Synthetic method and application of 'BYC tracer agent'

A synthesis method and tracer technology, which is applied in the field of synthesis of a new type of tracer - "BYC tracer", can solve the problems of high detection difficulty, low analysis sensitivity, and increased concentration of rare earth elements, so as to reduce the cost of use , Excellent fluorescence performance, and the effect of improving detection accuracy

Active Publication Date: 2019-04-16
BEIJING UNIV OF CHEM TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] First, there are few types of tracers that can be widely used in oil fields at present, which is due to the many limitations of the nature of the tracer itself and the types and physical and chemical properties of the formation minerals
[0004] Second, commonly used tracers are anions, dyes, low-molecular alcohols, etc. that are easy to detect. Such tracers use a large amount (up to several tons), are highly toxic, require a large amount of water samples, and have low analytical sensitivity. Shortcomings such as long measurement cycle are not conducive to environmental friendliness
[0005] Its three, the use of ammonium thiocyanate, sodium bromide, potassium iodide also can make salinity increase, has influenced the viscosity of polymer solution, because the influence of polymer, the error that sodium bromide, potassium iodide detects is bigger, and potassium iodide The high cost makes the use of both limited
[0006] Fourth, artificial radioactive substances—— 60 Co. 3 H. 82 Br, etc., due to the high difficulty of detection, it is not easy to realize on-site detection, and its use is limited; with the improvement of environmental protection requirements, this substance will also be gradually eliminat

Method used

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  • Synthetic method and application of 'BYC tracer agent'
  • Synthetic method and application of 'BYC tracer agent'
  • Synthetic method and application of 'BYC tracer agent'

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0037] Example 1:

[0038] Preparation of BYC tracer

[0039] 1) Preparation of LiBiF 4 :

[0040] Use a graduated cylinder to accurately measure 60mL of anhydrous ethylene glycol and place it in a beaker. Use an analytical balance to accurately weigh 4.018g of BiCl 3 Dissolve 1.038 g of LiF solid in anhydrous ethylene glycol, mix well and place in a reactor, and react at 150°C for 24 hours. After cooling, add 100 mL of deionized water to it, and after the white precipitate is completely precipitated, vacuum filter to obtain LiBiF 4 powder.

[0041] 2) Preparation of LiBiF 4 :Yb 3+ , Ce 3+

[0042] [a] Prepare rare earth solution: accurately measure 60mL deionized water with a graduated cylinder and place it in a beaker, and accurately weigh 0.192g YbCl with an analytical balance 3 And 0.004g CeCl 3 The solid is dissolved in deionized water;

[0043] [b] Doping: the LiBiF in step 1) 4 The powder is uniformly dispersed in the rare earth solution of [a] in step 2), mixed evenly, and place...

Example Embodiment

[0063] Example 2:

[0064] Preparation of BYC tracer

[0065] 1) Preparation of LiBiF 4

[0066] Use a graduated cylinder to accurately measure 60mL of anhydrous ethylene glycol and place it in a beaker. Use an analytical balance to accurately weigh 3.789g of BiCl 3 Dissolve 1.038 g of LiF solid in anhydrous ethylene glycol, mix well and place in a reactor, and react at 150°C for 24 hours. After cooling, add 100 mL of deionized water to it, and after the white precipitate is completely precipitated, vacuum filter to obtain LiBiF 4 powder.

[0067] 2) Preparation of LiBiF 4 :Yb 3+ , Ce 3+

[0068] [a] Preparation of rare earth solution: accurately measure 60mL of deionized water with a graduated cylinder and place it in a beaker, and accurately weigh 0.018g CeCl with an analytical balance 3 And 0.384g YbCl 3 The solid is dissolved in deionized water;

[0069] [b] Doping: the LiBiF in step 1) 4 The powder is uniformly dispersed in the rare earth solution of [a] in step 2), mixed evenly, a...

Example Embodiment

[0089] Example 3:

[0090] Preparation of BYC tracer

[0091] 1) Preparation of LiBiF 4

[0092] Use a graduated cylinder to accurately measure 60mL of anhydrous ethylene glycol and place it in a beaker. Use an analytical balance to accurately weigh 3.260g of BiCl 3 Dissolve 1.038 g of LiF solid in anhydrous ethylene glycol, mix well and place in a reactor, and react at 150°C for 24 hours. After cooling, add 100 mL of deionized water to it, and after the white precipitate is completely precipitated, vacuum filter to obtain LiBiF 4 powder.

[0093] 2) Preparation of LiBiF 4 :Yb 3+ , Ce 3+

[0094] [a] Prepare rare earth solution: accurately measure 60mL of deionized water with a graduated cylinder and place it in a beaker, and accurately weigh 0.106g CeCl with an analytical balance 3 And 0.767g YbCl 3 The solid is dissolved in deionized water;

[0095] [b] Doping: the LiBiF in step 1) 4 The powder is uniformly dispersed in the rare earth solution of [a] in step 2), mixed evenly, and plac...

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Abstract

The invention relates to a synthetic method and application of a 'BYC tracer agent'. A rare earth element tracer method is one of effective methods to detect oil reservoirs in oil fields. A fluorescent nanomaterial with a core-shell structure is synthesized and can be used as an oil field tracer agent which is named as the 'BYC tracer agent'. The tracer agent has the advantages that the water solubility is good, the use amount is small, the exploration demand quantity of water samples is few, the analytical method is simple and convenient, and the analysis sensitivity is high; the tracer agenthas no radioactivity, low toxicity and a minimal impact on the environment; the degree of mineralization is not affected, the compatibility with polymers is good, and oil displacing of the polymers is not affected; the application of the BYC tracer agent, that is, the fluorescent nanomaterial in the field of oil field exploration is creatively achieved, and a feasible operation scheme is proposed.

Description

technical field [0001] The present invention relates to a synthesis method and application method of a new type of tracer——"BYC tracer". During the synthesis process, the innovative use of the "multi-phase ion alternate transfer method" successfully synthesized "BYC tracer", which is a fluorescent nanomaterial with a core-shell structure, especially as an oil field well tracer. It plays an important role in detecting reservoirs and testing the distribution and movement of reservoir 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 flooding will decrease, the water cut of oil wells will rise sharply, and the development effect will obviously deteriorate. The tracer can qualitatively judge the existence of high permeability zones or large pores, and the interwe...

Claims

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Application Information

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IPC IPC(8): C09K11/74C09K11/02G01N21/64E21B47/11
CPCC09K11/025C09K11/7773E21B47/11G01N21/643
Inventor 熊金平蔡冠宇翟保林张军
Owner BEIJING UNIV OF CHEM TECH
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