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The primary methods of oil exploitation using only the reservoir energy. This energy allow recovery a small part of oil in place. It is estimated that only 25-35% of the oil in place can be exploited from the reservoir using the primary methods. As a result, there is a large amount of oil left in the reservoir, which can?t be exploited by conventional methods. Only the implementation of supporting methods, so-called secondary and third methods (EOR methods-Enhanced Oil Recovery), which use oil displacement with en...

Research objective: To develop methodological technique for the assessment of change patterns of the effectiveness of oil recovery depending on the size of already exhausted sections and stress-strain performance of oil reservoir. The experience of oil development shows that configuration (size) of operating area as well as flow coefficient of oil reservoir are considered to be within the key factors determining the rate of oil recovery, regime and parameters of injection and pumping as well as the design of well ...

The paper considers the issue of effective scale inhibitor applied while developing an oilfield using steam assisted gravity drainage technique, and presents a case study of injecting superheated steam of 140-160?C in the Ashalchi oilfield. In such conditions, organophosphorus chelating agents conventionally used to prevent scale formation degraded and proved to be ineffective. The authors analyzed chemical composition of scales deposited on the electric submersible pump pulled from one of the wells in the Ashalch...

At present, scale control through chemical inhibition is the preferred method in oil recovery though the principle of chemical agent action is still considered complex and not fully understood. An important issue that needs to be addressed is associated with compatibility of techniques and their impact on the reservoir and borehole zone. Scale control solutions remove deposits effectively and inhibit their formation, reducing costs associated with scale cleanup and disposal, while helping increase production and p...