Pressure testing method for radioactive isotope carrier

A radioactive isotope and withstand voltage test technology, which is applied in the direction of applying stable tension/pressure to test the strength of materials, can solve the problems of complex equipment and cumbersome test methods, and achieve the effect of low equipment cost and simple operation

Active Publication Date: 2012-05-09
河南省同新科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Solid-loaded tracers (such as 131Ba GTP microsphere tracers) widely used in injection profile logging in China need to be Working under high pressure, the pressure resistance of the carrier is an important performance index. This kind of pressure test often occurs in the development and selection stage of the carrier, and the pressure resistance test requires a high-pressure test environment, which usually requires a press or high-pressure injection. These characteristics determine that the pressure test equipment in the prior art is complex and the test method is cumbersome. Although it can achieve a certain measurement accuracy, it is necessary for the occasions that need to quickly measure the compressive strength of the isotope carrier, such as field operations. situation, it shows considerable limitations

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Get 10g of radioactive isotope carrier, wrap it with cotton gauze, put it in the autoclave; add 125g of calcium carbide in the autoclave, put 71g of water into a ziplock bag and fix it on the stirrer; seal the autoclave, open and stir, when After the ziplock bag is broken, the calcium carbide and water mix and react to release acetylene gas, and the system pressure gradually increases as the reaction progresses; when the pressure is constant, keep the pressure for 5 hours, and then safely release the gas to normal pressure in the fume hood, and open the reaction kettle , take out the radioactive isotope carrier, and measure the damage rate, density and particle size through experiments. This condition can be used for 5MPa withstand voltage test.

Embodiment 2

[0014] Get 15g radioactive isotope carrier, wrap with cotton gauze, put into autoclave; Add 138g sodium bicarbonate in autoclave, 569ml hydrochloric acid (10%) is packed in ziplock bag and fixed on the stirrer; Seal autoclave , open and stir, when the ziplock bag breaks, sodium bicarbonate and hydrochloric acid mix and react to release carbon dioxide gas, and the system pressure gradually increases as the reaction progresses; when the pressure is constant, keep the pressure for 5 hours, and then safely release the gas in the fume hood to At normal pressure, open the reactor, take out the radioactive isotope carrier, and measure the damage rate, density and particle size through experiments. This condition can be used for 10MPa withstand voltage test.

Embodiment 3

[0016] Get 5g radioisotope carrier, wrap with cotton gauze, put into autoclave; Add 80g zinc in autoclave, 845ml hydrochloric acid (10%) is packed in ziplock bag and fix on the stirrer; Seal autoclave, open Stir, when the ziplock bag breaks, zinc and sulfuric acid mix and react to release hydrogen, and the system pressure gradually increases as the reaction progresses; when the pressure is constant, keep the pressure for 5 hours, then safely release the gas to normal pressure in the fume hood, and open the reaction Take out the radioactive isotope carrier, and measure the damage rate, density and particle size through experiments. This condition can be used for 5MPa withstand voltage test.

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PUM

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Abstract

The invention discloses a pressure testing method for a radioactive isotope carrier. The method comprises the following steps of: coating a certain quantity of radioactive isotope carriers with cotton gauze, and putting into a high-pressure reaction kettle which is resistant to the pressure of 10-40 MPa; putting chemical reagents which can produce gases through chemical reactions into the high-pressure reaction kettle in an isolating way; sealing the high-pressure reaction kettle, mixing the at least two types of chemical reagents, and raising the pressure of a system to a target pressure; when the pressure is constant, preserving pressure for 3-5 hours; and safely deflating to the normal pressure in a ventilation kitchen, opening the high-pressure reaction kettle, taking the radioactive isotope carriers out, and measuring the breakage rate, density and granularity by experimenting. The pressure testing method disclosed by the invention has the characteristics of low equipment cost and easiness, convenience and practicability for operating.

Description

technical field [0001] The invention belongs to the field of withstand voltage test, in particular to a method for withstand voltage test of a radioisotope carrier. Background technique [0002] Solid-loaded tracers widely used in injection profile logging in China (such as 131 Ba GTP microsphere tracer) needs to work under high pressure, and the pressure resistance of the carrier is an important performance index. This pressure test often occurs in the carrier development and selection stage, and the pressure resistance test requires a high pressure The test environment usually requires a press or a high-pressure syringe pump to achieve high pressure. These characteristics determine that the pressure test equipment in the prior art is complicated and the test method is relatively cumbersome. Applications of compressive strength, such as in field operations, present considerable limitations. Therefore, there is an urgent need for a test method with simple equipment and sim...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/12
Inventor 遆永周张锋华成武吕晓华邓刚朱玉坤
Owner 河南省同新科技有限责任公司
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