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

Early strength foam cement slurry for well cementation

A cement slurry and foam technology, applied in application, household appliances, other household appliances, etc., can solve the problem of slow development of foam cement strength, and achieve the effect of ensuring uniformity and stability, rapid development of low temperature strength, and short transition time.

Active Publication Date: 2015-09-30
TIANJIN BO XING ENG SCI & TECH LIMITED COMPANY OF CNPC +2
View PDF3 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The solution of the present invention is to provide an early-strength foam cement slurry that meets the cementing requirements of low-temperature leaky formations in view of the problem that the strength of foam cement prepared by oil well cement develops slowly at low 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
  • Early strength foam cement slurry for well cementation
  • Early strength foam cement slurry for well cementation
  • Early strength foam cement slurry for well cementation

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0027] The early-strength foam cement slurry formula for well cementing provided by the embodiments of the present invention is as follows:

[0028] Formula 1: 100 parts of sulfoaluminate cement, 6 parts of foaming agent A, 6 parts of foaming agent B, 7 parts of foam stabilizer, 3 parts of fluid loss reducer, 1 part of retarder, and 31 parts of water.

[0029] Formula 2: 100 parts of sulfoaluminate cement, 6 parts of foaming agent A, 6 parts of foaming agent B, 7 parts of foam stabilizer, 4 parts of fluid loss reducer, 2.5 parts of retarder, and 30 parts of water.

[0030] Formula 3: 100 parts of sulfoaluminate cement, 5 parts of foaming agent A, 5 parts of foaming agent B, 5.4 parts of foam stabilizer, 4 parts of fluid loss reducer, 1.2 parts of retarder, and 33 parts of water.

[0031] Formula 4: 100 parts of sulfoaluminate cement, 5 parts of foaming agent A, 5 parts of foaming agent B, 5.4 parts of foam stabilizer, 5 parts of fluid loss reducer, 3.0 parts of retarder, and 3...

example 2

[0044] Compared with the formula in patent CN103525387 and the article "Ultra-low density foam cement slurry suitable for cementing in Changqing Oilfield"

[0045] Adopt cement slurry formula and admixture in CN103525387:

[0046] Cement slurry formula 11: 100 parts of oil well cement, 1.0 parts of foaming agent I, 1.0 parts of foaming agent II, 1.3 parts of foam stabilizer, 1.45 parts of fluid loss reducer, 0.2 parts of dispersant, 0.6 parts of retarder, 52 parts of water share.

[0047] Cement slurry formula 12: 100 parts of sulfoaluminate cement, 1.0 parts of foaming agent I, 1.0 parts of foaming agent II, 1.3 parts of foam stabilizer, 1.45 parts of fluid loss reducer, 0.2 parts of dispersant, and 0.6 parts of retarder , 52 parts of water.

[0048] The following cement slurry was prepared using the admixtures described in the article "Ultra-low density foam cement slurry for Changqing Oilfield cementing":

[0049] Cement slurry formula 13: 100 parts of oil well cement, 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

No PUM Login to View More

Abstract

The invention discloses early strength foam cement slurry for well cementation. The early strength foam cement slurry comprises the following components in parts by mass: 100 parts of sulphoaluminate cement, 4-12 parts of a foaming agent, 2-7 parts of a foam stabilizer, 1-3 parts of a retarder, 3-5 parts of a fluid loss agent and 30-40 parts of water. The early strength foam cement slurry provided by the invention has the advantages that the density can be adjusted within 0.55-1.40 g / cm<3>; the low-temperature strength is rapidly developed; the early strength foam cement slurry is applicable to the cementation of an oil-gas well of which the bottom-hole temperature is 4-25 DEG C.

Description

technical field [0001] The invention relates to the field of petroleum drilling engineering, in particular to an early-strength foamed cement slurry for well cementing in low-temperature leaky formations. Background technique [0002] Foamed cement slurry is used to directly inflate the cement slurry to reduce the density of the cement slurry, that is, to use gas as a lightening agent to achieve the purpose of reducing the density. In 1978, S.Yamada and others in the United States tested and successfully produced foam cement for oil wells for the first time. In the 1980s, the cementing technology of foam cement has made great progress. The researchers improved the foam generator, and strictly selected the surfactant as the foam stabilizer, so that the gas can be stably dispersed in the whole system in the form of uniform bubbles separated from each other, and a foam cement slurry with excellent performance can be produced. [0003] Oilfields in the former Soviet Union, the...

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): C09K8/487C09K8/473C04B38/02C04B28/06
CPCC04B28/065C04B38/02C04B2103/48C09K8/473C09K8/487
Inventor 席方柱孙富全曾建国刘爱萍高永会熊钰丹
Owner TIANJIN BO XING ENG SCI & TECH LIMITED COMPANY OF CNPC
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