Oil field associated gas recycling device and method

Abstract

The invention relates to an oil field associated gas recycling device and method, and belongs to the technical field of natural gas hydrate application. Through the improved design of a low-temperature separator structure, oil field associated gas enters the low-temperature separator to realize multi-section removal of heavy hydrocarbon after primary separation and low-temperature cooling; a firstrefrigerating system and a second refrigerating system are designed, so that flow of each pipeline refrigerant is regulated and controlled through a data monitoring unit; a field process is combined,a hydrate prizing production device integrating heavy hydrocarbon removal, boosting, liquid storage, hydration reaction, hydrate slurry external conveying treatment and a refrigerating unit is provided. According to the oil field associated gas recycling device and method provided by the invention, oil field associated gas is converted into hydrate, so that associated gas heavy hydrocarbon removal, hydrate quick preparation, hydrate generation speed calculation, generation amount control and the like can be realized, so that part of the resource waste problems due to the fact that associatedgas of a far oil field without pipeline facilities or not worthy of laying pipelines can be effectively solved.

Description

technical field [0001] The invention relates to an oilfield associated gas recovery device and method, and belongs to the technical field of natural gas hydrate application. Background technique [0002] Oilfield associated gas, also known as oilfield gas, usually refers to natural gas that coexists with petroleum. The main components are low molecular alkanes such as methane and ethane, and a certain amount of propane, butane, pentane, etc. For associated gas in oilfields with scattered well sites and wide distribution areas, it is very difficult to recycle and utilize it due to the large investment in pipelines and the difficulty in laying them out. The development of non-pipeline gas supply schemes will undoubtedly increase associated gas production, save energy and reduce energy consumption in oil and gas fields. Squads are of great help. [0003] At present, the main non-pipeline gas supply schemes mainly include compressed natural gas (CNG) and liquefied natural gas (...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a device and method for recovering oilfield associated gas, which is used to recover scattered, remote oilfield gas with a small gas volume, and solve the problem of a large amount of waste of resources caused by the difficulty in recovering associated gas in some remote oilfields

[0007] The present invention mainly solves the following problems:

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