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Oily sludge profile control agent and preparation method thereof

A profile control agent and sludge technology, which is applied in the field of oily sludge profile control agent and its preparation, can solve the problems that the performance of polymer jelly cannot be achieved, and achieve resource utilization, solve environmental problems, and good plugging effect Effect

Active Publication Date: 2016-01-20
SHAANXI HUAHAOXUAN NEW ENERGY TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the oily sludge profile control system formed with polymers, because the oily sludge contains a large amount of oil and salt, the performance of the polymer jelly cannot meet the requirements of practical applications

Method used

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  • Oily sludge profile control agent and preparation method thereof
  • Oily sludge profile control agent and preparation method thereof
  • Oily sludge profile control agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] To prepare 100mL profile control agent, the steps are as follows:

[0046] 1) Prepare a comb polymer KY-6 solution with a solution concentration of 100 mg / mL;

[0047] 2) The first cross-linking agent including urea 2.5g and formaldehyde 0.5g, the second cross-linking agent zirconium citrate 2mL and the emulsifier sodium oleate 1mL were respectively dissolved in water and configured into respective solutions, wherein the amount of the solvent was dissolved in Solute shall prevail;

[0048] 3) Mix the emulsifier solution with 10 g of oily sludge, and stir to disperse the oily sludge evenly in the emulsifier solution;

[0049] 4) Mix the comb polymer KY-6 solution, the first crosslinking agent solution and the second crosslinking agent solution to make it into a gel state, then adjust the gel to be weakly acidic to neutral, and adjust the pH value of the gel is 5;

[0050] 5) The oily sludge dispersed in the emulsifier solution obtained in step 3) is mixed with the jel...

Embodiment 2

[0052] To prepare 100mL profile control agent, the steps are as follows:

[0053] 1) Prepare a comb polymer KY-6 solution with a solution concentration of 600 mg / mL;

[0054] 2) The first cross-linking agent including urea 1g and formaldehyde 2g, the second cross-linking agent chromium trichloride 6mL and the emulsifier Tween 3mL were dissolved in water respectively, and were configured into respective solutions, wherein the amount of the solvent was based on the dissolved solute allow;

[0055] 3) Mix the emulsifier solution with 15g of oily sludge and stir to disperse the oily sludge evenly in the emulsifier solution;

[0056] 4) Mix the comb polymer KY-6 solution, the first crosslinking agent solution and the second crosslinking agent solution to make it into a gel state, then adjust the gel to be weakly acidic to neutral, and adjust the pH value of the gel is 7;

[0057] 5) The oily sludge dispersed in the emulsifier solution obtained in step 3) is mixed with the jelly ...

Embodiment 3

[0059] To prepare 100mL profile control agent, the steps are as follows:

[0060] 2) The first cross-linking agent including urea 2g and formaldehyde 1.2g, the second cross-linking agent aluminum citrate 4mL and the emulsifier sodium dodecylsulfonate 2mL were dissolved in water respectively and configured into respective solutions, wherein the solvent The amount is based on the dissolved solute;

[0061] 3) Mix the emulsifier solution with 3g of oily sludge, and stir, so that the oily sludge is evenly dispersed in the emulsifier solution;

[0062] 4) Mix the comb polymer KY-6 solution, the first crosslinking agent solution and the second crosslinking agent solution to make it into a gel state, then adjust the gel to be weakly acidic to neutral, and adjust the pH value of the gel is 6;

[0063] 5) The oily sludge dispersed in the emulsifier solution obtained in step 3) is mixed with the jelly obtained in step 4), and then placed in a water bath at 90 degrees Celsius and stirred...

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Abstract

The invention discloses an oily sludge profile control agent and a preparation method thereof. The oily sludge profile control agent comprises a comb-type polymer KY-6, a first crosslinking agent, a second crosslinking agent, an emulsifier, oily sludge and water. According to the invention, the comb-type polymer KY-6 is taken as the main agent, and the first crosslinking agent, the second crosslinking agent, the emulsifier and the oily sludge are taken as supporting materials, so that the profile control agent finally can have a good crosslinking effect. By utilizing the good compatibility of oily sludge and stratum, the formed profile control agent has strong sealing ability, and salt tolerant and anti-washout ability, can realize high-dose injection and deep profile control, and solves resourceful treatment of oily sludge.

Description

Technical field: [0001] The invention relates to a profile control agent for oil fields and a preparation method thereof, in particular to an oily sludge profile control agent and a preparation method thereof. Background technique: [0002] Oily sludge refers to oily solids and muddy substances that are left unused. After the oilfield production fluid is treated by degreasing and settling processes, a layer of black viscous liquid, that is, oily sludge, will gradually form at the bottom of the tank, and its main components are water, mud sand, colloidal asphaltenes and waxes. As my country's oil exploitation gradually enters a period of extremely high water content, with the use of multiple chemical additives for compound displacement, the output of oily sludge will continue to increase. Oily sludge has the characteristics of a large amount of production, high oil content, and high heavy oil components. In addition to a large amount of residual alkane oil, it also contains ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/512
CPCC09K8/512
Inventor 吴亚陈世军
Owner SHAANXI HUAHAOXUAN NEW ENERGY TECH DEV CO LTD