地址:四川省成都市高新区天府大道北段12号中国石油科技大厦

电话:028-86015441;028-86015319

邮箱:gaskk@petrochina.com.cn

QQ群:489323588

您所在位置:首页->预发布刊期->第37卷第3期


复合影响的低渗气藏气井产能精细化计算方程
Improved Gas Well Deliverability Formation for Combined Affect Low-permeability Gas Reservoir
王永胜,陈杜娟,肖青波,纪成,王怀龙
点击:2321次 下载:2次
DOI:
作者单位:西南石油大学
中文关键字:低渗气藏 拟压力 应力敏感 滑脱效应 细化计算 产能方程
英文关键字:Low permeability gas reservoir, pseudo pressure, stress sensibility, slippage effect, precise calculation, deliverability formation.
中文摘要:针对低渗气藏的渗流特征,以气体渗流时启动压力、高速非达西效应为依据,建立了考虑应力敏感与滑脱效应复合影响的低渗气藏气井产能方程,并基于设定的不同形式拟压力和天然气烃类体系在地层温度下粘度与压缩因子的乘积与压力的关系曲线,对不同压力区间拟压降与启动压力项的计算公式进行了推导,给出了产能方程的细化计算方式,对低渗气藏气井产能规律进行了研究。结果表明:采用改进的不同压力区间拟压力不同简化形式的细化计算方式具有更高的计算和分析预测精度,通常迭代或近似计算方式所计算的结果使滑脱效应对气井产能的影响偏大;应力敏感使气井产能减少、滑脱效应使气井产能增加,当压力较高时,应力敏感和滑脱效应对气井产量影响较弱,随着压力降低其影响逐渐增强。
英文摘要:Based on high velocity non-darcy seepage flow and start-up pressure gradient, we established gas well deliverability formation for combined affect low-permeability gas reservoir, considering stress sensibility and slippage effect. What’s more, we deduced calculation formations for pseudo pressure difference and start-up pressure on different pressure ranges, on the basis of various pseudo pressure and the relationship curve of product of natural gas hydrocarbon system viscosity and compressibility under reservoir temperature with pressure, provided precise calculation method for deliverability formation and carried research on gas well deliverability of low permeability gas reservoir. The above-mentioned research shows: Improved precise calculation method for deliverability formation for different simplified pseudo pressure under different pressure ranges can achieve higher calculation and analysis prediction precision, compared with precise calculation, formal method will achieve a higher effect on deliverability of slippage effect; stress sensibility can reduce well production, slippage effect can increase well production; stress sensibility and slippage effect will have small effect on gas well deliverability under high pressure and a bigger effect when pressure falls in a certain small range.
读者评论

      读者ID: 密码:   
我要评论:
国内统一连续出版物号:CN51-1159/TE |国内发行代码: |国际标准出版物号:ISSN1673-3177 |国际发行代码:
主管单位:中国石油西南油气田公司  主办单位:中国石油西南油气田公司勘探开发研究院
版权所有©2020天然气勘探与开发》编辑部 蜀ICP备10004100号
本系统由北京菲斯特诺科技有限公司设计开发
您是本站第2733385名访问者