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A mos-based 2 Method for preparing fracturing fluid from nanosheets

A nanosheet and fracturing fluid technology, applied in the field of fracturing fluid, can solve the problems of alkali-sensitive reservoir secondary damage, limitations, and imperfect acidic fracturing fluid technology, and achieve obvious speed-up and efficiency-enhancing effects and reduce requirements , Improve the effect of sand carrying capacity

Active Publication Date: 2021-10-15
河南郸城顺兴石油助剂有限公司 +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing alkaline fracturing fluid system will cause secondary damage to alkali-sensitive reservoirs, while some technologies for acidic fracturing fluids are not perfect. Although there are successful cases in field application and laboratory research, they are only limited to low-temperature shallow wells (≤90℃)

Method used

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  • A mos-based <sub>2</sub> Method for preparing fracturing fluid from nanosheets
  • A mos-based <sub>2</sub> Method for preparing fracturing fluid from nanosheets
  • A mos-based <sub>2</sub> Method for preparing fracturing fluid from nanosheets

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Embodiment 1

[0028] (1) Preparation of modified guar powder:

[0029] Weigh 10g of guar powder, add it into a 100mL three-necked flask equipped with a stirring paddle, a thermometer and a reflux condenser; add 50mL of 95% ethanol for dispersion, then add 0.05g of catalyst NaOH, and stir for 0.5h under a constant temperature water bath at 45°C ; Add a certain amount of modifier octadecyl glycidyl ether to the solution, raise the temperature to 55°C, and stir for 4.5h. Cool after the reaction, filter with suction, and dry at low temperature (60°C) to obtain modified guar powder;

[0030] (2) Preparation of base liquid:

[0031] Pour 1000mL tap water into the mixer, turn on the mixer (800r / min), slowly add a certain amount of carboxymethyl hydroxypropyl guar gum into the mixer, after the liquid becomes viscous, use a pipette Pipette a certain amount of high-efficiency synergist G-ZP and clay stabilizer NW-1 into the mixer, adjust the speed of the mixer to 1000r / min and keep stirring for 10 ...

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Abstract

The invention discloses a MoS-based 2 The method for preparing fracturing fluid from nanosheets relates to the field of fracturing fluid technology. Firstly, modified guar powder is prepared from guar powder and a modifying agent, and is stabilized by carboxymethylhydroxypropyl guar gum, high-efficiency synergist and clay. Preparation of base liquid with molybdenum and sulfur sources to prepare MoS 2 nanosheets, and finally compounded to prepare fracturing fluid. The fracturing fluid prepared by the invention has good sand-carrying and suspended sand performance, good compatibility, easy gel breaking, low fluid loss coefficient, small liquid fluid loss, little damage to oil and gas layers, small friction loss, intelligent oil finding, It can realize the integration of fracturing and oil production, and is suitable for ultra-deep reservoirs with a temperature of 300°C; on-site mixing, eliminating the need for pre-mixing and continuous mixing vehicles, and the effect of increasing speed and efficiency is obvious, which can meet large-scale fracturing construction demand.

Description

Technical field: [0001] The invention relates to the field of fracturing fluid technology, in particular to a MoS-based 2 A method for preparing fracturing fluid from nanosheets. Background technique: [0002] In recent years, with the development of domestic oil and gas reservoir stimulation technology, oil and gas engineers have become more and more sophisticated in their understanding of the modified reservoir, the stimulation measures have become more targeted, and the technical requirements for various well fluids have become more and more high. The hydraulic fracturing of the oil layer is to use the surface high-pressure pump group to inject the high-viscosity fluid into the well at a displacement that greatly exceeds the absorption capacity of the formation, and then form a high pressure near the bottom of the well. When this pressure exceeds the fracture pressure of the formation rock near the bottom of the well, fractures are formed in the formation. The fluid wi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/68
CPCC09K8/665C09K8/68C09K8/90C09K2208/34
Inventor 侯吉瑞屈鸣许杰黄保州张华南赵家祥许海洋梁方伟
Owner 河南郸城顺兴石油助剂有限公司
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