It will provide significant guide for oilfields, especially for those having high gas-oil ratio in western China developed by abundant associated gas or gas-injection miscible phase process.
It is one of the important means to cut down the operation cost and to improve the field economics by means of efficient and effective utilization of associated gas.
Among them, oilfield associated gas is carried out with crude oil in the process of production as hydrocarbons exist in form of both gas phase and fluid phase.
Abstract: the associated gas in the west end of the Ziliujing structure has been mined for several years, but it is necessary to exploit further.
So, reinjection of the associated gas is a method of EOR worthy for exploring.
So, the initial water flooding can't suitable to it. In order to utilize abundant gas resources, the feasibility study of injecting associated gas drive to this area is necessary.
In 2015, Special Oil Development Company of Liaohe Oilfield started the project of separating associated gas with closing transportation.
Otherwise, a large amount of associated gas will be produced in the process of oilfield development, which will provide enough gas source.
A responsible person of oil production technology in Liaohe Oilfield said that associated gas had a high value in the internal production process.
According to reservoir classification, natural gas can be divided into gas-field gas, condensate field gas, and oilfield associated gas.
associated gas: Gas deposit capping an oil deposit.
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