SU1420464A1 - Method of measuring liquid density in particulate bodies - Google Patents

Abstract

The invention relates to the field of determining the density of liquid media and can be used in the oil industry, hydraulic engineering and soil science. The goal is to determine the density of the liquid in the dispersed body it has saturated when the body is exposed to various pressures, increasing accuracy and reducing the complexity of the determination. The fluid-dispersed dispersed body is subjected to stepwise increasing pressure. At each step, the volume and mass of the body are determined, which decrease due to the extrusion of water from the body. The sought value is calculated by the ratio of the mass and volume loss at each step. 1 tab.

Description

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from 4 about:

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The invention relates to a technique for determining the density of liquid media and can be used in the oil-extracting, chemical and food industries, hydraulic engineering, soil science.

The purpose of the invention is to determine the density of a liquid in a dispersed body saturated with it when a body is subjected to various pressures, increasing accuracy and reducing the laboriousness of the determination.

The method is carried out as follows.

Saturate the dispersed body under test with liquid until the pores are completely filled. The body is placed in a compression device and an increasing stepwise pressure Pi, ..., Pk-i, Pk, ..., Pn is applied to it. When a load is applied, the fluid is squeezed out of the dispersed body, while its mass and volume are reduced. At each step, the masses M |, ..., M4-i, Mk, ... Mn and the volume Vi, ..., Vt-iV ,, of the body under study are determined.

The density of the fluid () k at a certain pressure Pk on the body is calculated by reducing the mass, | -Md; and body volume on this step:

(„AM / AV (, - M /,): (Vft-i-Vfc)

The positive effect from the use of the invention is achieved by determining the change in the mass and volume of the body under conditions of a compression effect on

it, excluding the operation of determining the density of the solid phase of a dispersed body, excluding the operation of drying the test body after each step of the load.

Example. The determination of the density of groundwater was carried out on a fully water-saturated, in the phyroid state, dusty loam containing 25% clay 0 particles with a diameter less than 0.005 mm at 18 ° C.

The study was carried out in a compression device brand KPR. Before testing, the area of the working ring of the compression device was determined, moreover, the time of action of each specific load (specific pressure) was chosen to be 48 h. The studied loam was taken into the working ring by the method of compression testing of cohesive soils which was transferred to the loam, the first unit pressure of 0.1 MPa, then, after stabilization of the sludge, after 48 hours, the height was compressed on the indicator.

5 G1 of the known sample area in the ring volume and the change in the height of the sample due to the extruded water, the volume of extruded water was calculated, and its mass was determined by weighing the sample before the load was applied and after 48 h.

0 The test results are presented in the table.

0.1-0.2

1.03

1.01-1: 7 1.09

Loam

dusty

(clay

of particles

d

0,005mm

25%)

Also

1420464

34

Claims (1)

The invention of the persistent body, increasing accuracy and reducing the complexity of the determination, dispersion. the next 5 nor the next pressure value, it doesn’t calculate the desired value, differing in the reduction of mass and volume, by the research that, in order to determine the density of the body, You are a sheniyu which the desired quantity of liquid removed at different pressures to dis-number.