Horizontal well plug removal and yield increase integrated technology and system

• Main Authors: JIA MIN, LIU YAN, LI JUN, WANG HAOYU, LI NAN, ZHANG YI, SHI JUNFENG, CAO GUANGQIANG, WANG YUN, YANG XIAOPENG
• Format: Patent
• Language: Chinese; English
• Published: 18.06.2021
• 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 provides a horizontal well plug removal and yield increase integrated technology and system. The horizontal well plug removal and yield increase integrated technology comprises the steps that one end of an oil pipe is connected with an underground rotational flow impact plug removal well washing tool, and the underground rotational flow impact plug removal well washing tool is put into a horizontal well shaft; a plug removal well washing medium is injected into an oil sleeve annulus, the plug removal well washing medium generates rotating high-speed impact flow in a wellbore annulus after flowing through the rotational flow generating part, and reverse circulation rotational impact plug removal is carried out on the horizontal well shaft and a slotted screen pipe from the position near a horizontal well landing point; the plug removal well washing medium carries impacted pollution plugs to enter the oil pipe from a circulation switching part and is carried to a wellhead from the oil pipe; the pl