Multifunctional oil testing packer

• Main Authors: YI HUI'AN, TAO ZHENG, TIAN BINGZHOU, CHEN GUANGLI, DING BAISONG, LI BOREN
• Format: Patent
• Language: Chinese; English
• Published: 27.09.2019
• 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 provides a multifunctional oil testing packer. The multifunctional oil testing packer is characterized in that the multifunctional oil testing packer includes a high-pressure packer assembly, a stroke switch assembly and a differential pressure sliding sleeve assembly, wherein the high-pressure packer assembly, the stroke switch assembly and the differential pressure sliding sleeve assembly are connected as a whole from top to bottom, when the stoke switch assembly is in the closing state, the stoke switch assembly separates the differential pressure sleeve assembly from the high pressure packer assembly, and when the stoke switch assembly is in the opening state, the differential pressure sleeve assembly communicates with the high pressure packer assembly through the stoke switch assembly; and when the differential pressure sliding sleeve assembly is in the closing state, the differential pressure sliding sleeve assembly is blocked from the outside, and when the differential pressure sliding sl