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A high-strength nano-blocking agent

A nano-blocking agent, high-strength technology, applied in chemical instruments and methods, drilling compositions, etc., to achieve good compressive and flexural strength, avoid agglomeration, and improve safety

Active Publication Date: 2020-12-18
北京宝丰春石油技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the technical problem of further improving the anti-compression and anti-bending effects of nano-blocking agents in the prior art, the present invention provides a high-strength nano-blocking agent that can maintain a good plugging effect

Method used

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  • A high-strength nano-blocking agent
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  • A high-strength nano-blocking agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1: A kind of high-strength nano-blocking agent, including the following raw materials in parts by weight: 10 parts of a mixture of nano-silicon oxide particles, nano-ferric oxide particles, and nano-calcium carbonate particles, and 2 parts of a composite modifier , 20 parts of a mixture of acrylamide and methyl methacrylate nanoparticles, 12 parts of flame retardant, 30 parts of deionized water, 10 parts of isopropanol, 5 parts of sodium bisulfite and ammonium persulfate, of which 10-30nm A mixture of nano-silicon oxide particles, nano-ferric oxide particles, and nano-calcium carbonate particles with two different particle sizes of 100-200nm, and two types of nano-silicon oxide particles and nano-ferric oxide particles with different particle sizes , the weight ratio of the mixture of nano-calcium carbonate particles is 1:1, the composite modifier is made up of modifier A and modifier B, the modifier A and modifier B in the composite modifier The mass ratio i...

Embodiment 2

[0040] Embodiment 2: A kind of high-strength nano-blocking agent, including the following raw materials in proportions by weight: 55 parts of a mixture of nano-silicon oxide particles, nano-ferric oxide particles, and nano-calcium carbonate particles, and 8 parts of composite modifiers , 5 parts of a mixture of acrylamide and methyl methacrylate nanoparticles, 30 parts of flame retardant, 50 parts of deionized water, 30 parts of isopropanol, 8 parts of sodium bisulfite and ammonium persulfate, of which 10-30nm A mixture of nano-silicon oxide particles, nano-ferric oxide particles, and nano-calcium carbonate particles with two different particle sizes of 100-200nm, and two types of nano-silicon oxide particles and nano-ferric oxide particles with different particle sizes , the weight ratio of the mixture of nano-calcium carbonate particles is 1:1, the composite modifier is made up of modifier A and modifier B, the modifier A and modifier B in the composite modifier The mass ratio...

Embodiment 3

[0050] Embodiment 3: A kind of high-strength nano-blocking agent, including the following raw materials in proportions by weight: 30 parts of a mixture of nano-silicon oxide particles, nano-ferric oxide particles, and nano-calcium carbonate particles, and 5 parts of composite modifiers , 10 parts of a mixture of acrylamide and methyl methacrylate nanoparticles, 20 parts of flame retardant, 40 parts of deionized water, 20 parts of isopropanol, 6 parts of sodium bisulfite and ammonium persulfate, of which 10-30nm A mixture of nano-silicon oxide particles, nano-ferric oxide particles, and nano-calcium carbonate particles with two different particle sizes of 100-200nm, and two types of nano-silicon oxide particles and nano-ferric oxide particles with different particle sizes , the weight ratio of the mixture of nano-calcium carbonate particles is 1:1, the composite modifier is made up of modifier A and modifier B, the modifier A and modifier B in the composite modifier The mass ra...

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Abstract

The invention discloses a high-strength nano plugging agent comprising the following raw materials in parts by weight: 10-55 parts of inorganic nanoparticles, 2-8 parts of a composite modifier, 5-20 parts of organic nanoparticles, 12-30 parts of a flame retardant and 30-50 parts of deionized water., wherein the inorganic nanoparticles adopt two particle size ranges of 10 to 30 nm and 100 to 200 nm; the inorganic nanoparticles with different particle sizes are mixed to serve as a raw material to enhance the strength of the plugging agent, and the composite modifier is added, so that the nanoparticles are not easy to agglomerate in the preparation process, the inorganic nanoparticles and the organic nanoparticles are highly polymerized, the strength of the prepared nano plugging agent is further enhanced, and a better plugging effect is obtained.

Description

technical field [0001] The invention belongs to the field of functional nanometer materials for oil and gas drilling, and more specifically relates to a high-strength nanometer plugging agent. Background technique [0002] In the process of oilfield development, due to the development of reservoir fractures or fracturing in production, there are fractures in most oil reservoirs. These fractures provide good seepage channels for crude oil production, but at the same time, too much formation water flows into production wells, resulting in The high water content of the produced fluid and the low utilization rate of injected water lead to low oil recovery. In order to improve the above problems, plugging agents are widely used in reservoirs. At the same time, for the drilling fluid with strong suppression ability, the transmission of hydraulic pressure through micro-fractures is one of the main reasons for the instability of the wellbore wall, so it is necessary to strengthen t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/467
CPCC09K8/467
Inventor 牛文智
Owner 北京宝丰春石油技术有限公司