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A kind of high-content water-based drag reducing agent and preparation method thereof

A drag-reducing agent, high-content technology, applied in chemical instruments and methods, earthwork drilling, wellbore/well components, etc., to achieve the effect of eliminating slow dissolution, high powder content, and online mixing

Active Publication Date: 2021-03-19
CHENGDU LEARN PRACTICES TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] There are some imperfections in the existing drag reducer products. There is an urgent need for a drag reducer with fast hydration speed, good storage stability and high powder content in the market.

Method used

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  • A kind of high-content water-based drag reducing agent and preparation method thereof
  • A kind of high-content water-based drag reducing agent and preparation method thereof
  • A kind of high-content water-based drag reducing agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Preparation of high content water-based drag reducer:

[0061] 1.1 Raw materials:

[0062] Each raw material is in parts by weight, as shown in Table 1 below:

[0063] Table 1 Embodiment 1 raw material table

[0064]

[0065] 1.2 Preparation method:

[0066] Include the following steps:

[0067] S1: Add solvent C and suspending agent to the reaction vessel, stir at a stirring rate of 1000r / min for 1h, and let stand for 1h;

[0068] S2: Add solvent A and solvent B to the reaction vessel and stir at a stirring rate of 100r / min for 1h, and let stand for 1h;

[0069] S3: Add the surfactant and the water-soluble polyacrylamide polymer into the reaction vessel and stir for 1 hour at a stirring rate of 100 r / min to obtain a finished high-content water-based drag reducing agent.

Embodiment 2

[0071] Preparation of high content water-based drag reducer:

[0072] 2.1 Raw materials:

[0073] Each raw material is in parts by weight, as shown in Table 2 below:

[0074] Table 2 Embodiment 2 raw material table

[0075]

[0076] 2.2 Preparation method:

[0077] Include the following steps:

[0078] S1: Add solvent C and suspending agent to the reaction vessel, stir at a stirring rate of 900r / min for 1.2h, and let stand for 1.5h;

[0079] S2: Add solvent A and solvent B into the reaction vessel and stir at a stirring rate of 110r / min for 0.8h, and let stand for 0.8h;

[0080] S3: Add a surfactant and a water-soluble polyacrylamide polymer into the reaction vessel and stir for 1.2 hours at a stirring rate of 110 r / min to obtain a finished high-content water-based drag reducer.

Embodiment 3

[0082] Preparation of high content water-based drag reducer:

[0083] 3.1 Raw materials:

[0084] Each raw material is in parts by weight, as shown in the following table 3:

[0085] Table 3 Embodiment 3 raw material list

[0086]

[0087] 3.2 Preparation method:

[0088] Include the following steps:

[0089] S1: Add solvent C and suspending agent to the reaction vessel, stir at a stirring rate of 1100r / min for 0.8h, and let stand for 0.8h;

[0090] S2: Add solvent A and solvent B into the reaction vessel and stir at a stirring rate of 90r / min for 1.2h, and let stand for 1.5h;

[0091] S3: Add a surfactant and a water-soluble polyacrylamide polymer into the reaction vessel and stir at a stirring rate of 90r / min for 0.8h to obtain a finished high-content water-based drag reducer.

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Abstract

The invention provides a high-content water-based resistance reducing agent and a preparation method thereof, and solves the technical problems in the prior art that a powder resistance reducing agentis low in hydration speed, oily residues exist after gel breaking of an oily suspension resistance reducing system, environmental friendliness is not achieved and the powder content of a water-basedresistance reducing suspension system is low. The preparation comprises the following raw materials in parts by weight: 20-50 parts of polyacrylamide; 20-40 parts of polymethacrylamide; 22-66 parts ofa solvent A; 4-12 parts of a solvent B; 6-18 parts of a solvent C; 1-3 parts of a suspending agent; and 3-6 parts of a surfactant, wherein the solvent A is alkyl amides; the solvent B is polyethyleneglycol; and the solvent C is polyhydric alcohol or polyhydric alcohol esters. The high-content water-based resistance reducing agent not only has the characteristics of high hydration speed, high powder content and good storage stability, but also can realize integrated operation and online blending.

Description

technical field [0001] The invention relates to a water-based drag reducing agent, in particular to a high-content water-based drag reducing agent and a preparation method thereof. Background technique [0002] my country's dependence on foreign natural gas has increased year by year, reaching 45% in 2019, making it the world's largest natural gas importer. It is urgent to increase my country's natural gas production to ensure energy security. my country's shale gas reserves rank first in the world, and through the vigorous development of shale gas, the tight supply of natural gas in my country can be alleviated. However, the unconventional oil and gas represented by shale gas in my country has complex surface terrain, lack of water resources, high pressure on environmental protection, and high difficulty in development; the current polymer powder used in shale gas exploration and development has long hydration time and high The problem of poor dissolution in water, especia...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/68C09K8/88C09K8/80C09K8/035
CPCC09K8/035C09K8/68C09K8/80C09K8/882C09K8/885C09K2208/34
Inventor 任山卢聪雷欣路千里唐朝钧王琨王继宇张绍彬刘彧轩刘斌赵志红康毅刁素
Owner CHENGDU LEARN PRACTICES TECH CO LTD
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