A contrary device that ends for small casing well cementation, shutoff

• Main Authors: PAN TAO, DU LIANGHUI, WANG RENQIAN, WANG XIUSHUAI, HAO JIANGUANG, HU LIANGLIANG
• Format: Patent
• Language: Chinese; English
• Published: 23.11.2016
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS

The utility model discloses a contrary device that ends for small casing well cementation, shutoff, including center tube, sealed bowl, the sealed gum cover of gluing, sealed bowl, the sealed gum cover of gluing of center tube outside suit, sealed gum cover is located the sealed bowl top of gluing,...