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A chemical reaction modified asphalt profile control water blocking agent and its preparation method and application

A technology of profile control water blocking agent and modified asphalt, which is applied in chemical instruments and methods, processing tar asphalt/petroleum asphalt/natural asphalt, tar asphalt/petroleum asphalt/natural asphalt, etc., can solve the problem of anti-corrosion Problems such as weak high-temperature resistance, strong specificity, and poor injectability have achieved significant technical effects and application potential effects

Active Publication Date: 2017-09-22
DAQING TIANMAN PETROCHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, these profile control and water shutoff technologies still have more or less certain defects, such as strong specificity (poor universality), weak high temperature resistance, poor erosion resistance, poor injectability, etc. Therefore, in order to develop A lot of in-depth research has been carried out on the new profile control and water blocking agent, and many achievements have been made, such as:

Method used

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  • A chemical reaction modified asphalt profile control water blocking agent and its preparation method and application
  • A chemical reaction modified asphalt profile control water blocking agent and its preparation method and application
  • A chemical reaction modified asphalt profile control water blocking agent and its preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0050] S1: Vulcanizing and modifying petroleum asphalt to obtain vulcanized modified petroleum asphalt, which includes the following steps:

[0051] S1-1: Add petroleum asphalt to an appropriate amount of heptane, stir thoroughly for 20 minutes to dissolve completely, and then filter to remove insoluble matter to obtain asphalt solution;

[0052] S1-2: Add bis(2,3-xylyl) disulfide, an organic sulfide, to the asphalt solution, react under closed stirring at 50°C for 6 hours, then cool naturally to room temperature, and completely volatilize the heptane, Thereby obtain described vulcanized modified petroleum asphalt;

[0053] Wherein, the mass ratio of the petroleum pitch in step S1-1 to the organic sulfide in step S1-2 is 1:0.05.

[0054] S2: Carry out cationic modification to petroleum asphalt to obtain cationic modified petroleum asphalt. This step is specifically as follows:

[0055] Add petroleum asphalt to an appropriate amount of trichlorethylene, stir fully to dissolve...

Embodiment 2

[0060] S1: Vulcanizing and modifying petroleum asphalt to obtain vulcanized modified petroleum asphalt, which includes the following steps:

[0061] S1-1: Add petroleum asphalt to an appropriate amount of heptane, stir thoroughly for 30 minutes to dissolve completely, and then filter to remove insoluble matter to obtain asphalt solution;

[0062] S1-2: Add bis(2,3-xylyl) disulfide, an organic sulfide, to the asphalt solution, react under closed stirring at 60°C for 5 hours, then cool naturally to room temperature, and completely volatilize the heptane, Thereby obtain described vulcanized modified petroleum asphalt;

[0063] Wherein, the mass ratio of the petroleum pitch in step S1-1 to the organic sulfide in step S1-2 is 1:0.07.

[0064] S2: Carry out cationic modification to petroleum asphalt to obtain cationic modified petroleum asphalt. This step is specifically as follows:

[0065] Add petroleum asphalt to an appropriate amount of trichlorethylene, stir to dissolve compl...

Embodiment 3

[0070] S1: Vulcanizing and modifying petroleum asphalt to obtain vulcanized modified petroleum asphalt, which includes the following steps:

[0071] S1-1: Add petroleum asphalt to an appropriate amount of heptane, stir thoroughly for 40 minutes to dissolve completely, and then filter to remove insoluble matter to obtain asphalt solution;

[0072] S1-2: Add organic sulfide bis(2,3-xylyl) disulfide to the asphalt solution, and react under closed stirring at 70°C for 4 hours, then cool naturally to room temperature, and completely volatilize the heptane, Thereby obtain described vulcanized modified petroleum asphalt;

[0073] Wherein, the mass ratio of the petroleum pitch in step S1-1 to the organic sulfide in step S1-2 is 1:0.1.

[0074] S2: Carry out cationic modification to petroleum asphalt to obtain cationic modified petroleum asphalt. This step is specifically as follows:

[0075]Add petroleum asphalt to an appropriate amount of trichlorethylene, stir to dissolve complete...

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Abstract

The invention relates to a chemical reactive modified asphalt profile modifying / water plugging agent and a preparation method and application of the profile modifying / water plugging agent. The preparation method comprises the following steps: S1, performing modification on petroleum asphalt by vulcanization to obtain sulphurized petroleum asphalt; S2, performing cationic modification on petroleum asphalt to obtain cation-modified petroleum asphalt; S3, adding the sulphurized petroleum asphalt and the cation-modified petroleum asphalt into naphtha, and then adding organic ammonium compounds, fully stirring for reaction for 40-60 min to obtain the chemical reactive modified asphalt profile modifying / water plugging agent. According to the chemical reactive modified asphalt profile modifying / water plugging agent and the preparation method and application of the profile modifying / water plugging agent, provided by the invention, by specific preparation steps, selection of components and technological parameters, the finally obtained profile modifying / water plugging agent has good plugging performance, erosion resistance property, high-temperature resistance and pH-resistance, and further has a good application prospect and industrial potential in the field of petroleum industry.

Description

technical field [0001] The present invention relates to a profile control agent composition for improving and enlarging the swept volume of injected fluid in oil layers in oil field exploitation and development, and further increasing oil production, as well as its preparation method and application, and more particularly relates to a chemical reaction modified asphalt profile control The water blocking agent and its preparation method and application belong to the technical field of oil and gas development. Background technique [0002] In the process of oil production, as the water injection development gradually enters the middle and later stages, the dominant large pores and ineffective water circulation are becoming more and more serious, the oil production of oil wells decreases, the water cut increases, and even water flooding occurs, but the use of profile control and water shutoff technology can effectively seal Advantageous large channels, start low-permeability la...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/514C10C3/02C10C3/00
CPCC09K8/514C10C3/005C10C3/026
Inventor 蔡福潮蔡庚霖
Owner DAQING TIANMAN PETROCHEM CO LTD
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