改进等时试井技术在宝浪油田的应用

Application of modified isochronal testing technique in condensate gas reservoir
with low permeability in Baolang Oilfield

梁庚白 洪新安 李粤 罗小军

河南油田分公司石油工程技术研究院，河南 南阳 473132

Research Institute of PetroleumEngineering and Technology, Henan Oilfield Company, SINOPEC, Nanyang 473132,China

宝中区块凝析气藏属于高含凝析油凝析气藏类型，露点压力高达27.14 MPa，接近地层压力28.16 MPa，气井一投产，井底流压将低于露点压力，井底不可避免地会发生反凝析现象。为了了解气井的产能情况，求取地层参数，首次在凝析油气藏采用改进等时试井方法进行测试。通过改进等时试井技术在低孔低渗凝析气藏的应用研究，对试井工艺管柱选型、试井过程中结冰问题的预防和处理、试井管理工作中存在的问题提出了意见和建议，为以后开展改进等时试井积累了经验。

The condensate gas reservoir in Baozhong Block belongs to the condensate gas reservoir with high condensate oil content. Its
dew point pressure is 27.14MPa, which is close to 28.16MPa of formation pressure. As the gas well is put into production, the flowing
bottom hole pressure shall be lower than the dew point pressure and the retrograde condensate phenomenon will unavoidably occur
at the bottom of the well. In order to get understanding of the deliverability of gas well and acquire the formation parameters, the
modified isochronal testing technique is first used to the condensate gas reservoir. By studying the application of this technique in
such kind of gas reservoir, this paper proposes the opinions and advices for string lectotype, the precaution and treatment of icing
problem during well testing and the questions existed in well testing management, which can gather experiences for developing
modified isochronal testing.