Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Self thermogenesis chemical temperature raising agent for acid thick oil reservoir and use method of agent

A self-generating heat technology for heavy oil reservoirs, applied in chemical instruments and methods, drilling compositions, etc., can solve problems such as difficult to achieve self-generated heat raising of porous media in reservoirs, achieve good carrying injection effect, temperature sensitive High triggering and heat release efficiency

Active Publication Date: 2014-10-08
CHINA UNIV OF PETROLEUM (EAST CHINA) +1
View PDF6 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, self-generated heat systems widely used in oilfields include nitrite and ammonium salt heat-generated systems, H 2 o 2 Heat generation system and polyhydroxy aldehyde oxidation heat generation system are mostly used in fracturing fluid, wellbore heat generation and wax removal due to their heat release efficiency, injection safety and stability. self-generated heat

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Self thermogenesis chemical temperature raising agent for acid thick oil reservoir and use method of agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The self-generating chemical temperature-raising agent for acidic heavy oil reservoirs in this embodiment includes a heat-generating agent and a triggering agent, and the heat-generating agent includes magnesium powder with a particle size not greater than 400 mesh and a coating layer for wrapping the magnesium powder , the triggering agent is a particle size not greater than 400 mesh P 2 o 5 powder, magnesium powder and P 2 o 5 The mass ratio of the powder is 1:1.0, and the coating layer is a paraffin wax coating layer or a magnesium stearate coating layer.

[0038] When the coating layer is a paraffin wax coating layer, the preparation method of the heat generating agent comprises the following steps:

[0039] Step 1. Add paraffin to cyclohexane under stirring conditions at 65°C until completely melted to obtain a coating solution with a mass concentration of paraffin wax of 20%. Add the magnesium powder into the coating solution at a ratio of 4:1, and disperse at...

Embodiment 2

[0052] The self-generating chemical temperature-raising agent for acidic heavy oil reservoirs in this embodiment includes a heat-generating agent and a triggering agent, and the heat-generating agent includes magnesium powder with a particle size not greater than 400 mesh and a coating layer for wrapping the magnesium powder , the triggering agent is a particle size not greater than 400 mesh P 2 o 5 powder, magnesium powder and P 2 o 5 The mass ratio of powder is 1:2.0, and described coating is paraffin coating or magnesium stearate coating;

[0053] When the coating layer is a paraffin wax coating layer, the preparation method of the heat generating agent comprises the following steps:

[0054] Step 1. Add paraffin to cyclohexane under stirring conditions at 70°C until completely melted to obtain a coating solution with a mass concentration of paraffin wax of 40%. Add the magnesium powder into the coating solution at a ratio of 6:1, and disperse at a constant temperature ...

Embodiment 3

[0067] The self-generating chemical temperature-raising agent for acidic heavy oil reservoirs in this embodiment includes a heat-generating agent and a triggering agent, and the heat-generating agent includes magnesium powder with a particle size not greater than 400 mesh and a coating layer for wrapping the magnesium powder , the triggering agent is a particle size not greater than 400 mesh P 2 o 5 powder, magnesium powder and P 2 o 5 The mass ratio of powder is 1:1.5, and described coating is paraffin coating or magnesium stearate coating;

[0068] When the coating layer is a paraffin wax coating layer, the preparation method of the heat generating agent comprises the following steps:

[0069] Step 1, under the stirring condition of 68 ℃, add paraffin in cyclohexane until completely melted, obtain the coating solution that the mass concentration of paraffin is 25%, then under the constant stirring condition of temperature, according to the quality of magnesium powder and ...

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 sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a self thermogenesis chemical temperature raising agent for an acid thick oil reservoir. The agent comprises a thermogenesis agent and a triggering agent, wherein the thermogenesis agent comprises magnesium powder with the granularity of not more than 400 meshes, and a coating layer for coating the magnesium powder, the triggering agent is P2O5 powder with the granularity of not more than 400 meshes, the mass ratio of the magnesium powder to the P2O5 powder is 1 to (1.0-2.0), and the coating layer is a paraffin coating layer or a magnesium stearate coating layer. In addition, the invention also discloses a use method of the self thermogenesis chemical temperature raising agent. The self thermogenesis chemical temperature raising agent has the advantages of high thermogenesis efficiency, safe and reliable transport reservoir and injection process, rapid thermosensitivity triggering, good carrying injection effect and the like, is applicable to self thermogenesis temperature raising synergia development of the interior of the acid thick oil reservoir, and is applicable to the thick oil reservoir with the permeability of greater than 500*10<-3>mu m<2> and the oil reservoir temperature of greater than 60 DEG C.

Description

technical field [0001] The invention belongs to the technical field of self-generated heat and efficiency-enhancing development in acidic heavy oil reservoirs, and in particular relates to a self-generated heat chemical temperature-raising agent for acidic heavy oil reservoirs and a use method thereof. Background technique [0002] The development of abundant heavy oil resources is of great significance. A prominent feature of heavy oil reservoirs is that under formation conditions, heavy oil has high viscosity, high relative density, and poor flow capacity, so it is difficult to develop economically and effectively with conventional technologies. However, the viscosity of heavy oil is very sensitive to temperature, that is, the temperature rises and decreases greatly, and the higher the viscosity, the greater the decrease. At this time, the flow of heavy oil tends to be Newtonian fluid, which is an important thermophysical property of heavy oil. , which is also the basic ba...

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): C09K8/592
CPCC09K8/592
Inventor 刘静蒲春生尉雪梅吴飞鹏
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com