METHOD OF OIL POOL DEVELOPMENT Russian patent published in 2015 - IPC E21B43/26 G01V8/00 

FIELD: oil and gas industry.

SUBSTANCE: method includes primary hydraulic fracturing at wells, periodic determination of yield and repeated hydraulic fracturing when impact of the primary one is over. At that complex analysis is performed for dynamic pattern of K_la (light absorption coefficient) and volumes of produced oil before and upon primary hydraulic fracturing, sampling is made for the selected wells before and upon primary hydraulic fracturing, dewatering is carried out by centrifuge process and toluene solution is prepared. Thereafter optical study is performed with obtained data on optical density curve for the surveyed oil on emission wavelength. Correlation analysis is made for oil yield and dynamic pattern of K_la. Increase in K_la up to the average value for the facility means that in result of primary hydraulic fracturing recovery of new non-converted oil reserves is completed. When K_la is increased up to the average value for the facility (before hydraulic fracturing) then decision is taken to repeat hydraulic fracturing.

EFFECT: improved forecast precision at assigning the repeated hydraulic fracturing.

1 dwg