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Water containing testing method

A technology of water content and calculation method, which is applied in the field of water content testing and can solve problems such as large testing errors.

Inactive Publication Date: 2019-04-30
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The main purpose of the present invention is to provide a water-containing assay method to solve the problem of relatively large assay errors in the method for thin oil water-containing assay in the prior art

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Embodiment Construction

[0021] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0022] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0023] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that wh...

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Abstract

The present invention provides a water containing testing method for testing a water content in a sample containing oil-water mixed liquid. The testing method comprises the following steps that: the sample is poured into a sample cylinder and the sample in the sample cylinder is separated to be mixed liquid formed at the upper layer and free water formed at the lower layer; weight G (water) of thefree water in the sample cylinder is obtained and a water content H(separation) of the mixed liquid is obtained; and on the basis of the weight G (water) of the free water and the water content H(separation) of the mixed liquid, a total water content H(total) of the sample is obtained. With the water containing testing method, a problem of the large testing error of the existing thin oil water-containing testing method in the prior art is solved.

Description

technical field [0001] The invention relates to the field of water content testing, in particular to a water content testing method. Background technique [0002] There are the following two major defects in the existing thin oil water content assay method: [0003] 1. At present, 25ml or 100ml centrifuge tubes are generally used for the water content test of thin oil, but in fact, demulsifiers, gasoline and other demulsifiers must be added to the crude oil test for water content, resulting in only 10ml oil samples in the 25ml centrifuge test tube , 100ml centrifuge tube can only put 50ml oil sample. [0004] However, sampling less than 50ml on site is difficult to control, and for oil wells with at least 1m3 liquid production, the sample volume below 100ml is too small to fully represent the water cut level of the oil well. [0005] 2. The test of water content in thin oil requires that the oil and water are fully mixed, that is, there should be no free water, but to do t...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N5/00G01N33/28
CPCG01N5/00G01N33/2847
Inventor 赖年陶宏王桂庆郭泓志吉庆鹏李群星
Owner PETROCHINA CO LTD