苏里格气田气井废弃条件研究

Petrochemical Industry Application(2016)

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Abstract
苏里格气田是典型的低渗透气田,要准确计算其采收率和可采储量,必需确定气井的废弃条件.考虑产能方程系数在开采过程中的变化,推导出计算气井任意时刻的二项式系数计算公式,由此可得到气井废弃时的稳定二项式方程.以经济评价结合地面工程论证,确定气井废弃产量和废弃井口流压,进而根据垂直管流法计算气井废弃井底流压,最终求得较可靠的废弃地层压力.
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