000			02120nab a2200205 4500
005			20260520000926.0
008			260224s2011 xxu
245	0	0	_aInhibition of structure I and II gas hydrates using synthetic and biological kinetic inhibitors
260			_a _b _cene./feb. 2011
270			_a01/04/2011 ; 01/04/2011
300			_a7 p. ; 17-23
520			_aTranscripción del resumen del autor. Use of low-dosage hydrate inhibitors in oil and gas field applications has been limited mainly because there are uncertainties related to their efficiency in preventing hydrate formation or because of environmental restrictions. Another question that normally arises in connection with use of low-dosage hydrate inhibitors is how they interact with other (than water) compounds normally found in oil and gas production pipelines. In this work three different experimental approaches to obtain hydrate induction times have been tested for structure I and II hydrate. All experiments were conducted in a high-pressure stirred cell. The results suggest that by adding small amounts of impurities to the hydrate-forming system a significant improvement in the reproducibility of induction times can be obtained. Adding salt and heptane to the system (as a simple model for seawater and a light crude) was found to increase the hydrate formation rate. Ice-structuring protein type III identified in the ocean pout, a biological inhibitor, was added to the various hydrate-forming systems to investigate its potential as a low-dosage hydrate inhibitor. As a reference, polyvinylcaprolactam, a well-known and quite effective kinetic inhibitor was used. The ice-structuring protein was found to outperform polyvinylcaprolactam for both structure I and structure II hydrate, suggesting that ice-structuring proteins hold a promising potential as environmentally friendly kinetic hydrate inhibitors.
581			_a1
773	0		_tEnergy & fuels _g25
942			_cARTICULO
100	1		_aJensen, Lars _944975
100	1		_aThomsen, Kaj _944976
100	1		_aVon Solms, Nicolas _944977
999			_c174359 _d174359