The victory welltube factory mainly provides each type the welltube, the type are many, year to year manages.
胜利井管厂主要提供各种类型的井管，种类多，常年经营。
2
Scale deposit takes place in welltube, pipeline and heating equipment of collection and transmission system in the Luliang oilfield, and damages to production system.
从井筒到地面集输系统的管线及加热设备结垢给陆梁油田的生产带来了极大危害。
3
However with the reservoir pressure decreasing and water production gradually increasing, field test show it could be used to enhance entrainment capability of welltube.