Oil-submersible electric pump-gas lift oil extraction method and its equipment

Abstract

An electric submerged pump-gas lifting method for recovering oil by oil well features that a gas lifting valve is installed to the oil pipe above the electric submerged pump and the oil pipe for said electric submerged pump has the Y-shaped structure. As a result, the gas lifting method and the electric submerged pump method can be used simultaneously or individually for recovering petroleum.

Description

Technical field: [0001] The invention relates to the field of oil exploitation, in particular to a submersible electric pump-gas lift oil recovery method and equipment thereof. Background technique: [0002] At present, in the field of petroleum exploitation, electric submersible pump oil production and gas lift oil production have been widely used: electric submersible pump oil production has the remarkable characteristics of strong liquid extraction ability, and it can be used in oil production wells suitable for production by electric submersible pump, which can maximize Fully meet the production requirements for large oil (liquid) production. This feature of the submersible electric pump oil production technology has further strengthened the wide application of this technology in the development and production of offshore oil with few wells, high production capacity and high output. The application of the pump also has its limited factors, and the factors often involved...

AI Technical Summary

Problems solved by technology

This feature of the submersible electric pump oil production technology has further strengthened the wide application of this technology in the development and production of offshore oil with few wells, high production capacity and high output. The application of the pump also has its limited factors, and the factors often involved are the production and operating environment, harsh working conditions, short trouble-free running time, frequent pump inspection operations, and long shut-in and workover time. Seriously affect the production timeliness, output and economic benefits of oil wells; when there is a convenient and sufficient high-pressure gas source, gas lift production is the most economical and easy-to-operate artificial lift production method, which is beneficial to the production of oil wells in different well conditions. Good adaptability, able to meet the production needs of oil wells within a large production range

The limitation of the application of gas lift oil production technology is that the maximum capacity of gas lift oil recovery is limited, which cannot well meet the production needs of large production oil wells. When multiple wells are used, oil and gas separators with large processing capacity are required for offshore oil production. Development increases capital and operating costs for offshore production platforms

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