000			02155nab a2200205 4500
005			20260520001751.0
008			260224s2009 xxu
245	0	0	_aLaboratory study on activating indigenous microorganisms to enhance oil recovery in Shengli Oilfield
260			_a _b _cmayo 2009
270			_a08/06/2010 ; 07/06/2010
300			_a4 p. ; 42-46
520			_aTranscripción del resumen del autor. Microbial enhanced oil recovery (MEOR) offers an economic alternative to enhanced oil recovery (EOR). In accordance to the source of the microorganisms used, microbial enhanced oil recovery can be categorized into two types: injected exogenous microorganisms or utilized indigenous microorganisms for enhanced oil recovery. Indigenous microorganisms for MEOR have greater advantages compared to injected microorganisms. For example, this technology does not need additional injection instruments for in situ inoculation and the indigenous microorganisms adapt, grow, and breed more easily in the oil reservoir. Laboratory studies show the existence of some species of indigenous microorganisms (mainly bacteria) in crude oil and formation water of S12 block in Shengli Oilfield, such as hydrocarbon degrading bacteria (HDB), denitrifying bacteria (DNB), methane producing bacteria (MPB), sulfate reducing bacteria (SRB), iron bacteria (IB), sulfur bacteria (SB), and total growth bacteria (TGB). These indigenous bacteria are the objective of investigations for the MEOR. The results of the chemical analyses, bacteriological analyses of the crude oil and water samples, and the growth and physical simulation experiments are presented. The results show that the indigenous bacteria beneficial to MEOR can be selectively stimulated by nutrient injection while the detrimental bacteria can be restricted to some extent, enabling oil recovery to be enhanced by 9.14% after the first waterflooding.
581			_a1-2
773	0		_tJournal of Petroleum Science & Engineering _g66
942			_cARTICULO
100	1		_aBao, Mutai _942200
100	1		_aKong, Xiangping _942201
100	1		_aJiang, Guancheng _942202
999			_c170753 _d170753