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Rock core oil washing device and method

A core and oil washing technology, which is applied in the preparation of test samples, etc., can solve the problems of inability to clean crude oil, slow exchange of crude oil, long oil washing cycle, etc., to facilitate core cleaning, intensify movement, and enhance oil washing efficiency and the effect of washing oil effect

Inactive Publication Date: 2015-11-25
PETROCHINA CO LTD
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Problems solved by technology

At normal temperature or at a certain temperature, the organic solvent only penetrates into the pores of the core, so that on the one hand, the exchange between the organic solvent and the crude oil in the core pores is slow, resulting in a long oil washing cycle and low efficiency. For rock samples containing crude oil with high viscosity, the organic solvent cannot completely enter the fine pores in the core, so it is impossible to clean the crude oil in the core

Method used

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  • Rock core oil washing device and method
  • Rock core oil washing device and method
  • Rock core oil washing device and method

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Embodiment Construction

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0021] see figure 1 , the present invention provides a core oil washing device, which includes: a core chamber 10 with an inlet port 13 and an outlet port 15, the inlet port 13 is used to input lotion into the core chamber 10, and the outlet port 15 is used for Output the waste liquid in the core chamber 10; the first heating device arranged in the core chamber 10, the first heating device has a first working state capable of heating the core chamber 10 and The se...

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Abstract

The invention provides a rock core oil washing device which includes a rock core chamber having an inlet end and an outlet end, a first heating device arranged in the rock core chamber, and a pressure control system arranged in the rock core chamber; the inlet end is used for inputting a washing agent into the rock core chamber, and the outlet end is used for outputting a waste liquid in the rock core chamber; the first heating device has a first working state for heating the rock core chamber and a second working state for stopping heating of the rock core chamber; when the pressure of the rock core chamber exceeds a preset pressure, the pressure control system enables the first heating device to be turned off so as to make the first heating device have the first working state converted into the second working state. The purpose that the rock core oil washing device and method for washing a rock core under high-temperature and high-pressure conditions are provided is achieved.

Description

technical field [0001] The invention relates to the field of oil and gas exploitation, in particular to a core oil washing device and method. Background technique [0002] Before analyzing the porosity and permeability of the core in the formation, it is generally necessary to clean the analyzed rock sample to remove impurities and crude oil in the pores of the rock sample. The quality of rock sample cleaning mainly depends on whether the crude oil contained in the rock sample pores can be cleaned. [0003] Existing core oil washing equipment mainly uses methods such as normal temperature and pressure oil washing, heating oil washing, etc., using organic solvents to circulate and wash, soak core samples, and remove and wash the crude oil in the core pores through waste liquid. At normal temperature or at a certain temperature, the organic solvent only penetrates into the pores of the core, so that on the one hand, the exchange between the organic solvent and the crude oil i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/34
Inventor 柳少波宋岩姜林洪峰公言杰赵孟军马行陟田华郝加庆
Owner PETROCHINA CO LTD
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