000			02035nab a2200277 4500
005			20260520000319.0
008			260224s2016 xxu ing
041			_aInglés
245	0	0	_aIdentification and calculation of transfer overpressure in the northern Qaidam Basin, northwest China
260			_a _b _cene. 2016
270			_a03/03/2016 ; 03/03/2016
300			_a16 p. ; 23-39
520			_aTranscripción del resumen del autor: The origin of the overpressure in the northern Qaidam Basin has not been clearly understood, which has caused some difficulties in hydrocarbon exploration. Using a compaction study, we applied a modified acoustic-velocity and effective-stress diagram to identify the overpressure transfer in the study area. This phenomenon has not been discussed in previous studies. For the present study, we approximately calculated the magnitude of the transfer overpressure and analyzed the cause of the overpressured aquifer at the crest of the anticline in the study area. Our study indicates that the effect of overpressure transfer is very distinct, and the largest contribution to the total overpressure is 57%. The main media of overpressure transfer include vertical faults and lateral conducting layers. The vertical faults can connect deep overpressured strata, and the lateral conducting layers can connect overpressured strata at the top and wing of the anticline. During anticline formation, the crest fractures, and then the overpressured water in the anticline wing flows into the fractured crest and forms the overpressure compartment that prevents the charging of deeper natural gas.
581			_a1
773	0		_tAAPG Bulletin _g100
942			_cARTICULO
100	1		_aFan, Changyu _955201
100	1		_aWang, Zhenliang _955202
100	1		_aWang, Aiguo _955203
100	1		_aFu, Suotang _955204
100	1		_aWang, Liqun _955205
100	1		_aZhang, Yongshu _955206
100	1		_aKong, Hongxi _955207
100	1		_aZhang, Xiao _955208
999			_c189467 _d189467