluation ice strength probabilistic method ice thickness kinetic energy iso 19906 upstream oil & gas ice load interaction strength characteristic load multi-year ice limit stress diameter penetration floe driving...
Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, February 10–12, 2014
Paper Number: OTC-24569-MS
... performed remotely from within 15 diameters off the pipeline axis for both buried and sub-sea pipelines ; without interference with the pipeline mode of operation. Outcome of the application of MTM technology is the information on potentially faulty sections causing elevated concentration of mechanical...
Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, December 3–5, 2012
Paper Number: OTC-23760-MS
... most difficult issue for the Beaufort Sea operations with respect to sidewall slumping, under-reaming of the counterbore diameter for the placement of a supporting caisson, low productivity rates, cost, and logistics (McKay et al., 1995; Stewart and Goldby, 1984). The counter bore sidewalls may be self...
Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, December 3–5, 2012
Paper Number: OTC-23788-MS
... keel grand bank offshore technology conference diameter subsea production equipment otc 23788 subsea structure subsea system installation upstream oil & gas jordaan design load protection structure impact load resistance conductor interaction OTC 23788 Impact Loads and...
Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, December 3–5, 2012
Paper Number: OTC-23783-MS
... study on the local buckling response of high strength plainpipelines was conducted. The influence of pipe diameter to wall thickness ratio(D/t of 40, 60 and 80), pipe segment length to diameter ratio (L/D of 3.5, 5, 7and 12), yield strength to tensile strength ratio (Y/T of 0.7, 0.8 and 0.9) andinitial...
Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, December 3–5, 2012
Paper Number: OTC-23778-MS
... case pc class rule timo rauti thruster classification calculation ice class software power train pc class diameter ice load rolls-royce oy ab propeller offshore technology conference load spectrum upstream oil & gas pc rule OTC 23778 Classification of the First Mechanical...
Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, February 7–9, 2011
Paper Number: OTC-22086-MS
... construction in the arctic. The current state of the art is defined by a review of recent commercial applications of HDD to pipeline construction. Details on completed projects defining feasibility limits with respect to length and pipe diameter are presented. Restrictions with respect to subsurface conditions...
Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, February 7–9, 2011
Paper Number: OTC-22087-MS
... construction is folded into a C-shape for ease of insertion. Obviously, this step is not needed in new construction or in a loose fit insertion as in the in situ rehabilitation of a cased crossing. This process can be utilized for the manufacture and deployment of any desired pipe diameter and MAOP with an...
Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, February 7–9, 2011
Paper Number: OTC-22088-MS
... arctic heating fuel pipeline (Figure 2). air temperature diameter offshore technology conference upheaval warm-up time trench construction calculation offshore pipeline natural warm-up time pip pipeline installation temperature technology conference pipeline temperature backfill...
Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, February 7–9, 2011
Paper Number: OTC-22159-MS
... structure diameter load resultant plane conical structure upstream oil & gas strength thickness ice load consideration subsea system diameter ice feature cone slope 45 offshore technology conference calculation sensitivity ralston method cone slope 30 otc 22159 OTC 22159...
Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, February 7–9, 2011
Paper Number: OTC-22143-MS
.... ice torque strength azimuth thruster pc rule formula ice factor diameter power train thickness rolls-royce oy ab azimuth thruster engineering timo rauti propeller offshore technology conference new pc rule calculation torque thruster OTC 22143 The Use of PC Ice Rules in Azimuth...

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