Static and dynamic absorption of nourishment used in stratal microflora activation on quartzite sand

Key words:  MEOR  nourishment  quartzite sand  absorption

Abstract:

In order to determine the exhaustion of nourishment components applied in microbial enhanced oil recovery ( ME-OR)，the static and dynamic absorption of the conventional nourishment components used in stratal microflora activation (glucose, potassium nitrate and potassium dihydrogen phosphate) on quartzite sand were studied by methods of dipping in and mass balance under simulative formation conditions. The results show that there is little difference between static absorption power of individual component and its dynamic holdup. Among the three components, the glucose1 s static absorption power and dynamic holdup are maximal, reaching 8. 5 x 10"4 and 8. 9 x 10 ~4 respectively, whereas, the absorption power and dynamic holdup of potassium nitrate and that of potassium dihydrogen phosphate are all very little, only about 1 x 10 And in the dynamic absorption experiments, individual component concentration in effluent liquid is approach to that in injecting liquid when the nourishment volume injected reaches 1.5 times of porosity volume( KP). Its concentration in effluent liquid is close to 0 after shifting to water flooding about 2 V?，which suggested that dynamic absorption of the three components on sand core is slight.