[1]周仕明,李根生,初永涛.防气窜固井分段设计方法[J].石油钻探技术,2013,41(05):52-55.[doi:10.3969/j.issn.1001-0890.2013.05.010]
 Zhou Shiming,Li Gensheng,Chu Yongtao.Sectional Design for Anti-Gas Channeling Cementing[J].Petroleum Drilling Techniques,2013,41(05):52-55.[doi:10.3969/j.issn.1001-0890.2013.05.010]
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《石油钻探技术》[ISSN:1001-0890/CN:11-1763/TE]

卷:
41卷
期数:
2013年05期
页码:
52-55
栏目:
钻井完井
出版日期:
2013-09-25

文章信息/Info

Title:
Sectional Design for Anti-Gas Channeling Cementing
作者:
周仕明12 李根生1 初永涛2
1. 中国石油大学(北京)石油工程学院, 北京 102249;
2. 中国石化石油工程技术研究院, 北京 100101
Author(s):
Zhou Shiming12 Li Gensheng1 Chu Yongtao2
1. School of Petroleum Engineering, China University of Petroleum(Beijing), Beijing, 102249, China;
2. Sinopec Research Institute of Petroleum Engineer, Beijing, 100101, China
关键词:
固井水泥浆胶凝强度气窜分段
Keywords:
well cementingcement slurrygel strengthgas channelingsection
分类号:
TE256+.1
DOI:
10.3969/j.issn.1001-0890.2013.05.010
摘要:
为指导防气窜固井压稳设计,避免过压稳或欠压稳,研究了防气窜固井分段设计方法。基于环空水泥浆液柱中不同深度的水泥浆因温度不同导致静胶凝强度增长速度不同,以及不同深度的压力损失也不同的实际情况,对环空水泥浆的液柱压力损失进行分段计算。设定水泥浆液柱静胶凝强度的增长自上而下是线性增长,通过调整水泥浆性能控制分段水泥浆静胶凝强度的发展,使尾浆静胶凝强度达到240 Pa时,领浆平均静胶凝强度小于48 Pa,建立了水泥浆液柱压力损失精确计算模型,提出了分段设计方法和压稳判定方法。在川东北地区100多口气井固井施工设计中应用该方法,固井防气窜成功率达到100%。该方法为防气窜固井环空设计提供了理论计算模型。
Abstract:
To guide anti-gas channeling cementing design,and avoid circulation loss or underbalanced gas channeling,sectional design method for anti-gas channeling cementing was developed.Since the slurry temperature in annulus varies with depth,the build-up of gel strength and pressure drop are different at different depths,the hydraulic pressure loss of slurry column is calculated in sections.By adjusting slurry performance and setting the growth of gel strength to be linear from top to bottom of slurry column,and making gel strength of tail slurry up to 240 Pa,the average gel strength of lead slurry is less than 48 Pa.An accurate calculation model of hydraulic pressure loss of slurry was established,and sectional design and balanced cementing methods were developed.The methods have been used to cementing design in more than 200 gas wells in northeastern Sichuan province,the success rate of anti-gas channeling has been 100%.The method provides an effective calculation model for anti-gas channeling cementing design.

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备注/Memo

备注/Memo:
收稿日期:2013-2-17;改回日期:2013-8-19。
基金项目:国家科技重大专项"大型油气田及煤层气开发"之专题"海相油气井固井技术"(编号:2011ZX05005-006-004)部分研究内容。
作者简介:周仕明(1972—),男,安徽和县人,1993年毕业于石油大学(华东)钻井工程专业,2003年获石油大学(北京)油气井工程专业硕士学位,教授级高级工程师,主要从事固井工艺与材料研究。
联系方式:(010)84988220,zhousm.sripe@sinopec.com。
更新日期/Last Update: 1900-01-01