Single valve normal pressure type foam draining ball releasing device

• Main Authors: LIU YI, WANG GANG, ZHANG XIUFENG, CAO CHENGSHOU, LI JIANYANG, LI DAXIN, CHANG PENG, CHANG SEN
• Format: Patent
• Language: English
• Published: 03.06.2015
• 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 belongs to the technical field of gas production of oil and gas fields and particularly relates to a single valve normal pressure type foam draining ball releasing device. The single valve normal pressure type foam draining ball releasing device comprises a chemical tank and a christmas tree connection pipeline connected with the eccentric position of the bottom of the chemical tank, a feeding ball valve is arranged in the christmas tree connection pipeline, a valve element ball of the feeding ball valve is provided with a blind hole, and the blind hole is opposite to a valve body channel of the feeding ball valve and has the same diameter as the valve body channel. According to the single valve normal pressure type foam draining ball releasing device, a ball valve element is specially transformed, it is guaranteed that the chemical tank is completely isolated from a wellhole in the chemical feeding process, automatic control over the whole feeding process is guaranteed, efficiency is improved by 50% compared with manual operation, and after foam draining balls are released, liquid in a gas well with accumulated liquid can be drained in time in the early days.