摘要
根据我国新油气田勘探开发现场的实际情况,应当充分利用试油资料来确定气藏产能,但是,由于试油资料是在测试时间较短情况下取得的,工作制度也比较单一,而且一点法计算无阻流量的公式还有一定局限性,故求得的产能结果需要利用产能试井资料来校正。确立了无阻流量QAOF与地层系数Kh的相关关系,即QAOF=f(Kh)或QAOF=f(Kh/ΣKh),并据此关系建立了全气藏普遍的产能方程。认为通过最大可能的合理生产压差和全气藏普遍的产能方程,就可确定最大可能的平均单井合理产量,并根据不同油管直径下的冲蚀流速,最后确定设计产量。
A new method of determining deliverability of gas reservoir is established in this work. The principle and the derived process are presented as follows: the Absolute Open Flow (AOF) potential of one-point method is first determined using the test data; then, the correction function of AOF is given based on the well deliverability testing data; The established relationship of AOF with flow coefficient leads to a generalized deliverability equation for the whole gas reservoir; the possible maximum and reasonable production pressure draw-down is employed in calculation of the maximum and possible individual well average deliverability. Finally the well deliverability is determined for the specified tubing string in development plan in line with the requirements of erosion velocity. The case example is calculated for a gas field of West China.
出处
《天然气地球科学》
EI
CAS
CSCD
2004年第3期276-279,共4页
Natural Gas Geoscience
基金
国家重点基础发展规划项目(编号:2001CB209100)资助.
关键词
干气
产能
无阻流量
试井
地层系数
Dry gas
Deliverability
Absolute open flow potential
Well test
Flow coefficient.
