Scale inhibitor for inhibiting formation of calcium carbonate scale and preparation method thereof

A technology of calcium carbonate scale and antiscalant, which is applied in the field of antiscalant and can solve problems affecting oil field production, equipment damage, and oil field economic loss, etc.

Pending Publication Date: 2021-08-13
上绍同烯达(绍兴)新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Calcium carbonate is often generated in the wellbore of oil production wells, surface gathering and transportation systems, downhole equipment, water injection formations, and underground reservoirs, which will lead to blockage of water injection wells and oil layers, blockage of oil well shafts and surface oil and gas gathering and transportation equipment pipelines, and even equipment damage. , so that the oil well output is low or even scrapped and shut down, which affects the output of the entire oil field and brings losses to the oil field economy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A scale inhibitor used to inhibit the formation of calcium carbonate scale, made of the following raw materials in parts by weight: 10 parts of calcium tartrate, 4 parts of glycerin polymethacrylate, 20 parts of the first component, 50 parts of deionized water, ten parts 5 parts of octaalkyl glucoside, 6 parts of benzotriazole and 20 parts of the second component;

[0032] The antiscalant for inhibiting the formation of calcium carbonate scale is prepared through the following steps:

[0033] The first step, preparing the first component and the second component;

[0034] The second step, mix calcium tartrate, glycerol polymethacrylate, the first component and deionized water, then add octadecyl glucoside, benzotriazole and the second component, stir well and heat to 40 °C, stirred and reacted for 1 hour to obtain a scale inhibitor for inhibiting the formation of calcium carbonate scale.

[0035] Wherein, the first component is prepared by the following steps:

[003...

Embodiment 2

[0048] A scale inhibitor for inhibiting the formation of calcium carbonate scale, made of the following raw materials in parts by weight: 15 parts of calcium tartrate, 5 parts of glycerol polymethacrylate, 25 parts of the first component, 55 parts of deionized water, ten parts 6 parts of octaalkyl glucoside, 7 parts of benzotriazole and 25 parts of the second component;

[0049] The antiscalant for inhibiting the formation of calcium carbonate scale is prepared through the following steps:

[0050] The first step, preparing the first component and the second component;

[0051] The second step, mix calcium tartrate, glycerin polymethacrylate, the first component and deionized water, then add octadecyl glucoside, benzotriazole and the second component, stir well and heat to 45 °C, stirred and reacted for 1.5 hours to obtain a scale inhibitor for inhibiting the formation of calcium carbonate scale.

[0052] Wherein, the first component is prepared by the following steps:

[0...

Embodiment 3

[0065] A scale inhibitor used to inhibit the formation of calcium carbonate scale, made of the following raw materials in parts by weight: 20 parts of calcium tartrate, 6 parts of glycerin polymethacrylate, 30 parts of the first component, 60 parts of deionized water, ten parts 7 parts of octaalkyl glucoside, 8 parts of benzotriazole and 30 parts of the second component;

[0066] The antiscalant for inhibiting the formation of calcium carbonate scale is prepared through the following steps:

[0067] The first step, preparing the first component and the second component;

[0068] The second step, mix calcium tartrate, glycerol polymethacrylate, the first component and deionized water, then add octadecyl glucoside, benzotriazole and the second component, stir well and heat to 50 °C, stirred and reacted for 2 hours to obtain a scale inhibitor for inhibiting the formation of calcium carbonate scale.

[0069] Wherein, the first component is prepared by the following steps:

[00...

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PUM

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Abstract

The invention discloses a scale inhibitor for inhibiting formation of calcium carbonate scale. The scale inhibitor is prepared from the following raw materials in parts by weight: 10-20 parts of calcium tartrate, 4-6 parts of glyceryl polymethacrylate, 20-30 parts of a first component, 50-60 parts of deionized water, 5-7 parts of octadecyl glycoside, 6-8 parts of benzotriazole and 20-30 parts of a second component, the preparation method comprises the following steps: 1, preparing the first component and the second component; and 2, mixing calcium tartrate, glyceryl polymethacrylate, the first component and deionized water, then adding octadecyl glycoside, benzotriazole and the second component, uniformly stirring, heating to 40-50 DEG C, and stirring to react for 1-2 hours, thereby obtaining the scale inhibitor for inhibiting the formation of calcium carbonate scale. The component A is connected to a main chain of a polymer of the first component, so that the high-temperature resistance of the first component is improved, and the second component has better dispersion stability and synergistically promotes the scale inhibition effect.

Description

technical field [0001] The invention belongs to the technical field of scale inhibitors, and in particular relates to a scale inhibitor for inhibiting the formation of calcium carbonate scale and a preparation method thereof. Background technique [0002] With the continuous development of oil and gas fields, the energy of the original formation is gradually depleted, so the method of artificially injecting liquid or gas into the formation is used to supplement the formation energy, so as to ensure the output of crude oil. At present, many oilfields use the method of reinjecting the treated produced water into the formation as injection water to supplement formation energy. However, there are many problems to be solved urgently in the water flooding development of oil fields, among which calcium carbonate scaling is one of the most common problems. Calcium carbonate is often generated in the wellbore of oil production wells, surface gathering and transportation systems, dow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/528C08F222/02C08F228/02C08F222/40C08G81/00
CPCC09K8/528C08F222/02C08G81/00C08F228/02C08F222/40
Inventor 不公告发明人
Owner 上绍同烯达(绍兴)新材料科技有限公司
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