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

Suspension stabilizer for high temperature cement slurry and high temperature resistant cement slurry prepared therefrom

A suspension stabilizer and cement slurry technology, applied in drilling compositions, chemical instruments and methods, etc., can solve the problems of affecting cement slurry ash time, cement slurry thickening, poor fluidity, etc., and improve high temperature suspension stability. properties, improve the strength of high temperature cement stone, improve the effect of mechanical structure

Active Publication Date: 2021-07-13
CNPC DRILLING RES INST +2
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the use of the above-mentioned suspension stabilizers can ensure the settlement stability of cement slurry below 160°C and the settlement stability of brine slurry below 120°C, but there are still some problems: 1) The thickening effect at room temperature is obvious, and it is easy to affect the cement slurry 2) Due to the obvious thickening effect at room temperature, if the ash samples on site are mixed unevenly, local thickening and poor fluidity of the cement slurry are likely to occur 3) The suspension mechanism mainly relies on the thickening effect of polymer materials and inorganic materials. Generally, as the temperature rises, the thickening suspension effect gradually decreases, so the thickening curve of cement slurry often appears " Due to the phenomenon of high-temperature dilution of “inverted steamed bread peak”, the cement slurry will settle to different degrees under high temperature; 4) The high-temperature-resistant thickening polymer powder material in the suspending agent is currently mainly imported from abroad, and the price remains high, resulting in cement The market price of the slurry suspension stabilizer is high; 5) When the temperature exceeds 160°C, the settlement stability of the high-temperature non-salt water cement slurry cannot be solved well, and the upper and lower density difference of the cement slurry exceeds 0.03g / cm 3 ; When the temperature exceeds 120°C, the settlement stability of the high-temperature brine cement slurry cannot be solved well, and the upper and lower density difference exceeds 0.03g / cm 3

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
  • Suspension stabilizer for high temperature cement slurry and high temperature resistant cement slurry prepared therefrom

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] It consists of the following components in proportion by weight: 100 parts of Portland cement, 3 parts of suspension stabilizer for high-temperature cement slurry, 100 parts of iron ore powder, 50 parts of micromanganese ore powder, 35 parts of quartz sand, 79 parts of semi-saturated Salt water, 1 part of sulfonated melamine formaldehyde resin, 2 parts of AMPS polymer fluid loss reducer, 4 parts of AMPS polymer retarder, 0.3 part of tributyl phosphate. First dry mix the high-temperature cement slurry with suspension stabilizer, iron ore powder, micromanganese ore powder, quartz sand, aldehyde and ketone condensate dispersant, AMPS polymer fluid loss reducer and Portland cement; then mix AMPS polymer Retardant, tributyl phosphate and semi-saturated brine are wet mixed evenly; finally, under stirring conditions, add the dry mixture to the wet mixture, and stir evenly to obtain a high-temperature high-density cement slurry with a density of 2.50g / cm 3 .

[0036] Remarks: ...

Embodiment 2

[0038]It is composed of the following components in proportion by weight: 100 parts of Portland cement, 4 parts of suspension stabilizer for high temperature cement slurry, 25 parts of iron ore powder, 35 parts of quartz sand, 70 parts of fresh water, 0.8 part of sulfonated melamine formaldehyde Resin, 2 parts of AMPS polymer fluid loss reducer, 4 parts of AMPS polymer retarder, 0.3 part of tributyl phosphate. First dry mix the high-temperature cement slurry with suspension stabilizer, iron ore powder, micromanganese ore powder, quartz sand, aldehyde and ketone condensate dispersant, AMPS polymer fluid loss reducer and Portland cement; then mix AMPS polymer Retardant, tributyl phosphate and fresh water are mixed evenly; finally, under stirring conditions, add the dry mixture to the wet mixture, and stir evenly to obtain a high-temperature cement slurry with a density of 2.00g / cm 3 .

[0039] Remarks: The ratio of the suspension stabilizer for high-temperature cement slurry de...

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
densityaaaaaaaaaa
densityaaaaaaaaaa
compressive strengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a suspension stabilizer for high-temperature cement slurry and the high-temperature-resistant cement slurry prepared therefrom. The suspension stabilizer is composed of the following components in parts by weight: 0.5-4 parts of fiber materials, 1-5 parts of surface active Agent powder material, 0.5-2 parts of flocculant powder material; fiber material is whisker, sepiolite, ceramic fiber, basalt fiber, brucite fiber or a mixture of two materials; the surface Active agent powder materials are sodium lauryl sulfate, sodium dodecyl sulfonate, sodium hexadecyl sulfonate, sodium octadecylbenzene sulfonate, sodium petroleum sulfonate, white dextrin, yellow paste One of fine; the flocculant powder material is one of polyferric sulfate, polyaluminum chloride, and polyaluminium-ferric silicate. The high temperature resistant cement slurry prepared by using the suspension stabilizer has low initial consistency and good settlement stability. The invention improves the high-temperature suspension stability of cement slurry and the strength of cement stone, and provides technical support for the exploration and development of deep oil and gas resources.

Description

technical field [0001] The invention relates to a suspension stabilizer for high-temperature cement slurry and the high-temperature-resistant cement slurry prepared therefrom, belonging to the field of oil and gas exploration and development. Background technique [0002] With the deepening of exploration and development of oil and gas reservoirs, the number of deep and ultra-deep wells is increasing, and the bottom hole temperature is getting higher and higher. Some layers contain large sections of gypsum-salt layer and brine layer, which poses a great challenge to the design of cement slurry settlement stability. . The higher the bottom hole temperature, the more difficult it is to ensure the settlement stability of the cement slurry; and the settlement stability of the brine cement slurry is more difficult to guarantee than the non-brine cement slurry. The settlement stability of the cement slurry is not good, and the phenomenon of settlement and delamination is prone to...

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 Patents(China)
IPC IPC(8): C04B28/04C04B24/20C09K8/467
CPCC04B28/04C04B40/0039C04B2201/50C09K8/467C04B14/308C04B14/02C04B14/06C04B22/124C04B24/166C04B24/003C04B24/163C04B2103/22C04B14/4643C04B24/20C04B22/08C04B24/38
Inventor 张华靳建洲徐明齐奉忠于永金李明刘硕琼袁进平程小伟郭建华郑友志丁志伟郭玉超张弛刘子帅周崇峰
Owner CNPC DRILLING RES INST
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