This type of productiontree has been applied in tarim oilfield for more than ten wells and achieved a better result.
此种采油树在塔里木探区推广应用十多井次，使用效果良好。
2
And the big tubing cross and the double barrel structures are compose the productiontree the major component, is also the entire installment main bearing pressure part.
其中大四通和双管结构是组成采油树的主要部件，也是整个装置的主要承压部件。
3
The utility model provides an integral petroleum productiontree, which is characterized in that a pipe cross and mutually connected main bars are a hollow and cuboid integral forging piece;