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A kind of thickener suspoemulsion for fracturing fluid and preparation method thereof

A technology of suspending emulsion and thickener, which is applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve the problems of continuous mixing and large displacement construction, low solid content of polyacrylamide, and easy occurrence of "fish eyes". " and other problems, to achieve the effect of improving the suspension performance, shortening the dissolution time, and improving the dissolution performance

Active Publication Date: 2021-11-16
SHANDONG NUOER BIOLOGICAL TECH
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Problems solved by technology

However, the dry powder polyacrylamide thickener takes too long to dissolve, has poor timeliness, is prone to dust pollution, and is prone to "fish eyes" during the dissolution process, which makes it unable to meet the requirements of continuous mixing and large-volume construction; emulsion Although the dissolution time of polyacrylamide-like thickeners is short, the solid content of polyacrylamide is low, which makes the stability poor

Method used

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  • A kind of thickener suspoemulsion for fracturing fluid and preparation method thereof
  • A kind of thickener suspoemulsion for fracturing fluid and preparation method thereof
  • A kind of thickener suspoemulsion for fracturing fluid and preparation method thereof

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preparation example Construction

[0033] Such as figure 1 As shown, the invention provides a kind of preparation method of thickener suspoemulsion for fracturing fluid, and this preparation method comprises the steps:

[0034] (1) Add polyacrylamide powder, anti-adhesive agent and surfactant to the ball mill in sequence, and obtain mixed powder after ball milling;

[0035] (2) Add the first suspending agent, the second suspending agent, the anti-sedimentation agent, and the structure regulator into the reactor in sequence and stir to obtain a mixed solution;

[0036] (3) Add the mixed powder and emulsifier in sequence to the mixed solution and stir to obtain the thickener suspoemulsion.

[0037] It should be noted that the above steps (1) to (2) are all carried out at normal temperature (usually 25° C.), that is, without heating.

[0038] The solid content of polyacrylamide in the thickener suspoemulsion obtained by the present invention is higher, reaching 55%-60%. The time is shorter, so the amount of thi...

Embodiment 1

[0085] (1) Add 55 parts of polyacrylamide powder (particle size ≤ 125 μm) and 1 part of anti-sticking agent (calcium stearate, particle size ≤ 125 μm) into the tubular ball mill, turn on the ball mill for 30 minutes, and then add Surfactant 0.6 parts (sodium dodecylsulfonate), and continue ball milling for 30 minutes to obtain mixed powder;

[0086] (2) Add 35 parts of the first suspending agent (No. 5 white oil) and 8 parts of the second suspending agent (amyl alcohol) into the reactor (reactor), turn on the mixer of the reactor, stir at 50Hz for 30min to disperse and mix Finally, add 2 parts of anti-precipitation agent (organic bentonite), continue to stir at 50 Hz for 30 minutes to disperse and mix, then add 0.6 parts of structure regulator (diethylene glycol ether), and continue to stir at 50 Hz for 30 minutes to disperse and mix. to obtain a mixed solution;

[0087] (3) Add the mixed powder obtained in step (1) to the mixed solution in step (2), stir at 50 Hz for 60 minu...

Embodiment 2

[0089] (1) Add 58 parts of polyacrylamide powder (particle size ≤ 125 μm) and 1.2 parts of anti-sticking agent (magnesium stearate, particle size ≤ 125 μm) into the tubular ball mill, turn on the ball mill for 30 minutes, and then add Surfactant 0.8 part (sodium lauryl sulfate), and continue ball milling treatment for 30min to obtain mixed powder;

[0090] (2) Add 33 parts of the first suspending agent (No. 3 white oil) and 10 parts of the second suspending agent (hexanol) into the reactor (reactor), turn on the mixer of the reactor, stir at 50 Hz for 30 minutes to disperse and mix Finally, add 1.5 parts of anti-precipitation agent (polyamide modified hydrogenated castor oil), continue stirring at 50 Hz for 30 minutes to disperse and mix, then add 0.8 parts of structure regulator (diethylene glycol butyl ether), continue to stir at 50 Hz Stir for 30 minutes to disperse and mix to obtain a mixed solution;

[0091] (3) Add the mixed powder obtained in step (1) to the mixed solu...

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Abstract

The invention provides a thickener suspending emulsion for fracturing fluid and a preparation method thereof, which is applied in the technical field of petroleum exploitation. The method comprises: sequentially adding polyacrylamide powder, anti-sticking agent and surfactant into a ball mill, and performing After ball milling, the mixed powder is obtained; the first suspending agent, the second suspending agent, the anti-sedimentation agent, and the structure regulator are sequentially added to the reactor and stirred to obtain a mixed solution; the mixed solution is sequentially added to the mixed solution. Powder and emulsifier are stirred and mixed to obtain the thickener suspoemulsion. The thickener suspend emulsion for fracturing fluid prepared by the invention has better solubility and higher stability, and is suitable for continuous mixing and large-displacement construction.

Description

technical field [0001] The invention relates to the technical field of petroleum exploitation, in particular to a thickener suspend emulsion for fracturing fluid and a preparation method thereof. Background technique [0002] Hydraulic fracturing stimulation technology is an effective method to improve oil and gas reservoirs, especially an important measure to increase well production and water injection development. Fracturing can form fractures with a certain size and conductivity in the formation, and its effect on the stimulation of oil and gas reservoirs depends on the performance of the fracturing fluid. Therefore, the quality of fracturing fluid has become a key factor affecting the success or failure of fracturing construction. [0003] At present, the most commonly used fracturing fluids at home and abroad are mainly water-based fracturing fluids that use natural polysaccharides and their derivatives and synthetic polymers as thickeners, and have been widely used i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/68C09K8/88
CPCC09K8/68C09K8/685C09K8/882C09K8/887
Inventor 荣敏杰王成辉许永升于庆华荣帅帅
Owner SHANDONG NUOER BIOLOGICAL TECH
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