Insertion-pipe-type waterproof production packer and working method thereof

• Main Authors: WANG ZHIGUO, LIU JIANGBO, ZHANG XIONGTAO, JIANG ZHIQIANG, JU YAFENG, BAI XIAOPEI, WANG SHANGWEI, ZHAO PENGYU, LUO YOUGANG, LIANG WANYIN
• Format: Patent
• Language: Chinese; English
• Published: 29.03.2019
• 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 invention discloses an insertion-pipe-type waterproof production packer and a working method thereof. The upper end of an insertion pipe is connected with an insertion pipe joint, a gap is formedbetween a center pipe and the insertion pipe, the center pipe and the insertion pipe are provided with overcurrent holes, insertion pipe sealing mechanisms are arranged at the upper and of the insertion pipe and the lower end of the center pipe, an unblocking device is arranged in the upper setting sealing mechanism, the upper setting sealing mechanism and a lower setting sealing mechanism are connected through an anchoring mechanism, and the upper setting sealing mechanism, the unblocking mechanism, an upper rubber cylinder, the anchoring mechanism, a lower rubber cylinder, the lower settingsealing mechanism and a releasing mechanism sleeve the center pipe in sequence from top to bottom. According to the insertion-pipe-type waterproof production packer, after isolated production is completed, an upper pipe column