Full-horizontal-section groove expanding method for ultra-deep salt mine butt-joint well halogen extraction

• Main Authors: LI PENG, ZHAO KAI, LI YINPING, MA HONGLING, LIU YUANXI, SHI XILIN, YANG JIE, ZHAO AHU
• Format: Patent
• Language: Chinese; English
• Published: 15.01.2021
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MINING; MINING OR QUARRYING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS

The invention discloses a full-horizontal-section groove expanding method for ultra-deep salt mine butt-joint well halogen extraction, and belongs to the technical field of underground reserve of petroleum and natural gas. The full-horizontal-section groove expanding method for ultra-deep salt mine butt-joint well halogen extraction comprises the following steps that a water injection pipe is putdown in a slope making well to drive jet pipes to reach a horizontal cavity, the water injection pipe is put down into the whole horizontal cavity range, and the jet pipes are distributed in the horizontal cavity; and high-pressure clear water is supplied to the jet pipes through the water injection pipe, the jet pipes form a uniform water jet area in the horizontal cavity range, salt rock aroundthe horizontal cavity is evenly scoured, the salt rock around the horizontal cavity is rapidly dissolved, and groove expanding is conducted on the full-horizontal section of the horizontal cavity. According to the full-horizon