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

High temperature-resistant insulating fluid suspension stabilizer

A technology of suspension stabilizer and spacer, which is applied in the direction of drilling compositions, chemical instruments and methods, etc., can solve the problems of solid phase particle settlement and poor settlement stability, and achieve good rheology, high efficiency and chemical compatibility Good results

Active Publication Date: 2017-09-19
BC P INC CHINA NAT PETROLEUM CORP +1
View PDF10 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a high-temperature-resistant spacer fluid suspension stabilizer that overcomes the problems of poor settling stability of the currently used spacer fluid at high temperatures, and serious settling of solid particles at high temperatures.

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
  • High temperature-resistant insulating fluid suspension stabilizer
  • High temperature-resistant insulating fluid suspension stabilizer
  • High temperature-resistant insulating fluid suspension stabilizer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Weigh 30 parts by weight of OCMA-type sodium-based bentonite and 30 parts by weight of sepiolite and add them to the powder mixer, turn on the mixer, and slowly add 15 parts by weight of modified diutan gum, 11 parts by weight of butyl acrylate and propylene Nitrile copolymer, 9 parts by weight of sodium pyrophosphate, 4 parts by weight of water glass and 12 parts by weight of white carbon black, then close the mixing bin, continue to stir for 1h and collect the materials, which is the suspension of the high-temperature spacer liquid prepared in this embodiment Stabilizer, denoted as sample 1.

Embodiment 2

[0023] Weigh 35 parts by weight of OCMA type sodium bentonite and 25 parts by weight of sepiolite and add them to the powder mixer, turn on the agitator, and slowly add 20 parts by weight of modified diuterene, 12 parts by weight of butyl acrylate and acrylonitrile copolymer, 6 parts by weight of sodium pyrophosphate, 2 parts by weight of water glass, and 12 parts by weight of white carbon black, then close the mixing bin, continue to stir for 1 hour and collect the materials, that is, the high-temperature spacer liquid prepared in this embodiment is stable in suspension agent, recorded as sample 2.

Embodiment 3

[0025] Weigh 20 parts by weight of OCMA type sodium bentonite and 40 parts by weight of sepiolite and add them to the powder mixer, turn on the agitator, and slowly add 20 parts by weight of modified dipitan gum, 11 parts by weight of butyl acrylate and propylene Nitrile copolymer, 6 parts by weight of sodium pyrophosphate, 3 parts by weight of water glass and 12 parts by weight of white carbon black, then close the mixing bin, continue to stir for 1h and collect the materials, which is the suspension of the high-temperature spacer liquid prepared in this embodiment Stabilizer, denoted as sample 3.

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
shear viscosityaaaaaaaaaa
densityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a high temperature-resistant insulating fluid suspension stabilizer which is prepared from the following components in parts by weight: 55-60 parts of natural minerals, 15-20 parts of modified diutangum, 11-13 parts of high molecular polymer, 8-13 parts of inorganic salt and 10-15 parts of white carbon black. The high temperature-resistant insulating fluid suspension stabilizer has the advantages of good suspension stabilization at both high temperature and low temperature, and in addition, the modified diutangum has good fluid loss control effect; relative to the existing suspending agent which is conventionally used, the high temperature-resistant insulating fluid suspension stabilizer is greatly reduced in dosage and is high in efficiency, and the suspension stabilization performance of the system is excellent; and meanwhile, the high temperature-resistant insulating fluid suspension stabilizer has the characteristics of good rheology and saturated sodium chloride brine resistance, does not have poor change in fluid performance after being mixed with a drilling fluid and cement slurry and accords with the construction requirements.

Description

technical field [0001] The invention relates to the technical field of oil field cementing spacer fluid, in particular to a high temperature resistant spacer fluid suspension stabilizer and a preparation method thereof. Background technique [0002] With the continuous deepening of exploration and development, there are more and more deep wells, ultra-deep wells, extended-reach horizontal wells, and adjustment wells, and the density of drilling fluid is getting higher and higher. In order to improve the displacement efficiency and cementing quality, it is necessary to use high temperature resistant spacer fluid system. The high temperature suspension stability of the spacer fluid system and the compatibility with cement slurry and mud at high temperature are very important. The suspension stability of spacers currently used is mainly based on natural high molecular polymers. The xanthan gum and carboxymethyl cellulose used therein have good suspension performance at low tem...

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): C09K8/40
CPCC09K8/40
Inventor 齐奔刘文明付家文林志辉孙勤亮王芳于倩倩杜宾肖尧宗勇
Owner BC P INC CHINA NAT PETROLEUM CORP