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

Direct tracking method for pore scale motion of polymer gel particles

A technology of gel particles and polymers, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as the inability to reveal the mechanical mechanism of fluid and polymer gel particles

Active Publication Date: 2018-09-21
CHINA PETROLEUM & CHEM CORP +1
View PDF12 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these methods can reproduce the flow phenomenon or obtain the macroscopic seepage law, they cannot reveal the mechanical mechanism of the fluid and polymer gel particles seepage in the pores.

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
  • Direct tracking method for pore scale motion of polymer gel particles
  • Direct tracking method for pore scale motion of polymer gel particles
  • Direct tracking method for pore scale motion of polymer gel particles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] In order to make the above and other objects, features and advantages of the present invention more comprehensible, the preferred embodiments are listed below and shown in the accompanying drawings in detail as follows.

[0035] Such as Figure 7 as shown, Figure 7 It is a flow chart of the method for direct tracking of pore-scale migration of polymer gel particles of the present invention.

[0036] Step 101, solving the fluid field.

[0037]

[0038] Among them, u is the velocity, p is the pressure, and v is the viscosity coefficient of the fluid.

[0039] Solve the motion equation of the fluid in the whole field to obtain the velocity field and pressure field of the fluid, and the influence of particles on the fluid is not considered in the solution process.

[0040] Step 102, calculate the force of each sub-particle. In order to consider the effect of the particle on the deformation of the particle due to the effect of the wall surface and the interaction bet...

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

No PUM Login to View More

Abstract

The invention provides a direct tracking method for pore scale motion of polymer gel particles. The direct tracking method for the pore scale motion of the polymer gel particles comprises the steps of1, solving a fluid field; 2, calculating stresses of sub-particles; 3, calculating motion of the sub-particles; 4, correcting fluid volume of a particle coverage region; and 5, returning to the step1 for continuing to solve the next time step, until a preset time stop condition is met. The direct tracking method for the pore scale motion of the polymer gel particles successfully realizes the influence of contact forces between the particles, contact forces between the particles and a wall and action forces of the particles and a fluid on particle motion and deformation, and successfully realizes direct tracking of a dynamic process of motion of a polymer gel particle oil flooding system in pores.

Description

technical field [0001] The invention relates to the technical field of oilfield development, in particular to a method for directly tracking the pore scale migration of polymer gel particles. Background technique [0002] As an important strategic resource, oil plays a very important role in the development of the national economy. With the development of the economy, my country's demand for oil is also increasing. Field practice in Shengli Oilfield shows that branched pre-crosslinked gel particle (B-PPG) flooding is an effective replacement technology for further greatly improving oilfield recovery after polymer flooding, and can achieve a large increase in oil production in old oilfields. This technology injects B-PPG into the formation to achieve plugging of high-permeability zones or fractured areas, allowing fluid to flow into low-permeability areas that have not been swept after water flooding or polymer flooding, and activates the remaining oil in it to achieve water...

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
IPC IPC(8): G06F19/00
CPCG16C20/10
Inventor 曹绪龙戴涛杨耀忠于金彪曹伟东苏军伟周建伟史敬华张波李宗阳
Owner CHINA PETROLEUM & CHEM CORP
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