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Keywords: hydrate layer
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Proceedings Papers

Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-002
... properties, and can effectively avoid the decomposition of hydrates during cementing construction. INTRODUCTION Although marine oil and gas resources are plentiful, the low temperature and high pressure in deep water areas can cause hydrate layers to form on the shallow layers of the seafloor (Armstrong...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-1168
... Abstract A low temperature curable resin gelling system was developed to meet the requirements of deep water shallow hydrate layer cementing. The test shows that the system has obvious characteristics of right-angle thickening at 20°C ~ 40°C, and the compressive strength at low temperature...
Proceedings Papers

Paper presented at the The Eighteenth International Offshore and Polar Engineering Conference, July 6–11, 2008
Paper Number: ISOPE-I-08-399
... ABSTRACT The Messoyakha Gas Field is located in Siberian permafrost. The field has been described as a free gas zone, overlaid by hydrate layer and underlain by an aquifer of unknown strength. The field was put on production in 1970 and has produced intermittently since then. Some...
Proceedings Papers

Paper presented at the The Sixteenth International Offshore and Polar Engineering Conference, May 28–June 2, 2006
Paper Number: ISOPE-I-06-173
... area fall in the range of 2 degrees to 5 degrees. Calculations show the possibility of seafloor failures at Blake Ridge even for slope angles of 2 degrees depending on the thickness of the hydrate layer. This is consistent with reported seafloor slope failures at the Blake Ridge. A large geographical...
Proceedings Papers

Paper presented at the The Fifteenth International Offshore and Polar Engineering Conference, June 19–24, 2005
Paper Number: ISOPE-I-05-055
... and the subsea sediment (Kvenvolden, 1999). To develop the method for commercially producing natural gases from methane hydrate layers, the environmental and safety issues, which are of particular importance, should be first clarified. In the case of carbon dioxide hydrate, the disposal of global warming gases...
Proceedings Papers

Paper presented at the The Eleventh International Offshore and Polar Engineering Conference, June 17–22, 2001
Paper Number: ISOPE-I-01-076
... dioxide to the liquid droplets. We have presented a theoretical approach for estimating hydrate formation on the surface of a cold carbon dioxide bail sinking through seawater, and the subsequent formation of ice on the hydrate layer. The hydrate layer will be very thin and has no effect on the later...
Proceedings Papers

Paper presented at the The Eighth International Offshore and Polar Engineering Conference, May 24–29, 1998
Paper Number: ISOPE-I-98-012
..., 1992), heat transfer (Gumerov, 1991, 1992), and the state of the hydrate layer such as "mobile" (Topham, 1984), or "snow-like" (Gumerov, 1991), and "ice-like" (Nigmatulin et al, 1991). reaction liquid hydrate fonnation concentration experiment gumerov collapse time gas hydrate hydrate...
Proceedings Papers

Paper presented at the The Seventh International Offshore and Polar Engineering Conference, May 25–30, 1997
Paper Number: ISOPE-I-97-019
... If a multiphase subsea pipeline has to shut-in at high pressure, conditions may after some time be favorable for hydrate formation. A thin hydrate layer is then formed on the oil/water interphase. However, addition of a low dosage hydrate inhibitor to avoid problems may result in a plugged...
Proceedings Papers

Paper presented at the The Fifth International Offshore and Polar Engineering Conference, June 11–16, 1995
Paper Number: ISOPE-I-95-038
... and water is examined in a transparent test section at low pressure. The experiments conducted have shown that the formation of hydrates starts on the pipe wall. For certain flow condition~ the whole perimeter of the pipe wall is covered by hydrates and a solid hydrate layer is achieved. The thickness...
Proceedings Papers

Paper presented at the The Fourth International Offshore and Polar Engineering Conference, April 10–15, 1994
Paper Number: ISOPE-I-94-048
... peter eng ezo university gas hydrate methane hydrate zone hydrate formation porous media water region impermeation interface upstream oil & gas concentration flow assurance methane concentration profile diffusion gas storage equation hydrate layer hydrate Proceedings...

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