Determination device and method for layered steam distributing valve

Abstract

The invention provides a determination device and method for a layered steam distributing valve. The determination device comprises an outer sleeve, a valve base, a main pipe and a bypass branch pipe;the valve base is located in the outer sleeve, the upper end of the valve base is in sealing connection with a sleeve opening of the outer sleeve, a through runner is formed in the valve base in theaxial direction, an axial insertion groove allowing the layered steam distributing valve to be inserted is formed in the side adjacent to the runner, an upper connector is connected into the upper endopening of the runner of the valve base in an inserted mode, the upper end of the axial insertion groove is communicated with an inner cavity of the outer sleeve, and the lower end of the axial insertion groove is communicated with the runner; the main pipe is arranged at the sleeve bottom of the outer sleeve in the axial direction, and the upper end of the main pipe is connected to the lower endopening in an inserted mode; the bypass branch pipe is close to the lower end of the outer sleeve, connected to the side wall of the outer sleeve in an inserted mode in the radial direction, and communicated with an inner cavity of the outer sleeve. Accordingly, the corresponding relationship of the steam injection capacity and the steam injection flow of the layered steam distributing valve canbe tested, and the determination device and method have the advantages of being simple in detection mode, reliable and accurate.

Description

Technical field [0001] The invention belongs to the field of petroleum exploitation, and specifically relates to a device and method for measuring the flow rate of a stratified steam valve. Background technique [0002] my country is rich in heavy oil resources, accounting for more than 20% of total oil resources, and has become the world's fourth largest producer of heavy oil. There are many types of heavy oil reservoirs in my country, complex geological conditions, and deep burial depths. Liaohe Oilfield is my country's largest production base of heavy oil, and it is also a development zone with many types of heavy oil reservoirs, difficult development, and the most complicated technology in China. The current output accounts for more than one-third of the entire oilfield output. Speeding up the pace of heavy oil exploitation is an important way to increase crude oil production. [0003] Research and production practices at home and abroad have shown that steam flooding is an ...

AI Technical Summary

Problems solved by technology

However, for multi-layer heavy oil reservoirs, due to the differences in rock physical properties of each layer and the combined injection and production in the initial production process, the producing degree of each layer is uneven, which aggravates the single-layer burst of steam overload, and makes the steam flooding vertically The sweep efficiency is reduced, which affects the steam drive production effect

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