Macromolecular drag reducer, preparation method and application thereof

A drag reducing agent and polymer technology, applied in the field of polymer drag reducing agent and its preparation, can solve the problems of difficult addition method, uneconomical and practical, large amount of surfactant, etc., and achieve good drag reducing effect, low cost, simple craftsmanship

Active Publication Date: 2017-10-20
李馥波
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the formation of micelles that can achieve drag reduction must use the content of surfactants to reach a critical concentration, the amount of surfactants is relatively large
In addition, the surfactant must be mixed evenly in the fluid to achieve a good drag reduction effect, which causes a difficult addition method for crude oil pipeline transportation, which is not economical and practical. It has the advantage of shear resistance, but it cannot be adopted by the crude oil pipeline transportation industry

Method used

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  • Macromolecular drag reducer, preparation method and application thereof
  • Macromolecular drag reducer, preparation method and application thereof
  • Macromolecular drag reducer, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Preparation of the polymer compound described in formula (I): 1Kg of 4,4',6,6'-tetracarboxy-1,1'-binaphthol and 10Kg of 2-methyl-4-trimethylsilane Base-1-buten-3-yne, 2Kg of formaldehyde and 20Kg of propanol are mixed, add the initiator system (0.025Kg of ammonium sulfate is adsorbed on 0.125Kg of graphite), at a pressure of 0.7MPa, a temperature of 110 The reaction was carried out under the condition of ℃ for 60 minutes, and after the reaction was completed, the temperature was lowered to normal temperature, and the volatile substances were removed to obtain the polymer compound described in formula (I).

[0033] Preparation of polymer drag reducer: under the condition of argon protection, the polymer compound described in the formula (I) of 3Kg, the α-decene of 10Kg, the triethylaluminum of 0.115Kg and the diphenyl silicone oil of 3Kg Stir and mix, and lower the temperature to 10° C.; then add 0.385 Kg of titanium trichloride, and conduct a polymerization reaction at ...

Embodiment 2

[0035]Preparation of the polymer compound described in formula (I): 1Kg of 4,4',6,6'-tetracarboxy-1,1'-binaphthol and 15Kg of 2-methyl-4-trimethylsilane Base-1-buten-3-yne, 1.8Kg of formaldehyde and 30Kg of ethanol are mixed, add the initiator system (0.04Kg of ammonium sulfate is adsorbed on 0.06Kg of graphite), and the pressure is 1.0MPa, the temperature is 105 The reaction was carried out under the condition of ℃ for 30 minutes, and after the completion of the reaction, the temperature was lowered to normal temperature, and the volatile substances were removed to obtain the polymer compound described in formula (I).

[0036] Preparation of polymer drag reducer: under the condition of helium protection, the polymer compound described in the formula (I) of 2Kg, the α-nonene of 10Kg, the triisobutylaluminum of 0.334Kg and the silicone oil of 5Kg are stirred and mixed , and the temperature was lowered to -10°C; then 0.667Kg of titanium tetrachloride was added, and the polymeriz...

Embodiment 3

[0038] Preparation of the polymer compound described in formula (I): 1Kg of 4,4',6,6'-tetracarboxy-1,1'-binaphthol and 20Kg of 2-methyl-4-trimethylsilane Base-1-butene-3-yne, 1.5Kg of formaldehyde and 25Kg of methanol are mixed, add the initiator system (0.03Kg of ammonium sulfate is adsorbed on 0.09Kg of graphite), at a pressure of 0.85MPa, a temperature of 100 The reaction was carried out at ℃ for 45 minutes, and after the reaction was completed, the temperature was lowered to normal temperature, and the volatile substances were removed to obtain the polymer compound described in formula (I).

[0039] Preparation of polymer drag reducer: under the condition of nitrogen protection, the polymer compound described in the formula (I) of 1Kg, the α-octene of 10Kg, the triisobutylaluminum of 0.2Kg and the methyl silicone oil of 8Kg are stirred Mix and lower the temperature to 0° C.; then add 0.5 Kg of titanium trichloride and carry out polymerization reaction at 0° C. for 4 hours ...

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Abstract

The invention relates to a macromolecular drag reducer, a preparation method and application thereof. The macromolecular drag reducer is prepared by slurry polymerization reaction of a macromolecular compound shown as formula (I), an alpha-olefin monomer and a catalytic system in an inert solvent, wherein the macromolecular compound shown as formula (I), the alpha-olefin monomer and the inert solvent are in a weight ratio of 0.1-0.3:1:0.5-0.8, the catalytic system is composed of a main catalyst and a cocatalyst, wherein the total weight of the main catalyst and the cocatalyst is 5-10% of the weight of the alpha-olefin monomer, and the weight ratio of the main catalyst to the cocatalyst is 1:0.3-0.5; and specifically, a, b and c are the number of links of repetitive unit, and the macromolecular compound shown as formula (I) has a molecular weight of 5000-10000. The macromolecular drag reducer provided by the invention has superior shear resistance and stability, even if after a fluid flows through a high shear part, the drag reduction effect is slightly reduced, the macromolecular drag reducer still has good drag reduction effect.

Description

technical field [0001] The invention relates to the technical field of oilfield applied chemistry, more specifically, it relates to a polymer drag reducer and its preparation method and application. Background technique [0002] Pipeline transportation is called the fifth largest transportation industry after road, railway, sea and air transportation. As a bridge and link connecting oil and gas resources and markets, pipeline transportation has increasingly shown vigorous vitality due to its advantages of high efficiency, low cost, safety and reliability, and plays an important role in the national economy. The vast majority of oil and gas produced around the world is transported by pipeline. Among many transportation methods, pipeline transportation has the advantages of fast construction, low investment, less land occupation, low energy consumption, no pollution to the environment, and less restriction by geographical and meteorological conditions. Therefore, pipelines ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F275/00C08F210/14C08F4/642F17D1/17
CPCY02E60/34C08F275/00C08F4/642C08F4/6421F17D1/17C08F210/14
Inventor 康涛
Owner 李馥波
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