The Current Situation and Development Trend of the Wellhead Device

The wellhead device is the important apparatus in the oil /gas production,its performance's quality involves whether the oil/gas well could be produced safely and high-efficiently.On the base of introduction the overall current development situation of the foreign wellhead devices and the improvement situations of its every part structure,the article has pointed out the deficiencies of the present wellhead device of our country.Meanwhile,it also has put forward the suggestions on the development of the wellhead device of our country in the future.