Specifics of oil well operation in the conditions of high free gas content in the production stream

Volkov, M.G.; Smolyanec, E.F.

doi:10.24887/0028-2448-2018-11-120-124

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2022

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“…While the artificial lift of oil and gas is moving towards increasing the rotational speed of ESP units [1], and the main attention is paid to the reliability of such units, it is necessary to pay attention to the problem of operating wells with a high content of free gas [2].…”

Section: Introductionmentioning

confidence: 99%

Investigation of the influence of the drive shaft speed on the characteristics of a submersible pump when pumping out a gas-liquid mixture

Odintsov

Musinskii

Ostrovskii

2022

IOP Conf. Ser.: Earth Environ. Sci.

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The article presents the results of small size ESP (electrical submersible pump) tests at a speed of 6000-8500 rpm in the presence of free gas at the inlet to the device. The submersible centrifugal pump is quite sensitive to the presence of free gas in the pumped gas-liquid mixture. Depending on the amount of free gas, the actual characteristics of the pump are deformed, and at a certain gas content, the pump stops supplying the gas-liquid mixture. Stable operation of the ESP is carried out with a free gas content at the pump inlet ranging from 5% to 25%, depending on the pump size. There are several ways to deal with gas in wells operated by ESP: from running the pump into the zone where the intake pressure ensures optimal pump flow and stable operation to the use of separating and dispersing devices at the intake. Results represent pump flow characteristics along with different inlet free gas contents.

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Section: Introductionmentioning

confidence: 99%