Microcapsule type speed increasing and sticking preventing lubricant and preparation method thereof

A technology of microcapsules and lubricants, which is applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve the problems of cost increase, inability to perform fixed-point lubrication, and drill sticking, so as to reduce drilling costs and prevent sticking. , Improve the effect of drilling speed

Active Publication Date: 2016-12-21
BETTER OILFIELD TECH
View PDF5 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Conventional liquid or solid lubricants mainly reduce frictional resistance by diluting or interfering with the properties of the drilling fluid, so this will change the original properties of the drilling fluid, and it is necessary to add other chemical agents to restore the original properties of the drilling fluid. On the one hand, it will affect the drilling fluid. stability of the drilling fluid, on the other hand, the cost of maintenance and treatment of the drilling fluid is increased
[0004] Conventional liquid or solid lubricants act on the entire wellbore and friction points, and cannot play the role of fixed-point lubrication, and the concentration of conventional lubricants will continue to decrease over time, so it is necessary to increase the overall amount of lubricants to meet the lubrication requirements. And when the concentration is higher, it will have a negative impact on the rheology of the drilling fluid
[0005] The mechanism and mode of action of conventional lubricants determine that there are many limitations, such as pipe sticking, excessive resistance, excessive torque, damage to mud rheology, low drilling speed, and prolonged drilling downtime, etc. These will lead to an increase in cost
[0006] In addition, commonly used mineral oil lubricants also have problems such as toxicity, high fluorescence, and environmental pollution.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Prepare microcapsule type speed-increasing anti-seize lubricant according to the following steps:

[0028] (1) Preparation of lubricating oil: Prepare the following raw materials in parts by mass: 30 parts of plant asphalt, 20 parts of sorbitan diester, 40 parts of B20 biodiesel, 10 parts of polyoxyethylene lauryl ether; Environmentally friendly lubricating oil is prepared by compounding raw materials;

[0029] (2) Preparation of capsule wall prepolymer: Under the protection of nitrogen, add a certain amount of starch and distilled water into a four-neck flask, gelatinize at a temperature above 80°C for 30 minutes, and at the same time stir it electrically to make it uniform, and control the reaction temperature to 40°C. Then add 2-acrylamide-2-methylpropanesulfonic acid, dimethyl diallyl ammonium chloride and ammonium cerium nitrate successively, stir and react for 2 hours, and obtain a total concentration of 3% capsule wall prepolymer; wherein , The mass ratio of dim...

Embodiment 2

[0032] Prepare microcapsule type speed-increasing anti-seize lubricant according to the following steps:

[0033] (1) Preparation of lubricating oil: Prepare the following raw materials in parts by mass: 30 parts of plant asphalt, 20 parts of sorbitan diester, 40 parts of B20 biodiesel, and 10 parts of polyoxyethylene lauryl ether; The raw materials are compounded to produce environment-friendly lubricating oil;

[0034] (2) Preparation of capsule wall prepolymer: Under the protection of nitrogen, add a certain amount of starch and distilled water into a four-neck flask, gelatinize at a temperature above 80°C for 30 minutes, and at the same time stir it electrically to make it uniform, and control the reaction temperature to 40°C. Then add 2-acrylamide-2-methylpropanesulfonic acid, dimethyl diallyl ammonium chloride and ammonium cerium nitrate successively, stir and react for 2 hours, and obtain a total concentration of 3% capsule wall prepolymer; wherein , The mass ratio of ...

Embodiment 3

[0037] Prepare microcapsule type speed-increasing anti-seize lubricant according to the following steps:

[0038] (1) Preparation of lubricating oil: Prepare the following raw materials in parts by mass: 25 parts of plant asphalt, 15 parts of sorbitan monooleate, 50 parts of B20 biodiesel, and 8 parts of lauryl polyvinyl ether; using the above raw materials Environment-friendly lubricating oil is prepared by compounding method;

[0039] (2) Preparation of capsule wall prepolymer: Under the protection of nitrogen, add a certain amount of starch and distilled water into a four-neck flask, gelatinize at a temperature above 80°C for 30 minutes, and at the same time stir it electrically to make it uniform, and control the reaction temperature to 35°C. Then add 2-acrylamide-2-methylpropanesulfonic acid, dimethyl diallyl ammonium chloride and ammonium cerium nitrate successively, stir and react for 1.5 hours to obtain a total concentration of 5% capsule wall prepolymer; wherein , Th...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
Login to view more

Abstract

The invention discloses a microcapsule type speed increasing and sticking preventing lubricant. The lubricant is composed of a plurality of microcapsules, every microcapsule comprises a capsule wall and a capsule core placed in the capsule wall, the mechanical strength of the capsule walls is 100-1000 g / cm<2>, and the capsule cores are lubricating oil. The invention also discloses a preparation method of the microcapsule type speed increasing and sticking preventing lubricant. The method comprises the following steps: preparing the lubricating oil from asphalt, a polyol nonionic emulsifier, biodiesel and a surfactant by adopting a compounding technology; preparing the capsule walls from starch, 2-acrylamide-2-methylpropanesulfonic acid, dimethyldiallylammonium chloride and ammonium cerium nitrate; and preparing the microcapsule type speed increasing and sticking preventing lubricant. The lubricant can freely flow and keep inertia in a drilling fluid system, and has no influences on the chemical properties of the drilling fluid; and the microcapsules do not act on a whole shaft, and have a lubricating effect only when the capsules are broken after being pressed, so only a small amount of the lubricant is used to greatly reduce the torque and improve the drilling speed.

Description

technical field [0001] The invention relates to a lubricant for drilling fluid and a preparation method, in particular to a microcapsule type speed-increasing and anti-seize lubricant and a preparation method. Background technique [0002] Drilling fluid lubricant is an important chemical treatment agent for drilling fluid. At present, the conventional drilling fluid lubricants include mineral oil, modified animal and vegetable oil, surfactant, polymer alcohol and other liquid lubricants and graphite, plastic small Balls, glass beads and other solid lubricants. [0003] Conventional liquid or solid lubricants mainly reduce frictional resistance by diluting or interfering with the performance of drilling fluid, so this will change the original performance of drilling fluid, and it is necessary to add other chemical agents to restore the original performance of drilling fluid. On the one hand, it will affect the drilling fluid. On the other hand, it increases the maintenance ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/035
CPCC09K8/035C09K2208/02C09K2208/34
Inventor 陈洋周长清郑海洪
Owner BETTER OILFIELD TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap