CONTROL METHOD OF OIL POOL DEVELOPMENT Russian patent published in 2014 - IPC E21B43/20 

Abstract RU 2528185 C1

FIELD: oil and gas industry.

SUBSTANCE: method includes allocation of a pool area with wells intercoupled hydrodynamically, extraction of the product from producers with production rate analysis, injection of a displacement agent to injectors with definition of well interference contours and correction of the production rate for the producers. According to the invention production rate analysis and injection of a displacement agent to injectors is made on the basis of detected intercoupling with the respective injectors against their total production rate at actual operation at the allocated areas using archive databases from 1 year up to 20 years and current data for the whole optimisation period with increment of 1-3 months. By production rate control in the producers the volume of injection to the injectors is changed and redistributed considering impact of the respective producers and injectors. At that the total volume of injection is changed not more than per 10%. Regulation of the extraction modes from the producers includes increase in product extraction from wells with maintained or insignificantly increased water cut and reduction of extraction up to complete stoppage with fast product watering out. At that remaining reserves are worked out using the producing well stock with increase in total flow rate and reduction of total water cut of the product, and liquid movement flows are redistributed till the remaining reserves are worked out.

EFFECT: expanding application scope of the invention for different conditions and operation modes for injectors and producers as well as reducing material costs, water cut of the extracted product and increasing oil recovery factor.

4 dwg

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RU 2 528 185 C1

Authors

Bakirov Il'Shat Mukhametovich

Nasybullin Arslan Valer'Evich

Shutov Aleksandr Anatol'Evich

Antonov Oleg Gennad'Evich

Dates

2014-09-10Published

2013-06-24Filed