Abstract:

In the midlate development stage, well productivity declines gradually and water cut increases generally, as well as well production management is more difficult, a certain Oilfield in Northeast China is taken as an example, on the basis of bitumen chromatograph fingerprint of side wall coring, typical fingerprint parameters are selected, then, according to the principle of correlation between fingerprint parameters values of the oil from single pay zone and pay zones productivity, the math model is set up. The contribution rate of single pay zone to well head oil is calculated based on least square method, furthermore, the production adjustment proposal is put forward aimly. Practice indicates the effectiveness is apparent, the quantitative monitoring is realized to the single pay zone productivity in midlate development stage. The technology is of strong application, less investment, short period, accuracy and quickness, and it can be widely popularized

Key words: oilfield exploitation, reservoir productivity, sidewall coring, chromatograph fingerprint, quantitative monitoring