Synthetic method and application of BEFC tracer

A synthesis method and tracer technology, which is applied in chemical instruments and methods, material excitation analysis, fluorescence/phosphorescence, etc., can solve the problems of high detection difficulty, low analysis sensitivity, use restrictions, etc., to reduce the cost of use and improve the fluorescence performance Excellent effect of improving detection accuracy
CN109735336AActive Publication Date: 2019-05-10BEIJING UNIV OF CHEM TECH +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BEIJING UNIV OF CHEM TECH
Publication Date
2019-05-10

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Abstract

The invention relates to a synthetic method and application of a BEFC tracer. Rare-earth element tracing method is one of effective measures to detect oil reservoirs in oilfields. A NaBiF4:Eu3+@C4H4Na2O6 fluorescent nano material with core-shell structure is synthesized herein and may act as an oilfield tracer, named as BEFC tracer. The tracer herein has the advantages of good water solubility, low usage, low water sample demand, good analytical simplicity, high analytical sensitivity, zero radiation, low toxicity, every low environmental impact, zero impact on mineralization degree, good compatibility with polymers, and zero impact on polymer flooding. The application of the BEFC tracer as one fluorescent nano material in the field of oilfield detection is innovatively achieved herein; afeasible operating scheme is provided as well.
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Description

Technical field

[0001] The invention relates to a europium ion-doped sodium bismuth fluoride@sodium tartrate nanomaterial with a core-shell structure, which is particularly suitable as a tracer in oilfields. It has good fluorescence, detects oil reservoirs and tests the distribution and movement of oil layer fluids . Background technique

[0002] In the water injection development of complex fault block oilfields, due to the heterogeneity of the oil layer itself, high permeability zones or large pores will gradually form between oil and water wells, the efficiency of water drive will decrease, the water content of oil wells will rise sharply, and the development effect will be significantly worsened. Tracers can qualitatively judge the existence of high permeability zones or large pores. Interwell tracers are an important means to detect the distribution and movement of reservoir fluids and the heterogeneity of reservoirs. The tracers currently used have the following problems: ...

Claims

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