Pre-crosslinked gel swelling particle alkali-resistant profile control agent and preparation method and application thereof

A gel and pre-crosslinking technology, applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve problems such as reduction and achieve good industrial potential

Active Publication Date: 2015-09-23
DONGYING FANGLI CHEM CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] As mentioned above, although a variety of profile control agents that can be used in the field of petroleum exploration and development are disclosed in the prior art, with the increasing complexity of oil well geological conditions and the decreasing oil recovery rate, new profile control agents There is still a pressing need

Method used

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  • Pre-crosslinked gel swelling particle alkali-resistant profile control agent and preparation method and application thereof
  • Pre-crosslinked gel swelling particle alkali-resistant profile control agent and preparation method and application thereof
  • Pre-crosslinked gel swelling particle alkali-resistant profile control agent and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0061] Preparation Example 1: Preparation of Tough and Strong Elastic Particles

[0062] S1: preparing tough and strong elastic particles, which includes the following steps:

[0063] S1-1: Weigh C5 petroleum resin, add it to an appropriate amount of heptane, fully stir and dissolve, then filter to remove insoluble matter to obtain filtrate; add sulfur powder to the filtrate, seal and heat up to 140°C, react for 60 Minutes, then cooled to room temperature, natural volatilization of heptane, so as to obtain sulfur-modified C5 petroleum resin;

[0064] Wherein the mass ratio of the carbon five petroleum resin to the sulfur powder is 1:0.1.

[0065]S1-2: Add C9 petroleum resin, catalyst methanesulfonic acid and diallyl dimethyl ammonium chloride to an appropriate amount of trichlorethylene, stir and react at 50°C for 30 minutes, and naturally volatilize to no solvent to obtain cations Modified C9 petroleum resin;

[0066] Wherein, the mass ratio of the C9 petroleum resin, cata...

preparation example 2

[0070] Preparation Example 2: Preparation of Tough and Strong Elastic Particles

[0071] S1: preparing tough and strong elastic particles, which includes the following steps:

[0072] S1-1: Weigh C5 petroleum resin, add it to an appropriate amount of heptane, fully stir and dissolve, and then filter to remove insoluble matter to obtain the filtrate; add sulfur powder to the filtrate, seal and heat up to 160°C, and react for 45 Minutes, then cooled to room temperature, natural volatilization of heptane, so as to obtain sulfur-modified C5 petroleum resin;

[0073] Wherein the mass ratio of the carbon five petroleum resin to the sulfur powder is 1:0.4.

[0074] S1-2: Add C9 petroleum resin, catalyst methanesulfonic acid and diallyl dimethyl ammonium chloride to an appropriate amount of trichlorethylene, stir and react at 60°C for 30 minutes, and naturally volatilize to no solvent to obtain cations Modified C9 petroleum resin;

[0075] Wherein, the mass ratio of the C9 petroleu...

preparation example 3

[0079] Preparation Example 3: Preparation of Tough and Strong Elastic Particles

[0080] S1: preparing tough and strong elastic particles, which includes the following steps:

[0081] S1-1: Weigh C5 petroleum resin, add it to an appropriate amount of heptane, fully stir and dissolve, and then filter to remove insoluble matter to obtain the filtrate; add sulfur powder to the filtrate, seal and heat up to 180°C, and react for 30 Minutes, then cooled to room temperature, natural volatilization of heptane, so as to obtain sulfur-modified C5 petroleum resin;

[0082] Wherein the mass ratio of the carbon five petroleum resin and the sulfur powder is 1:0.3.

[0083] S1-2: Add C9 petroleum resin, catalyst methanesulfonic acid and diallyl dimethyl ammonium chloride to an appropriate amount of trichlorethylene, stir and react at 70°C for 30 minutes, and naturally volatilize to no solvent to obtain cations Modified C9 petroleum resin;

[0084] Wherein, the mass ratio of the C9 petrole...

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Abstract

The invention relates to a pre-crosslinked gel swelling particle alkali-resistant profile control agent and a preparation method and application thereof. The preparation method of the profile control agent includes the following steps: S1, preparing high-tenacity elastic particles; S2, oil-filling the high-tenacity elastic particles; S3, premixing materials; S4, performing polymerization reaction to obtain the pre-crosslinked gel swelling particle alkali-resistant profile control agent. Through coordinated effect of unique modifying of raw materials, proper selecting of components and setting of unique steps and process parameters of the preparation method, a target product best in effect is obtained. The profile control agent is excellent in mechanical performance, temperature resistance, mineralization resistance and alkali resistance and has good application prospect and industralization potential in the field of energy resource exploitation.

Description

technical field [0001] The present invention relates to a profile control agent used to improve petroleum products in oilfield exploitation and development, and its preparation method and application, more particularly to a pre-crosslinked gel body swelling particle alkali-resistant profile control agent and its preparation method and application The utility model belongs to the technical field of oil and gas development. Background technique [0002] With the long-term exploitation of oil in our country, the production decline and the oil-water ratio are generally reduced in various large oil fields at present, which puts forward an urgent requirement on how to improve the oil recovery rate. Especially in the middle and late stages of oilfield water flooding development, due to the heterogeneity of the formation, the injected water often rushes along the high permeability layer, and the low sweep degree of the middle and low permeability layers seriously affects the develop...

Claims

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Application Information

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IPC IPC(8): C08F291/00C08F220/56C08J3/24C08L45/02C08L51/00C08L57/02C08L23/08C08K3/06C08F289/00C08F226/02C08F214/06C09K8/512
Inventor 王立文周自阳
Owner DONGYING FANGLI CHEM CO LTD
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