Process for assisting thick oil exploitation and device thereof

Abstract

The invention provides a process for assisting thick oil exploitation and a device thereof. The process comprises the following steps: selecting petroleum hydrocarbon mixture as a thick oil adjuvant; injecting the petroleum hydrocarbon mixture by a pump; separating on site to collect the petroleum hydrocarbon mixture; and using the petroleum hydrocarbon mixture in closed cycle. The device comprises a spiral separator, a light refrigeration coacervation device, a hydrocarbon mixture storage tank, a hydrocarbon injection pump, various brake values, pipelines and pipe fittings. The process and the device do not damage the oil layer, influence the quality of crude oil, or pollute the environment, have the advantages of simple process, convenient installation and the like, not only can be used for an individual well and a production platform, but also can be used for an oil production block, have strong process feasibility and applicability, can significantly improve the efficiency of an oil extractor, improve recovery ratio of the thick oil, and have excellent economical benefit.

Description

technical field [0001] The invention relates to a technique and equipment for assisting the exploitation of heavy oil by using light oil and other petroleum mixed hydrocarbons (mixed hydrocarbons for short), belonging to the technical field of petroleum exploitation. Background technique [0002] The exploitation of heavy oil is a recognized technical problem in the petroleum industry. Compared with light crude oil, the content of colloid, asphaltenes and waxes in heavy oil is higher, and the content of hydrocarbons is even lower than 50%, so that crude oil forms a relatively stable Colloidal dispersion system. Therefore, heavy oil is characterized by high viscosity and poor fluidity, and it is difficult to flow into the wellbore from the oil layer or lift from the wellbore to the ground, making it difficult to produce. [0003] At present, in the production of heavy oil, the use of steam huff and puff and steam flooding to heat the reservoir has become a conventional techn...

AI Technical Summary

Problems solved by technology

Due to the high power consumption of electric heating, the economy is poor; the source of thin oil is limited, especially in heavy oil blocks, there is no thin oil available; the active aqueous solution is injected into the well, and the active aqueous solution is mixed with the heavy oil in the well by mechanical action to form Unstable, low-viscosity oil-in-water emulsion, complicated process, and increased follow-up processing workload

These techniques have obvious defects, thus limiting the development and application

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