Unlock instant, AI-driven research and patent intelligence for your innovation.

Non-ionic clean fracturing fluid taking lecithin as main agent

A clean fracturing fluid, non-ionic technology, applied in the direction of drilling composition, chemical instruments and methods, etc., can solve the problems of large formation permeability damage, incomplete gel breaking, unfavorable oil and gas layer protection, etc., to achieve Low permeability damage, low residue content, good rheological effect

Inactive Publication Date: 2015-07-01
XI'AN PETROLEUM UNIVERSITY
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conventional fracturing fluid systems use guar gum as the thickener. During use, due to incomplete gel breaking and high residue content of the gel breaking fluid, the permeability of the formation is greatly damaged, usually reaching more than 20%. Conducive to the protection of oil and gas formations, more and more limited in use

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

[0017] A non-ionic clean fracturing fluid with lecithin as the main agent, by mass percentage, includes the following components:

[0018] Main agent lecithin 5%;

[0019] Acetic acid 0.4%;

[0020] Ethanol 0.2%;

[0021] 2-Ethylhexanol 0.4%;

[0022] Clear water 94%.

[0023] The performance test of the non-ionic clean fracturing fluid system shows that when the addition amount of lecithin is 5%, the fracturing fluid has better rheological and temperature resistance properties, less filtration loss, and damage to formation permeability. dropped below 10%.

Embodiment 2

[0025] A non-ionic clean fracturing fluid with lecithin as the main agent, by mass percentage, includes the following components:

[0026] Main agent lecithin 7.5%;

[0027] Acetic acid 0.5%;

[0028] Ethanol 0.3%;

[0029] 2-Ethylhexanol 0.3%;

[0030] Clear water 91.4%.

[0031] The performance test of the non-ionic clean fracturing fluid system shows that when the addition amount of lecithin is 7.5%, the fracturing fluid has better rheological and temperature resistance properties, less filtration loss, and damage to formation permeability. dropped below 10%.

Embodiment 3

[0033] A non-ionic clean fracturing fluid with lecithin as the main agent, by mass percentage, includes the following components:

[0034] Main agent lecithin 10%;

[0035] Ethanol 0.6%;

[0036] Acetic acid 0.2%;

[0037] 2-Ethylhexanol 0.2%;

[0038] Clear water 89%.

[0039] The performance test of the non-ionic clean fracturing fluid system shows that when the addition amount of lecithin is 10%, the fracturing fluid has better rheological and temperature resistance properties, less filtration loss, and damage to formation permeability. dropped below 10%.

[0040] The purpose of the present invention is to use lecithin as the main agent and acetic acid, ethanol and 2-ethylhexanol as other additives to study the formulation of the clean fracturing fluid, and to investigate the performance of the fracturing fluid. The obtained fracturing fluid has better rheology and temperature resistance, less filtration loss and less damage to formation permeability. The significance...

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

A non-ionic clean fracturing fluid taking lecithin as a main agent comprises the following components in percentage by mass: lecithin serving as a main agent, ethyl alcohol and 2-ethyl hexanol. A fracturing fluid system has a good rheological property and high temperature tolerance, contains a small amount of gel breaking liquid residues, and causes little damage to stratum permeability, and the damage rate is below 10%.

Description

technical field [0001] The invention belongs to the technical field of oilfield chemistry, in particular to a non-ionic clean fracturing fluid with lecithin as the main agent. Background technique [0002] Fracturing fluid is the fluid used when fracturing fluid layers with liquid conductivity in order to obtain high production during oil production. Lecithin non-ionic active agent is a kind of active agent that does not ionize in water and the whole molecule plays a surface active role. Because they are generally resistant to salt, calcium, acid and alkali, they are not easy to be free from the commonly used gravitational forces. Therefore, more and more non-ionic active agents are used in fracturing fluids. The conventional fracturing fluid system uses guar gum as the thickening agent. In the process of use, due to incomplete gel breaking and high residue content of the gel breaking fluid, the permeability of the formation is damaged greatly, usually reaching more than 20...

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): C09K8/68
Inventor 陈世军王建民韩涛薛丹李楷
Owner XI'AN PETROLEUM UNIVERSITY