Gullfaks

Field data obtained from three oil producing wells on the Gullfaks field correlated with H2S production profiles obtained using the hiofilm model but could not be explained by the mixing zone model. 

Oils The n-alkane series Cg-C, toluene and cyclohexane were purchased from BDH, Poole, UK, each with a stated purity of 99% reagents were used as received. Crude oil samples were obtained from two North Sea fields one located in the Norwegian sector and the other from the UK sector. Stock tank oil from the Gullfaks field was supplied by Statoil, Norway and the other stock tank oil from an undisclosed source. Both crude oils are derived from sandstone formations with reservoir temperatures of 70° and 101°C respectively. 

TOLUENE CYCLO- HEXANE GULLFAKS CRUDE NINIAN CRUDE TOLUENE CYCLO- HEXANE GULLFAKS CRUDE NINIAN CRUDE... 

Figure 8. Phase inversion temperature variation for decane/Gullfaks crude blends...

The authors wish to thank Tom Dreyer and Eirik Graue for providing data concerning calcite cementation in the Brage and Gullfaks Fields. The manuscript was also improved by the comments of Niek Molenaar, Sadoon Morad and Karl Ramseyer. 

Knudsen, K. Meisingset, K. K. 1991. Evaporative fractionation effects for the oils in the Gullfaks South area. In Manning, D. (ed.) Organic Geochemistry Advances and Applications in Energy and the Natural Environment. Manchester University Press, 162-165. 

The petroleum population 1 has not been modelled in this study and the fill-spill system from the south, terminating in the Gullfaks field, is maintained. The supposed source area for this population is the North Viking Graben (Thomas et al. 1985 Di Primio et al. 1998). The concluding filling directions are indicated in Figure 11. 

Horstad, I. et al. 1990. Degradation and maturity controls on oil field petroleum column heterogeneity in the Gullfaks field, Norwegian North Sea. Organic Geochemistry, 16, 497-510. 

Gullfaks C is an oil platform on the Gullfaks field in the North Sea. The frame of the platform was built by Norwegian contractors, with a Gondeep concrete substructure... 

So far we have looked at conditions around gas blowouts at Snorre A in November 2004 and Gullfaks C in 2010 - that is, the sequence of events and analysis of causes and actions taken afterward. Now it is time to discuss whether the incident on Snorre A actually has relevance to what happened at Gullfaks G. 

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