000			01690nmc a2200241 4500
005			20260520005818.0
008			260224s xxu
082			_aCD I249 1 0013788
245	0	0	_aStanding experience in the construction and operation of highly productive wells and pipelines in the Cryolite Zone
270			_a12/09/06 ; 22/07/2003
300			_a6 p.
500			_aDisponible en CD en formato PDF
520			_aTranscripción del abstract original del autor: The paper analyses distinctive features in the construction and operation of highly productive wells and pipelines in the cryolite zone. It gives approximated analytical expressions to determine the time of the onset of melting, expansion rate of the melting zone and reverse freezing under thermal resistance of the borehole wall. The paper considers processes of thermal and thermal erosion impact on the permafrost during well drilling and methods of well protection from the effect of phase transitions in the permafrost during drilling and operation. In particular it gives the formula for selecting acceptable temperature of the drilling mud, which provides preservation of the permafrost. It also discusses the issues of hydrates control during operation of Arctic wells and the use of thermally insulated pipelines to prevent hydrating.
773			_g
942			_cCONGTP
100	1		_aErmilov, O.M. _922169
100	1		_aAnanenkov, A.G. _922170
110	2		_aInternational Gas Union, IGU _913105
111	2		_aWorld Gas Conference (22nd. : 2003 jun 1-5 : Tokyo) _922029
700	1		_aAnanenkov, A.G. _922170
710	2		_aInternational Gas Union, IGU _913105
999			_c149573 _d149573