Well network optimization of Daqing oil production two plant is remarkable
Chinese January 2nd oil network news reporter was informed that the two oil production plant of Daqing oilfield in the south block of five layers and well pattern optimization to see better results. After adjustment, the density of the water flooding well pattern is increased by 5.6 wells per square kilometer compared with that before adjustment. The working well density of Saertu and Portuguese high rise departments increased 2 wells and 8.5 wells per square kilometer respectively, and the control degree of water drive increased to 90%.
In recent years, as the problem of evolution to solve three well network encryption adjustment after mode and current well network exploitation of large span, complex relationship between injection and production wells, two oil production plant in the south of five blocks to carry out layers and well pattern optimization, on the water flooding layers were developed to optimize and adjust.
This factory 4 sets of water flooding well network is Caisa Pu reservoir, has good cohesive relations between wells, mutual complement, different pattern mining have different emphases. The technicians combined with the supplementary drilling Nii subdivided the strata vertically, the mining span reduced from 243 meters to 130 meters, and the mining objects were subdivided into the high permeability layer and the low permeability layer, and realized the transformation of a set of multi well pattern development to two sets of strata and 4 well pattern development.
After adjustment, the utilization ratio of thin and poor oil layers has been greatly improved. The utilization ratio of Saertu low permeability layer is 7.5 percentage points higher than that before adjustment, and the utilization ratio of Portuguese high and low permeability layer is higher than that of adjustment 6.4 percentage points before adjustment.
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