Intelligent tracer agent, preparation method and application thereof and oil field tracing analysis method

A tracer and intelligent technology, applied in construction and other fields, can solve the problems of insufficient environmental protection, etc., and achieve the effect of multiple oil well parameters, simple preparation method, and good industrial applicability

Inactive Publication Date: 2018-04-06
盘锦鸿鼎油气技术服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the current oil well tracers use radioactive isotopes, which are not environmentally friendly

Method used

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  • Intelligent tracer agent, preparation method and application thereof and oil field tracing analysis method
  • Intelligent tracer agent, preparation method and application thereof and oil field tracing analysis method
  • Intelligent tracer agent, preparation method and application thereof and oil field tracing analysis method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Weigh 5g thermosensitive polymer, 1gMnSO 4 , prepared as follows:

[0042]Heat the thermosensitive polymer to 65 °C, add MnSO 4 , the reaction was stirred, and the smart tracer was obtained after cooling.

[0043] Take 1.12g of the smart tracer sample, add it to 30ml of solvent oil, the solvent oil is diesel oil, stir at a speed of 200r / min at 50°C, increase with time, and measure the dissolution rate of the smart tracer by atomic absorption spectrophotometry .

[0044] Test results such as figure 1 shown by figure 1 It can be seen that with the prolongation of time, the dissolution amount of the smart tracer gradually increases, and it is in a linear relationship. The dissolution curve of the smart tracer over time is obtained by linear fitting, and the results are as follows: figure 1 shown in the middle curve.

Embodiment 2

[0046] Weigh 5g thermosensitive polymer, 1gMnSO 4 , prepared as follows:

[0047] Heat the thermosensitive polymer to 65 °C, add MnSO 4 , the reaction was stirred, and the smart tracer was obtained after cooling.

[0048] Take 1.12g of the smart tracer sample, add it to 30ml of solvent oil, the solvent oil is diesel oil, stir at 200r / min under the condition of 65°C, increase with time, and measure the dissolution rate of the smart tracer by atomic absorption spectrophotometry .

[0049] Test results such as figure 1 shown by figure 1 It can be seen that with the prolongation of time, the dissolution amount of the smart tracer gradually increases, and it is in a linear relationship. The dissolution curve of the smart tracer over time is obtained by linear fitting, and the results are as follows: figure 1 shown in the middle curve.

Embodiment 3

[0051] Weigh 5g thermosensitive polymer, 1gMnSO 4 , prepared as follows:

[0052] Heat the thermosensitive polymer to 65 °C, add MnSO 4 , the reaction was stirred, and the smart tracer was obtained after cooling.

[0053] Take 1.12g smart tracer sample, add it into 30ml solvent oil, the solvent oil is diesel oil, stir at 200r / min speed under the condition of 75 ℃, increase with time, adopt atomic absorption spectrophotometry to measure the dissolution rate of smart tracer .

[0054] Test results such as figure 1 shown by figure 1 It can be seen that with the prolongation of time, the dissolution amount of the smart tracer gradually increases, and it is in a linear relationship. The dissolution curve of the smart tracer over time is obtained by linear fitting, and the results are as follows: figure 1 shown in the middle curve.

[0055] in figure 1 The three curves in the middle represent the dissolution curves of the smart tracers with time at temperatures of 50°C, 65°C ...

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Abstract

The invention provides an intelligent tracer agent, a preparation method and application thereof and an oil field tracing analysis method and belongs to the technical field of oil reservoir inter-welltracing. The tracer agent comprises a thermo-sensitive polymer and salt. The salt comprises metallic compounds of bivalency and above, third, fourth and fifth main group elements, salt of a lanthanide series metal element, vitamin B2, sodium benzoate or halogenation sodium benzoate. The tracer agent can be applied to oil well tracing measuring analysis to obtain a fluid and reservoir stratum information between a water injection well and an oil producing well (inter-well) and all parameters of crude oil. The preparation method of the intelligent tracer agent is simple. By utilizing the intelligent tracer agent to conduct tracing analysis on the oil well, all parameters of the underground oil well can be conveniently and accurately known, and accurate information is provided for oil well mining.

Description

technical field [0001] The invention relates to the technical field of interwell tracer in oil reservoirs, in particular to an intelligent tracer, its preparation method and application, and an oilfield tracer analysis method. Background technique [0002] During reservoir development, interwell tracer tests can determine the subsurface movement of injected fluids and describe reservoir heterogeneity. The principle is: inject a certain amount of suitable tracer into the fluid, make it enter the reservoir through the injection well and follow the injected fluid to cross the formation, and finally be produced by the production well; by tracking and monitoring the response of the tracer on the production well, obtain Information on fluids and reservoirs between injection and production wells (interwell). Specifically, a specific tracer is added to the injected water from the water injection well, and the concentration of the tracer is sampled and analyzed in the surrounding oi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/11C08F8/44C08F210/02C08F218/08
CPCC08F8/44E21B47/11C08F210/02C08F218/08
Inventor 李牧郭明许卫于周良何德文崔忠余姜超郑鸿儒王俊良
Owner 盘锦鸿鼎油气技术服务有限公司
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