Разработка схем промысловых стендов для испытаний скважинных насосов при откачке жидкости и газа

Эксплуатация установками электроцентробежных насосов (УЭЦН) в настоящее время основной способ добычи нефти в России. Большинство скважин, оборудованных погружными насосами, эксплуатируется при давлениях у входа, меньших давления насыщения, и в насос поступает смесь жидкости и газа. Повышение эффективности работы скважинных насосов при откачке жидкости и газа — это одно из важных направлений исследований в области механизированной добычи. В статье представлены две схемы стендов. Одна из предложенных принципиальных гидравлических схем предусматривает размещение экспериментального образца насоса на поверхности земли вблизи устья добывающей скважины. Данный стенд может быть выполнен в мобильном варианте и перемещаться при необходимости с одной скважины на другую. Для испытаний целесообразно подбирать скважины с различной обводненностью жидкости. В другой схеме промысловый стенд для исследований характеристик насосов располагается на установке предварительного сброса воды. При этом возможно проведение испытаний на промысловом стенде с регулированием не только газосодержания, но и обводненности.

Developing schemes of field benches for tests of submersible pumps at liquid and gas delivering

The operation of submersible centrifugal pumps is currently the main method of oil production in Russia. Most wells equipped with submersible pumps are operated at inlet pressures, lower saturation pressures, and a mixture of liquid and gas enters the pump. Increasing of submersible pumps efficiency when pumping liquid and gas is one of the important areas of research in artificial lift methods. When developing new types of submersible equipment for efficient pumping of gas-liquid mixtures, bench tests of the characteristics of experimental pump samples are necessary. For a more complete approximation to real operating conditions, it is advisable to use field benches with the possibility of investigating the characteristics of pumps when pumping out well production. Therefore, an important practical task is the development of schematic diagrams of field benches that provide adequate modeling of well conditions when pumping liquid and gas by submersible pumps. In this paper, two schemes of benches are presented. One of the proposed basic hydraulic circuits involves placing an experimental pump sample on the surface of the earth near the wellhead of the production well. This bench can be made in the mobile version and move if necessary from one well to another. For testing, it is advisable to select wells with different water cuttings of the liquid. In another developed schematic diagram, a field test bench for testing the characteristics of pumps is located on a preliminary water discharge facility. It is also possible to carry out tests on a field bench with regulation of not only gas content but also water cut. It is shown that the problem of pump operation in wells and testing on field benches at high gas contents is relevant not only for the oil industry, but also for the gas industry. In the process of watering the gas deposits, a mechanism of water-alternated-gas effect (WAG) can be manifested as the main factor for extracting a part of condensate deposited in the reservoir. Therefore, the mechanized operation of watered gas condensate wells with submersible pumps will make it possible to realize WAG in the formation, not only with an increase in gas production, but also with an increase in the condensate recovery of reservoirs.

Authors
Publisher
Neftyanoe Khozyaistvo
Number of issue
7
Language
Russian
Pages
96-99
Status
Published
Year
2018
Organizations
  • 1 Peoples’ Friendship University of Russia
  • 2 Gubkin Russian State University of Oil and Gas
Keywords
скважинный насос; промысловый стенд; газожидкостная смесь; эксплуатация скважин; Field bench; Gas-liquid mixture; Submersible pump; Well operation
Date of creation
08.02.2021
Date of change
08.02.2021
Short link
https://repository.rudn.ru/en/records/article/record/71545/