中国石油大学学报（自然科学版）2011，Vol.35Issue(1)：77-81,88,6.DOI:10.3969/j.issn.1673-5005.2011.01.015
"三高"气田固井水泥体系研究
Cement systems for well cementation in gas fields with high pressure, high gas production rate and high sulfur concent
摘要
Abstract
In view of the cementing difficulties in high production gas wells with high pressure and high sulfur content (three high), related requirements for cement slurry were discussed. On the basis of the analysis of the cement corrosion mechanism, the antiseptic strategy for cement system in "three high" gas fields was proposed. An appropriate particle size distribution philosophy was used for different blending component of cement slurry to optimize the design of cement slurry formulation. Orthogonal experiments were conducted, and four kinds of formulation for two cement systems, the light-weight highstrength cement system and the fiber-latex-microdilatancy cement system, were screened out with densely packed cement sheath and favorable corrosion prevention capability. In addition, evaluation tests on the corrosion resistance of set cement against H2S and CO2 were carried out, including the strength, permeability, loss in weight, corrosion depth and internal structure alteration before and after corrosion. The life span of set cement under corrosion was predicted in the light of the experimental data. The application results of Longgan gas field show that the qualification for cementing can be obviously improved by using the technology. Research results can be used to provide guidance for cementing in "three high" gas fields, and to prolong the life span of gas well.关键词
"三高"气田/固井/水泥浆/水泥石/腐蚀分类
能源科技引用本文复制引用
黄洪春,郑新权,刘爱萍.."三高"气田固井水泥体系研究[J].中国石油大学学报（自然科学版）,2011,35(1):77-81,88,6.基金项目
国家科技支撑计划"十一五"重点项目(2008BAB37B01) （2008BAB37B01）
