000			02101nmc a2200241 4500
005			20260520005819.0
008			260224s xxu
082			_aCD I249 1 0013788
245	0	0	_aEnhancing of gas recovery from low-pressure and tight formations
270			_a12/09/06 ; 22/07/2003
300			_a8 p.
500			_aDisponible en CD en formato PDF
520			_aTranscripción del abstract original del autor: At the final stage of gas reserves withdrawal there comes a stage when in the pool mostly lowpressure gas (under pressure below 5 MPa) remains. With the elastic water drive development, water intrusion into the gas pool results in trapping of a significant part of natural gas reserves. Recovery of low-pressure and trapped gas reserves from watered gas pools is a complicated scientifictechnological problem and requires significant additional investments for development and application of new technologies for their recovery and use. A significant part of these reserves can be ascribed to the difficult-to-recover category and accounts for 15 to 40% of initial reserves. This paper describes the mathematical simulation of the process of displacement of the trapped gas with nitrogen, injected below the gas-water contact level. In terms of physics, the nitrogen injection technology is based the creation of more favorable, as related to depletion drive, reservoir hydrodynamic and thermobaric conditions. These conditions enhance gas recovery thanks to displacing both trapped and free lowpressure gas. A part of gas reserves is also recovered under a higher formation pressure, the rate of further holes drowning is retarded and the period of the gas-producing enterprise viability is extended.
773			_g
942			_cCONGTP
100	1		_aGuzhov, N.A. _922210
100	1		_aTer-Sarkisov, R.M. _922211
110	2		_aInternational Gas Union, IGU _913105
111	2		_aWorld Gas Conference (22nd. : 2003 jun 1-5 : Tokyo) _922029
700	1		_aTer-Sarkisov, R.M. _922211
710	2		_aInternational Gas Union, IGU _913105
999			_c149608 _d149608