Application of New Proppant Fracturing Technologies in Carbonate Reservoirs of Vereiskian Stage at the Oilfields with Hard-To-Recover Reserves on the Territory of the Republic of Tatarstan

01.03.2015

The Republic of Tatarstan is one of the oldest oil producing regions in Russia. Its geology is mainly represented by carbonate deposits. Until recently, acid treatments were considered the only EOR method in carbonate reservoirs. Latest field trials conducted at the fields of Sheshmaoil Management Company with the engineering support of StrataGen consultants showed considerable advantages of new fracturing technologies compared to conventional acid treatments – in particular, higher initial well yields and long-term production build-up.

Striving to stabilize oil production rates oil companies of Tatarstan make a lot of effort to develop and introduce various EOR technologies. This, in particular, concerns highly-productive large mature oilfields. Besides, attention is paid to the development of less accessible hydrocarbon deposits – hydrocarbon production from bituminous rocks, hydrocarbon exploration in carbonate deposits of Devonian period, etc.

However, increasing profitability of development of great number of small inefficient oilfields with hard-to-recover reserves remains an open issue.

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