Temperature-resistant phenolic resin sand control agent and preparation method and application thereof

A technology of phenolic resin and sand control agent, which is applied in chemical instruments and methods, earthwork drilling, and fluid production, etc., can solve the problems of low activity of polycyclic aromatic hydrocarbons, no effect, and reduced consolidation strength. Consolidation strength of sand, improving sand control effect and widening application range

Active Publication Date: 2012-01-11
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the polycyclic aromatic hydrocarbons in the coal tar composition that can participate in the curing reaction together with the phenolic resin are not active, the

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Weigh 100g of coal tar and 14.5g of paraformaldehyde into a three-neck flask with a stirrer, heat to 60°C, and keep the temperature for 20 minutes. After the paraformaldehyde is completely dissolved, add 4.5g of p-toluenesulfonic acid and 0.5g of sulfamic acid acid, heat up to 85°C, continue to react for 6 hours, cool down to 50°C, add an appropriate amount of polar organic solvent to obtain a temperature-resistant resin with a concentration of 60%.

Embodiment 2

[0032] Weigh 100g of coal tar and 15.5g of paraformaldehyde into a three-necked flask with a stirrer, heat to 60°C, and keep the temperature constant for 20 minutes. After the paraformaldehyde is completely dissolved, add 5.3g of p-toluenesulfonic acid and 0.6g of sulfamic acid acid, heat up to 90°C, continue to react for 6.5 hours, cool down to 50°C, add an appropriate amount of polar organic solvent to obtain a temperature-resistant resin with a concentration of 60%.

Embodiment 3

[0034] Weigh 100g of coal tar and 16.5g of paraformaldehyde into a three-neck flask with a stirrer, heat to 60°C, and keep the temperature constant for 20 minutes. After the paraformaldehyde is completely dissolved, add 5.5g of p-toluenesulfonic acid and 1.0g of sulfamic acid acid, heat up to 95°C, continue to react for 7 hours, cool down to 50°C, add an appropriate amount of polar organic solvent to obtain a temperature-resistant resin with a concentration of 60%.

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Abstract

The invention relates to a temperature-resistant phenolic resin sand control agent and a preparation method and application thereof. The preparation method of the temperature-resistant phenolic resin sand control agent comprises the following steps of: (1) carrying out a reaction on coal tar and aldehyde under the action of acid catalyst to obtain a reaction product, wherein the acid catalyst is a mixture of p-toluenesulfonic acid and sulfamic acid; and (2) mixing the reaction product obtained by the step (1) with the phenolic resin, thus the temperature-resistant phenolic resin sand control agent is obtained. The temperature-resistant phenolic resin sand control agent provided by the invention can be used for improving washing resistance and corrosion resistance of an artificial boreholewall to high-temperature steam in a steam injection process and prolonging sand control life of a steam stimulation oil well.

Description

technical field [0001] The invention relates to a temperature-resistant phenolic resin sand control agent and its preparation method and application. The temperature-resistant phenolic resin sand control agent can be used to improve the resistance of the artificial well wall (built by the sand control agent) to high-temperature steam during steam injection. Scour and corrosion resistance, improve the sand control validity period for steam huff and puff oil wells. Background technique [0002] With the increase of throughput rounds, sand production in heavy oil wells is becoming more and more serious. Sand control in steam huff and puff oil wells is very difficult, and sand control agents are required to have good temperature resistance, and the artificial well wall established can withstand the scour and corrosion of high-temperature steam. Chemical sand control is to cement the sand grains of unconsolidated sandstone reservoirs, stabilize the formation structure, and achie...

Claims

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Application Information

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IPC IPC(8): C09K8/575E21B43/02E21B43/24
Inventor 张付生封新芳欧阳坚张怀斌王贵江徐立清王德伟
Owner PETROCHINA CO LTD
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