为保证川东北地区罗家寨、铁山坡构造高含硫气井长期采气高抗硫要求，2003年起，从国外进口了部份套管头和采气井口。
In order to ensure the requirement of high anti-sulfur in Luojiazhai and Tieshan sour gas well, some casing heads and gas-producing wellheads have been imported since 2003.
高效的输导体系、优质的储集空间以及良好的封堵条件，确保了罗家寨气田较高的聚集效率。
The high accumulation efficiency of Luojiazhai gas field has been ensured by the highly efficient carrier system, good reservoir space and favorable sealing conditions.
通过对罗家寨几口气井的相态研究，得出了这几口井不同的相态特征，并对一些实验现象和实验结果进行了分析。
With the phase behavior study of several gas Wells in Luojiazhai, the various phase behavior features of the Wells are achieved and some experimental phenomena and results are analyzed.
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