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Environment-friendly tracer controlled release capsule and method thereof

A tracer and environment-friendly technology, applied in the field of environment-friendly tracer controlled-release capsules, can solve the problems of slow-release and poor stability of oil-field tracers, and achieve the effects of improving slow-release performance and improving stability

Inactive Publication Date: 2020-12-22
权冉(银川)科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the shortcomings of the slow release and poor stability of oil field tracers in the prior art, and propose an environmentally friendly tracer controlled release capsule and its method

Method used

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  • Environment-friendly tracer controlled release capsule and method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The invention proposes an environment-friendly tracer controlled-release capsule, which includes the following raw materials in parts by weight: 10% of biological dyeing agent, 10% of acid-base regulator, 5% of methyl fluorobenzoate, 1% of potassium bisulfate, cyclic Tetrasiloxane 2%, Cyclopentasiloxane 1%, Polyvinyl Alcohol 1%, Chitosan 1%, Carmellose Sodium 2%, Polyethylene Glycol 3%, Diisodecyl Phthalate 4%, Dioctyl Sebacate 1%, Zinc Stearate 1%, the rest is water;

[0024] Its preparation method comprises the following steps:

[0025] S1: Mix methyl fluorobenzoate and potassium bisulfate with water, then add an acid-base regulator and mix evenly, the mixing speed is 300r / min, and the mixing time is 20min, to obtain the first mixture;

[0026] S2: Add biological dyeing agent to the first mixture, mix evenly, the mixing speed is 300r / min, the mixing time is 10min, settling, filtering to prepare the second mixture;

[0027] S3: Mix cyclotetrasiloxane, cyclopentasilox...

Embodiment 2

[0030] The invention proposes an environment-friendly tracer controlled-release capsule, which includes the following raw materials in parts by weight: 12% of biological dye, 12% of acid-base regulator, 7% of methyl fluorobenzoate, 3% of potassium bisulfate, cyclic Tetrasiloxane 4%, Cyclopentasiloxane 3%, Polyvinyl Alcohol 3%, Chitosan 3%, Carmellose Sodium 4%, Polyethylene Glycol 5%, Diisodecyl Phthalate 6%, dioctyl sebacate 3%, zinc stearate 3%, the rest is water;

[0031] Its preparation method comprises the following steps:

[0032] S1: Mix methyl fluorobenzoate and potassium bisulfate with water, then add an acid-base regulator and mix evenly, the mixing speed is 350r / min, and the mixing time is 25min, to obtain the first mixture;

[0033] S2: Add biological dyeing agent to the first mixture, mix evenly, the mixing speed is 350r / min, the mixing time is 12min, settling, filtering to prepare the second mixture;

[0034] S3: Mix cyclotetrasiloxane, cyclopentasiloxane, poly...

Embodiment 3

[0037] The invention proposes an environment-friendly tracer controlled-release capsule, which comprises the following raw materials in parts by weight: 15% of biological dye, 15% of acid-base regulator, 10% of methyl fluorobenzoate, 5% of potassium bisulfate, cyclic Tetrasiloxane 7%, Cyclopentasiloxane 5%, Polyvinyl Alcohol 5%, Chitosan 5%, Carmellose Sodium 6%, Polyethylene Glycol 7%, Diisodecyl Phthalate 9%, Dioctyl Sebacate 5%, Zinc Stearate 5%, the rest is water;

[0038] Its preparation method comprises the following steps:

[0039] S1: Mix methyl fluorobenzoate and potassium bisulfate with water, then add an acid-base regulator and mix evenly, the mixing speed is 400r / min, and the mixing time is 30min, to obtain the first mixture;

[0040] S2: Add biological dyeing agent to the first mixture, mix evenly, the mixing speed is 400r / min, the mixing time is 15min, settling, filtering to prepare the second mixture;

[0041] S3: Mix cyclotetrasiloxane, cyclopentasiloxane, po...

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Abstract

The invention belongs to the field of oilfield tracing, and particularly relates to an environment-friendly tracer controlled release capsule and a method thereof. Aiming at the problems of poor slowrelease and stability of an existing oilfield tracer, the invention provides the following scheme that the controlled release capsule is prepared from the following raw materials in parts by weight: 10 to 15 percent of a biological coloring agent, 10 to 15 percent of an acid-base regulator, 5 to 10 percent of methyl fluorobenzoate, 1 to 5 percent of potassium hydrogen sulfate, 2 to 7 percent of cyclobutylsiloxane, 1 to 5 percent of cyclopentasiloxane, 1 to 5 percent of polyvinyl alcohol, 1 to 5 percent of chitosan, 2 to 6 percent of sodium carboxymethylcellulose, 3 to 7 percent of polyethyleneglycol and 4 to 9 percent of di-iso-decylphthalate. The tracer controlled release capsule provided by the invention is injected into a target stratum along with fluid; when the tracer controlled release capsule is in contact with target fluid, a tracer component starts to be slowly released; and the tracer component is carried out by the target fluid; the concentration of the tracer component issampled and analyzed at a wellhead, so that the aim of monitoring the target fluid is fulfilled.

Description

technical field [0001] The invention relates to the field of oil field tracing, in particular to an environment-friendly tracer controlled-release capsule and a method thereof. Background technique [0002] An oil field refers to a specific area where crude oil is produced. Sometimes it is a general term for oil layers accumulated underground in a specific area. In a broad sense, several oil areas are collectively called oil fields. For example, Daqing Oilfield, the North Sea Oilfield in the UK, and the Tyumen Oilfield in Russia. Oilfields are hydrocarbons that occur naturally underground and are liquid under surface conditions. Conversely, what remains a gas at surface conditions is natural gas. Specific areas of natural gas production are natural gas fields. The size of recoverable oil reserves determines the value of extraction. It is required to accurately calculate the size of the oil-bearing area, the number and thickness of oil layers, and the oil reserves per u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B49/00
CPCE21B49/00
Inventor 里群
Owner 权冉(银川)科技有限公司
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