Segmented plugging control measure pipe column for screen pipe completion well and segmented plugging control measure method for screen pipe completion well

• Main Authors: WANG LEI, WANG YING, ZHANG QILUN, YANG DONGSHENG, FANG LIANGFENG, CHEN YAN, LI XIN, ZHANG JINRUI, YUE YONGJUN, LI HONGSHUANG, GUAN ZHIZHONG, WU XIAOMING, XU QINGZHU, WU XIANGYUAN, CAI LONGHAO
• Format: Patent
• Language: Chinese; English
• Published: 07.12.2021
• 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 a segmented plugging control measure pipe column for a screen pipe completion well and a segmented plugging control measure method for the screen pipe completion well. The segmented plugging control measure pipe column for the screen pipe completion well comprises a releasing packer (12) and a metal pipe (16) which are sequentially arranged in the axial direction; a first expansion type packer (2), a second expansion type packer (3), a third expansion type packer (4) and a fourth expansion type packer (5) are sequentially sheathed outside the metal pipe (16); and a first chemical packer injection check valve (6), a second chemical packer injection check valve (7), a first chemical plugging agent injection check valve (8) and a first production check valve (10) are arranged on the metal pipe (16). According to the segmented plugging control measure pipe column for the screen pipe completion well and the segmented plugging control measure method for the screen pipe completion well, segme