High-temperature and high-pressure uninterrupted soaking rotation oil washing device and method

Abstract

The invention discloses a high-temperature and high-pressure uninterrupted soaking rotation oil washing device and method. The device comprises a solvent tank, a condensation tank, a core cleaning tank, a control system and a core cleaning tank pressurizing system. The upper portion of the solvent tank is connected to the condensation tank through a pipeline, a passage pipeline of the condensation tank is connected with the core cleaning tank, the bottom of the side wall of the core cleaning tank is connected to the solvent tank through a pipeline, the core cleaning tank pressurizing system is connected to the top of the side wall of the core cleaning tank through a pipeline, liquid inlet holes are uniformly formed in the bottom of a core barrel, liquid outlet holes are uniformly formed in the side wall of the core barrel and close to the top of the core barrel, the core cleaning tank further comprises a rotating mechanism and a high-pressure window, the core barrel rotates inside a core chamber by the aid of the rotating mechanism, and the high-pressure window is mounted on the left side wall of the core chamber. The oil washing instrument has the advantages of short core oil washing period, high automation degree and oil washing efficiency, safety and reliability.

Description

technical field [0001] The invention relates to an oil washing device for rock samples of different specifications such as conglomerate, compact rock, large-diameter sandstone, and special cores, and in particular to a high-temperature, high-pressure uninterrupted soaking and rotating oil washing device and method. Background technique [0002] In the petroleum scientific research industry, the oil washing instrument is an indispensable instrument for core cleaning and drying, and is used to clean crude oil and its soluble substances in oily cores. The working principle of the oil washing instrument is: the liquid solvent in the solvent chamber is heated to become solvent vapor, and condenses into a clean liquid solvent after entering the condensation chamber. The core in the core chamber. At present, high-temperature and high-pressure multifunctional oil washing instruments are mostly used for core cleaning. The oil washing instrument has the following problems: (1) The oi...

AI Technical Summary

Problems solved by technology

At present, high-temperature and high-pressure multifunctional oil washing instruments are mostly used for core cleaning. The oil washing instrument has the following problems: (1) The oil washing cycle is long and the degree of automation is low; (2) The core chamber is closed, and the addition of solvent in the core chamber It is difficult to grasp the amount of oil, and it is impossible to know the oil washing situation of the core in time; (3) it does not have the function of reciprocating oil washing and vacuuming, so the oil washing efficiency is greatly reduced; (5) The oil washing efficiency is low, and the oil washing effect is not ideal, especially for special cores such as conglomerate, tight rock, and large-diameter sandstone.

Images