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Preparation method of radioactive isotope tracer agent

A radioactive isotope and tracer technology, which is applied in the field of preparation of high-efficiency radioisotope tracers, can solve problems such as safety accidents affecting oil and gas recovery, and achieve the effects of reducing exposure time, improving preparation efficiency, and high-efficiency adsorption

Active Publication Date: 2021-04-09
河南省科学院同位素研究所有限责任公司 +2
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Problems solved by technology

The monitoring of water injection information in oil and gas wells is of great significance to water flooding oil production. Inaccurate well logging will not only significantly affect the recovery rate of oil and gas, but also cause major safety accidents, such as the "ConocoPhillips oil spill" accident in the Bohai Sea

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  • Preparation method of radioactive isotope tracer agent

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Embodiment Construction

[0026] The present invention will be described in detail below in conjunction with specific embodiments.

[0027] refer to figure 1 , a high-efficiency radioisotope tracer preparation system, including an iodine steam generator, a conical adsorption tower, and a cladding device, and the airtightness between the iodine steam generator, the conical adsorption tower, and the cladding device is realized by a pipeline and an air valve connection, to ensure that the emissive substance does not leak; the iodine steam generator includes a reaction vessel and a heating jacket 3 installed outside the reaction vessel; the conical adsorption tower includes a conical vessel and an adsorption heating jacket installed outside the conical vessel 16. The adsorption heating jacket 16 is used to heat the conical container, and the inside of the conical container is a porous adsorption material for absorbing iodine vapor;

[0028] The bottom of the conical container is open, and a rotating perfo...

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Abstract

The invention discloses a preparation method of a radioactive isotope tracer agent. The preparation method comprises the following steps of: step 1, adding a radioactive iodine salt solution and an oxidant into a certain reaction container, and heating to generate iodine steam; step 2, conveying the iodine steam to the bottom of an adsorption tower filled with a porous adsorption material, and efficiently adsorbing the iodine steam by the porous adsorption material; step 3, after adsorption, circulating a very small amount of the iodine steam remained at the upper part of the adsorption tower into the reaction container; and step 4, after circulating adsorption, uniformly adsorbing all radioactive iodine-131 isotopes; and step 5, carrying out organic coating on the porous adsorption material. By adopting the method disclosed by the invention, a small amount of the radioactive iodine salt solution is added into the oxidant to generate an iodine simple substance; iodine is sublimated at 45 DEG C and the generated high-humidity iodine steam is sucked into a high-pore adsorbent with an impregnant; the whole preparation technology consumes 1 to 2h and the preparation efficiency is greatly improved; the exposure time of operators under a radioactive environment is greatly shortened.

Description

technical field [0001] The invention relates to a preparation method of a high-efficiency radioactive isotope tracer, in particular to a preparation method of a high-efficiency radioactive solid isotope tracer for water injection profile logging. Background technique [0002] With the progress of oil and gas, the energy of the oil layer itself will be continuously consumed, causing the pressure of the oil layer to drop continuously, a large amount of underground crude oil degassing, the viscosity increases, the output of the oil well is greatly reduced, and even the injection and production will be stopped, resulting in a large amount of dead oil remaining underground. come out. In order to make up for the underground deficit caused by the extraction of crude oil, maintain or increase the pressure of the reservoir, achieve high and stable oil production, and obtain a high recovery rate, it is necessary to inject water into the oil field. The monitoring of water injection in...

Claims

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Application Information

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IPC IPC(8): E21B47/11B01D53/06B01J19/00
CPCB01D53/06B01J19/00B01J19/0013
Inventor 李灿然李向辉陈海军邓刚华成武李国旺孟闯朱玉坤王晓慧李旭照张奕李甜甜苑素华黎振华王宏正
Owner 河南省科学院同位素研究所有限责任公司
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