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Environment-friendly oil-soluble tracer agent and application thereof

An environmentally friendly tracer technology, applied in the field of environmentally friendly oil-soluble tracers, can solve the problems of low detection accuracy and toxicity, and achieve the effects of high detection accuracy, high flash point, and multiple types of elements

Pending Publication Date: 2020-09-11
青岛大地新能源技术研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problem that the existing oil-soluble tracers in the prior art have certain toxicity and low detection accuracy, the present invention provides an environment-friendly oil-soluble tracer, and it can monitor the oil production of each fracturing stage application in

Method used

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  • Environment-friendly oil-soluble tracer agent and application thereof
  • Environment-friendly oil-soluble tracer agent and application thereof
  • Environment-friendly oil-soluble tracer agent and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A kind of environment-friendly oil-soluble tracer, take lanthanum neodecanoate 59g, No. 5 industrial white oil 32.5g, 8g Span 60, 0.5g of ethyl p-hydroxybenzoate, mix uniformly, obtain environment-friendly oil-soluble tracer , The content of lanthanum element in the tracer is 17.0%.

Embodiment 2

[0038] An environment-friendly oil-soluble tracer, take 70g of cerium neodecanoate, 22g of No. 10 industrial white oil, 7.5g of Span 20, 0.5g of methyl p-hydroxybenzoate, and mix uniformly to obtain an environment-friendly oil-soluble tracer. tracer, the content of cerium in the product is 15%.

Embodiment 3

[0040] An environment-friendly oil-soluble tracer, take samarium naphthenate 65g, No. 15 food-grade white oil 27g, 7.5g Span 40, 0.5g methyl p-hydroxybenzoate, and mix uniformly to obtain an environment-friendly oil-soluble tracer As a tracer, the content of samarium element in the product is 14.7%.

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Abstract

The invention discloses an environment-friendly oil-soluble tracer agent and application thereof. The tracer agent is prepared from the following raw material of, in percentage by weight, 58.4%-73.7%of organic acid rare earth salt, 22%-33% of solvent, 4%-8% of surfactant and 0.3%-0.6% of preservative, wherein the organic acid rare earth salt is at least one of benzoic acid rare earth salt, stearic acid rare earth salt, naphthenic acid rare earth salt and neodecanoic acid rare earth salt. The oil-soluble tracer agent is environment-friendly, multiple in element types, high in flash point, convenient to transport, good in compatibility with crude oil and kerosene and free of precipitation, an inductively coupled plasma mass spectrometer can realize simultaneous detection of multiple rare earth elements, can detect the condition of the oil yield of each section, is high in detection precision which can reach ppt level (10-12kg / L level), and can reduce the usage amount of the oil-solubletracer agent.

Description

Technical field: [0001] The invention relates to the field of oil exploitation, in particular to an environment-friendly oil-soluble tracer and its application. Background technique: [0002] Due to the characteristics of simple construction technology, low risk, long monitoring time, no downhole operation, and wide application range (horizontal wells, highly deviated wells, special pipe strings, high water-cut wells, and low-yield wells), tracer monitoring technology has been widely used in recent years. It is often used to monitor the oil production effect of each stage after fracturing of a horizontal well, and provide a basis for the analysis of the fracturing effect and the improvement of the fracturing process in the later stage. [0003] The tracers used for trace monitoring mainly include water-soluble tracers and oil-soluble tracers, which are used to monitor the water production and oil production of each fracturing section after oil well fracturing. There are mai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/11
Inventor 史胜龙温庆志高源王乐泉胡锋郑冻冻张东晓
Owner 青岛大地新能源技术研究院
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