... Abstract The mechanism of petroleum hydrocarbon degradation by the selected bacteria Brevibacillus brevis and Bacillus cereus is studied based on the metabolite analysis. The result shows that bio-oxidation processes, especially those called unconventional subterminal oxidation, terminal...

...) and polyacrylamide (PAM) crosslinked with polyethyleneimine (PEI) have been investigated. This PAtBA/PEI system was previously shown to be stable at temperatures up to 160°C, typical of those encountered in deep oil and gas reservoirs. However, the crosslinking mechanisms of this system at high temperatures have...

... tendencies will be mitigated to varying degrees by crossflow effects induced by the following physical mechanisms: (i) mass diffusion, (ii) dispersive mixing, (iii) viscous forces, and (iv) gravity forces [ 10 ]. All these factors are rate and process dependent, so that the effectiveness of a nearly miscible...

.... The Jatibarang Field primary recovery is only 16.2%, and the current reservoir pressure is as low as 500 psia. The reservoir performance shows the driving mechanism in this zone is very weak water influx. Therefore a Waterflood and/or EOR Program need to be evaluated to increase oil recovery. Based...

... calibrated rock properties for such work is described. Examples of such an approach are given from several fields in Sabah where a variety of production challenges are encountered. inversion oil recovery spe 84883 development well aquifer drive mechanism seismic inversion special seismic study...

... noor nazri talib spe 72125 reservoir bokor field enhanced recovery reduction meor upstream oil & gas sarawak spe 72125 mat ali hj salim emulsion mechanism microbial method microbe Overview of MEOR Technology Microbial Enhanced Oil Recovery (MEOR) is a technology using micro...

... on the establishment of production mechanisms and ultimately on the oil recovery are studied. The fully implicit formulation, which assumes all the reservoir parameters and operational parameters to be functions of all primary variables identified, makes it possible to focus on any parameter and investigate its...

... Abstract The mechanism how polyacrylamide (PAM) influences the properties of produced liquid were investigated by means of the measurements of microscopic properties of oil-water interface. The resluts show that the presence of PAM results in significant increases of membrane strength...

... Abstract Compositional simulation of miscible gas displacement at the reservoir scale is mostly undertaken neglecting physical dispersion mechanisms such as capillary pressures, molecular diffusion, dispersive mixing, etc. The necessity to use large grid block sizes implies that numerical...

... mechanism with lean gas injection have been confirmed by field data. The previous decline of oil productionhas been stopped and the oil rate is now stabilizing. The main monitoring challenge has been the control of gas cycling for most of the producers, particularly during periods of higher injection rates...