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Non-oxidizing polymer cracking agent

A non-oxidative, polymer technology, used in drilling compositions, chemical instruments and methods, etc., can solve problems such as deteriorating water quality, corroding pipe strings, increasing iron ion concentration, etc., achieving good blocking effect and corrosion resistance. strong effect

Pending Publication Date: 2021-01-05
GUANGHAN HUAXING NEW TECH DEV INST GENERAL PARTNERSHIP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, as a non-safe product, strong oxidants have the disadvantages of being prone to explosion and corroding pipe strings. At the same time, they will increase the concentration of iron ions and deteriorate water quality. There will be certain potential dangers and uncontrollable conditions in use or transportation.

Method used

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  • Non-oxidizing polymer cracking agent

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Effect test

Embodiment 1

[0029] A non-oxidative polymer cracking agent, which comprises the following components by mass percentage: 0.5% cracking main agent, 0.2% cracking auxiliary agent, 0.5% clay stabilizer, 0.5% corrosion inhibitor, 0.5% surfactant and the remaining amount of water.

[0030] Specifically, the cracking main agent is glutaraldehyde, the cracking auxiliary agent is sodium nitrite, the clay stabilizer is EDTA, the corrosion inhibitor is propynyl alcohol, and the surfactant is fatty alcohol polyoxyethylene ether.

Embodiment 2

[0032] A non-oxidative polymer splitting agent, by mass percentage, comprising the following components: 1% cracking main agent, 0.5% cracking auxiliary agent, 1% clay stabilizer, 1% corrosion inhibitor, 1% surfactant and the rest amount of water.

[0033] Specifically, the cracking main agent is acetone, the cracking auxiliary agent is potassium nitrite, the clay stabilizer is EDTA, the corrosion inhibitor is 7-octynyl alcohol, and the surfactant is AEO-9.

Embodiment 3

[0035] A non-oxidizing polymer splitting agent, by mass percentage, comprising the following components: cracking main agent 1%, cracking auxiliary agent 1%, clay stabilizer 1%, corrosion inhibitor 2%, surfactant 2% and the rest amount of water.

[0036] Specifically, the cracking main agent is vinyl ether, the cracking auxiliary agent is sodium nitrite, and the clay stabilizer is NH 4 Cl, the corrosion inhibitor is 2-picoline, and the surfactant is Tween 60.

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Abstract

The invention relates to the technical field of cracking agents, in particular to a non-oxidizing polymer cracking agent. The non-oxidative polymer cracking agent comprises the following components inpercentage by mass: 0.5-2% of a main cracking agent, 0.2-3% of an auxiliary cracking agent, 0.5-3% of a clay stabilizer, 0.5-3% of a corrosion inhibitor, 0.5-3% of a surfactant and the balance of water, wherein the main cracking agent is one or more of glutaraldehyde, acetone, formaldehyde, vinyl ether, adipic dihydrazide and quinoline; and the auxiliary cracking agent is one or more of sodium nitrite, potassium nitrite, nitrososulfuric acid and silver nitrite. The non-oxidizing polymer cracking agent disclosed by the invention does not contain an oxidizing agent, is safe to use and transport, and is excellent in blockage removal performance.

Description

technical field [0001] The invention relates to the technical field of cracking agents, in particular to a non-oxidative polymer cracking agent. Background technique [0002] Most of the oilfields in my country adopt water injection development, and rationally use tertiary oil recovery methods (including alkali flooding, surfactant flooding, polymer flooding, alkali agent-surfactant-polymer flooding, etc.) through water injection wells as an effective measure to increase production and injection of oil wells Among them, polymer flooding occupies the main position and is widely used in various oil fields. As a water-soluble linear polymer, polyacrylamide is widely used in polymer flooding. [0003] With the gradual development of oilfields, the shortcomings of polymer flooding have gradually become prominent, such as the phenomenon of polymer clogging is becoming more and more serious, making it difficult or even difficult to inject polymer injection wells. The main reason i...

Claims

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Application Information

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IPC IPC(8): C09K8/524
CPCC09K8/524C09K2208/32C09K2208/12
Inventor 方天成陈红军蒙柏成方美良
Owner GUANGHAN HUAXING NEW TECH DEV INST GENERAL PARTNERSHIP
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