Pumping unit with pole

• Main Authors: HUANG XINWU, REN LIANCHENG, ZHOU QIUSHA, WEI CHANGXIANG
• Format: Patent
• Language: Chinese; English
• Published: 21.05.2008
• Subjects: BLASTING; EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; ENGINEERING ELEMENTS AND UNITS; FIXED CONSTRUCTIONS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS; THERMAL INSULATION IN GENERAL; WEAPONS