Carbon dioxide flooding well head oil collection tank

Abstract

The invention relates to a wellhead oil collecting tank of a carbon dioxide flooding well, and aims at solving the problems that the gas-liquid separation effect is poor, a safety valve is frequently opened, and associated gas carrying a certain amount of crude oil leaks to the outside when the general oil collecting tank is used under the condition that a large amount of carbon dioxide and other associated gases are discontinuously produced by the flooding well, and resulting the failure of the safety valve or condensed block to influence the safety. The wellhead oil collecting tank of the carbon dioxide flooding well is characterized in that an angular medium inlet baffle (11) is arranged at an end head of a medium inlet (12); first- to second-order pore plates (15) are vertically connected between the medium inlet baffle (11) and a liquid outlet pipe (19) along the radial section; a pressure balance pipe (9) is arranged at the upper part of a container; a two-grade baffle plates (2) are arranged at an inlet of a gas distributing manifold (4). With the adoption of the wellhead oil collecting tank of the carbon dioxide flooding well, the impact of a large amount of carbon dioxide and other associated gases discontinuously produced by the flooding well to the gas-liquid separating capacity of a device can be reduced, so that the separating effect can be ensured, the safety of the device can be improved, and the environmental pollution can be avoided.

Description

technical field [0001] The invention relates to a wellhead oil collection tank in the technical field of oil and gas gathering and transportation in oil and gas fields, in particular to a wellhead oil collection tank for carbon dioxide flooding wells. Background technique [0002] Carbon dioxide flooding is a relatively new oilfield development technology, which can not only achieve effective development of oilfields, but also is more suitable for low-permeability, special-permeability, water-sensitive reservoirs and other occasions where water injection and chemical agent injection are difficult to achieve effective development. , and a large amount of carbon dioxide used for oil displacement is buried underground, which is conducive to low-carbon environmental protection, and it can be said to serve multiple purposes. In recent years, it has just begun to be applied in my country's oilfield development. At present, in the process flow of the surface gathering and transpor...

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to overcome the environmental protection problems that the oil wells intermittently produce a large amount of associated gas such as carbon dioxide in the background technology when the conventional oil collection tank is used, the safety valve is prone to failure or the safety problem of condensation, and the oil gas leaks and the environment is easy to pollute, and provides a CO2 flooding well head oil collection tank

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