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

Method for controlling the rheology of an aqueous fluid and gelling agent therefor

a technology of aqueous fluid and gelling agent, which is applied in the direction of fatty acid chemical modification, sealing/packing, borehole/well accessories, etc., can solve the problems of high and low permeability of rocks, and achieve high heat stability

Inactive Publication Date: 2010-08-24
AKZO NOBEL NV
View PDF33 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0013]The gelling agents employed in the foregoing method advantageously provide clear gels which do not undergo phase separation over extended periods of time and exhibit high heat stability.

Problems solved by technology

However, rock often has areas of high and low permeability.

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
  • Method for controlling the rheology of an aqueous fluid and gelling agent therefor
  • Method for controlling the rheology of an aqueous fluid and gelling agent therefor
  • Method for controlling the rheology of an aqueous fluid and gelling agent therefor

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0040]61.7g of bis (2-hydroxyethyl)tallow alkylamine was mixed with 29.8 of phthalic acid and 823.5 g of water to make a 10% solution. This was heated to 70° C. to make a clear gel which exhibited rebound.

example 2

[0041]65.0 g of bis(2-hydroxyethyl)hydrogenated rapeseed alkylamine was mixed with 26.5 g of phthalic acid and 823.5 g of water to make a 10% solution. This was heated to 70° C. to make a clear gel which exhibited rebound.

example 3

[0042]61.5 g of bis(2-hydroxyethyl)octadecyl amine was mixed with 30.0 g phthalic acid and 823.5 g of water to make a 10% solution. This was heated to 70° C. to make a clear gel which exhibited rebound.

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
Temperatureaaaaaaaaaa
Fractionaaaaaaaaaa
Fractionaaaaaaaaaa
Login to View More

Abstract

A method for controlling the rheology of aqueous systems, particularly for those intended for underground use, includes injecting an aqueous fluid containing a surfactant gelling agent into the system. The surfactant gelling agents are, for example, fatty aliphatic amidoamine oxides, salts of an alkoxylated monoamine with an aromatic dicarboxylic acid, and salts of an alkyldiamine with an aromatic dicarboxylic acid. The surfactant gelling agents can be absorbed onto particulate supports to facilitate delivery of the gelling agent. The additives may be incorporated in the viscoelastic fluid to tailor its use in hydraulic fluids, drilling muds, fracture fluids, and in applications such as permeability modification, gravel packing, cementing, and the like.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to methods and agents for modifying aqueous fluids and, in particular, to modifying the rheological behavior of aqueous fluids used in well drilling and similar subterranean operations.[0003]2. Background of the Art[0004]Fluids are used in well drilling operations, for example, to cool and lubricate the drilling bit, to carry away drilled solids and other debris, to suspend drilled cuttings and other debris when the fluid column is static, to control subsurface pressure, to prevent squeezing or caving of formations, to suspend propping agents, and to minimize damage to any potential production zone. In hydraulic operations fluids are used to transfer pressure from one location to another.[0005]Drilling fluids and hydraulic fluids can be water based or oil based. Typically, water based drilling and hydraulic fluids can include one or more aqueous fluid thickening agents, lubricants, and corr...

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): B01J13/00B01F17/08C07C211/64E21B43/22E21B43/16C09K8/12C09K8/22C09K8/506C09K8/60C09K8/62C09K8/86C09K23/00C09K23/08
CPCC09K8/12C09K8/22C09K8/506C09K8/62C09K8/86Y10S507/922
Inventor FARMER, ROBERT F.DOYLE, ANDRESS K.VALE, GLENDA DEL CARMENGADBERRY, JAMES F.HOEY, MICHAEL D.DOBSON, RANDY E.
Owner AKZO NOBEL NV