Limiting gas inflow through the use of autonomous inflow control devices at the Russkoye Field

UDK: 622.276.5.05-5

DOI: 10.24887/0028-2448-2026-7-108-113

Key words: autonomous inflow control device (АICD), gas and oil zone, gas breakthrough, gas-oil ratio (GOR), highly viscous oil, poorly consolidated reservoir

Authors: М.М. Blyashuk (RN-GRD LLC, RF, Tyumen); E.R. Sharafutdinov (RN-GRD LLC, RF, Tyumen); S.A. Eremin (RN-GRD LLC, RF, Tyumen); А.S. Shirokov (RN-GRD LLC, RF, Tyumen); S.V. Zakharov (Tyumenneftegaz JSC, RF, Tyumen); A.I. Tyunkin (Tyumenneftegaz JSC, RF, Tyumen)

A significant number of fields worldwide are complicated by the presence of massive gas caps in the absence of any clay barrier between the oil- and gas-saturated sections. One of the challenges related to well operation at the Russkoye oil and gas condensate field is gas breakthrough from the gas cap and within the gas lens zone. Nowadays to reduce the gas-oil ratio in production wells, technologies such as cycling well operation, backup packers, and waterflooding systems are being successfully implemented. A well completion technology using autonomous inflow control devices (AICDs) was also implemented. AICDs, by changing hydraulic properties, enable the inflow to be limited in those well intervals where a gas breakthrough occurs. The devices operate based on Bernoulli's principle: when oil, gas, or water passes through an AICD, a pressure differential occurs, which, in turn, depends on the viscosity of the fluid passing through. Therefore the real-life AICDs operation experience showed that these devices are highly effective in preventing gas breakthroughs. When replicating the technology to actually drilled wells without installed inflow control devices, the technology applicability limits should be considered and the number of devices per well should be correctly selected depending on the planned production rates.

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