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克拉2气田是世界上比较罕见的大型、超高压、巨厚砂岩气田。它是保证西气东输的气区，克拉203井又是目前克拉2气田中最具代表性的重点井。因此，从这口井试井资料的分析，可以了解到许多指导克拉2气田开发的重要信息。本文介绍利用分点录取的压力,研究了井筒中气水分离的相变过程。在仔细分析克拉203井试井资料的基础上，结合物探、测井、地质及工艺过程资料，对影响克拉2气田今后开发的诸多焦点问题一一给出了答案；排除井筒干扰后的无阻流量，地层的有效渗透率，钻井完井对地层的损害及措施改造的必要性，储层的延伸情况及对今后气田开采的影响。经过上述分析后认为，克拉2气田具有担负西气东输上游重点产气区的能力。

WELL TESTING EVALUATION STUDY OF A SPECIAL HIGH PRODUCTION GAS WELL

Kela 2 gas field is a large sized,superhigh pressure,giant thick sandstone gas field relatively seldom seen in the world,being a key gas region for the west to east natural gas transmission and well Kela 203 is the priority well,being of broadest representativeness in Kela 2 gas field at present. So,more important information guiding Kela 2 gas field development may be obtained from analyzing the well testing data of the well. The phase change process of gas water separation in wellbore is investigated in the paper by use of the point by point logged pressure data. On the basis of carefully analyzing the well testing data of well Kela 203,many key problems,which will influence Kela 2 gas field development in the future,are solved one by one in combination with the data on geophysical exploration,well logging,geology and technological process. These problems include open flow capacity eliminating wellbore interference,effective formation permeability,formation damage by drilling completion and its necessary stimulation as well as reservoir extension and its effect on gas field production in the future,etc. Through above mentioned analyses,it is considered that Kela 2 gas field is of the ability to hold the upstream key gas production area for the west to east natural gas transmission.