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Fruit shell high-temperature-resistant resin coated sand and preparation method thereof

A high-temperature-resistant resin and fruit shell technology, which is applied in the field of sand control in oil field mining, can solve the problems of difficulty in increasing the sand ratio, affecting the effect of sand control, and inconvenient portability, and achieves the effects of easy pumping, high temperature resistance, and not easy to fall off

Active Publication Date: 2017-09-15
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The heat-resistant resin sand used in the past generally has a higher density (generally 2.2g / cm 3 Above), it is not easy to carry, in the construction of sand control, the viscosity of the sand-carrying fluid is required to be high (generally greater than 70mPa.s), it is easy to cause sand plugging, it is difficult to increase the sand ratio, and affect the sand control effect

Method used

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  • Fruit shell high-temperature-resistant resin coated sand and preparation method thereof
  • Fruit shell high-temperature-resistant resin coated sand and preparation method thereof
  • Fruit shell high-temperature-resistant resin coated sand and preparation method thereof

Examples

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Effect test

Embodiment 1

[0045] The invention provides a kind of high temperature resistant resin-coated sand of fruit shell, which is prepared by the following steps:

[0046] 1. Preparation of husk particles

[0047] Grind and sieve the walnut shells, apricot cores or peach cores, take the shell materials with a particle size of 0.4-1.2 mm, put them in a drying box, and fully dry them at a temperature of 200-240 ° C for 3 -5h or so, decompose and volatilize the low-fraction tissue in the husk to obtain husk-like particles.

[0048] 2. Dilute the resin

[0049] Use 219 thermosetting phenolic resin and ethanol to mix, the mixing ratio is 1:1, stir thoroughly for 3-5min to obtain the diluted resin.

[0050] 3. Preparation of high temperature resistant resin-coated sand for fruit shells

[0051] Processing process: start the sand mixer, when the temperature of the raw material of fruit shells rises to about 120°C, pour it into the sand mixer, stir at a low speed, then slowly pour the prepared diluted...

Embodiment 2

[0053] The invention provides a kind of high temperature resistant resin-coated sand of fruit shell, which is prepared by the following steps:

[0054] 1. Preparation of husk particles

[0055] Grind and sieve the walnut shells, apricot cores or peach cores, take the shell materials with a particle size of 0.4-1.2 mm, put them in a drying box, and fully dry them at a temperature of 200-240 ° C for 3 -5h or so, decompose and volatilize the low-fraction tissue in the husk to obtain husk-like particles.

[0056] 2. Dilute the resin

[0057] Use liquid YJ type furan resin to mix with ethanol, the mixing ratio is 1:1, stir thoroughly for 3-5min to obtain the diluted resin.

[0058] 3. Preparation of high temperature resistant resin-coated sand for fruit shells

[0059] Processing process: start the sand mixer, when the temperature of the raw material of fruit shells rises to about 120°C, pour it into the sand mixer, stir at a low speed, then slowly pour the prepared diluted resi...

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Abstract

The invention relates to fruit shell high-temperature-resistant resin coated sand and a preparation method thereof. The coated sand is prepared from fruit shell particles serving as a kernel propping agent and a resin coating with which the surfaces of the fruit shell particles are coated, wherein fruit shell comprises one or more of walnut shell, apricot pit and peach pit; the resin comprises one or two of a thermosetting phenolic resin and a furan resin. The coated sand is characterized in that the fruit shell (such as the walnut shell, the apricot pit and the peach pit) particles are taken as the kernel propping agent, and the resin coating is taken as a coating layer, so that the coated sand can act effectively at the temperature of 350 DEG C, is low in density, and is easy to prepare; the preparation cost of sand-carrying fluid can be lowered effectively, and the construction success rate is increased effectively.

Description

technical field [0001] The invention relates to an important sand control agent in oil well sand control in the field of oil production engineering, which is a new type of sand control agent for fruit stones and shell pellets and high temperature resistance of 350°C, and specifically relates to the technical field of oil field production sand control. Background technique [0002] In the process of oil extraction, especially in the extraction of heavy oil, the sand production of oil and gas wells is always an important issue affecting the production of oil wells. Sand production in oil and gas wells causes oil and gas well production to decline, damages production equipment, sand buries oil layers, causes oil and gas wells to stop production, and even causes formation deficits and collapses, making casing stress unstable, causing casing deformation and faults, and seriously causing oil and gas wells to be scrapped . Therefore, sand control of oil and gas wells is an importa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/575
CPCC09K8/5758C09K2208/04
Inventor 陈楠赵洪忠元容震刘玉梅曹彬王星棋孟德斌边多明姜云鹏安兆治
Owner PETROCHINA CO LTD
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