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Preparation method of halloysite nanotube-surfactant composite intercalated montmorillonite fluid loss reducer for drilling fluid

A technology of halloysite nanotubes and surfactants, applied in nanotechnology, nanotechnology, nanotechnology, etc. for materials and surface science, can solve problems such as poor temperature resistance, and improve the degree of peeling and nanotechnology High and improve the effect of fluid loss reduction

Active Publication Date: 2022-07-05
中石化石油工程技术服务有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of poor temperature resistance of fluid loss control agents commonly used in current water-based drilling fluids, and proposes a method of halloysite nanotube-surfactant composite intercalation montmorillonite fluid loss control agent for drilling fluids. preparation

Method used

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  • Preparation method of halloysite nanotube-surfactant composite intercalated montmorillonite fluid loss reducer for drilling fluid

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Experimental program
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Effect test

Embodiment 1

[0042] 1) Preparation of pre-intercalated halloysite nanotubes: (1) 800g halloysite nanotubes, 1000g deionized water and 30g NaOH were added to the high pressure reactor, and the alkalization reaction was carried out for 30min; (2) in the above reactor Add 20g potassium chloride and 30g sodium tetradecyl sulfonate in turn, raise the temperature of the system to 60°C, and perform a pre-intercalation reaction for 60min under the condition that the rotating speed is 2000rpm; (3) after the reaction is completed, turn the above system to 60°C. Put it into a vacuum filter press, filter it three times, wash it three times with deionized water, remove all the solvent, and further remove the remaining solvent by a rotary evaporator, and the obtained powder is the pre-intercalated halloysite nanotube.

[0043]2) Preparation of halloysite nanotube-surfactant composite intercalated montmorillonite fluid loss reducer for drilling fluid: (1) 1200g montmorillonite, 3000g deionized water and 3...

Embodiment 2

[0045] 1) Preparation of pre-intercalated halloysite nanotubes: (1) 1000g halloysite nanotubes, 1200g deionized water and 40g NaOH were added to the high pressure reactor, and the alkalization reaction was carried out for 40min; (2) in the above reactor Add 25g potassium chloride and 40g sodium hexadecyl sulfonate in turn, raise the temperature of the system to 70°C, and perform a pre-intercalation reaction for 80min under the condition that the rotating speed is 2000rpm; (3) after the reaction is completed, turn the above system into Put it into a vacuum filter press, filter it three times, wash it three times with deionized water, remove all the solvent, and further remove the remaining solvent by a rotary evaporator, and the obtained powder is the pre-intercalated halloysite nanotube.

[0046] 2) Preparation of halloysite nanotube-surfactant composite intercalated montmorillonite fluid loss reducer for drilling fluid: (1) 1350g montmorillonite, 4000g deionized water and 40 N...

Embodiment 3

[0048] 1) Preparation of pre-intercalated halloysite nanotubes: (1) 1200g halloysite nanotubes, 1500g deionized water and 50g NaOH were added to the high pressure reactor, and the alkalization reaction was carried out for 50min; (2) in the above reactor Add 30g potassium chloride and 50g sodium octadecyl sulfonate in turn, raise the temperature of the system to 80°C, and perform a pre-intercalation reaction for 90min under the condition that the rotating speed is 2000rpm; (3) after the reaction, turn the above system into Put it into a vacuum filter press, filter it three times, wash it three times with deionized water, remove all the solvent, and further remove the remaining solvent by a rotary evaporator, and the obtained powder is the pre-intercalated halloysite nanotube.

[0049] 2) Preparation of halloysite nanotube-surfactant composite intercalated montmorillonite fluid loss reducer for drilling fluid: (1) 1500g montmorillonite, 5000g deionized water and 50 NaOH were sequ...

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Abstract

The invention discloses a preparation method of a halloysite nanotube-surfactant composite intercalation montmorillonite fluid loss reducer for drilling fluids. The components mainly include montmorillonite, NaOH, quaternary ammonium salt surfactant, Intercalated halloysite nanotubes, nano-silica, dispersion stabilizer. In the present invention, the halloysite is pre-intercalated by potassium chloride and sulfonate surfactant, and then inserted into the montmorillonite layer by chemical competitive adsorption and quaternary ammonium salt surfactant, and it is peeled off into montmorillonite. The nano-layer sheet promotes its dispersion in the drilling fluid through cationic surfactants, and also acts synergistically with nano-silica to improve its plugging ability on the well wall, thereby reducing its high-temperature fluid loss.

Description

technical field [0001] The invention relates to a fluid loss control agent used in drilling fluid in oil and gas exploration and development, in particular, in the drilling process, the entry of drilling fluid filtrate into formation is minimized, and complex accidents are avoided. Background technique [0002] At present, in the process of oil and gas exploration and development at home and abroad, it is gradually advancing to complex oil and gas reservoirs such as shale oil and gas, tight oil and gas, with complex formation physical properties and variable stress. If too much filtrate enters the formation during the drilling process, it may cause Accidents such as stuck pipe, wellbore collapse, etc. In order to reduce the occurrence of the above-mentioned accidents, it is necessary to add fluid loss reducers with excellent performance into the drilling fluid. The conventional fluid loss reducers are natural minerals, natural polymers and their derivatives, and synthetic co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09C1/42C09C3/06C09C3/08B82Y30/00B82Y40/00C09K8/03C09K8/14C09K8/42C09K8/504
CPCC09C1/42C09C3/006C09C3/06C09C3/08B82Y30/00B82Y40/00C09K8/032C09K8/145C09K8/426C09K8/5045C09K2208/10
Inventor 蓝强夏晔周晓蕾徐运波郑成胜姜春丽李蕾王俊杨龙波经淑惠
Owner 中石化石油工程技术服务有限公司
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