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A kind of profile control agent and its synthesis method and application

A synthesis method and profile control agent technology, which is applied in the field of profile control agent and its synthesis, can solve the problems of complex synthesis, poor high temperature resistance, and large strength damage of profile control agent, so as to avoid environmental pollution, high temperature resistance, The effect of improving the blocking ability

Active Publication Date: 2017-08-22
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to solve the problems in the prior art that the process of synthesizing the profile control agent has great damage to the strength of the profile control agent, the synthesis is complicated and the high temperature resistance is poor, and to provide a profile control agent and its synthesis method and application

Method used

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Examples

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preparation example Construction

[0018] The invention provides a method for synthesizing a profile control agent, the method comprising the following steps: (1) performing bulk polymerization after mixing the oil production sludge with the first water phase, granulating and drying the rubber block obtained by the bulk polymerization , crushing and sieving to obtain solid particles of different particle sizes, wherein the first aqueous phase contains polymerized monomers, the first crosslinking agent and the first water-soluble initiator; (2) combining the solid particles with the second The two water phases are mixed to obtain granular solids, the particle size of which is larger than that of the solid particles, wherein the second water phase contains polymerizable monomers, a second crosslinking agent and a second water-soluble initiator (3) carry out emulsion polymerization after mixing the granular solid with the oil phase, and separate the emulsion polymerization product to obtain the profile control agen...

Embodiment 1

[0046] This example is used to illustrate the synthesis method of the profile control agent provided by the present invention.

[0047] (1) Add 10g of deionized water, 7g of acrylamide, 3g of 2-acrylamido-2-methylpropanesulfonic acid, and 0.08g of N,N'-methylenebisacrylamide into a stirred container, and stir to dissolve; After adding 30% by weight of NaOH solution to adjust the pH to 4, add 0.050g of K 2 S 2 o 8 Dissolve, feed nitrogen for 20 minutes to obtain the first aqueous phase;

[0048] Add 5g of oil production sludge and an appropriate amount of water into a reactor equipped with a stirring, reflux condensing device, and a nitrogen conduit, and stir to form a slurry. Under the protection of nitrogen, quickly add the above-mentioned first water phase into the reactor, mix it with the mud in it, stop stirring when the temperature rises to 40°C, and continue to heat up to 50°C for bulk polymerization for 2 hours. After the reaction is completed, the product gel Block...

Embodiment 2

[0054] This example is used to illustrate the synthesis method of the profile control agent provided by the present invention.

[0055] (1) Add 15g of deionized water, 5g of acrylamide, 5g of 2-acrylamido-2-methylpropanesulfonic acid, and 0.01g of N,N'-methylenebisacrylamide into a stirred container, and stir to dissolve; After adding 30% by weight of NaOH solution to adjust the pH to 7; adding 0.01g of K 2 S 2 o 8 Dissolve, feed nitrogen for 20 minutes to obtain the first aqueous phase;

[0056]Add 5g of oil production sludge and an appropriate amount of water into a reactor with a stirring, reflux condensing device, and a nitrogen conduit, and stir to form a slurry. Under the protection of nitrogen, quickly add the above-mentioned first water phase to the reactor, and stir to raise the temperature to 40 Stop stirring at ℃, continue to heat up to 50 ℃ to carry out bulk polymerization reaction for 4 hours, after the reaction is completed, the product rubber block is granula...

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PUM

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Abstract

The invention discloses a profile control agent and its synthesis method and application. The synthesis method of the profile control agent includes: (1) performing bulk polymerization after mixing the oil production sludge with the first water phase, granulating, drying, crushing and sieving the rubber block obtained by the bulk polymerization to obtain different granules (2) mixing the solid particles with the second water phase to obtain a granular solid whose particle diameter is greater than that of the solid particles; (3) mixing the granular solid After being mixed with the oil phase, the emulsion polymerization is carried out, and the emulsion polymerization product is separated to obtain the profile control agent; the oil production sludge is a product obtained by drying the sludge generated in the process of oil field water treatment after deoiling. The profile control agent synthesized by the method can obtain different particle sizes, and the obtained profile control agent has better strength and performance effects.

Description

technical field [0001] The present invention relates to a profile control agent and its synthesis method and application, in particular to a profile control agent synthesis method, the profile control agent synthesized by the method and the application of the profile control agent in oil well production. Background technique [0002] The profile control technology of water injection wells is a major technical measure for oil stabilization and water control when oilfield development enters the medium-high water cut period. [0003] For some special types of reservoirs that have been put into development in recent years, such as low-permeability reservoirs, ultra-low-permeability reservoirs, and high-temperature reservoirs, they gradually enter the medium-high water cut period after water injection development. For such reservoirs, it is difficult to meet the profile control requirements of the oilfield by using the existing profile control methods. [0004] Among the existin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/56C08F220/58C08F222/38C08F2/30C08F2/02C08F6/26C08K11/00C09K8/516
Inventor 黄娟江建林
Owner CHINA PETROLEUM & CHEM CORP
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