| 用不稳定流动的压力和流量解释致密低渗气藏的地层参数 |
| |
| 引用本文： | 任玉林,王昔彬,夏海容. 用不稳定流动的压力和流量解释致密低渗气藏的地层参数[J]. 大庆石油地质与开发, 2004, 23(6): 36-38 |
| |
| 作者姓名： | 任玉林 王昔彬 夏海容 |
| |
| 作者单位： | 中石化石油勘探开发研究院,北京,100083;中石化石油勘探开发研究院,北京,100083;中石化石油勘探开发研究院,北京,100083 |
| |
| 摘 要： | 针对致密低渗气藏关井压力恢复很难达到径向流的特点，利用致密低渗气藏开井过程中气体的不稳定流动方程，推导出不稳定流动系数at与时间t的线性函数关系，结合修正等时测试不稳定流动段的井底流压数据，用最小二乘法分别计算出at和b，再利用直线段的斜率计算地层系数Kh和惯性系数D，利用同一直线段的截距计算气井开井的表皮系数S。通过大牛地气田几口井的实际测试数据进行解释表明,该方法可以用于现场解释。
|
| 关 键 词： | 低渗气藏 试井解释 渗透率 不关井测试 |
| 文章编号： | 1000-3754(2004)06-0036-03 |
| 修稿时间： | 2004-03-18 |
Applying non-stabilized flowing pressure and rate to interpret low permeability tight gas reservoir parameters |
| |
| Ren Yu-lin,et al.. Applying non-stabilized flowing pressure and rate to interpret low permeability tight gas reservoir parameters[J]. Petroleum Geology & Oilfield Development in Daqing, 2004, 23(6): 36-38 |
| |
| Authors: | Ren Yu-lin et al. |
| |
| Abstract: | The buildup pressure is hardly to approach the radial flow state in low permeability tight gas reservoirs. By applying non-stabilized flowing equation from opening gas well of tight gas reservoir, relationship between non-stabilized factor at and time factor t is-developed, which are calculated by transient down-hole flowing pressure during modified Isochronal test with least-squares method. The parameters Kh and D are calculated by the slope of straight line regressed, and skin factor S is calculated by intercept of the same straight line. Calculation results of some wells in Daniudi gas field show that this method can be used to interpret tight gas reservoir parameter. |
| |
| Keywords: | tight gas reservoir well test permeability un-shut test |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
