000			02115nab a2200277 4500
005			20260520003101.0
008			260224s2012 xxu ing
041			_aInglés
245	0	0	_aStudy of the Plugging of Oil Well Sand Control Area in a Polymer Flooding Region
260			_a _b _cmayo/jun. 2012
270			_a15/05/2013 ; 14/05/2013
300			_a8 p. ; 403-411
520			_aTraducción del resúmen del autor: The plugging of the oil well sand control area in a polymer flooding region was studied and the plugging substances were analyzed through UV-Vis spectrophotometer analysis, plasma emission spectrometry analysis, laser particle size analysis, X-Ray Diffractometer (XRD) analysis, microscopic observation, chromatograph-mass spectrometer, etc. It is inferred that the main reason for the plugging of the sand control area was the adsorption, gathering and bridging of PAM on the surface of the sand. The migration of the mineral fines from the stratum and the adsorption of the crude oil ingredients on the surface of the fines also result in plugging. An experimental study on the polymer degradation was performed and two types of plug removal agents, potassium persulfate and sodium thiosulfate, were selected and tested. It showed that potassium persulfate and sodium thiosulfate could degrade the plugging substances and recover core permeability effectively. Moreover, field application tests were conducted in Gudao oil field which showed the restoration of the performance of various wells. It also indicated that the injection pressure obviously decreased and liquid production per day increased greatly after application of the plug removal agents in the sand control area.
581			_a3
773	0		_tOil and Gas Science and Technology _g67
942			_cARTICULO
100	1		_aLiu, Dong _941646
100	1		_aLiu, Huiqing _942025
100	1		_aHou, Jian _942580
100	1		_aLi, Zhuo _953182
100	1		_aZhao, A-Zhen _953183
100	1		_aLi, Li _934560
100	1		_aZhou, Chengshi _953184
100	1		_aSun, Huili _953185
999			_c187692 _d187692