Slug Catchers in Natural Gas Production - NTNU

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Karam – Slug Catchers in Natural Gas Production LIST OF TABLES Table 1: The different slug catcher characteristics of both the finger type and the vessel type (Contreras & Foucart, 2007) ................................................................................................ 37 Table 2: Data from the reservoir and the pipelines of the four different fields .................................. 38 Table 3: Data related to the wells and the slug catchers collected for the four different fields ......... 38 Page vi of viii
Karam – Slug Catchers in Natural Gas Production LIST OF FIGURES Figure 1: The six different flow patterns that form depending on the flow speed in the channel. (Aker Solution, 2011) ......................................................................................................................... 39 Figure 2: The slug formation process in three steps starting with the Kelvin-Helmholtz Wave Growth, then by a slug nose ingress and tail shedding to gas entrapment (Feesa, 2003) ...................... 40 Figure 3: The effect of pipeline inclination on slug formation (Feesa, 2003) ....................................... 40 Figure 4: Idealized slug unit showing all four different elements: the mixing zone, the slug body, the film and the bubble (Scott et al., 1989) .................................................................................... 41 Figure 5: Representation of the slug unit and unit length with both the slug and film zones (Marquez et al., 2009) ................................................................................................................................... 41 Figure 6: Flow map of a 20-in horizontal slug catcher showing the operational point (Sarica et al., 1990) ......................................................................................................................................... 42 Figure 7: Flow map of a 26-in horizontal slug catcher showing the operational point (Sarica et al., 1990) ......................................................................................................................................... 42 Figure 8: The appropriate design of a constrictor (Shell, 1998). ........................................................... 43 Figure 9: View of the inlet side of a multi-pipe slug catcher (Patel, 2007) ........................................... 44 Figure 10: View of the liquid header side of a multi-pipe slug catcher (Patel, 2007) ........................... 44 Figure 11: The bottle geometry of the slug catcher for Troll field in the Kollsnes processing plant (Shell, 1998) ............................................................................................................................ 45 Figure 12: A general view of the two slug catchers at the Kollsnes Processing plant (Klemp, 2011) .. 45 Figure 13: The different components of the Hammerfest processing plant of the Snøhvit field (Pettersen J. , 2011). ................................................................................................................ 46 Figure 14: Representation of the Storegga Slide (left) and the location of the field (right) (Bryna et al., 2005) ....................................................................................................................................... 46 Figure 15: A general Overview of one of the two multi-pipe slug catchers at Ormen Lange (Gupta, 2012) ....................................................................................................................................... 47 Figure 16: Setup of the HYSYS model (MEG injection was not included in this setup) ...................... 47 Figure 17: Elevation profile of the Ormen Lange big bore well retrieved from the HYSYS model..... 48 Figure 18: Elevation Profile of the Ormen Lange flowline (Christiansen, 2012 from Biørnstad, 2006) ................................................................................................................................................. 48 Page vii of viii
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Slug Catchers in Natural Gas Production - NTNU

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