Horizontal well jarring jam releasing operation method and combination

• Main Authors: MING XIN, GUO LI, LAN KAI, DU XIAOSONG, YANG DAIMING, ZHANG ZHAOGUO
• Format: Patent
• Language: Chinese; English
• Published: 18.10.2022
• 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 horizontal well jarring jam releasing operation method and combination.The operation method comprises the steps that S1, a jarring jam releasing combination connected to the lower end of a drilling tool is put into a well to be buckled into a fish, and the jarring jam releasing combination comprises a jarring device, an open type lower jar and a safety connector which are sequentially connected from top to bottom; s2, the drilling tool continues to be put down, and the jar and the open type lower jar are pressed down till closing and resetting are achieved; s3, the drilling tool is lifted upwards, so that the stroke of the open-type bumper jar is pulled open, the brake is braked after the drilling tool generates elastic elongation, and the jar jar is waited for energy storage; and S4, before the jar strikes upwards, the brake is released, and the drilling tool is released. According to the scheme, jarring jam releasing is achieved by means of the multistage composite jarring principl