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Sewage preparation functional polymer and preparation method thereof

A functional polymer technology, applied in drilling compositions, chemical instruments and methods, etc., can solve problems such as waste of fresh water resources, pollution, and failure of sewage polymers, so as to avoid pollution, save fresh water resources, and highlight the essence The effect of sexuality

Active Publication Date: 2016-09-28
TIANJIN DAGANG OILFIELD BINGANG GRP BOHONG PETROLEUM CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Existing sewage polymers such as polyacrylamide, when used to treat high-temperature, high-salt sewage, due to the synergistic effect of heat, oxygen, shear, salinity and other factors, easily cause sewage polymers to fail, resulting in pollution. It also leads to wastage of fresh water resources due to the failure to recycle water resources

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Sewage prepares functional polymers, which are made by the following steps:

[0023] A. Prepare the following raw materials:

[0024] Acrylamide, sodium hydroxide, azobisisobutylamidine hydrochloride (TB-2000) and nitrogen with a purity of more than 99.9%, the acrylamide is formulated to a concentration of 15% or 18% or 20% or 22% by mass % or 25% monomeric acrylamide solution, sodium hydroxide is prepared into a solution with a mass percentage concentration of 10% or 12% or 13 or 14% or 15% as a hydrolysis agent, azobisisobutylamidine hydrochloride (TB-2000) prepared into 500ppm or 520ppm or 550ppm or 580ppm or 600ppm solution as initiator;

[0025] B. According to the ratio of 1000 parts by weight of the monomer acrylamide solution to 2 or 4 or 6 or 8 or 10 parts by weight of the hydrolyzing agent, the acrylamide solution is mixed with the hydrolyzing agent to obtain a mixed solution, and then the temperature of the mixed solution is regulated to 8°C-12°C, and conti...

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Abstract

The invention relates to a functional polymer mixed with sewage and a preparation method thereof, and aims to provide an oil-displacing agent for tertiary oil recovery used for increasing the high-temperature and high-salinity oil reservoir recovery efficiency; the functional polymer can be mixed with collected sewage to obtain a solution and the solution is injected back into the stratum; pollution caused by sewage emission is avoided; simultaneously, the fresh water resource is saved. The preparation method disclosed by the invention comprises the following steps of: mixing 1000 parts by weight of monomer acrylamide solution with 2-10 parts by weight of hydrolytic agent to obtain a mixed solution, then, adjusting the temperature of the mixed solution to 8-12 DEG C, and continuously introducing nitrogen with the purity being above 99.9% into the mixed solution at the speed of 110-130 cubic metres per hour; and then, after introducing nitrogen for 25-35 min, adding 1-5 parts by weight of initiator into the mixed solution, carrying out polymerization reaction in the mixed solution, continuously introducing nitrogen for 50-100 min, thus obtaining the functional polymer mixed with sewage disclosed by the invention.

Description

technical field [0001] The invention relates to a sewage preparation functional polymer and a preparation method thereof. Background technique [0002] Polyacrylamide oil displacement agent is the only chemical used in large-scale industrialized polymer flooding to enhance oil recovery. Higher) preparation and the development process of produced sewage preparation. Partially hydrolyzed polyacrylamide is the most widely used polyacrylamide oil displacement agent, but partially hydrolyzed polyacrylamide is unstable in the formation and is prone to failure. At present, there are not many opinions on the failure mechanism of partially hydrolyzed polyacrylamide Consistent, it is mainly believed that due to the five major factors of heat, oxygen, shear, salinity, and microorganisms and their synergistic effects, it presents an extremely complex comprehensive result. In addition, the water content of oilfield production fluid is getting higher and higher, and the treatment of pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F120/56C08K3/22C09K8/588
Inventor 刘存辉胡玉国崔景盛徐东杜俊涛李雷振王志宏王毓琇尹华牟利剑胡广海王欢
Owner TIANJIN DAGANG OILFIELD BINGANG GRP BOHONG PETROLEUM CHEM
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